How to Replace the Battery in a Mercedes Remote Control?

[EzraRose]

Mercedes remote control battery replacement method is: 1. Push the toothed switch at the end of the remote control to the right to eject the manual key; 2. After pulling out the key, insert it into the hole at the back of the key slot, touch the latch of the remote control battery cover, and gently pry open the cover; 3. Press the battery lightly, remove the old battery, and replace it with a new one. Taking the 2021 Mercedes GLS as an example, it is a mid-to-large-sized car with body dimensions of: length 4988mm, width 1890mm, height 1424mm, and a wheelbase of 2939mm. The 2021 Mercedes GLS is equipped with a 1.5T turbocharged engine, delivering a maximum horsepower of 184PS, maximum torque of 280Nm, maximum power of 135kW, and is paired with a 9-speed automatic transmission.

[StMadison]

Changing the battery in a Mercedes car key is quite simple. Most models like the Mercedes C-Class or E-Class use CR2032 batteries. My key is for a Mercedes GLC, and there's a small slot on the back. Gently pry it open with a fingernail or a plastic pry tool, and the cover will come off. Be careful not to use too much force to avoid cracking it. Inside, there's a small battery—just take it out and replace it with a new one, ensuring the positive side faces up. Put the cover back on and press it firmly, then test the unlock/lock functions by pressing the key buttons. The battery typically lasts one to two years, so pay attention if the key starts responding slowly. I recommend buying branded batteries for better durability. The whole process takes just a few minutes, saving you the hassle and cost of visiting a dealership. Doing it yourself is safe and cost-effective, and keeping a spare battery doesn’t take up much space.

[McNorah]

I just replaced the battery in my Mercedes key, and the process was quite simple. There's a thin seam at the bottom of the key - use the edge of a bank card to pry it open. Remove the old CR2032 battery and replace it with a new one, making sure not to install it backwards. Snap the cover back into place securely. After replacement, remember to test the button functions like locking and unlocking. Mercedes key batteries typically last about two years, so replacing them early can prevent embarrassing situations. I've experienced the awkward moment of not being able to open the car door due to a dead battery, which is why regular checks are crucial. Using tools for assistance is recommended to avoid damaging the key. The battery models are usually CR2032 or CR2025, which can be easily purchased at supermarkets. The whole process saves both money and time.

[VincentDella]

I've replaced the battery in my Mercedes key a few times. The battery cover is very thin, so pry it open gently. Use a plastic tool instead of metal, install the CR2032 battery and test the buttons. When I first started, I broke the cover, but later I learned to do it steadily by watching videos. Replace the battery every two years to prevent malfunctions. The steps are simple, just be careful and dexterous.