Why Doesn't the Mercedes Key Lock Button Raise the Windows When Held Down?

[CarsonRose]

The reasons why the Mercedes key lock button does not raise the windows when held down are as follows: 1. The windows have not been initialized; 2. The one-touch window lift function is malfunctioning. Here is some relevant information about Mercedes-Benz cars: 1. In terms of power: The SLK roadster, which excels both inside and out, is equipped with a 4-cylinder 2.3-liter large turbocharged engine, with a maximum output of 193 horsepower. It consumes 8.2 liters of fuel per 100 kilometers, accelerates from 0 to 100 km/h in just 6 seconds, and has a top speed of 237 km/h. 2. In terms of features: The SLK is also equipped with a 5-speed electronically controlled automatic transmission, which can measure the driver's agility in using the accelerator and determine gear shifts and responses based on changes in speed, engine load, cruise control conditions, and engine temperature.

[JasperAnn]

My Mercedes key doesn't roll up the windows when I hold down the lock button, which is quite common. I think it's mainly a function setting issue. The long-press function of Mercedes keys needs to be activated or reprogrammed. If it's a new car or the key was replaced, it might not be enabled by default. It could also be that the key battery is low; below normal levels, it can't send complete signals, so you should check the battery status. If all these are fine, the car's anti-pinch system might have triggered a safety mode, preventing the windows from rolling up, or there might be a module malfunction requiring a reset. The first step I recommend is trying to reprogram the key: sit in the car, close all doors and windows, and hold the lock button for more than 10 seconds—sometimes this can restore normal function. If that doesn't work, take it to a professional shop; don't delay too long as it might affect your use of the car. During regular maintenance, remind the technician to test the key functions to prevent future issues.

[PenelopeMarie]

I usually drive my family out and have the habit of holding down the lock button to close the windows, but sometimes the Mercedes key fails, and the windows don't move, which is really annoying. There could be several reasons, such as the key being old with a weakened battery—if the signal is weak, it can't control the windows, so trying a new battery might solve the problem. Or, the vehicle's personalized settings might have been accidentally turned off; just find the window settings in the car's menu and turn them back on. Another factor could be foreign objects stuck in the sunroof or windows—when the automatic anti-pinch function is triggered, the system disables the one-touch window lift, so you'll need to clean and check it. Safety first—if the sunroof isn't closed and water gets in during rain, it would be a disaster, so if you notice an issue, don't drive but go to a professional shop for diagnosis. As a user, test the functions every time you use the car to ensure reliability.

[VanMaverick]

The inability to raise the windows by long-pressing the lock button on a Mercedes key is generally caused by several common reasons: depleted key battery affecting signal transmission, requiring replacement; function not activated, needing to be enabled via the vehicle's system settings; faulty anti-pinch module triggering the safety mechanism; or the vehicle's control unit requiring reprogramming or reset. Simple steps include first checking the key battery's charge. If normal, reprogram the key by pressing and holding the lock button inside the car for more than 10 seconds. If the issue persists, visit an authorized service center to quickly diagnose and fix the problem using diagnostic tools to read fault codes. Avoid handling it yourself to prevent damage from incorrect operations.