The Recall Desk
HighNHTSA·26V139000·Announced 2026-03-11

Mack TerraPro Trucks Recalled for Engine Control Software Defect

Mack Trucks is recalling 2022-2027 TerraPro trucks because engine software may allow starting while in gear, increasing crash risk.

What this means for you

Real risk of harm even if no illness or injury has been reported yet. Stop using the product and follow the agency's guidance.

Our severity reasoning: The recall involves a risk-of-harm product where unexpected vehicle movement could lead to a crash or injury, but no specific injuries or fatalities have been reported in the source text.

Plain-English summary

Mack Trucks, Inc. is recalling certain 2022-2027 TerraPro trucks due to a defect in the engine control unit (ECU) software. The software may allow the engine to start when the transmission is not in Neutral, causing the vehicles to fail to comply with Federal Motor Vehicle Safety Standard number 102 regarding transmission shift lever sequence and starter interlock.

Starting the vehicle while in gear may cause unexpected vehicle movement, which increases the risk of a crash or injury. Owner notification letters were mailed on April 14, 2026.

Dealers will update the ECU software free of charge to correct the issue. Owners may contact Mack's customer service at 1-800-866-1177 for more information. Mack's number for this recall is SC0492.

The recalled product

Product
MACK TERRAPRO (TE)
Brand
MACK
Manufacturer
Mack Trucks, Inc.
Category
Vehicle — Heavy-Duty Truck
Hazard
Affected units
775

Is your product affected?

Check your packaging against the codes below. If any of them match, the product is part of this recall.

Model numbers (1)

  • TERRAPRO (TE)

Distribution

Distributed nationwide across the United States.

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