2003 Ford Expedition Power Folding Mirrors Not Working
The power folding mirrors on a 2003 Ford Expedition may not work due to a faulty wiring harness, a bad motor, or a broken mirror switch. To diagnose the problem, start by checking the wiring harness for damage. If the harness is damaged, it will need to be replaced. If the harness is not damaged, then the motor or switch may be faulty. To test the motor, disconnect the wiring harness from the motor and apply 12 volts to the motor terminals. If the motor does not turn, then it is faulty and will need to be replaced. To test the switch, disconnect the wiring harness from the switch and apply 12 volts to the switch terminals. If the switch does not turn on, then it is faulty and will need to be replaced.