SC0453 – Steering Wheel May Loosen and Detach – 2024 Mack MD Trucks

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Date Number Release Page 11.2023 SC0453 01 1(6) Mack Medium Duty Steering Wheel Bolt Torque MD6 and MD7 RECALL INFORMATION (November 2023) Mack has determined that certain model year 2024 Mack Medium Duty (“MMD”) chassis, were manufactured with a possible under or over torque condition on the steering wheel mounting hardware. The steering wheel mounting fastener may not be torqued to specification. The improperly torqued fastener could result in a loss of clamp load on the steering wheel to steering shaft causing excessive play/looseness in the steering wheel. To ensure that these vehicles meet Mack’s stringent quality requirements, replacement and torque of the affected fastener will be required. VEHICLES AFFECTED Certain Mack MD6 and MD7 vehicles manufactured between September 19, 2023, through November 5, 2023. VEHICLE QUANTITY There are 75 vehicles affected by this recall (74 U.S., 1 Canada). Safety R ecall Mack Trucks Inc. Greensboro, NC USA Mack Truck Inc. Safety Recall Page 2 of 6 Parts Order parts through normal process. Part Number Part description Quantity 82735908 Flange Screw, M12*31 1 Repair Instructions 1. Secure vehicle for service by parking on a level surface. 2. Apply parking brake. 3. Place the transmission in neutral or park. 4. Install wheel chocks. 5. Disconnect the cable from the negative terminal. 6. Turn the steering wheel so that the wheels point straight ahead. Mack Truck Inc. Safety Recall Date 11.2023 Page 3 of 6 7. Remove the horn button. 8. Disconnect the connector. 9. Remove the screw. Important Note Discard the screw Mack Truck Inc. Safety Recall Page 4 of 6 10. Install new steering wheel mounting screw 82735908. 11. Torque steering wheel screw. Tightening Torque Steering wheel, screw 85 ± 5Nm (63 ± 4 lb-ft.) 12. Connect the connector. 13. Install the horn button. Mack Truck Inc. Safety Recall Date 11.2023 Page 5 of 6 14. Connect the cable to the negative terminal. 15. Remove the wheel chocks. 16. Release the vehicle to the customer. Mack Truck Inc. Safety Recall Page 6 of 6 REIMBURSEMENT This repair is covered by an authorized Safety recall. Reimbursement is obtained through the normal claim handling process. UCHP Reimbursement Claim Type (used only when uploading from the Dealer Business System) 40 Recall Status Vehicle repaired per instructions 1-Modified per instructions Labor Codes 6411-03-02-01 Steering Wheel, Replacement 0.3 Causal Part 82735908 Authorization Number C0324 Note: Dealers are to perform Safety Recall on all subject vehicles at no charge to the vehicle owner regardless of mileage, age of vehicle or ownership (original purchaser or subsequent purchasers). Whenever vehicles are subject to a Safety Recall are brought to your dealership for service, or taken into your dealership vehicle inventory, it is strongly recommended that every effort be made to perform the recall correction before the vehicle is sold or released to the owner.

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MACK TRUCKS RECALL ALERT © Mack Trucks, Inc. CONFIDENTIAL – For limited distribution only to circulation list above. This bulletin, and any information herein, is subject to change by Company without notice. For the most current and accurate information, always refer to Trucks Dealer Portal for the electronic version of this document. Description The steering wheel attachment bolt may loosen and could separate from the steering shaft, resulting in a loose or detached steering wheel. If in operation, there could be a loss of control of the vehicle which could result in a crash. Owners will be notified and instructed to not drive their vehicles until recall repairs have been completed. There have been no field reports, warranty claims or customer complaints associated with this issue. The remedy will be to replace the steering wheel retention bolt and tighten to specification. Model and Model Years Affected • Certain 2024 MD6 and MD7 model vehicles manufactured September 19, 2023, through October 05, 2023. Vehicle Quantities • 75 vehicles (74 US, 1 Canada) Dealer Responsibilities • The National Traffic and Motor Vehicle Safety Act and Canadian Motor Vehicle Safety Act require dealers to ensure that all new and used vehicles are free of safety defects and comply with all relevant safety standards at the time of delivery to the consumer. • Dealers should make their personnel aware of the safety recall. In the event that a dealer has a vehicle included in the safety recall in their inventory to be sold, the condition must be corrected before releasing it to a customer. Notification Release Schedule • Vehicle list will be posted on the Trucks Dealer Portal November 10, 2023. • Owner notification letters will be released on or before December 15, 2023. • Repair Instruction will be released once they are available. Contact If you have questions or concerns about this recall, contact the Regulatory Affairs Department at vtna.regulatoryaffairs@volvo.com. Subject: Safety Recall SC0453, Steering Wheel Bolt Not Tightened to Specification Recall Number: SRA-M453 Date: November 10, 2023 Applicable Markets: ☒U.S. ☒Canada ☐ Export

