BMW power windows are known to be somewhat of an Achilles’ heel, at least for some models and model years.
The series of components and processes that ensure the reliable operation of power windows has many potential vulnerabilities. However, in most cases, the problem can be traced to a failure in the regulator.
Common BMW Power Window Issues
BMW window systems can fail suddenly, but more often you will have some warning in the form of windows sticking or struggling to go up or down. You may also hear a crunching sound when you raise or lower the window.
These issues may be the result of a relay, blown fuse, failed switch or the glass coming off its track. However, in our experience, the most common reasons for power window failure in BMWs is a bad regulator.
What to Do if Your BMW Windows Fail
Unfortunately, your windows are more likely to become stuck in the open (down) position. This leaves your auto vulnerable to the elements, both natural and criminal.
If the problem is related to the switch, you’re in luck. BMWs have a trick to closing the power windows in an emergency, as long as they have a one-touch open/close functionality. Insert your key into the driver’s door lock, turn it to the right and hold it there for about 10 seconds. As long as you have battery power, your windows should close.
The next step is getting your vehicle to your local BMW repair shop, where it will be safe and protected until the problem is resolved.
Repairing Your BMW Power Windows
We start by troubleshooting all the systems, from switches to fuses, relays and motors. In most cases, the problem relates to BMW’s window regulators. This component is essentially a cable system that drives the windows up and down when activated. A small metal cylinder attaches to the cable with a plastic clip.
This cylinder is what pushes and holds the glass up. Unfortunately, the plastic clip is prone to failing. When you hear a grinding or crackling noise, it’s typically a broken plastic clip. And, of course, this simple little part is buried deep inside the door.
You can repair the window regulator yourself, but if you choose to do so, exercise caution. Accessing it involves removing most of the components inside the door, including the airbag. If you aren’t extremely careful, you could accidentally release the airbag. Not only will this void your warranty, but it can also cause serious damage and injury.
If you have a problem with your windows — or any other component of your car — seek out a locally owned and operated BMW repair shop. In Salt Lake City, Wasatch Motor Werks specializes in BMW repair and maintenance for your fine automobile. With more than 25 years of experience, we are committed to providing high-quality service at the lowest possible cost. Call or stop by today for assistance with your BMW power window problems.