Vehicle recall 23V024000 · January 23, 2023
2019, 2021-2023 Mack Lrbe (electric)
The cabin heater relay may fail, causing the coolant heater to overheat.
Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.
- Summary
- 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
- 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.
Recall details
- NHTSA campaign
- 23V024000
- Reported to NHTSA
- January 23, 2023
- Filed by
- Mack Trucks, Inc.
- Manufacturer campaign
- SC0440
- Owner notification
- March 16, 2023
- Vehicles potentially affected
- 43
- Initiated by
- the manufacturer
- Components
- Electrical system › Wiring › Switches/knobs/buttons
Vehicles covered
As listed by NHTSA. A recall usually covers only some vehicles of each model and year, often a production date range.
- Mack Lrbe (electric) (2019, 2021-2023): 2023, 2022, 2021, 2019
Has your Mack been repaired?
Recalls here come from NHTSA’s records for the model and year. Not every vehicle of a model is included in every recall, and this site can’t see whether a repair has been done. Only a VIN lookup can tell you that.
NHTSA’s VIN search doesn’t show recalls that were already repaired, recalls more than 15 years old, or some small manufacturers’ recalls. A Mack dealer can also check your VIN. Recall repairs are free.