Power windows and locks fail from worn switches, dying motors, failed relays or broken wires in the door jamb. Whether one window or all of them fail is the first clue to the cause.
Key takeaways
- One window usually means a switch or motor.
- All windows point to a fuse or relay.
- Door jamb wires break from flexing.
One versus all
If only one window fails, check its switch and motor. If all fail, check the fuse, relay or master switch.
Switches
Switches wear with use, and the driver's master switch gets the most use.
Motors and regulators
A motor can fail or the regulator can break. A grinding sound suggests the regulator.
Wiring in the door jamb
Wires flex each time the door opens and eventually break, causing intermittent faults.
Locks
Lock actuators fail the same way. A lock that works only sometimes may have a wiring problem.
Switch, motor or wiring
When a window does not move, listen for the motor when you press the switch. A click or hum with no movement suggests a bad regulator or a stuck window. Silence suggests a switch, fuse, relay or wiring fault. Testing for power at the motor tells which side of the circuit has failed. This avoids replacing a motor that was fine.
Safety and weather
A window that will not close leaves the car open to rain and theft, and a window that will not open is a problem at a drive-through or border. If a window is stuck down, a temporary cover protects the interior until repair. Because Bakersfield has hot, dry summers, a stuck window also matters for cabin heat. Have electrical window faults fixed before the next heat wave.
Need help in south Bakersfield?
Questions about auto electrical repair? Read our Auto Electrical Repair page, call (661) 599-9098 or request a time. Peña's Auto Electric, Smog & Repair, 303 Taft Hwy, Suite B, Bakersfield, CA 93307. Mon to Fri 9:30 AM to 5:30 PM, Sat 8 AM to 1 PM.
Frequently asked questions
Why do all windows fail at once?
A fuse or relay.
Can a window be stuck open?
Yes. Cover it and call.
Is it expensive?
Depends on the part.
Do you fix locks?
Yes.