Mack Lrbe (Electric): Electrical system — relays/solenoids

Affects Mack Lrbe (Electric) · 2019–2023 — about 47 vehicles.

The hazard

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.

What to do

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.

Critical — crash/injury risk now High — injury risk; see remedy Moderate — fix at next service Low — minor / informational