FL926 – Windshield Wipers May Fail – 2020-2022 Western Star 49X

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Internal Defect Information Report (Section 573.6) FL-926 Date of Submission: April 8, 2022 (Amended June 8, 2022) Manufacturer: Daimler Truck North America LLC P.O. BOX 3849 Portland, Oregon 97208 Type of Report: X Safety Defect ⃝ Non-Compliance Vehicle Information Model Yr. Start: 2021 Model Yr. End: 2022 Make: Western Star Model: 47X, 49X Production Dates: Begin: 2/10/2020 End: 7/30/2021 Descriptive Information: All Western Star 47X and 49X built within the production date range. Number potentially involved: 689 Estimated percentage of involve with defect: 100% Basis for Determination of the Recall Population: Vehicles of the newly introduced 47X and 49X configuration. Defect / Noncompliance Description For this Defect/Noncompliance: Describe the defect or noncompliance: On the affected vehicles, the spline teeth in the windshield wiper arm may wear and break potentially resulting in wipers not functioning properly. It is also possible, although significantly less likely, that the wiper’s casting arm may break. Describe the safety risk: In some cases, the wipers may not function properly reducing the driver’s visibility under certain operating conditions, which may increase the risk of a crash. Identify any warning which can precede or occur: If the driver has operated the windshield wipers as part of the recommended pre-trip inspection, the defect would likely be detectable during that inspection. If applicable, identify the manufacture of the defective or noncompliant component.: Trico Products Headquarters 3255 West Hamlin Road Rochester Hills, MI 48309 (248) 371-1700 Internal Involved Components Component Name: Wiper Linkage Component Description: Wiper arm and linkage Component Part Number: A22-78787-000, A22-78787-001, A22-75789-001, A22-75789-000 Chronology of Defect / Noncompliance Determination Provide the chronology of events leading up to the defect decision or test data for the noncompliance decision.: In February 2022, DTNA became aware of some number of wiper arm linkage failures reported from the field on newly introduced vehicles. In that same month, based on the report DTNA promptly opened an investigation. During the investigation, DTNA received notice from TRICO our windshield wiper arm supplier of a tooling issue leading to the defect. Out of an abundance of caution as soon as the scope and magnitude of the defect were determined, in March 2022, DTNA reasonably decided to conduct a voluntary safety recall. DTNA has received 12 warranty claims between 3/16/2021-3/19/2022 and 1 field report on Dec 10, 2021 related to the defect. Following its initial 573 report in March 2022, DTNA continued to investigate this issue. On May 2, 2022, out of an abundance of caution, DTNA added a model of vehicle to the population and expanded the population to ensure that the population includes all vehicles that could have the compromised part; the correct US population is shown above. On May 5, 2022, DTNA amended the chronology with an updated summary of warranty claims and field reports on US vehicles. Identify the Remedy Describe the defect/noncompliance remedy program, including the manufacture’s plan for reimbursement. Windshield wiper arm and linkage parts will be inspected and replaced as needed. Repairs will be performed by Daimler Truck North America authorized service facilities. Daimler Truck North America shall be offering a refund for owner-paid repairs covered by this recall if the repair was performed prior to the date indicated in the reimbursement plan, which will be posted with owner’s notification letter. Owners are directed to seek reimbursement through authorized dealers. Internal Identify the Recall Schedule Describe the recall schedule for notifications.: Customer notification will be made by first class mail using Daimler Truck North America records to determine the customers affected. Planned Dealer Notification Begin Date: 06/06/2022 Planned Dealer Notification End Date: 06/06/2022 Planned Owner Notification Begin Date: 06/06/2022 Planned Owner Notification End Date: 06/06/2022 Does DTNA plan to file inconsequentiality petition? ⃝ Yes X No Manufacture’s identification code for this recall (if applicable): FL-926 DTNA Representative; Tiffani Torgeson Manager, Compliance and Regulatory Affairs

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Internal Defect Information Report (Section 573.6) FL-926 Date of Submission: April 8, 2022 Manufacturer: Daimler Truck North America LLC P.O. BOX 3849 Portland, Oregon 97208 Type of Report: X Safety Defect ⃝ Non-Compliance Vehicle Information Model Yr. Start: 2020 Model Yr. End: 2022 Make: Western Star Model: 49X Production Dates: Begin: 3/19/2019 End: 6/30/2021 Descriptive Information: All Western Star 49X built within the production date range. Number potentially involved: 800 Estimated percentage of involve with defect: 100% Basis for Determination of the Recall Population: Vehicles of the newly introduced 49X configuration. Defect / Noncompliance Description For this Defect/Noncompliance: Describe the defect or noncompliance: On the affected vehicles, the windshield wiper linkage and casting may wear and break potentially resulting in wipers not functioning properly. Describe the safety risk: In some cases, the wipers may not function properly reducing the driver’s visibility under certain operating conditions, which may increase the risk of a crash. Identify any warning which can precede or occur: If the driver has operated the windshield wipers as part of the recommended pre-trip inspection, the defect would likely be detectable during that inspection. If applicable, identify the manufacture of the defective or noncompliant component.: N/A Involved Components Component Name: Wiper Linkage Component Description: Wiper arm and linkage Component Part Number: A22-78787-000, A22-78787-001, A22-75789-001, A22-75789-000 Internal Chronology of Defect / Noncompliance Determination Provide the chronology of events leading up to the defect decision or test data for the noncompliance decision.: In February 2022, DTNA became aware of some number of wiper arm linkage failures reported from the field on newly introduced vehicles. In that same month, based on the report DTNA promptly opened an investigation. During the investigation, DTNA received notice from TRICO our windshield wiper arm supplier of a tooling issue leading to the defect. Out of an abundance of caution as soon as the scope and magnitude of the defect were determined, in March 2022, DTNA reasonably decided to conduct a voluntary safety recall. To date DTNA has received 35 warranty claims and 2 field reports related to the defect. Identify the Remedy Describe the defect/noncompliance remedy program, including the manufacture’s plan for reimbursement. Remedy is still being developed at this time. Repairs will be performed by Daimler Truck North America authorized service facilities. Daimler Truck North America shall be offering a refund for owner-paid repairs covered by this recall if the repair was performed prior to the date indicated in the reimbursement plan, which will be posted with owner’s notification letter. Owners are directed to seek reimbursement through authorized dealers. Identify the Recall Schedule Describe the recall schedule for notifications.: Customer notification will be made by first class mail using Daimler Truck North America records to determine the customers affected. Planned Dealer Notification Begin Date: 06/06/2022 Planned Dealer Notification End Date: 06/06/2022 Planned Owner Notification Begin Date: 06/06/2022 Planned Owner Notification End Date: 06/06/2022 Does DTNA plan to file inconsequentiality petition? ⃝ Yes X No Manufacture’s identification code for this recall (if applicable): FL-926 DTNA Representative; Tiffani Torgeson Manager, Vehicle Safety Compliance and Regulatory Affairs

