Do it yourself
Frequently asked questions about cars and motorcycles

How to Replace the Battery in Mercedes Remote Key

Model: Mercedes Classe A W176 - Years 2012-2018
Part: Key

Replacing the battery in the remote key is the same for many Mercedes-Benz models and requires no tools. Start by locating the plastic lever on the back edge of the remote that holds the mechanical key in place. Slide the lever to the side and remove the key from its slot. Use the tip of the key to release the tab that secures the battery cover: right above the lever is a slot where you can insert the tip of the key to press and release the tab. Once the cover is removed, take out the battery (2025) and insert the new one, ensuring the polarity is correct. Then, reapply the cover and insert the key back into its slot.

Updated on 19 February 2026 by ScegliAuto

Video tutorial

Related tutorials

Mercedes Classe A (2004-2012 / W169) Let's see how to replace the battery in the Mercedes A-Class remote. Take your remote and slide the button to release the metal key; use a screwdrive…
Mercedes Classe A (2004-2012 / W169) The following procedure will allow us to disassemble and replace the battery of the remote control key for the Mercedes Class A. First, we take our r…
Mercedes Classe A (2004-2012 / W169) How do you replace the battery in the remote key for your Mercedes A-Class? Let's see how to do it. Take your ignition remote and pull out the metal …

Other guides you may be interested in

    Frequently Asked Questions

    • Classe A 2012-2018 - Why is my Mercedes A-Class W176 key not recognized? Read answer

How to Open a Stuck Boot on the Peugeot 407?

On the Peugeot 407, the boot may become stuck, possibly due to a problem with the control button or the lock actuator. In such cases, you can perform an emergency opening by following the simple procedure shown in this tutorial. First, open the rear doors, then lower the seat back by operating the release lever. Next, go inside the boot, locate the lock, and manually operate it using a flathead screwdriver. The boot will then be free to open.

Watch the video!


by ScegliAuto

More videos