Mack Trucks, Inc.: Electrical System › Wiring › Switches/Knobs/Buttons
Mack Trucks, Inc. reported this defect to federal regulators on Jan 23, 2023 and put the number of vehicles at risk at 43. The repair is free for as long as the recall stands.
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.
4 model years covered
Newest first| Vehicle | Complaints | Recalls | Fires | Crashes |
|---|---|---|---|---|
| 2023 Mack Lrbe (electric) | 0 | 5 | 0 | 0 |
| 2022 Mack Lrbe (electric) | 0 | 5 | 0 | 0 |
| 2021 Mack Lrbe (electric) | 0 | 2 | 0 | 0 |
| 2019 Mack Lrbe (electric) | 0 | 2 | 0 | 0 |
What this page is, and what to do next
A recall is not an opinion. It is a Part 573 report a manufacturer is required by federal law to file once it decides a defect poses an unreasonable risk to safety, and it commits them to repairing the vehicle at no cost to the owner. The three passages above are the manufacturer’s own wording as published by NHTSA.
This page describes the campaign. It cannot tell you whether one particular car has already been through the shop — that is tracked by VIN, and only the manufacturer knows it. Check yours at nhtsa.gov/recalls or with a franchised dealer, quoting campaign number 23V024000.
Full record for the 2023 Mack Lrbe (electric) → · Recalls carrying a do-not-drive advisory → · Where this data comes from →