RecallPulseUpdated Oct 9, 2026

2019–2023 Mack Lrbe (electric): Electrical System recall

NHTSA campaign 23V024000 · 43 units potentially affected · filed Jan 23, 2023

What's wrong

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.

Why it matters

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

The fix

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.

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
Manufacturer no.
SC0440
Manufacturer
Mack Trucks, Inc.
Component
ELECTRICAL SYSTEM:WIRING:SWITCHES/KNOBS/BUTTONS
Units affected
43
Report received
Jan 23, 2023
Owner letters
Mar 16, 2023
Type
Vehicle

Check whether your vehicle is included with the official NHTSA VIN lookup or your dealer. Repairs for safety recalls are free.

Vehicles covered