NHTSARecalled Mar 11, 2026 · #26V139000
ECU Software Error May Cause Unexpected Vehicle Movement/FMVSS 102
Hazard
Vehicle safety defect
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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." Starting the vehicle while in gear may cause unexpected vehicle movement, increasing the risk of a crash or injury.
Product details
- Product
- ECU Software Error May Cause Unexpected Vehicle Movement/FMVSS 102
- 2022-2027 TerraPro
- Type
- Vehicle
- Manufacturer
- Mack Trucks, Inc.
- Model numbers
- —
- UPCs
- —
What you should do
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.