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💥 Crash risk🩹 Injury riskNHTSA 26V139📅 Mar 12, 2026

2022–2027 Mack Terrapro (te) recall: engine

⚠️ 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."

💥 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.

Is the fix free? Yes. Safety recall repairs are free at any authorized dealer under federal law, including parts and labor. (Vehicles more than 15 years old when the recall was announced can be excluded, but most manufacturers still fix them.)
NHTSA campaign
26V139000
Manufacturer recall #
SC0492
Manufacturer
Mack Trucks, Inc.
Vehicles affected
775
Component
ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE
Owner phone
1-800-866-1177
NHTSA hotline
1-888-327-4236
Owner letters mailed
Apr 14, 2026
Built
Jan 11, 2021 – Feb 24, 2026
Recall started by
MFR

Vehicles in this recall

Is your car affected? Recalls apply to specific VINs. Check my VIN

FAQ

Is the 26V139 recall repair free?

Yes. Safety recall repairs are free at any authorized dealer under federal law, including parts and labor. (Vehicles more than 15 years old when the recall was announced can be excluded, but most manufacturers still fix them.)

Which vehicles are included in recall 26V139?

2022–2027 Mack Terrapro (te). 775 vehicles may be affected. Check your exact car with its 17-character VIN.

What should I do?

Check your VIN, then call any authorized Mack dealer to book the free repair or call the manufacturer at 1-800-866-1177.