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Internal Defect Information Report (Section 573.6) FL-926 Date of Submission: April 8, 2022 (Amended April 27, 2022) Manufacturer: Daimler Truck North America LLC P.O. BOX 3849 Portland, Oregon 97208 Type of Report: X Safety Defect ⃝ Non-Compliance Vehicle Information Model Yr. Start: 2021 Model Yr. End: 2022 Make: Western Star Model: 47X, 49X Production Dates: Begin: 2/10/2020 End: 7/30/2021 Descriptive Information: All Western Star 47X and 49X built within the production date range. Number potentially involved: 689 Estimated percentage of involve with defect: 100% Basis for Determination of the Recall Population: Vehicles of the newly introduced 47X and 49X configuration. Defect / Noncompliance Description For this Defect/Noncompliance: Describe the defect or noncompliance: On the affected vehicles, the spline teeth in the windshield wiper arm may wear and break potentially resulting in wipers not functioning properly. It is also possible, although significantly less likely, that the wiper’s casting arm may break. Describe the safety risk: In some cases, the wipers may not function properly reducing the driver’s visibility under certain operating conditions, which may increase the risk of a crash. Identify any warning which can precede or occur: If the driver has operated the windshield wipers as part of the recommended pre-trip inspection, the defect would likely be detectable during that inspection. If applicable, identify the manufacture of the defective or noncompliant component.: Trico Products Headquarters 3255 West Hamlin Road Rochester Hills, MI 48309 Involved Components Internal Component Name: Wiper Linkage Component Description: Wiper arm and linkage Component Part Number: A22-78787-000, A22-78787-001, A22-75789-001, A22-75789-000 Chronology of Defect / Noncompliance Determination Provide the chronology of events leading up to the defect decision or test data for the noncompliance decision.: In February 2022, DTNA became aware of some number of wiper arm linkage failures reported from the field on newly introduced vehicles. In that same month, based on the report DTNA promptly opened an investigation. During the investigation, DTNA received notice from TRICO our windshield wiper arm supplier of a tooling issue leading to the defect. Out of an abundance of caution as soon as the scope and magnitude of the defect were determined, in March 2022, DTNA reasonably decided to conduct a voluntary safety recall. DTNA has received 12 warranty claims between 3/16/2021-3/19/2022 and 1 field report on Dec 10, 2021 related to the defect. Identify the Remedy Describe the defect/noncompliance remedy program, including the manufacture’s plan for reimbursement. Windshield wiper arm and linkage parts will be inspected and replaced as needed. Repairs will be performed by Daimler Truck North America authorized service facilities. Daimler Truck North America shall be offering a refund for owner-paid repairs covered by this recall if the repair was performed prior to the date indicated in the reimbursement plan, which will be posted with owner’s notification letter. Owners are directed to seek reimbursement through authorized dealers. Identify the Recall Schedule Describe the recall schedule for notifications.: Customer notification will be made by first class mail using Daimler Truck North America records to determine the customers affected. Planned Dealer Notification Begin Date: 06/06/2022 Planned Dealer Notification End Date: 06/06/2022 Planned Owner Notification Begin Date: 06/06/2022 Planned Owner Notification End Date: 06/06/2022 Does DTNA plan to file inconsequentiality petition? ⃝ Yes X No Manufacture’s identification code for this recall (if applicable): FL-926 DTNA Representative; Tiffani Torgeson Manager, Compliance and Regulatory Affairs

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Internal Defect Information Report (Section 573.6) FL-926 Date of Submission: April 8, 2022 (Amended May 2, 2022) Manufacturer: Daimler Truck North America LLC P.O. BOX 3849 Portland, Oregon 97208 Type of Report: X Safety Defect ⃝ Non-Compliance Vehicle Information Model Yr. Start: 2021 Model Yr. End: 2022 Make: Western Star Model: 47X, 49X Production Dates: Begin: 2/10/2020 End: 7/30/2021 Descriptive Information: All Western Star 47X and 49X built within the production date range. Number potentially involved: 689 Estimated percentage of involve with defect: 100% Basis for Determination of the Recall Population: Vehicles of the newly introduced 47X and 49X configuration. Defect / Noncompliance Description For this Defect/Noncompliance: Describe the defect or noncompliance: On the affected vehicles, the spline teeth in the windshield wiper arm may wear and break potentially resulting in wipers not functioning properly. It is also possible, although significantly less likely, that the wiper’s casting arm may break. Describe the safety risk: In some cases, the wipers may not function properly reducing the driver’s visibility under certain operating conditions, which may increase the risk of a crash. Identify any warning which can precede or occur: If the driver has operated the windshield wipers as part of the recommended pre-trip inspection, the defect would likely be detectable during that inspection. If applicable, identify the manufacture of the defective or noncompliant component.: Trico Products Headquarters 3255 West Hamlin Road Rochester Hills, MI 48309 Involved Components Internal Component Name: Wiper Linkage Component Description: Wiper arm and linkage Component Part Number: A22-78787-000, A22-78787-001, A22-75789-001, A22-75789-000 Chronology of Defect / Noncompliance Determination Provide the chronology of events leading up to the defect decision or test data for the noncompliance decision.: In February 2022, DTNA became aware of some number of wiper arm linkage failures reported from the field on newly introduced vehicles. In that same month, based on the report DTNA promptly opened an investigation. During the investigation, DTNA received notice from TRICO our windshield wiper arm supplier of a tooling issue leading to the defect. Out of an abundance of caution as soon as the scope and magnitude of the defect were determined, in March 2022, DTNA reasonably decided to conduct a voluntary safety recall. DTNA has received 12 warranty claims between 3/16/2021-3/19/2022 and 1 field report on Dec 10, 2021 related to the defect. Following its initial 573 report in March 2022, DTNA continued to investigate this issue. On May 2, 2022, out of an abundance of caution, DTNA added a model of vehicle to the population and expanded the population to ensure that the population includes all vehicles that could have the compromised part; the correct US population is shown above. Identify the Remedy Describe the defect/noncompliance remedy program, including the manufacture’s plan for reimbursement. Windshield wiper arm and linkage parts will be inspected and replaced as needed. Repairs will be performed by Daimler Truck North America authorized service facilities. Daimler Truck North America shall be offering a refund for owner-paid repairs covered by this recall if the repair was performed prior to the date indicated in the reimbursement plan, which will be posted with owner’s notification letter. Owners are directed to seek reimbursement through authorized dealers. Internal Identify the Recall Schedule Describe the recall schedule for notifications.: Customer notification will be made by first class mail using Daimler Truck North America records to determine the customers affected. Planned Dealer Notification Begin Date: 06/06/2022 Planned Dealer Notification End Date: 06/06/2022 Planned Owner Notification Begin Date: 06/06/2022 Planned Owner Notification End Date: 06/06/2022 Does DTNA plan to file inconsequentiality petition? ⃝ Yes X No Manufacture’s identification code for this recall (if applicable): FL-926 DTNA Representative; Tiffani Torgeson Manager, Compliance and Regulatory Affairs

