Mack Trucks – Power Cables May Not Be Tightened Properly

Mack Trucks (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.


Report Received Date 06/04/2023
NHTSA ID 23V402000
Consequence Summary 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.
Corrective Action 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 Code SC0444
Potentially Affected 47
Fire Risk When Parked No
Do Not Drive No
Recall Link Go to Recall (https://www.nhtsa.gov/recalls?nhtsaId=23V402000)

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