22PBK – Display May Freeze – 2022-2023 Peterbilt 365, 367, 389, 567, 579

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22PBK – Digital Display Freeze NHTSA #22V779, TC #2022-591 Number 22PBK Supplier Stoneridge Description 22PBK – Digital Display Freeze NHTSA #22V779, TC #2022-591 Date 11/1/2022 What’s New Non-Compliance Recall – Clone The 15-inch digital display may freeze without warning. The screen is non-responsive and can be reset only by a key cycle, battery disconnect, or re-programming, which may increase the risk of a crash. Affected vehicles fail to comply with FMVSS/CMVSS Nos. 101, 108, 121, and 136. Introduction Loss of speedometer, and/or other functionality such as warnings, indicators, and gauges. Display freeze may cause loss of visibility to vehicle speed and/or other warnings that appear on the display while the vehicle is in operation. Situation 42,317 (38,599 US / 3,718 Canada) Model Year 2022-2023 365, 367, 389, 567, and 579 chassis built from February 15, 2021, through September 8, 2022, and equipped with a 15-inch digital display. Resolution This bulletin will be updated when the repair procedure and parts are available. Federal Law It is a violation of Federal law for a dealer to sell or lease new vehicles covered by this recall until the defect or noncompliance has been corrected. Links Authored by D. Cook

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  22PBK – Digital Display Freeze NHTSA #22V779, TC #2022-591 Number 22PBK Description 22PBK – Digital Display Freeze NHTSA #22V779, TC #2022-591 Date 11/1/2022 What’s New Non-Compliance Recall – The repair procedures are now available. The 15-inch digital display may freeze without warning. The screen is non-responsive and can be reset only by a key cycle, battery disconnect, or re-programming, which may increase the risk of a crash. Affected vehicles fail to comply with FMVSS/CMVSS Nos. 101, 108, 121, and 136. Introduction Loss of speedometer, and/or other functionality such as warnings, indicators, and gauges. Display freeze may cause loss of visibility to vehicle speed and/or other warnings that appear on the display while the vehicle is in operation. Situation 42,317 (38,599 US / 3,718 Canada) Model Year 2022-2023 365, 367, 389, 567, and 579 chassis built from February 15, 2021, through September 8, 2022, and equipped with a 15-inch digital display. Federal Law It is a violation of Federal law for a dealer to sell or lease new vehicles covered by this recall until the defect or noncompliance has been corrected. Warranty There is no time or mileage limit for this recall. Peterbilt will pay for parts at dealer net plus applicable mark up and labor: • 0.5 hours labor to process a PVP file, program the Digital Display and VECU software with DAVIE4. Use Quick Claim Code 22PBKA. • 0.4 hours labor to process a PVP file, and program VECU software only with DAVIE4. (If Digital Display is found to be at the most current software level). Use Quick Claim Code 22PBKB. • 0.3 hours labor to process a PVP file and verify software levels of both Digital Display and VECU. If both the Digital Display and the VEC software are found to be at the most current levels, no programming is required. Use Quick Claim Code 22PBKC. PRWS CLAIM CODING Campaign Code: Claim Category: Customer Concern Code Corrective Action Code Failure Location Supplier Code 22PBK Truck 173 23 003- 006- 001 Campaign Type Repair Type Causal Code Responsibility Code: Causal Part SRT Code Non-Compliance Recall Campaign Proactive 51 Campaign Q97-6022 B22-PKA – 0.5 hours labor to process a PVP file, program the Digital Display and VECU software with DAVIE4. B22-PKB – 0.4 hours labor to process a PVP file, and program VECU software only with DAVIE4. (If Digital Display is found to be at the most current software level). B22-PKC – 0.3 hours labor to process a PVP file and verify software levels of both Digital Display and VECU. If both the Digital Display and the VECU software are found to be at the most current levels, no programming is required. Procedure Please follow your dealership’s safety procedures and precautions to ensure the vehicle can be safely repaired and maintained. See attached procedure in Links section. Parts No parts – running PVP and performing software updates only. Links 22PBK – Chassis List 22PBK Repair Procedure 22PBK U.S. Final customer letter 22PBK Canada Final customer letter Authored by D. Cook Revision History 11/22/2022 – Revised from Interim to Final bulletin.