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Internal Daimler Truck North America LLC June 2022 IMPORTANT SAFETY RECALL See enclosed VIN list FL926 Interim Recall Notice NHTSA #22V-230 Subject: Western Star 49X Wiper Arm Failure This notice is sent to you in accordance with the requirements of the National Traffic and Motor Vehicle Safety Act. Daimler Truck North America LLC (DTNA), on behalf of its Freightliner Trucks Division, and wholly owned subsidiary Western Star Truck Sales, Inc., has decided that a defect which relates to motor vehicle safety exists in specific model years 2020-2022 Western Star 49X vehicles manufactured March 19, 2019, through June 30, 2021. On the affected vehicles, the spline teeth in the windshield wiper arm may wear and break. Wipers that do not function properly can reduce the driver’s visibility under certain operating conditions. This may increase the risk of a crash. This is the first of two notices you will receive regarding this subject. This letter is to inform you of an upcoming Recall to correct the issue noted above. Daimler Trucks is currently securing replacement parts. There is no action for you to take at this time. The second notice will inform you when the final remedy is available. When you receive the second notice, please contact your authorized Daimler Trucks North America dealer to schedule the Recall for your vehicle. If you do not own the vehicle that corresponds to the identification number(s) which appears on the Recall Notification, please return the notification to the Warranty Campaigns Department with any information you can furnish that will assist us in locating the present owner. If you have leased this vehicle, Federal law requires that you forward this notice to the lessee within 10 days. If you are a subsequent stage manufacturer, Federal law requires that you forward this notice to your distributors and retail outlets within five working days. If you have questions about this Recall, please contact the Warranty Campaigns Department at (800) 547-0712, 7:00 a.m. to 4:00 p.m. Pacific Time, Monday through Friday, e-mail address [email protected]. For other concerns, you may contact the Customer Assistance Center at (800) 385-4357. If you are not able to have the defect remedied without charge and within a reasonable time, you may wish to submit a complaint to the Administrator, National Highway Traffic Safety Administration, 1200 New Jersey Avenue SE, Washington, DC 20590; or call the Vehicle Safety Hotline at (888) 327-4236 (TTY: 800-424-9153); or go to http://www.safercar.gov. We regret any inconvenience this action may cause but feel certain you understand our interest in motor vehicle safety. WARRANTY CAMPAIGNS DEPARTMENT Enclosure Daimler Truck North America LLC Warranty Campaigns Department P.O. Box 4090 Portland, OR 97208-4090 800.547.0712 Phone

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Daimler Truck North America LLC June 2022 IMPORTANT SAFETY RECALL See enclosed VIN list FL926 NHTSA #22V-230 Subject: Western Star Wiper Arms This notice is sent to you in accordance with the requirements of the National Traffic and Motor Vehicle Safety Act. Daimler Truck North America LLC (DTNA), on behalf of its wholly owned subsidiary Western Star Truck Sales, Inc., has decided that a defect which relates to motor vehicle safety exists in specific model years 2021-2022 Western Star 47X, and 49X vehicles manufactured February 10, 2020, through July 28, 2021. On the affected vehicles, the spline teeth in the windshield wiper arm may wear and break. Wipers that do not function properly can reduce the driver’s visibility under certain operating conditions. This may increase the risk of a crash. Windshield wiper arms will be inspected and replaced as needed, free of charge. Repairs will be performed by Daimler Truck North America authorized service facilities. Please contact an authorized Daimler Truck North America dealer to arrange to have the Recall performed and to ensure that parts are available at the dealership. To locate an authorized dealer, search online at Daimler-TrucksNorthAmerica.com/Contact-us. Scroll down to “Locate a Dealer” and select the appropriate brand. The Recall will take approximately half hour and will be performed at no charge to you. You may also confirm your vehicle’s involvement in this recall at this URL: https://dtna-dlrinfo.prd.freightliner.com:48518/VinLookup/vin-module/getVinLookupPage. You may be liable for any progressive damage that results from your failure to complete the Recall within a reasonable time after receiving notification. If you do not own the vehicle that corresponds to the identification number(s) which appears on the Recall Notification, please return the notification to the Warranty Campaigns Department with any information you can furnish that will assist us in locating the present owner. If you have leased this vehicle, Federal law requires that you forward this notice to the lessee within 10 days. If you are a subsequent stage manufacturer, Federal law requires that you forward this notice to your distributors and retail outlets within five working days. If you have paid to have this recall condition corrected prior to this notice, you may be eligible to receive reimbursement. Please see the reverse side of this notice for details. If you have questions about this Recall, please contact the Warranty Campaigns Department at (800) 547-0712, 7:00 a.m. to 4:00 p.m. Pacific Time, Monday through Friday, e-mail address [email protected]. For other concerns, you may contact the Customer Assistance Center at (800) 385-4357. If you are not able to have the defect remedied without charge and within a reasonable time, you may wish to submit a complaint to the Administrator, National Highway Traffic Safety Administration, 1200 New Jersey Avenue SE, Washington, DC 20590; or call the Vehicle Safety Hotline at (888) 327-4236 (TTY: 800-424-9153); or go to http://www.safercar.gov. We regret any inconvenience this action may cause but feel certain you understand our interest in motor vehicle safety. WARRANTY CAMPAIGNS DEPARTMENT Enclosure Daimler Truck North America LLC Warranty Campaigns Department P.O. Box 4090 Portland, OR 97208-4090 800.547.0712 Phone Daimler Truck North America LLC Reimbursement to Customers for Repairs Performed Prior to Recall If you have already paid to have this recall condition corrected you may be eligible to receive reimbursement. Requests for reimbursement may include parts and labor. Reimbursement may be limited to the amount the repair would have cost if completed by an authorized Daimler Truck North America LLC dealer. The following documentation must be presented to your dealer for consideration for reimbursement. Please provide original or clear copies of all receipts, invoices, and repair orders that show: • The name and address of the person who paid for the repair. • The Vehicle Identification Number (VIN) of the vehicle that was repaired. • What problem occurred, what repair was done, when the repair was done. • Who repaired the vehicle. • The total cost of the repair expense that is being claimed. • Proof of payment for the repair (such as the front and back of a cancelled check or a credit card receipt). Reimbursement will be made by check from your Daimler Truck North America LLC dealer. Please speak with your Daimler Truck North America LLC authorized dealer concerning this matter Daimler Truck North America LLC Warranty Campaigns Department P.O. Box 4090 Portland, OR 97208-4090 800.547.0712 Phone

