Why does the car window go back down automatically after being rolled up?
2 Answers
When the car window rolls up and then automatically goes back down, it's the anti-pinch function at work. The window automatically descends when it encounters resistance. Here are the specific reasons why window resistance may increase: 1. Aging of the glass guide channel rubber strip: This leads to increased resistance when closing the window. 2. Glass position misalignment; deformation of the rubber sliding channel. Below is a partial introduction about one-touch window operation: 1. One-touch window operation refers to a system where the car window glass can be controlled to fully open or close with a single press of a button. 2. One-touch windows generally have an "anti-pinch" function to prevent potential hand injuries.
I've encountered the annoying issue of the window rolling halfway up and then automatically going back down several times, and there are quite a few reasons for this. The most common one is dust or small stones accumulating in the window track, which triggers the anti-pinch function to retract automatically to avoid pinching something. It could also be due to the window regulator motor overheating or aging, especially after frequent window operations. Poor contact in the control module or loose wiring can cause signal confusion, just like a malfunctioning switch. I recommend manually cleaning the window gap first and trying to restart the system by disconnecting the power to see if it returns to normal. If the problem persists, it might be due to aging parts, and you'll need to visit a professional shop for inspection and repair—otherwise, it’s really troublesome when you can’t close the window on a rainy day.
