CarRecallWatch- Component
- ELECTRICAL SYSTEM:WIRING:SWITCHES/KNOBS/BUTTONS
- Problem
- 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.
- Risk
- A coolant heater that overheats can increase the risk of fire.
- 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.
- Notes
- Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.
What this recall means for you
A cabin heater relay in these electric trucks may fail, which can cause the coolant heater to overheat. An overheating coolant heater increases the risk of a fire.
To fix the problem, an authorized dealer will update the software for the Hybrid Powertrain Control Unit and Instrument Cluster and install replacement relays. The repair is free of charge. Owner notification letters were mailed March 16, 2023. If you have questions, you can contact Mack customer service at 1-800-866-1177 and reference recall number SC0440.
Whether or not you have received a letter, check your vehicle identification number (VIN) for open recalls and schedule the free repair with an authorized Mack dealer as soon as possible.
Check whether this recall is open on your vehicle
Official recall notice
Affected vehicles
| Mack Lrbe (Electric) | 2019202120222023 |
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