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Subject: Western Star Wiper Arms Models Affected: Specific model years 2021-2022 Western Star 47X, and 49X vehicles manufactured February 10, 2020, through July 28, 2021. General Information Daimler Truck North America LLC (DTNA), on behalf of its wholly owned subsidiary Western Star Truck Sales, Inc., has decided that a defect which relates to motor vehicle safety exists on the vehicles mentioned above. On the affected vehicles, the spline teeth in the windshield wiper arm may wear and break. Wipers that do not function properly reduce the driver’s visibility under certain operating conditions. This may increase the risk of a crash. Windshield wiper arms will be inspected and replaced as needed, free of charge. Repairs will be performed by Daimler Truck North America authorized service facilities. There are approximately 1,054 vehicles involved in this campaign. Additional Repairs Dealers must complete all outstanding Recall and Field Service campaigns prior to the sale or delivery of a vehicle. A Dealer will be liable for any progressive damage that results from its failure to complete campaigns before sale or delivery of a vehicle. Owners may be liable for any progressive damage that results from failure to complete campaigns within a reasonable time after receiving notification. Work Instructions Please refer to the attached work instructions. Prior to performing the campaign, check the vehicle for a completion sticker (Form WAR260). Replacement Parts Replacement parts are expected to be in stock 06/20/22 and can be obtained by ordering the part number(s) listed below from your facing Parts Distribution Center. If our records show your dealership has ordered any vehicle(s) involved in campaign number FL926, a list of the customers and vehicle identification numbers will be available on DTNAConnect. Please refer to this list when ordering parts for this recall. NOTE: The wiper arms may or may not need replacement depending on the vehicle inspection. Table 1 – Replacement Parts for FL926 Campaign Number Part Description Part Number Qty. FL926A ARM-WINDSHIELD WIPER,LH A22-78787-000 1 ea FL926A ARM-WINDSHIELD WIPER,RH A22-78787-001 1 ea FL926A BLANK C OMPLETION S TICKER WAR260 1 ea Table 1 Removed Parts U.S. and Canadian Dealers, please follow Warranty Failed Parts Tracking shipping instructions for the disposition of all removed parts. Export distributors, please destroy removed parts unless otherwise advised. Daimler Truck North America LLC Recall Campaign June 2022 FL926A NHTSA #22V-230 Transport Canada #2022-172 Page 1 Labor Allowance Table 2 – Labor Allowance Campaign Number Procedure Time Allowed (hours) SRT Code Corrective Action FL926A Inspect, and/or remove and replace wiper arm 0.2 996-R145A 12-Repair Recall/Campaign Table 2 IMPORTANT: When the Recall has been completed, locate the base completion label in the appropriate location on the vehicle, and attach the red completion sticker provided in the recall kit (Form WAR260). If the vehicle does not have a base completion label, clean a spot on the appropriate location of the vehicle and first attach the base completion label (Form WAR259). If a recall kit is not required or there is no completion sticker in the kit, write the recall number on a blank sticker and attach it to the base completion label. Claims for Credit You will be reimbursed for your parts, labor, and handling (landed cost for Export Distributors) by submitting your claim through the Warranty system within 30 days of completing this campaign. Please reference the following information in OWL: • Claim type is Recall Campaign. • In the Campaign field, enter the campaign number and appropriate condition code (FL926-A). • In the Primary Failed Part Number field, enter 25-FL926-000. • In the Parts field, enter the appropriate kit or part number(s) as shown in the Replacement Parts Table. • In the Labor field, first enter the appropriate SRT from the Labor Allowance Table. Administrative time will be included automatically as SRT 939-6010A for 0.3 hours. • The VMRS Component Code is F99-999-005 and the Cause Code is A1 – Campaign. • U.S. and Canada — Reimbursement for Prior Repairs. When a customer asks about reimbursement, please do the following: • Accept the documentation of the previous repair. • Make a brief check of the customer’s paperwork to see if the repair may be eligible for reimbursement. (See the “Copy of Owner Letter” section of this bulletin for reimbursement guidelines.) • Submit an OWL Recall Pre-Approval Request for a decision. • Include the approved amount on your claim in the Other Charges section. • Attach the documentation to the pre-approval request. • If approved, submit a based on claim for the pre-approval. • Reimburse the customer the appropriate amount. IMPORTANT: OWL must be viewed prior to performing the recall to ensure the vehicle is involved and the campaign has not been previously completed. Also, check for a completion sticker prior to beginning work. U.S. and Canadian dealers, contact the Warranty Campaigns Department via Web inquiry at DTNAConnect.com/WSC, if you have any questions or need additional information. Export distributors, submit a Web inquiry or contact your International Service Manager. U.S. and Canadian Dealers: To return excess kit inventory related to this campaign, U.S. dealers must submit a Parts Authorization Return (PAR) to the Memphis PDC. Canadian dealers must submit a PAR to their facing PDC. All kits must be in resalable condition. PAR requests must include the original purchase invoice number. Export Distributors: Excess inventory is not returnable. Daimler Truck North America LLC Recall Campaign June 2022 FL926A NHTSA #22V-230 Transport Canada #2022-172 Page 2 The letter notifying U.S. and Canadian vehicle owners is included for your reference. Please note that the National Traffic and Motor Vehicle Safety Act, as amended (Title 49, United States Code, Chapter 301), requires the owner’s vehicle(s) be corrected within a reasonable time after parts are available to you. The Act states that failure to repair a vehicle within 60 days after tender for repair shall be prima facie evidence of an unreasonable time. However, circumstances of a particular situation may reduce the 60 day period. Failure to repair a vehicle within a reasonable time can result in either the