What is the reason why the Mercedes-Benz key does not close the windows when held down?
2 Answers
The reason why the Mercedes-Benz key does not close the windows when held down is that the one-touch window function has failed and needs to be reinitialized. The specific method is as follows: 1. Buttons to press: Press the one-touch window button 6 times, releasing it each time, and on the 6th press, release it, and the window will automatically rise; lift the four window buttons upwards; the first time you lift the button, release it when the window reaches the top; the second time you lift the button, do not release it; 2. Finally, release the button: the window will automatically descend, and the reset is complete. Introduction to Mercedes-Benz: Taking the Mercedes-Benz C-Class 2021 C200L Dynamic Sport Edition as an example: The manufacturer of this car is Beijing Benz, the level is a mid-size car, and the energy type is gasoline.
My Mercedes also had the issue where the windows wouldn't close by holding the key fob button. I later found out this is usually due to low battery in the key fob causing weak signal transmission, or the window system's memory function not being properly set up (one-touch operation not activated). It could also be a faulty window motor or control module, like when the module software needs updating. I recommend first checking the key fob's battery level by shining a phone light to see if the indicator is dim, then try replacing the battery while holding the key fob button for several seconds to reset the function. If that doesn't work, visit a professional workshop for diagnostic equipment to check wiring or reprogramming. This issue is very common - it affects daily convenience and may create vehicle security vulnerabilities. Don't ignore small problems - I delayed repairs last time and ended up spending more money and time. Fix it promptly.
