2022-2027 Mack Terrapro (Te) recall: software
Mack Trucks, Inc. reported this safety recall on March 11, 2026. It covers about 775 vehicles.
- vehicles affected
- 775
- reported
- Mar 11, 2026
- owners notified
- Apr 14, 2026
Engine and engine cooling: engine: engine control module (ecu/ECM): software
- What is wrong
- Mack Trucks, Inc. (Mack) is recalling certain 2022-2027 TerraPro trucks. The engine control unit (ECU) software may allow the engine to start when the transmission is not in Neutral. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 102, "Transmission Shift Lever Sequence, Starter Interlock, and Transmission Braking Effect."
- Risk
- Starting the vehicle while in gear may cause unexpected vehicle movement, increasing the risk of a crash or injury.
- Remedy
- Dealers will update the ECU software, free of charge. Owner notification letters were mailed April 14, 2026. Owners may contact Mack's customer service at 1‑800‑866‑1177. Mack's number for this recall is SC0492. Vehicle Identification Numbers (VINs) involved in this recall became searchable on March 18, 2026.
Recall number 26V139000
Affected vehicles
Questions about recall 26V139000
Is there a recall on the 2022-2027 Mack Terrapro (Te) software?
Yes. Recall 26V139000, reported on March 11, 2026, covers about 775 vehicles.
What is the fix for recall 26V139000?
Dealers will update the ECU software, free of charge. Owner notification letters were mailed April 14, 2026. Owners may contact Mack's customer service at 1‑800‑866‑1177. Mack's number for this recall is SC0492. Vehicle Identification Numbers (VINs) involved in this recall became searchable on March 18, 2026.
Is the recall repair free?
Safety recall repairs are done free of charge at authorized dealers. A dealer can confirm with the VIN whether a specific vehicle is included and whether the repair has already been done.
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