obligation to (a) replace the vehicle with an identical or reasonably equivalent vehicle, without charge, or (b) refund the purchase price in full, less a reasonable allowance for depreciation. The Act further prohibits dealers from selling a vehicle unless all outstanding recalls are performed. Any lessor is required to send a copy of the recall notification to the lessee within 10 days. Any subsequent stage manufacturer is required to forward this notice to its distributors and retail outlets within five working days. Daimler Truck North America LLC Recall Campaign June 2022 FL926A NHTSA #22V-230 Transport Canada #2022-172 Page 3 Copy of Notice to Owners Subject: Western Star Wiper Arms For the Notice to U.S. Customers: This notice is sent to you in accordance with the National Traffic and Motor Vehicle Safety Act. For the Notice to Canadian Customers: This notice is sent to you in accordance with the requirements of the Motor Vehicle Safety Act. This is to inform you that your vehicle may contain a defect that could affect the safety of a person. Daimler Truck North America LLC (DTNA), on behalf of its owned subsidiary Western Star Truck Sales, Inc., has decided that a defect which relates to motor vehicle safety exists in specific model years 2021-2022 Western Star 47X, and 49X vehicles manufactured February 10, 2020, through July 28, 2021. On the affected vehicles, the spline teeth in the windshield wiper arm may wear and break. Wipers that do not function properly reduce the driver’s visibility under certain operating conditions. This may increase the risk of a crash. Windshield wiper arms will be inspected and replaced as needed, free of charge. Repairs will be performed by Daimler Truck North America authorized service facilities. Please contact an authorized Daimler Truck North America dealer to arrange to have the Recall performed and to ensure that parts are available at the dealership. The Recall will take approximately a half hour and will be performed at no charge to you. To locate an authorized dealer, search online at https:// northamerica.daimlertruck.com/contact-us/. Scroll down to “Locate a Dealer,” and select the appropriate brand. You may also confirm your vehicle’s involvement in this recall at this URL: https:// dtna-dlrinfo.prd.freightliner.com:48518/VinLookup/vin-module/getVinLookupPage. You may be liable for any progressive damage that results from your failure to complete the Recall within a reasonable time after receiving notification. If you do not own the vehicle that corresponds to the identification number(s) which appears on the Recall Notification, please return the notification to the Warranty Campaigns Department in the postage-paid envelope with any information you can furnish that will assist us in locating the present owner. If you have leased this vehicle, Federal law requires that you forward this notice to the lessee within 10 days. If you are a subsequent stage manufacturer, Federal law requires that you forward this notice to your distributors and retail outlets within five working days. If you have paid to have this recall condition corrected prior to this notice, you may be eligible to receive reimbursement. Please see the reverse side of this notice for details. If you have questions about this Recall, please contact the Warranty Campaigns Department at (800) 547-0712, 7:00 a.m. to 4:00 p.m. Pacific Time, Monday through Friday, e-mail address [email protected]. For the Notice to U.S. Customers: If you are not able to have the defect remedied without charge and within a reasonable time, you may wish to submit a complaint to the Administrator, National Highway Traffic Safety Administration, 1200 New Jersey Avenue, SE., Washington, DC 20590; or call the Vehicle Safety Hotline at (888) 327-4236 (TTY: 800-424-9153); or to http://www.nhtsa.gov. For the Notice to Canadian Customers: If you wish to submit a complaint about this recall, you can contact Transport Canada road safety, 80 rue Noel, Gatineau, Quebec J8Z 0A1 or call (800) 333-0510. We regret any inconvenience this action may cause but feel certain you understand our interest in motor vehicle safety. WARRANTY CAMPAIGNS DEPARTMENT Enclosure Daimler Truck North America LLC Recall Campaign June 2022 FL926A NHTSA #22V-230 Transport Canada #2022-230 Page 4 Reimbursement to Customers for Repairs Performed Prior to Recall If you have already paid to have this recall condition corrected you may be eligible to receive reimbursement. Requests for reimbursement may include parts and labor. Reimbursement may be limited to the amount the repair would have cost if completed by an authorized Daimler Truck North America LLC dealer. The following documentation must be presented to your dealer for consideration for reimbursement. Please provide original or clear copies of all receipts, invoices, and repair orders that show: • The name and address of the person who paid for the repair • The Vehicle Identification Number (VIN) of the vehicle that was repaired • What problem occurred, what repair was done, when the repair was done • Who repaired the vehicle • The total cost of the repair expense that is being claimed • Proof of payment for the repair (such as the front and back of a cancelled check or a credit card receipt) Reimbursement will be made by check from your Daimler Truck North America LLC dealer. Please speak with your Daimler Truck North America LLC authorized dealer concerning this matter. Daimler Truck North America LLC Recall Campaign June 2022 FL926A NHTSA #22V-230 Transport Canada #2022-230 Page 5 Work Instructions Subject: Western Star Wiper Arms Models Affected: Specific model years 2021-2022 Western Star 47X, and 49X vehicles manufactured February 10, 2020, through July 28, 2021. Wiper Arm Replacement 1. Check the base label (Form WAR259) for a completion sticker for FL926 (Form WAR260) indicating this work has been done. The base label is usually located on the passenger door about 12 inches (30 cm) below the door latch. If a sticker is present, no work is needed. If there is no sticker, proceed with the next step. 2. Park the vehicle on a level surface, shut down the engine, and apply the parking brake. Chock the tires. NOTE: There are index marks on the windshield to show the location when the wiper blades are correctly parked. 3. Check that the wiper blades are parked. If necessary, park them by turning the wiper switch ON, and then OFF with the ignition key in the ON position. 4. Open the hood. WARNING Disconnect the wiper motor electrical connector before working on the wiper linkage. This will prevent the windshield wiper motor from cycling. The motor could cycle if the wiper linkage driveshaft is forced out of the parked position, which could result in personal injury. 5. Disconnect the wiper motor electrical connector. For instructions, see Group 82 of the 47X & 49X Workshop Manual. 6. If needed, disconnect the washer hoses from the wiper arms. Daimler Truck North America LLC Recall Campaign June 2022 FL926A NHTSA #22V-230 Transport Canada #2022-172 Page 6 8. Clean the grease on the splined area. 9. Inspect the date stamping on the wiper arm. See Fig. 2. 05/06/2020 f820483 A 1 2 A. Locking clip movement. 1. Wiper Arm 2. Locking Clip Fig. 1, Wiper Arm Removal 05/17/2022 f820491 Fig. 2, Date Stamping on the Wiper Arm Daimler Truck North America LLC Recall Campaign June 2022 FL926A NHTSA #22V-230 Transport Canada #2022-172 Page 7 7. Using a small screw driver, lift the wiper arm off the glass and pull the locking clip out. See Fig. 1. Then lower the arm and pull it off the splined shaft. 