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 23V-746 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Mack Trucks, Inc. Submission Date : NOV 07, 2023 NHTSA Recall No. : 23V-746 Manufacturer Recall No. : SC0453 Manufacturer Information : Manufacturer Name : Mack Trucks, Inc. Address : 2100 Mack Boulevard PO Box M Allentown PA 18105-5000 Company phone : 610-709-2131 Population : Number of potentially involved : 74 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2024-2024 Mack MD Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : HATCHBACK Power Train : DIESEL Descriptive Information : The recall population is vehicles built when the incorrect tool was being used to install the steer shaft retention bolt between September 19, 2023-October 5, 2023 which may have resulted in a over-torque or under torque condition. Production Dates : SEP 19, 2023 – OCT 05, 2023 VIN Range 1 : Begin : 1M2MDBAA9RS012220 End : 1M2MDBAB1RS074381 ✔ Not sequential Description of Defect : Description of the Defect : The steering wheel attachment bolt may loosen and could separate from the steering shaft, resulting in a loose or detached steering wheel. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : If the steering wheel attachment bolt loosens and separates from the steering shaft it could result in a loose or detached steering wheel. If in operation, there could be a loss of control of the vehicle which could result in a crash. Description of the Cause : Use of an incorrect tool during assembly and in-adequate process control of torque and torque auditing within our assembly facilities. Identification of Any Warning that can Occur : The driver may notice excessive play/looseness in the steering wheel which could provide warning. Involved Components : Part 573 Safety Recall Report 23V-746 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Component Name 1 : Flange Screw Component Description : 12*1.75*31 8-8WSHP DP LCK Component Part Number : 82735908 Supplier Identification : Component Manufacturer Name : Mack Trucks Address : 7825 National Service Rd. Greensoboro North Carolina 27409-9667 Country : United States Chronology : October 11, 2023 Volvo Product Safety Office receives a report of a potential issue in our factory with a critical joint (torque control) and a formal investigation is opened. October 17, 2023 Findings from the investigation are reviewed by the Product Safety Evaluation Committee and the recommendation is that this is be brought to Product Safety Committee as a potential product safety defect. November 2, 2023 The Product Safety Committee meets and decides that a product safety defect exists. November 7, 2023 573 Report filed with NHTSA There have been no accidents or injuries related to this issue, there have been no warranty claims, field reports or customer complaints associated with this issue. Description of Remedy : Description of Remedy Program : Owners will be notified and instructed to not drive their vehicles. Vehicles will be recalled and remedy program will be to remove and replace the steering wheel retention bolt. Reimbursement for the recall will be covered by Manufacturer’s Reimbursement Plan on file with NHTSA. How Remedy Component Differs from Recalled Component : There is no change in the bolt design. A new bolt will be used to ensure there is no issue and properly torqued, 82735908/Flange Screw/12*1.75*31 8-8WSHP DP LCK Identify How/When Recall Condition was Corrected in Production : Corrected automated torque tooling in factory, increased frequency of auditing both of assembly operation and factory torque records to ensure correct records are in place. Part 573 Safety Recall Report 23V-746 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Recall Schedule : Description of Recall Schedule : Dealer notification will begin on November 10, 2023 and owner notification will begin on or before December 15, 2023 Planned Dealer Notification Date : NOV 10, 2023 – NOV 10, 2023 Planned Owner Notification Date : DEC 15, 2023 – DEC 15, 2023 * NR – Not Reported

