Vehicle recall 23V402000 · June 4, 2023
2019-2023 Mack Lrbe (electric)
The power cables that connect to the windscreen heater relay may have a loose connection and cause the relay to fail.
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 2019-2023 LR battery electric trucks. The power cables that connect to the windscreen heater relay may have a loose connection and cause the relay to fail.
- Consequence
- A relay that fails in the closed position will continue to power the cabin heater, overheating the relay and increasing the risk of a fire.
- Remedy
- Dealers will tighten the power cable to relay connection, free of charge. Owner notification letters are expected to be mailed August 4, 2023. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SCC0444.
- 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
- 23V402000
- Reported to NHTSA
- June 4, 2023
- Filed by
- Mack Trucks, Inc.
- Manufacturer campaign
- SC0444
- Owner notification
- June 23, 2023
- Vehicles potentially affected
- 47
- Initiated by
- the manufacturer
- Components
- Electrical system › Wiring › Relays/solenoids
Vehicles covered
As listed by NHTSA. A recall usually covers only some vehicles of each model and year, often a production date range.
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.