Wiring: relays/solenoidsRecall 23V-402 · 2019–2023 Mack Lrbe (electric)
Mack Trucks, Inc. recall 23V-402 covers 47 2019–2023 Mack Lrbe (electric) for a wiring: relays/solenoids problem, reported to NHTSA on June 4, 2023. The manufacturer's latest report (2025 Q1) shows 81% of affected vehicles repaired.
Source: NHTSA recall 23V402000 and manufacturer quarterly reports. Started by the manufacturer.
The problem
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.
The risk
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.
The fix
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.
Recall repairs are free. Confirm whether this recall is open on your vehicle by entering its VIN at nhtsa.gov/recalls.
How fast cars are being fixed
81%repaired
Share of affected vehicles repaired in each quarterly report the manufacturer filed with NHTSA.