the drivers side mirror defogger is not working the rear windows works and passenger side works what could be the problem this is a 2013 Honda civic
This is a common problem with heated mirrors and window defrosters. Inside the glass is a small heating element that heats up using electrical current and is usually on a timer. When this electrical heating element fails or does not have the proper amount of electricity flowing to it, this may cause it not work work properly. I would recommend having an expert from YourMechanic come to your location to diagnose and repair your heated mirror.