There can be several reasons of a dysfunctional power mirror switch. It’s most common cause is a bad power window's motor. Other reasons include faulty switch, worn out regulator or the cable can be off of one of the pulleys. Considering the excessive use of power windows these switches burn out rapidly. According to a recent survey, majority of auto technicians have accepted that they fix hundreds of power mirror each year. These windows are now available in all latest makes and models and are operated through special switches. Let’s learn more about the working of these switches below.