How are Power Mirror Switch issues diagnosed?
When the power mirror will not do one or more functions on demand, the switch will likely be tested first. The switch can be diagnosed as faulty simply by testing for continuity across the switch when the switch is cycled through all of its possible settings. If pressing the switch does not create a continuous circuit,the switch will be proven failed.
How are Power Mirror Switches replaced?
Power mirror switches are often mounted on the driver's door or dash panel, so a piece of trim may need to be removed, and may have fasteners securing it in place. If the switch can simply be pulled out of the instrument panel or armrest, the switch can be replaced by disconnecting the old switch, connecting the new switch, and sliding the switch into place. If trim must be removed to access mounting hardware or remove the switch, installation generally requires the trim be pressed on or secured with very few fasteners.
RepairPal Recommendations for Power Mirror Switch issues
Checking your fuses first is always recommended when it comes to electronics. All too often an electrical component is replaced only to find it still does not function. This is because without a good fuse, the system will not receive power.
What to look out for when dealing with Power Mirror Switch issues
When replacing the power mirror switch, inspect for water damage behind the door panel through the opening where the power mirror switch was installed. If water damage was the cause, replacing the switch without resealing the door liner will lead to recurring failure. Also the connector should be cleaned with electrical parts cleaner before installation continues.