NHTSA : 23V024000🔴 ⚠️ High severity

Campaign Details

Component: ELECTRICAL SYSTEM:WIRING:SWITCHES/KNOBS/BUTTONS

Defect Description

Mack Trucks, Inc. (Mack) is recalling certain 2019 and 2021-2023 LRBE battery electric trucks. The cabin heater relay may fail, causing the coolant heater to overheat.

Consequence / Hazard

A coolant heater that overheats can increase the risk of fire.

Proposed Solution

Dealers will update the software for the Hybrid Powertrain Control Unit and Instrument Cluster, and install replacement relays, free of charge. Owner notification letters were mailed March 16, 2023. Owners may contact Mack customer service at 1-800-866-1177. Mack's number for this recall is SC0440.

🚗 Affected Vehicles4

All the models below were recalled for this exact same problem.