2022–2027 Mack Terrapro (te): Engine And Engine Cooling recall
NHTSA campaign 26V139000 · 775 units potentially affected · filed Mar 11, 2026
What's 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."
Why it matters
Starting the vehicle while in gear may cause unexpected vehicle movement, increasing the risk of a crash or injury.
The fix
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 NHTSA.gov March 18, 2026.
Recall details
- NHTSA campaign
- 26V139000
- Manufacturer no.
- SC0492
- Manufacturer
- Mack Trucks, Inc.
- Component
- ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE
- Units affected
- 775
- Report received
- Mar 11, 2026
- Owner letters
- Apr 14, 2026
- Type
- Vehicle
Check whether your vehicle is included with the official NHTSA VIN lookup or your dealer. Repairs for safety recalls are free.
Vehicles covered
- Mack Terrapro (te) 2022, 2023, 2024, 2025, 2026, 2027