CarRecallWatch- Component
- SERVICE BRAKES, AIR:ANTILOCK:CONTROL UNIT/MODULE
- Problem
- Mack Trucks, Inc. (Mack) is recalling certain 2025-2027 Pioneer (4) and 2026-2027 Anthem (4) vehicles. The rear brake modulators may have unprotected electrical connectors that can short circuit and lead to a loss of the anti-lock brake system (ABS) and electronic stability control (ESC).
- Risk
- A loss of anti-lock brakes and electronic stability control increases the risk of a crash or injury.
- Remedy
- Dealers will inspect the rear brake modulator electrical connectors, install a protective cover, and replace the rear brake modulators, as necessary, free of charge. Owner notification letters were mailed June 8, 2026. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0494. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning April 30, 2026.
What this recall means for you
Certain heavy trucks may have unprotected electrical connectors on the rear brake modulators. These connectors can short circuit, causing a loss of the anti-lock brake system (ABS) and electronic stability control (ESC).
Losing anti-lock brakes and electronic stability control increases the risk of a crash or injury, particularly in situations that require controlled braking or stability correction. Owners should not wait to have the issue addressed.
Dealers will inspect the rear brake modulator electrical connectors, install a protective cover, and replace the rear brake modulators as necessary, all free of charge. Owner notification letters were mailed June 8, 2026, and you can contact Mack customer service at 1-800-866-1177 (recall SC0494). Affected VINs will be searchable on NHTSA.gov beginning April 30, 2026, so check your VIN for open recalls.
Check whether this recall is open on your vehicle
Official recall notice
Affected vehicles
| Mack Anthem AN (4) | 20262027 |
|---|---|
| Mack Pioneer PR (4) | 202520262027 |