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Mack 2022–2027 Engine And Engine Cooling recall

Recalled March 11, 2026 · NHTSA recall 26V139000 · Mack

Hazard
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 NHTSA.gov March 18, 2026.
Units
775 units

Description

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."

What to 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.

Product
Mack TERRAPRO (TE)
Manufacturer(s)
Mack Trucks, Inc.

Source: U.S. National Highway Traffic Safety Administration. Official recall notice on nhtsa.gov →