11. Replace the wiper arm with the new wiper arm that has date stamping #21 or newer. NOTE: Both wiper arms—having old and new date stamping—bear the same part number. 12. Remove the rubber washer hose from the plastic connection at the rain tray. Observe the rubber washer hose routing before removing. 13. Depress the retaining clip on the wiper blade assembly and slip the blade assembly out of the hook on the wiper arm. 14. Slide the wiper blade assembly into the hook on the new wiper arm until it locks in place. 15. Install the rubber washer hose on the plastic connection at the rain tray. 16. With the wiper arm locked in the up position, install the arm on the wiper transmission shaft spline. The wiper arm is keyed to the shaft in one location only. 17. Install the wiper arms in the parked position so they are aligned with the index marks on the windshield. 18. Verify that the wiper blades are in the correct location, then lift the wiper arm off the glass and slide the locking clip in. See Fig. 1. Lower the arm. 19. If disconnected, connect the washer hoses at the wiper arms. 20. Verify the wiper and the sprayer function correctly. 21. Close the hood. 22. Clean a spot on the base label (Form WAR259) and attach a campaign completion sticker for FL926 (Form WAR260), indicating this work has been completed. Daimler Truck North America LLC Recall Campaign June 2022 FL926A NHTSA #22V-230 Transport Canada #2022-172 Page 8 10. Check the date stamping on the wiper arm. Is the date stamping #21, or newer? YES → Install the existing wiper arms in the parked position so they are aligned with the index marks on the windshield. Then go to step 18. NO → Go to the next step.

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-230 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Daimler Trucks North America, LLC Submission Date : APR 27, 2022 NHTSA Recall No. : 22V-230 Manufacturer Recall No. : FL-926 Manufacturer Information : Manufacturer Name : Daimler Trucks North America, LLC Address : 4747 N. Channel Avenue Portland OR 97217-3849 Company phone : 800-745-8000 Population : Number of potentially involved : 689 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2021-2022 Western Star 49X Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : Power Train : NR Descriptive Information : All Western Star 49X built within the production date range. Production Dates : MAR 19, 2019 – JUN 30, 2021 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 2 : 2021-2021 Western Star 47X Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : Power Train : NR Descriptive Information : All Western Star 47X built within the production date range. Production Dates : MAY 19, 2021 – MAY 27, 2021 VIN Range 1 : Begin : NR End : NR Not sequential Description of Defect : Description of the Defect : On the affected vehicles, the spline teeth in the windshield wiper arm may wear and break potentially resulting in wipers not functioning properly. It is also possible, although significantly less likely, that the wiper’s casting arm may break. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : In some cases, the wipers may not function properly reducing the driver’s visibility under certain operating conditions, which may increase the risk of a crash. Part 573 Safety Recall Report 22V-230 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Description of the Cause : NR Identification of Any Warning that can Occur : If the driver has operated the windshield wipers as part of the recommended pre-trip inspection, the defect would likely be detectable during that inspection. Involved Components : Component Name 1 : Wiper Linkage Component Description : Wiper arm and linkage Component Part Number : A22-78787-000, A22-78787-001, A22-75789-001, A22-75789-000 Supplier Identification : Component Manufacturer Name : Trico Products Headquarters Address : 3255 West Hamlin Road Rochester Hills Michigan 48309 Country : United States Chronology : In February 2022, DTNA became aware of some number of wiper arm linkage failures reported from the field on newly introduced vehicles. In that same month, based on the report DTNA promptly opened an investigation. During the investigation, DTNA received notice from TRICO our windshield wiper arm supplier of a tooling issue leading to the defect. Out of an abundance of caution as soon as the scope and magnitude of the defect were determined, in March 2022, DTNA reasonably decided to conduct a voluntary safety recall. DTNA has received 12 warranty claims between 3/16/2021-3/19/2022 and 1 field report on Dec 10, 2021 related to the defect. Part 573 Safety Recall Report 22V-230 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Remedy : Description of Remedy Program : Windshield wiper arm and linkage parts will be inspected and replaced as needed. Repairs will be performed by Daimler Truck North America authorized service facilities. Daimler Truck North America shall be offering a refund for owner-paid repairs covered by this recall if the repair was performed prior to the date indicated in the reimbursement plan, which will be posted with owner’s notification letter. Owners are directed to seek reimbursement through authorized dealers. How Remedy Component Differs from Recalled Component : NR Identify How/When Recall Condition was Corrected in Production : NR Recall Schedule : Description of Recall Schedule : Customer notification will be made by first class mail using Daimler Truck North America records to determine the customers affected. Planned Dealer Notification Date : JUN 06, 2022 – JUN 06, 2022 Planned Owner Notification Date : JUN 06, 2022 – JUN 06, 2022 * NR – Not Reported

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-230 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Daimler Trucks North America, LLC Submission Date : MAY 02, 2022 NHTSA Recall No. : 22V-230 Manufacturer Recall No. : FL-926 Manufacturer Information : Manufacturer Name : Daimler Trucks North America, LLC Address : 4747 N. Channel Avenue Portland OR 97217-3849 Company phone : 800-745-8000 Population : Number of potentially involved : 689 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2021-2022 Western Star 49X Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : Power Train : NR Descriptive Information : All Western Star 49X built within the production date range. Production Dates : MAR 19, 2019 – JUN 30, 2021 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 2 : 2021-2021 Western Star 47X Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : Power Train : NR Descriptive Information : All Western Star 47X built within the production date range. Production Dates : MAY 19, 2021 – MAY 27, 2021 VIN Range 1 : Begin : NR End : NR Not sequential Description of Defect : Description of the Defect : On the affected vehicles, the spline teeth in the windshield wiper arm may wear and break potentially resulting in wipers not functioning properly. It is also possible, although significantly less likely, that the wiper’s casting arm may break. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : In some cases, the wipers may not function properly reducing the driver’s visibility under certain operating conditions, which may increase the risk of a crash. Part 573 Safety Recall Report 22V-230 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Description of the Cause : NR Identification of Any Warning that can Occur : If the driver has operated the windshield wipers as part of the recommended pre-trip inspection, the defect would likely be detectable during that inspection. Involved Components : Component Name 1 : Wiper Linkage Component Description : Wiper arm and linkage Component Part Number : A22-78787-000, A22-78787-001, A22-75789-001, A22-75789-000 Supplier Identification : Component Manufacturer Name : Trico Products Headquarters Address : 3255 West Hamlin Road Rochester Hills Michigan 48309 Country : United States Chronology : In February 2022, DTNA became aware of some number of wiper arm linkage failures reported from the field on newly introduced vehicles. In that same month, based on the report DTNA promptly opened an investigation. During the investigation, DTNA received notice from TRICO our windshield wiper arm supplier of a tooling issue leading to the defect. Out of an abundance of caution as soon as the scope and magnitude of the defect were determined, in March 2022, DTNA reasonably decided to conduct a voluntary safety recall. DTNA has received 12 warranty claims between 3/16/2021-3/19/2022 and 1 field report on Dec 10, 2021 related to the defect. Following its initial 573 report in March 2022, DTNA continued to investigate this issue. On May 2, 2022, out of an abundance of caution, DTNA added a model of vehicle to the population and expanded the population to ensure that the population includes all vehicles that could have the compromised part; the correct US population is shown above. Part 573 Safety Recall Report 22V-230 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Remedy : Description of Remedy Program : Windshield wiper arm and linkage parts will be inspected and replaced as needed. Repairs will be performed by Daimler Truck North America authorized service facilities. Daimler Truck North America shall be offering a refund for owner-paid repairs covered by this recall if the repair was performed prior to the date indicated in the reimbursement plan, which will be posted with owner’s notification letter. Owners are directed to seek reimbursement through authorized dealers. How Remedy Component Differs from Recalled Component : NR Identify How/When Recall Condition was Corrected in Production : NR Recall Schedule : Description of Recall Schedule : Customer notification will be made by first class mail using Daimler Truck North America records to determine the customers affected. Planned Dealer Notification Date : JUN 06, 2022 – JUN 06, 2022 Planned Owner Notification Date : JUN 06, 2022 – JUN 06, 2022 * NR – Not Reported

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-230 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Daimler Trucks North America, LLC Submission Date : MAY 05, 2022 NHTSA Recall No. : 22V-230 Manufacturer Recall No. : FL-926 Manufacturer Information : Manufacturer Name : Daimler Trucks North America, LLC Address : 4747 N. Channel Avenue Portland OR 97217-3849 Company phone : 800-745-8000 Population : Number of potentially involved : 689 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2021-2021 Western Star 47X Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : Power Train : NR Descriptive Information : All Western Star 47X built within the production date range. Production Dates : MAY 19, 2021 – MAY 27, 2021 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 2 : 2021-2022 Western Star 49X Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : Power Train : NR Descriptive Information : All Western Star 49X built within the production date range. Production Dates : MAR 19, 2019 – JUN 30, 2021 VIN Range 1 : Begin : NR End : NR Not sequential Description of Defect : Description of the Defect : On the affected vehicles, the spline teeth in the windshield wiper arm may wear and break potentially resulting in wipers not functioning properly. It is also possible, although significantly less likely, that the wiper’s casting arm may break. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : In some cases, the wipers may not function properly reducing the driver’s visibility under certain operating conditions, which may increase the risk of a crash. Part 573 Safety Recall Report 22V-230 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Description of the Cause : NR Identification of Any Warning that can Occur : If the driver has operated the windshield wipers as part of the recommended pre-trip inspection, the defect would likely be detectable during that inspection. Involved Components : Component Name 1 : Wiper Linkage Component Description : Wiper arm and linkage Component Part Number : A22-78787-000, A22-78787-001, A22-75789-001, A22-75789-000 Supplier Identification : Component Manufacturer Name : Trico Products Headquarters Address : 3255 West Hamlin Road Rochester Hills Michigan 48309 Country : United States Chronology : In February 2022, DTNA became aware of some number of wiper arm linkage failures reported from the field on newly introduced vehicles. In that same month, based on the report DTNA promptly opened an investigation. During the investigation, DTNA received notice from TRICO our windshield wiper arm supplier of a tooling issue leading to the defect. Out of an abundance of caution as soon as the scope and magnitude of the defect were determined, in March 2022, DTNA reasonably decided to conduct a voluntary safety recall. DTNA has received 12 warranty claims between 3/16/2021-3/19/2022 and 1 field report on Dec 10, 2021 related to the defect. Following its initial 573 report in March 2022, DTNA continued to investigate this issue. On May 2, 2022, out of an abundance of caution, DTNA added a model of vehicle to the population and expanded the population to ensure that the population includes all vehicles that could have the compromised part; the correct US population is shown above. On May 5, 2022, DTNA amended the chronology with an updated summary of warranty claims and field reports on US vehicles. Part 573 Safety Recall Report 22V-230 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Remedy : Description of Remedy Program : Windshield wiper arm and linkage parts will be inspected and replaced as needed. Repairs will be performed by Daimler Truck North America authorized service facilities. Daimler Truck North America shall be offering a refund for owner-paid repairs covered by this recall if the repair was performed prior to the date indicated in the reimbursement plan, which will be posted with owner’s notification letter. Owners are directed to seek reimbursement through authorized dealers. How Remedy Component Differs from Recalled Component : NR Identify How/When Recall Condition was Corrected in Production : NR Recall Schedule : Description of Recall Schedule : Customer notification will be made by first class mail using Daimler Truck North America records to determine the customers affected. Planned Dealer Notification Date : JUN 06, 2022 – JUN 06, 2022 Planned Owner Notification Date : JUN 06, 2022 – JUN 06, 2022 * NR – Not Reported