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Our records indicate that these vehicles are affected by 22PBK and are owned by December 15, 2022 Subject: Non-Compliance Recall: 22PBK – Digital Display Freeze NHTSA: #22V779 EXPIRATION DATE: NONE This notice applies to your vehicle. Your VIN(s) can be found on the bottom or back of this page. Dear Peterbilt Customer, This notice is sent to you in accordance with the National Traffic and Motor Vehicle Safety Act. Peterbilt has decided that certain 2022 through 2023 Model Year 365, 367, 389, 567, and 579 chassis built during 02/15/2021 through 09/08/2022 fail to conform to Federal Motor Vehicle Safety Standard (“FMVSS”) No. 101 – Controls and Displays; FMVSS No. 108 – Lamps, Reflective Devices, and Associated Equipment; FMVSS No. 121 – Air Brake Systems; and FMVSS No. 136 – Electronic Stabilty Control Systems for Heavy Vehicles. The 15-inch digital display may freeze without prior indication, and can be reset only by a key cycle, battery disconnect, or re-programming, which may increase the risk of a crash. What is the problem? The 15-inch digital display may freeze without prior indication. What will your dealer do? Updates to various chassis software depending on current update status. What should you do? Please contact your Peterbilt dealer to schedule this repair. Peterbilt Motors Company has initiated this recall to remedy the issue at no charge to you. Your dealer may update the chassis PVP, and/or VECU, and/or digital display software, depending on what is needed. Please contact your Peterbilt dealer to schedule an appointment for these services. To find your Peterbilt dealer, please visit the Dealer Locator at www.Peterbilt.com or scan the QR code. When contacting your Peterbilt dealer, reference the Safety Recall number and the NHTSA number. This repair may take up to 1 hour of labor depending on dealer scheduling. If you require further information about this recall, reimbursement of a pre-notification remedy associated with this recall, or experience any difficulty in making arrangements for this repair, please contact: Peterbilt Motors Company, 1700 Woodbrook St, Denton, TX 76205, Attn: Customer Service Department. If you conclude that Peterbilt has not enabled you to remedy this defect in a reasonable time and without charge, you may submit a complaint to: Administrator, National Highway Traffic Safety Administration, 1200 New Jersey Avenue, S.E., Washington, DC 20590, or call the toll free Vehicle Safety Hotline at 1-888-327-4236 (TTY: 1-800-424-9153); or go to http://www.safercar.gov. Federal regulation requires that any vehicle lessor receiving this recall notice must forward a copy of this notice to the lessee within ten days. If you no longer own this vehicle, we would appreciate your advising us of the new owner. Please send all known ownership and address changes to [email protected]. We apologize for any inconvenience this preventive procedure may cause and thank you for your participation in helping Peterbilt provide the highest levels of customer satisfaction and service expertise. We value your business and appreciate your ongoing loyalty to Peterbilt and its dealer network. Industry-leading quality, performance and reliability are hallmarks of Peterbilt products, and we thank you for making Peterbilt your truck of choice. Sincerely, Michelle Ponsonby Director of Customer Service Peterbilt Motors Company IMPORTANT NON-COMPLIANCE RECALL Scan this QR code to open the Peterbilt Dealer Locator. AHEEEHA CJDHENJNDLEFJHIDO AHEEEHA BNFFFNB MGAOALIKAKBON M A BNFFFNB FOBAOCFH DFNHJDGCCBKADJAGMAINALAB ALLJFHFHEBDIANDGHJ EJOHGEGMKHBMD IEMDMFED JNMCEJHOE AFCDOGANADFML MFOEDEFHMLGBKOEIDLMLBDNJENIEOCHFI MFFNFNE ACOBBOMLCEMI KDMAHFHACOO A BBB A JCLKDADFBCG JHDAAFEAGNHHC HHHHHHH HH H H HH H H H H H H

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-779 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : PACCAR Incorporated Submission Date : OCT 18, 2022 NHTSA Recall No. : 22V-779 Manufacturer Recall No. : 22KWK and 22PBK Manufacturer Information : Manufacturer Name : PACCAR Incorporated Address : 777 106TH AVENUE NORTHEAST BELLEVUE WA 98004 Company phone : 940 591 4220 Population : Number of potentially involved : 76,492 Estimated percentage with defect : 1 % Vehicle Information : Vehicle 1 : 2022-2023 Kenworth T680 Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : Affected vehicles include a 15inch digital display and certain software versions. Production Dates : FEB 15, 2021 – SEP 15, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 2 : 2022-2023 Kenworth T880 Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : Affected vehicles include a 15inch digital display and certain software versions. Production Dates : FEB 15, 2021 – SEP 15, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 3 : 2022-2023 Kenworth W990 Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : Affected vehicles include a 15inch digital display and certain software versions. Production Dates : FEB 16, 2021 – SEP 14, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Part 573 Safety Recall Report 22V-779 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Vehicle 4 : 2022-2023 Peterbilt Model 365 Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : Affected vehicles include a 15inch digital display and certain software versions. Production Dates : JUL 13, 2021 – AUG 30, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 5 : 2022-2023 Peterbilt Model 367 Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : Affected vehicles include a 15inch digital display and certain software versions. Production Dates : JUL 13, 2021 – AUG 29, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 6 : 2022-2023 Peterbilt Model 389 Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : Affected vehicles include a 15inch digital display and certain software versions. Production Dates : FEB 16, 2021 – SEP 15, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 7 : 2022-2023 Peterbilt Model 567 Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : Affected vehicles include a 15inch digital display and certain software versions. Production Dates : FEB 15, 2021 – SEP 15, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 8 : 2022-2023 Peterbilt Model 579 Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : Affected vehicles include a 15inch digital display and certain software versions. Production Dates : FEB 16, 2021 – SEP 15, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Part 573 Safety Recall Report 22V-779 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Noncompliance : Description of the Noncompliance : The display may freeze, resulting in an inability for information to be updated. FMVSS 1 : 101 – Control and displays FMVSS 2 : 102 – Trans shift lever seq/starter interlock/trans braking effect Description of the Safety Risk : Loss of current indicators and warnings, such as the speedometer and telltales, may increase the risk of a crash. Description of the Cause : The software did not properly handle errata. Identification of Any Warning that can Occur : None. Involved Components : Component Name 1 : DISPLAY-DRIVER INFO 15IN Component Description : 15inch Digital Display Component Part Number : Q43-1180, Q43-1195, Q43-1200, Q43-1202, Q43-6085, Q43-6090, Q43-6104 Supplier Identification : Component Manufacturer Name : Stoneridge Address : 39675 Mackenzie Drive Suite 400 Novi Michigan 48377 Country : United States Chronology : 08-16-22: Engineering informed the Product Safety & Compliance department of the potential for the digital display to freeze unexpectedly. Investigation opened. 09-09-22: Additional reviews with the supplier were held, and engineering confirmed that the turn signal telltales and emissions related telltales were not affected. 09-15-22: Updated software implemented to address concern. 09-26-22: Investigation details summarized and warranty search updated. A total of 57 relevant warranty claims were identified, with build dates ranging from May 2021 through September 2022. 10-08-22: Total affected population firmed. 10-10-22: Safety committee meeting held. The committee concurs that a safety related non-compliance exists Part 573 Safety Recall Report 22V-779 Page 4 The information contained in this report was submitted pursuant to 49 CFR §573 and that the affected population shall be recalled. Description of Remedy : Description of Remedy Program : Paccar will notify owners and dealers, and affected vehicles will have the software updated. Owners who incurred costs to obtain a remedy for the problem addressed in the recall in advance of receiving notification may seek reimbursement through the process outlined in the general reimbursement plan on file. How Remedy Component Differs from Recalled Component : Remedy components have an updated software version installed. Identify How/When Recall Condition was Corrected in Production : An updated software version implemented on September 15, 2022. Recall Schedule : Description of Recall Schedule : Customers will be notified within 60 days. Planned Dealer Notification Date : DEC 16, 2022 – DEC 16, 2022 Planned Owner Notification Date : DEC 16, 2022 – DEC 16, 2022 * NR – Not Reported

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-779 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : PACCAR Incorporated Submission Date : OCT 17, 2022 NHTSA Recall No. : 22V-779 Manufacturer Recall No. : 22KWK and 22PBK Manufacturer Information : Manufacturer Name : PACCAR Incorporated Address : 777 106TH AVENUE NORTHEAST BELLEVUE WA 98004 Company phone : 940 591 4220 Population : Number of potentially involved : 76,490 Estimated percentage with defect : 1 % Vehicle Information : Vehicle 1 : 2022-2023 Kenworth T680 Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : Affected vehicles include a 15inch digital display and certain software versions. Production Dates : FEB 15, 2021 – SEP 15, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 2 : 2022-2023 Kenworth T880 Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : