Joflo96

Had this same issue, have replaced numerous sensors/thermostat and relays. It just happens intermittently and never throws a code for anything. Only “fix” is disconnecting the battery for about 30 seconds and reconnecting. It seems the trigger for the issue it a combination of the heater being on as well as it being engaged in the windshield function. Has anyone noticed a similar trigger because I’m not finding a real solution and the dealer can’t identify the issue either.