Skip the auto shop - Our mechanics make house calls

How Does the Power Windows Anti-Pinch Safety Feature Work?

Anti-pinch Safety

Closing your power window is as easy as pressing or pulling on the window switch until your window reaches the top. It only takes a few seconds to close the window, but those few seconds take the driver’s concentration away from the road. It is becoming increasingly common for power windows to have an express-up function so the driver can press the power window button and the rest of the process is automatic.

The danger of the power window express-up feature is if there is an obstruction preventing the window from closing all the way. It can cause damage whether that obstruction is:

  • A child’s arm, head or toy
  • A chunk of ice or snow
  • A piece of dirt or a stone stuck in the window track

When the window reaches the obstruction, it can cause bodily harm or the window can shatter if the obstruction is hard. To add a safety device to the express-up feature, car makers use an anti-pinch device. The window motor has a pressure sensor that detects window motor movement when the glass has stopped moving, even minutely. If this occurs, the window reverses direction and moves downward.

The anti-pinch feature is controlled by a small module which is now often integrated into the power window switches on the driver’s door. If the vehicle loses battery power or the power windows require a repair, the power windows will not know their upper and lower limits. The window motor will need to be re-trained so it can learn the window travel limits.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

Post a question and get free advice from our certified mechanics.

ASK A QUESTION

More related articles

How to Buy Fuel Treatments
Adding a fuel additive to your gas tank when you fill up is one way to clean vital engine parts of deposits, improve the performance of your engine,...
How to Transfer a Car Title in Idaho
In order to prove ownership of a car, you must have the title. However, when a car is sold, given away or inherited, the title needs...
Veteran and Military Driver Laws and Benefits in New Mexico
The state of New Mexico offers a number of benefits and perks for those Americans who have either served in an Armed Forces branch...


Related questions

Q: How Does the Anti-Pinch Feature Work on My Power Windows?

Basically, anti-pinch works by measuring the amount of electrical current the motor uses that drives the glass up and down. Like practically everything on a modern car, the windows are controlled by an electronic control unit (ECU). When you operate...

Q: Does the right window switch harness on an 07 accord just pull off, or is there a clip of some kind?

Hey there, thanks for writing in about your 2007 Honda Accord. You need to lift up and detach the window switch cover and then disconnect the connector from the switch. The handle rod needs to be disconnected after the cover...

Q: How do you use the Lower Anchors and Tethers for Children (LATCH) system?

Your Altima is equipped with the Lower Anchors and Tethers for Children (LATCH) system. It’s designed to help make securing car seats (and your kids) simpler, while adding another layer of safety. Here’s how to use the system. Locate...