Affected vehicles include a 15inch digital display and certain software versions. Production Dates : FEB 15, 2021 – SEP 15, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 3 : 2022-2023 Kenworth W990 Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : Affected vehicles include a 15inch digital display and certain software versions. Production Dates : FEB 16, 2021 – SEP 14, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Part 573 Safety Recall Report 22V-779 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Vehicle 4 : 2022-2023 Peterbilt Model 365 Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : Affected vehicles include a 15inch digital display and certain software versions. Production Dates : JUL 13, 2021 – AUG 30, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 5 : 2022-2023 Peterbilt Model 367 Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : Affected vehicles include a 15inch digital display and certain software versions. Production Dates : JUL 13, 2021 – AUG 29, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 6 : 2022-2023 Peterbilt Model 389 Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : Affected vehicles include a 15inch digital display and certain software versions. Production Dates : FEB 16, 2021 – SEP 15, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 7 : 2022-2023 Peterbilt Model 567 Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : Affected vehicles include a 15inch digital display and certain software versions. Production Dates : FEB 15, 2021 – SEP 15, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 8 : 2022-2023 Peterbilt Model 579 Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : Affected vehicles include a 15inch digital display and certain software versions. Production Dates : FEB 16, 2021 – SEP 15, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Part 573 Safety Recall Report 22V-779 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Noncompliance : Description of the Noncompliance : The display may freeze, resulting in an inability for information to be updated. FMVSS 1 : 101 – Control and displays FMVSS 2 : 102 – Trans shift lever seq/starter interlock/trans braking effect Description of the Safety Risk : Loss of current indicators and warnings, such as the speedometer and telltales, may increase the risk of a crash. Description of the Cause : The software did not properly handle errata. Identification of Any Warning that can Occur : None. Involved Components : Component Name 1 : DISPLAY-DRIVER INFO 15IN Component Description : 15inch Digital Display Component Part Number : Q43-1180, Q43-1195, !43-1200, Q43-1202, Q43-6085, Q43-6090, Q43-6104 Supplier Identification : Component Manufacturer Name : Stoneridge Address : 39675 Mackenzie Drive Suite 400 Novi Michigan 48377 Country : United States Chronology : 08-16-22: Engineering informed the Product Safety & Compliance department of the potential for the digital display to freeze unexpectedly. Investigation opened. 09-09-22: Additional reviews with the supplier were held, and engineering confirmed that the turn signal telltales and emissions related telltales were not affected. 09-15-22: Updated software implemented to address concern. 09-26-22: Investigation details summarized and warranty search updated. A total of 57 relevant warranty claims were identified, with build dates ranging from May 2021 through September 2022. 10-08-22: Total affected population firmed. 10-10-22: Safety committee meeting held. The committee concurs that a safety related non-compliance exists Part 573 Safety Recall Report 22V-779 Page 4 The information contained in this report was submitted pursuant to 49 CFR §573 and that the affected population shall be recalled. Description of Remedy : Description of Remedy Program : Paccar will notify owners and dealers, and affected vehicles will have the software updated. Owners who incurred costs to obtain a remedy for the problem addressed in the recall in advance of receiving notification may seek reimbursement through the process outlined in the general reimbursement plan on file. How Remedy Component Differs from Recalled Component : Remedy components have an updated software version installed. Identify How/When Recall Condition was Corrected in Production : An updated software version implemented on September 15, 2022. Recall Schedule : Description of Recall Schedule : Customers will be notified within 60 days. Planned Dealer Notification Date : DEC 16, 2022 – DEC 16, 2022 Planned Owner Notification Date : DEC 16, 2022 – DEC 16, 2022 * NR – Not Reported

