On certain vehicles, a software problem could cause the heating, ventilation and air conditioning (HVAC) system to enter a failsafe mode. As a result, the heater could stop working. If this happens, the windshield defroster may not work properly.
Safety Risk
A windshield defroster that doesn't work properly could cause reduced visibility and increase the risk of a crash.
Corrective Actions
The company will notify owners by mail and advise you to take your vehicle to a dealership to update the HVAC system electronic control unit software. The dealer will also inspect and, if necessary, replace the electrical compressor.