What is the reason why the driver's window of the Volkswagen Tharu sometimes cannot be opened?
2 Answers
The reason why the driver's window of the Volkswagen Tharu sometimes cannot be opened may be due to loose screws fixing the window regulator or deviation in the installation position of the guide rail. The specific causes and solutions are as follows: Loose screws fixing the window regulator: If the window occasionally cannot be opened or there is abnormal noise from the glass when opening the window, it may be due to loose screws of the window regulator. The solution is to tighten the screws of the window regulator. Deviation in the installation position of the guide rail: If only the driver's window sometimes cannot be opened while other windows are fine, and after ruling out issues with the relay or fuse, it may be due to deviation in the installation position of the guide rail. The solution is to take the car to a repair shop as soon as possible.
When encountering the occasional malfunction of the Touareg's driver-side window, as someone with over a decade of repair experience, I've seen it all—most issues stem from the window regulator system. Poor contact in the switch button is the most common culprit; in Volkswagens, the metal tabs inside the buttons tend to oxidize over time—just disassemble and clean the contacts. It could also be worn carbon brushes in the regulator motor, causing insufficient rotation force. I recommend first listening for a humming sound when pressing the button. If there’s no sound at all, there’s a 90% chance it’s a blown fuse in the steering wheel’s fuse box. This issue is especially common in summer when the window track seals warp from heat and jam the glass. DIY repairs require a T20 screwdriver, and you must be careful with the door panel clips—I once saw an owner snap the plastic bracket by forcing it. The easiest solution is to visit a dealership for a computer scan—they can check the regulator’s travel data, which beats guessing any day.