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This Notice applies to your vehicle, see enclosed “Notice of Vehicle Recall” DEAR MACK TRUCK OWNER: This notice is sent to you in accordance with the requirements of the National Traffic and Motor Vehicle Safety Act. Mack Trucks, Inc. has decided that a defect which relates to motor vehicle safety exists in certain 2024 MD6 and MD7 model vehicles manufactured September 19, 2023, through October 05, 2023. SAFETY DEFECT: The steering wheel attachment bolt may loosen and could separate from the steering shaft, resulting in a loose or detached steering wheel. SAFETY RISK: If in operation, there could be a loss of control of the vehicle which could result in a crash. Owners are instructed to not drive their vehicles until the recall repair has been completed. There are no precautions you can take other than having your vehicle repaired by a Mack service center. Dealers will replace the steering wheel retention bolt and tighten to specification. Recall repairs will be performed at no cost to you. The time required to repair your vehicle is approximately 0.3 hour. You should contact the nearest Mack Parts and Service Center and make an appointment. You can locate the closest Mack Parts and Service Center by going online to http://www.macktrucks.com/ and selecting “Dealer & Service Locations” or by calling our toll-free number: 1-800-866-1177. PRECAUTIONS YOU CAN TAKE: TIME REQUIRED FOR THE REPAIR: WHAT YOU SHOULD DO: SC0453_OWNER_LTR November 2023 IMPORTANT SAFETY RECALL SC0453 NHTSA RECALL # 23V-746 NOTICE REGARDING LEASED VEHICLES: If you are a Lessor of vehicles subject to this Notice, you have an obligation under Federal Law to provide a copy of this Notice to all Lessees within 10 days of your receipt of this Notice. Further, you must maintain a record, which identifies the Lessee(s) to whom you send a copy of this letter, the date you send this letter, and the Vehicle Identification Number(s) of the vehicle(s) that you have leased to that lessee. For purposes of this Notice, the term Lessor means: a person or entity that is the owner, as reflected on the vehicle’s title, of any five or more leased vehicles (as defined in CFR Section 577.4), as of the date of notification by the manufacturer of the existence of a safety- related defect or non-compliance with a Federal Motor Vehicle Safety Standard in one or more of the leased motor vehicles. OWNER RECALL RESPONSE CARD: The enclosed “Notice of Vehicle Recall” identifies your vehicle. If you no longer own the vehicle, please help us update our records by completing the “Vehicle Disposition Record” portion of the enclosed postage-free Notice of Mandatory Safety Campaign card and mailing it back to us. ASSISTANCE/ COMPLAINTS: PRE NOTIFICATION REMEDIES: If your vehicle has not been repaired within a reasonable time after delivering it to a Mack Parts and Service Center, please contact: Mack Trucks, Inc. North American Certification and Compliance P.O. Box 26115 Greensboro, NC 27402-6115 vtna.regulatoryaffairs@volvo.com You may also submit complaints to the Administrator of the National Highway Traffic Safety Administration (1200 New Jersey Avenue, S.E., Washington DC 20590 or call the toll-free Auto Safety Hot Line at 1-888- 327-4236 (TTY: 1-800-424-9153), or go to http://www.safercar.gov if you believe that Mack has failed to remedy the defect without charge, or has failed to remedy the vehicle within 60 days of the owners first tender to obtain repair following the earliest time that parts are available. If you have previously paid for repairs as a result of this issue, you may be entitled to recovery of those expenses. Submit copies of all documentation supporting your claim according to the rules specified in the “General Plan for Reimbursement of Pre- notification Remedies” provided in this mailing. We regret any inconvenience this may cause to your operation, but hope you will appreciate our sincere efforts to demonstrate Mack’s commitment to provide our customers with the best possible product. MACK TRUCKS, INC.

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