Mack Trucks, Inc.: Safety Recalls in 2025

Overheated brakes may cause a tire blowout or fire, increasing the risk of a crash.

Dealers will inspect and replace the brake chambers as necessary, free of charge. Interim letters notifying owners of the safety risk were mailed February 3, 2026. Additional letters will be sent once the final remedy is available, anticipated in February 23, 2026. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0491. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning December 22, 2025. Owners who received a remedy under Recall 15V804 (SC0398) must have the new remedy completed.

A loose or unsecured load lock bar can result in a loss of cargo, creating a road hazard and increasing the risk of a crash.

Dealers will replace the load lock clamps, free of charge. Owner notification letters were mailed December 18, 2026. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0489. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning November 27, 2025.

High beam headlights that do not switch to low beam as intended can reduce visibility for oncoming traffic, increasing the risk of a crash.

As an interim action, Mack will update the vehicle software through an over-the-air (OTA) update to disable the AHB feature, free of charge. The final remedy is under development. Interim owner notification letters were mailed January 7, 2026. Additional letters will be sent once the final remedy is available, anticipated June 1, 2026. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0488. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning November 27, 2025.

Safety systems that depend on the ECU (Automatic Traction Control, ABS, Electronic Stability Control, Active Cruise Control, and Collison Mitigation System) may have diminished or lost functionality, increasing the risk of a crash.

Dealers will reprogram the ECU software, free of charge. Owner notification letters are expected to be mailed December 15, 2025. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0490.

Loss of headlight illumination can reduce visibility, increasing the risk of a crash.

Dealers will replace the LED headlights, free of charge. Interim letters notifying owners of the safety risk were mailed December 17, 2025. Additional letters will be sent once the final remedy is available, anticipated on or before May 15. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0485. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning November 10, 2025.

An improperly welded seat belt anchorage bracket can detach during a crash, increasing the risk of injury.

Dealers will install a reinforcement plate, free of charge. Owner letters were mailed January 21, 2026. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0485. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning October 13, 2025.

Trailer tail lights and turn signals that do not illuminate as intended can reduce visibility to other drivers, increasing the risk of a crash.

Dealers will replace the trailer body input/output module, free of charge. Owner letters were mailed November 19, 2025. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0484.Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning September 25, 2025.

A loss of steering control increases the risk of a crash.

The oversteer guidance feature will be disabled through an over-the-air (OTA) update or by a dealer, free of charge. Owner notification letters were mailed August 21, 2025. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0483.

Reduced brake function can extend the distance required to stop, increasing the risk of a crash.

Dealers will replace the steer axle brake drums, free of charge. Owner notification letters were mailed August 27, 2025. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0482.

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

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.

An electrical short can cause an engine stall, increasing the risk of a crash. An electrical short can also cause the cables to overheat, increasing the risk of a fire.

Dealers will re-route the power cables, free of charge. Owner notification letters were mailed June 16, 2025. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0480.

Incorrect weight rating information on the door can result in overloading the axles, increasing the risk of a crash.

Dealers will replace the brake drums, free of charge. Owner notification letters were mailed June 16, 2025. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0472.

An incorrectly routed seat belt assembly may not restrain an occupant as intended, increasing the risk of injury in a crash.

Dealers will inspect and replace the seat belt assembly as necessary, free of charge. Owner notification letters were mailed June 3, 2025. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0478.

A detached idler gear can damage the engine, resulting in a stall and increasing the risk of a crash or injury.

Dealers will inspect and replace the turbo compound units as necessary, free of charge. Owner notification letters are expected to be mailed April 24, 2025. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0477.

A short circuit increases the risk of a fire.

Dealers will replace the batteries, free of charge. Owner notification letters were mailed April 24, 2025. Owner notification letters will be mailed on or before August 25, 2025, for the additional vehicles added on July 22, 2025. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0475.

Driving without a functioning anti-lock brake system may result in the trailer not braking as intended, increasing the risk of a crash.

Dealers will add an ABS warning light and circuitry, free of charge. Owner notification letters were mailed April 28, 2025. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0474.

Insufficient air volume can reduce braking performance and increase the risk of a crash.

Dealers will install the correct volume air tanks, free of charge. Owner notification letters were mailed February 10, 2025. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0473.