Delay returning to engine idle/fmvss 124
Defect Summary
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."
Safety Consequence
An engine that does not return to idle quickly enough can cause a loss of vehicle control, increasing the risk of a crash.
Corrective Action
Dealers will update the control unit software, free of charge. Owner notification letters were mailed august 14, 2025. Owners may contact mack's customer service at 1-800-866-1177. Mack's number for this recall is sc0481.
Similar Recalls
Other recalls from Mack Trucks, Inc. or involving Electrical System.
FAQ: Recall 25V427000
Your rights, the repair process, and what each field on this page means.
What is recall 25V427000?
NHTSA recall 25V427000 was issued by Mack Trucks, Inc. on June 23, 2025. It addresses: Delay returning to engine idle/fmvss 124. The recall affects approximately 148 vehicles, with the defect involving the Electrical System component.
How do I get this recall repaired?
Contact any authorized Mack Trucks, Inc. dealer and reference NHTSA recall ID 25V427000 or the manufacturer campaign number SC0481. Under federal law, the repair is completely free regardless of vehicle age or owner history.
Is my vehicle included in this recall?
The only way to confirm is to look up your 17-character VIN at nhtsa.gov/recalls. NHTSA's tool will tell you if VIN-by-VIN this exact recall applies.
How long do I have to get a recall repair done?
There is no expiration on most federal safety recalls. Even if your vehicle is years old and you bought it used, the manufacturer is required to perform the repair at no cost.
Where does the data on this page come from?
All information on this page is sourced directly from the U.S. Department of Transportation public dataset for NHTSA recalls. Last refreshed: 2026-05-20. For the most current official notice, visit nhtsa.gov/recalls.