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-230 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Daimler Trucks North America, LLC Submission Date : APR 08, 2022 NHTSA Recall No. : 22V-230 Manufacturer Recall No. : FL-926 Manufacturer Information : Manufacturer Name : Daimler Trucks North America, LLC Address : 4747 N. Channel Avenue Portland OR 97217-3849 Company phone : 800-745-8000 Population : Number of potentially involved : 520 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2020-2022 Western Star 49X Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : Power Train : NR Descriptive Information : All Western Star 49X built within the production date range. Production Dates : MAR 19, 2019 – JUN 30, 2021 VIN Range 1 : Begin : NR End : NR Not sequential Description of Defect : Description of the Defect : On the affected vehicles, the windshield wiper linkage and casting may wear and break potentially resulting in wipers not functioning properly. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : In some cases, the wipers may not function properly reducing the driver’s visibility under certain operating conditions, which may increase the risk of a crash. Description of the Cause : NR Identification of Any Warning that can Occur : If the driver has operated the windshield wipers as part of the recommended pre-trip inspection, the defect would likely be detectable during that inspection. Involved Components : Part 573 Safety Recall Report 22V-230 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Component Name 1 : Wiper Linkage Component Description : Wiper arm and linkage Component Part Number : A22-78787-000, A22-78787-001, A22-75789-001, A22-75789-000 Supplier Identification : Component Manufacturer Name : NR Address : NR NR Country : NR Chronology : In February 2022, DTNA became aware of some number of wiper arm linkage failures reported from the field on newly introduced vehicles. In that same month, based on the report DTNA promptly opened an investigation. During the investigation, DTNA received notice from TRICO our windshield wiper arm supplier of a tooling issue leading to the defect. Out of an abundance of caution as soon as the scope and magnitude of the defect were determined, in March 2022, DTNA reasonably decided to conduct a voluntary safety recall. To date DTNA has received 35 warranty claims and 2 field reports related to the defect. Description of Remedy : Description of Remedy Program : Remedy is still being developed at this time. Repairs will be performed by Daimler Truck North America authorized service facilities. Daimler Truck North America shall be offering a refund for owner-paid repairs covered by this recall if the repair was performed prior to the date indicated in the reimbursement plan, which will be posted with owner’s notification letter. Owners are directed to seek reimbursement through authorized dealers. How Remedy Component Differs from Recalled Component : NR Identify How/When Recall Condition was Corrected in Production : NR Recall Schedule : Description of Recall Schedule : Customer notification will be made by first class mail using Daimler Truck North America records to determine the customers affected. Part 573 Safety Recall Report 22V-230 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Planned Dealer Notification Date : JUN 06, 2022 – JUN 06, 2022 Planned Owner Notification Date : JUN 06, 2022 – JUN 06, 2022 * NR – Not Reported

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-230 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Daimler Trucks North America, LLC Submission Date : JUN 08, 2022 NHTSA Recall No. : 22V-230 Manufacturer Recall No. : FL-926 Manufacturer Information : Manufacturer Name : Daimler Trucks North America, LLC Address : 4747 N. Channel Avenue Portland OR 97217-3849 Company phone : 800-745-8000 Population : Number of potentially involved : 689 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2021-2022 Western Star 49X Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : Power Train : NR Descriptive Information : All Western Star 49X built within the production date range. Production Dates : MAR 19, 2019 – JUN 30, 2021 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 2 : 2021-2021 Western Star 47X Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : Power Train : NR Descriptive Information : All Western Star 47X built within the production date range. Production Dates : MAY 19, 2021 – MAY 27, 2021 VIN Range 1 : Begin : NR End : NR Not sequential Description of Defect : Description of the Defect : On the affected vehicles, the spline teeth in the windshield wiper arm may wear and break potentially resulting in wipers not functioning properly. It is also possible, although significantly less likely, that the wiper’s casting arm may break. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : In some cases, the wipers may not function properly reducing the driver’s visibility under certain operating conditions, which may increase the risk of a crash. Part 573 Safety Recall Report 22V-230 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Description of the Cause : NR Identification of Any Warning that can Occur : If the driver has operated the windshield wipers as part of the recommended pre-trip inspection, the defect would likely be detectable during that inspection. Involved Components : Component Name 1 : Wiper Linkage Component Description : Wiper arm and linkage Component Part Number : A22-78787-000, A22-78787-001, A22-75789-001, A22-75789-000 Supplier Identification : Component Manufacturer Name : Trico Products Headquarters Address : 3255 West Hamlin Road Rochester Hills Michigan 48309 Country : United States Chronology : In February 2022, DTNA became aware of some number of wiper arm linkage failures reported from the field on newly introduced vehicles. In that same month, based on the report DTNA promptly opened an investigation. During the investigation, DTNA received notice from TRICO our windshield wiper arm supplier of a tooling issue leading to the defect. Out of an abundance of caution as soon as the scope and magnitude of the defect were determined, in March 2022, DTNA reasonably decided to conduct a voluntary safety recall. DTNA has received 12 warranty claims between 3/16/2021-3/19/2022 and 1 field report on Dec 10, 2021 related to the defect. Following its initial 573 report in March 2022, DTNA continued to investigate this issue. On May 2, 2022, out of an abundance of caution, DTNA added a model of vehicle to the population and expanded the population to ensure that the population includes all vehicles that could have the compromised part; the correct US population is shown above. On May 5, 2022, DTNA amended the chronology with an updated summary of warranty claims and field reports on US vehicles. Part 573 Safety Recall Report 22V-230 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Remedy : Description of Remedy Program : Windshield wiper arm and linkage parts will be inspected and replaced as needed. Repairs will be performed by Daimler Truck North America authorized service facilities. Daimler Truck North America shall be offering a refund for owner-paid repairs covered by this recall if the repair was performed prior to the date indicated in the reimbursement plan, which will be posted with owner’s notification letter. Owners are directed to seek reimbursement through authorized dealers. How Remedy Component Differs from Recalled Component : NR Identify How/When Recall Condition was Corrected in Production : NR Recall Schedule : Description of Recall Schedule : Customer notification will be made by first class mail using Daimler Truck North America records to determine the customers affected. Planned Dealer Notification Date : JUN 06, 2022 – JUN 06, 2022 Planned Owner Notification Date : JUN 06, 2022 – JUN 06, 2022 * NR – Not Reported

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