Mack MD (Electric) recall 25V427000 - Throttle Position Sensor (Tps)

NHTSA · June 23, 2025

• NHTSA recall campaign 25V427000 (Mack), reported June 23, 2025.
• Potentially affected vehicles: 148.
• Component: Throttle Position Sensor (Tps).
• Details as of October 23, 2026; the linked official notice is authoritative for lot codes, VINs, and remedies.

Agency

NHTSA

Posted

June 23, 2025

Recalling firm

Mack Trucks, Inc.

Source ID

25V427000

NHTSA campaign →

How this recall compares

• NHTSA's recalls file lists 137 recall campaigns from Mack Trucks, Inc since 2010, 16 of them reported in 2025.
• At 148 vehicles, it is larger than 35% of the 994 NHTSA campaigns from 2025 with a count of potentially affected vehicles.

Defect

Mack Trucks, Inc. (Mack) is recalling certain 2024-2026 Mack MD vehicles. When the Controller Area Network (CAN) communications are interrupted, the throttle signal from the electro mobility control unit may retain the last known throttle setting, and the engine will not return to idle as intended. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 124, "Accelerator Control Systems."

Consequence

An engine that does not return to idle quickly enough can cause a loss of vehicle control, increasing the risk of a crash.

Corrective action

Dealers will update the control unit software, free of charge. Owner notification letters were mailed August 14, 2025. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0481.

Affected vehicles

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