The defect
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.
The risk
A coolant heater that overheats can increase the risk of fire.
The remedy
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.
NHTSA's own wording · initiated by MFR
Vehicles covered
| Model | Model years |
|---|---|
| Mack Lrbe (electric) | 2019, 2021, 2022, 2023 |
Components: ELECTRICAL SYSTEM:WIRING:SWITCHES/KNOBS/BUTTONS
Model years in this recall
NHTSA complaints and the number of recall campaigns for each model year this recall covers.
| Model | Year | Complaints | Recalls |
|---|---|---|---|
| Mack Lrbe (electric) | 2019 | 0 | 2 |
| Mack Lrbe (electric) | 2021 | 0 | 2 |
| Mack Lrbe (electric) | 2022 | 0 | 5 |
| Mack Lrbe (electric) | 2023 | 0 | 5 |
Other electrical system recalls in 2023
178 of the 894 recall campaigns reported to NHTSA in 2023 concerned the electrical system; Mack Trucks, Inc. filed 118 campaigns in all.
| 23V904000 29 Dec 2023 | Cake 0 Emission USA Inc |
| 23V901000 26 Dec 2023 | Hyundai Motor America |
| 23V888000 22 Dec 2023 | Prevost Car (US) Inc. |
| 23V894000 22 Dec 2023 | Rosenbauer America |
| 23V879000 21 Dec 2023 | Daimler Trucks North America, LLC |
| 23V873000 21 Dec 2023 | REV Ambulance Group Orlando, Inc. |
| 23V867000 20 Dec 2023 | Volkswagen Group of America, Inc. |
| 23V864000 20 Dec 2023 | Toyota Motor Engineering & Manufacturing |
NHTSA recalls (public domain) · all recalls of 2023