Ford will be contacting the owners of certain 2021-2022 Mustang Mach E vehicles because the high voltage battery in their cars may overheat. The problem may lead to loss of power and could increase the chance of an accident.

Ford’s Critical Concern Review Group first became aware of the problem in April 2022, after hearing of an issue pertaining to the high voltage battery main contactor overheating in a Mustang Mach E. A review of warranty reports found approximately 286 warranty claims where the problem was an open or welded battery contactor. According to the defect report, it is possible that the high voltage battery main contactors may overheat, which can result in an open contactor or a welded condition.

Contactors that are welded shut while driving, will result in an illuminated powertrain malfunction warning light on the next drive cycle, along with a no-start condition.

Contactors that become open while driving, will result in a powertrain malfunction warning light, the vehicle will display “Stop Safely Now” on the instrument panel, and the vehicle will lose power.

In both cases, all 12V systems including power brakes and steering will remain functional.

Ford will correct the problem by installing a Secondary On-Board Diagnostic Control Module (SOBDMC) and updating the Battery Energy Control Module (BECM) software. Ford is expected to begin Over-The-Air (OTA) updates for the SOBDMC and BECM software in July 2022. Owners will also have the option to take their vehicle to a Ford or Lincoln dealer to have the software update completed.

The updated SOBDMC software (LJ98-14G069-AXG, LJ98-14G069-AZG, LJ98-14G069-BBG, LJ98-14G069-BDG) will monitor contactor temperature and intelligently reduce battery power to prevent damage to the contactor. The updated BECM software (NJ98-14C197-AE, NJ98-14C197-BD) will monitor contactor resistance to identify an overheated contactor and reduce vehicle power to prevent further damage.

Ford’s number for this recall is 22S41 and the NHTSA campaign number is 22V-412.

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