Symptoms
- Window won't respond to the switch
- Other windows work normally
- No unusual sound, or a faint motor hum with no movement
- May have been intermittent before fully failing
Likely causes
- CommonFailing window motorA motor can fail gradually, working intermittently before stopping completely.
- CommonBroken or worn window regulatorCables or the scissor mechanism can wear out or snap, jamming the window in place.
- PossibleBlown fuseA blown fuse for that circuit stops the window from responding at all.
- PossibleFaulty window switchA worn switch can fail to send the down signal even though the motor itself is fine.
What to do
- Check the fuse for that window circuit first, since it's the easiest thing to rule out.
- Try both the individual door switch and the master switch, if your car has one, to isolate a bad switch.
- Listen for a motor sound when pressing the switch; a hum with no movement suggests a mechanical jam rather than an electrical failure.
- Avoid slamming or forcing the door if the window is up, since a partially detached mechanism can be made worse.
- Have a shop diagnose whether it's the switch, motor, or regulator, since the repair path differs for each.
- Get it fixed within a reasonable time since a stuck-up window isn't urgent, but it does mean you can't use that window for ventilation or emergency exit.
Tools and parts
- Fuse puller/tester
Window regulator with motorSearch: “window regulator motor for [year make model]”
Window switchSearch: “power window switch for [year make model]”
When to call a pro
A shop can quickly test whether the switch, motor, or regulator is at fault before ordering the right part.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.