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-779 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : PACCAR Incorporated Submission Date : OCT 27, 2022 NHTSA Recall No. : 22V-779 Manufacturer Recall No. : 22KWK and 22PBK Manufacturer Information : Manufacturer Name : PACCAR Incorporated Address : 777 106TH AVENUE NORTHEAST BELLEVUE WA 98004 Company phone : 940 591 4220 Population : Number of potentially involved : 74,730 Estimated percentage with defect : 1 % Vehicle Information : Vehicle 1 : 2022-2023 Kenworth T680 Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : Affected vehicles include a 15inch digital display and certain software versions. Production Dates : FEB 15, 2021 – SEP 08, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 2 : 2022-2023 Kenworth T880 Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : Affected vehicles include a 15inch digital display and certain software versions. Production Dates : FEB 15, 2021 – SEP 08, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 3 : 2022-2023 Kenworth W990 Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : Affected vehicles include a 15inch digital display and certain software versions. Production Dates : FEB 16, 2021 – SEP 01, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Part 573 Safety Recall Report 22V-779 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Vehicle 4 : 2022-2023 Peterbilt Model 579 Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : Affected vehicles include a 15inch digital display and certain software versions. Production Dates : FEB 16, 2021 – SEP 02, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 5 : 2022-2023 Peterbilt Model 367 Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : Affected vehicles include a 15inch digital display and certain software versions. Production Dates : JUL 13, 2021 – AUG 29, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 6 : 2022-2023 Peterbilt Model 389 Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : Affected vehicles include a 15inch digital display and certain software versions. Production Dates : FEB 16, 2021 – SEP 02, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 7 : 2022-2023 Peterbilt Model 567 Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : Affected vehicles include a 15inch digital display and certain software versions. Production Dates : FEB 15, 2021 – SEP 02, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 8 : 2022-2023 Peterbilt Model 365 Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : Affected vehicles include a 15inch digital display and certain software versions. Production Dates : JUL 13, 2021 – AUG 30, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Part 573 Safety Recall Report 22V-779 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Noncompliance : Description of the Noncompliance : The display may freeze, resulting in an inability for information to be updated. FMVSS 1 : 101 – Control and displays FMVSS 2 : 102 – Trans shift lever seq/starter interlock/trans braking effect Description of the Safety Risk : Loss of current indicators and warnings, such as the speedometer and telltales, may increase the risk of a crash. Description of the Cause : The software did not properly handle errata. Identification of Any Warning that can Occur : None. Involved Components : Component Name 1 : DISPLAY-DRIVER INFO 15IN Component Description : 15inch Digital Display Component Part Number : Q43-1180, Q43-1195, Q43-1200, Q43-1202, Q43-6085, Q43-6090, Q43-6104 Supplier Identification : Component Manufacturer Name : Stoneridge Address : 39675 Mackenzie Drive Suite 400 Novi Michigan 48377 Country : United States Chronology : 08-16-22: Engineering informed the Product Safety & Compliance department of the potential for the digital display to freeze unexpectedly. Investigation opened. 09-08-22: Updated software implemented to address concern. 09-09-22: Additional reviews with the supplier were held, and engineering confirmed that the turn signal telltales and emissions related telltales were not affected. 09-26-22: Investigation details summarized and warranty search updated. A total of 57 relevant warranty claims were identified, with build dates ranging from May 2021 through September 2022. 10-08-22: Total affected population firmed. 10-10-22: Safety committee meeting held. The committee concurs that a safety related non-compliance exists Part 573 Safety Recall Report 22V-779 Page 4 The information contained in this report was submitted pursuant to 49 CFR §573 and that the affected population shall be recalled. Description of Remedy : Description of Remedy Program : Paccar will notify owners and dealers, and affected vehicles will have the software updated. Owners who incurred costs to obtain a remedy for the problem addressed in the recall in advance of receiving notification may seek reimbursement through the process outlined in the general reimbursement plan on file. How Remedy Component Differs from Recalled Component : Remedy components have an updated software version installed. Identify How/When Recall Condition was Corrected in Production : An updated software version implemented on September 8, 2022. Recall Schedule : Description of Recall Schedule : Customers will be notified within 60 days. Planned Dealer Notification Date : DEC 16, 2022 – DEC 16, 2022 Planned Owner Notification Date : DEC 16, 2022 – DEC 16, 2022 * NR – Not Reported

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