Recall 26V139000: 2022–2027 Mack Terrapro (te)

Updated from NHTSA data · How we count

Report date
Mar 11, 2026
Vehicles affected
775
Models
1
Initiated by
Manufacturer

The problem

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."

The risk

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.

Affected vehicles

Details

NHTSA campaign
26V139000
Manufacturer campaign
SC0492
Manufacturer
Mack Trucks, Inc.
Owner letters
Apr 14, 2026
Components
Engine and engine cooling:engine:engine control module (ecu/ecm):software (Engine)

Recall repairs are free at authorized dealers. To see if your vehicle is included, enter your VIN at NHTSA.gov or call the manufacturer.

Source: U.S. National Highway Traffic Safety Administration (NHTSA) Office of Defects Investigation public data. Complaints are submitted by owners and are not verified by NHTSA or by us; a complaint does not prove a defect exists. Methodology