If you’ve got a power window on your car that’s stuck you don’t have to drive over to a garage. You can fix your stuck power window on your own in an afternoon. Here’s how to do it in three practical steps.
- When one of your power windows is stuck, the first thing to check is the fuse.
- If it’s good, the problem is either a bad switch or motor or a broken regulator (the device that actually lifts and lowers the glass).
- For this job you’ll need a voltmeter, a basic set of metric sockets, screwdrivers, a drill and most important, a subscription to an online service manual.
- This sort of subscription allows you to download instructions and diagrams that are specific to your car.
- The instructions in this article are good as a rough guide, but you should refer to a manual for your particular make of car for specifics.
1. Remove the trim
- First, remove all the trim panel fasteners to access the switch for testing.
- Remove the trim panel and peel off the vapour barrier.
- A trim panel removal tool is cheap (about $5 at auto parts stores) and saves you a lot of time.
2. Test with your voltmeter
- Reach into the door panel and disconnect the power connector to the window motor (wear leather gloves to protect against cuts).
- Connect the leads of your voltmeter to the two terminals on the connector.
- Turn the key to the “on” position and toggle the window switch up and down.
- If the switch is good, you’ll see the voltage reading change from plus 12 volts to minus 12 volts.
- That means the problem is the motor/regulator.
- If your meter doesn’t display those readings, you’ve got a bad switch or a broken power or ground wire.
- Download an electrical diagram and check the power and ground wires leading to the switch to isolate the problem.
3. Replace the old regulator
- If you need to remove the window’s regulator, you first need to remove the glass.
- Tilt the glass away from the door and lift it out to remove it.
- Next, remove the regulator bolts or rivets.
- Drill these bolts out and snake the old regulator out through one of the door panel openings.
- Reverse that procedure to install the new regulator.
- Bolt the new regulator in place and then reinstall the motor and window switch electrical connectors and the window glass.
- Test the window for proper operation.
- If the glass binds, you may have to loosen the bolts and make minor adjustments to the regulator.
- Then tighten everything and replace the vapour barrier and trim panel.
Keep this helpful how to in mind next time you have to fix a stuck power window to have an easier time getting the job done.