Skip the auto shop - Our mechanics make house calls

Q: Power window failure

asked by on

My quarter window recently stopped working. for a while it had been kind of hesitant and seemed to be trying too hard to go up. now it doesn't move at all. I replaced the window motor just now, but have not assembled the window back together because I noticed when I press the button for the window, the motor does nothing. does this mean I have faulty wiring somewhere? or does the motor have to be connected to the apparatus in order for it to be functional?
My car has an automatic transmission.

When a window moves slowly, 99 out of 100 times the window motor is the correct repair. It is possible something else was wrong altogether though. Before you begin another round of diagnosis, make sure the window lock switch on the driver’s door hasn’t been engaged, check all your fuses. All the fuses, not just the fuse for the windows. Usually, it will suffice to check all the fuses on the fuse block under the dash and the main one under the hood. If none of this results in an answer, you will need a test light to see if the master switch is sending power to the motor. Do all the other windows work?

If all of this fails, you could have a wiring problem. If you suspect this, test the master window switch a test light at the master switch. This bypasses all the wiring going to the window motor. If you have power and ground issues at the master window switch, I would be inspecting the section of wiring harness that passes through the door jamb of the driver’s door.

If you decide you need help, I recommend getting some help from a qualified technician, such as one from YourMechanic, to diagnose your window that’s moving slowly.

Good luck!

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: SUV rollback - 2015 Buick Encore Automatic

One alternative for the "hill rollback" problem would be to hold the brake pedal with your left foot, use your right foot to press the accelerator, then release the brake as the vehicle moves forward. The visibility issue is a...

Q: Relay for engine management doesn't work unless the magnetized plate is pushed in. Please help!

Generally speaking, there are two separate circuits inside of a relay. One circuit is, what I'll refer to for the sake of this writing, as the "supply" side, and the other is the "signal" side. The supply side has a...

Q: Evaporative Emission Control System Purge Control Valve Circuit Malfunction how to fix and where is it ?

Hi there. The best advice I can offer is for you to complete one of two things. First, it would probably be best to have a professional mobile mechanic come to your location and complete a check engine light inspection...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.