- Vehicles
- 148
- Built between
- Jun 2023 – Feb 2025
- Models
- 1
- Recall type
- Vehicle
- Initiated by
- Manufacturer
- Owners notified
- 14 August 2025
- Repaired
- 43%
- Unrepaired
- 85
Does this affect my vehicle?
This recall covers vehicles built between June 2023 and February 2025. If yours was built outside that window, it is not part of this recall.
- 2024-2026 Mack MD (electric)Built June 2023 to February 2025
Repair progress
85 of 148 vehicles in this recall had still not been repaired as of Q2 2026.
43% repaired — 63 of 148 reported
Manufacturers file these figures with NHTSA each quarter. Vehicles the manufacturer could not trace, or that have been scrapped or exported, are counted separately and are not included in the unrepaired figure.
What the defect is
Mack Trucks, Inc. (Mack) is recalling certain 2024-2026 Mack MD vehicles. When the Controller Area Network (CAN) communications are interrupted, the throttle signal from the electro mobility control unit may retain the last known throttle setting, and the engine will not return to idle as intended. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 124, "Accelerator Control Systems."
What could happen
An engine that does not return to idle quickly enough can cause a loss of vehicle control, increasing the risk of a crash.
What gets fixed
Dealers will update the control unit software, free of charge. Owner notification letters were mailed August 14, 2025.
Parts involved
- Control Unit24854236GVCU Install-MDE
Part numbers are as filed by the manufacturer and are listed for reference. Your dealer will confirm the correct part for your vehicle.
Timeline
- Vehicles builtJune 2023 to February 2025
- Recall reported to NHTSA23 June 2025
- Owners notified14 August 2025
- Latest repair reportQ2 2026 — 43% repaired
Your rights
A safety recall repair is free. Under US federal law the manufacturer must fix a safety defect at no cost to you — no charge for parts, labor or diagnosis — whether or not you are the original owner. A dealer cannot charge you for recall work, and cannot require you to have bought the vehicle from them.
That entitlement is not unlimited. It applies where the vehicle was first sold less than 15 years before the recall was announced — 5 years for tires. Past that a manufacturer may still do the repair free of charge, and many do, but they are no longer obliged to. This recall was reported on 23 June 2025.
To arrange the repair, contact any franchised dealer for the brand. If a dealer refuses the work or tries to charge for it, you can report that to NHTSA at nhtsa.gov/recalls or on 1-888-327-4236.
Manufacturer contact
Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0481.
Official source
- Manufacturer's recall number
- SC0481
- Recalling manufacturer
- Mack Trucks, Inc.
- Safety standard
- FMVSS 124
- Recall initiated by
- MFR
Everything on this page — the models listed, the build dates and the repair figures — comes from the manufacturer's filing to NHTSA and describes the vehicle line as a whole, not any individual car. Only the manufacturer can confirm whether a specific vehicle is affected, and whether its recall work has already been carried out. Check yours by VIN and read the official notice at nhtsa.gov/recalls.
Check your own vehicle
This page describes the recall, not any one car. To see which recalls cover a specific vehicle, search by make, model and year.
A VIN lookup here identifies your vehicle and shows recalls issued for that make, model and year. It cannot tell you what is still open on your individual car - only the manufacturer knows that. Search by VIN instead, or check your VIN at nhtsa.gov for whether a recall is still open on your individual car.