Do it yourself
Frequently asked questions about cars and motorcycles
Car tutorial (Do it yourself) Motorcycle tutorial (Do it yourself) Frequently Asked Questions

How to Replace the Key Battery in a Mercedes-Benz A-Class W177

Model: Mercedes Classe A W177 - Years 2018-2026
Part: Key

If the key for your new Mercedes-Benz A-Class W177 has suddenly stopped working, you need to replace the button cell battery inside. This is a simple task that anyone can do independently. First, press the small button located at the bottom of the rear cover and remove it. Next, slide out the battery holder from the side and remove the old battery. Replace it with a new, compatible model and properly reattach the rear cover. The replacement is complete.

Updated on 13 May 2026 by ScegliAuto

Video tutorial

Related tutorials

How to Change the Key Fob Battery on the Mercedes A-Class W177
How to Change the Key Fob Battery on the Mercedes A-Class W177
Mercedes Classe A (2018-2026 / W177) .. the battery in the key fob for the Mercedes A-Class W177, as well as the B-Class and vehicles from this manufacturer from 2018 onwards. First, take.. …
How do you disassemble the rear taillight of the Mercedes A-Class w177?
How do you disassemble the rear taillight of the Mercedes A-Class w177?
Mercedes Classe A (2018-2026 / W177) The disassembly of the rear light of the Mercedes Classe A w177, a car that can be seen in the video uploaded here, generally follows the operating s…
Replacing Diesel Filter on Mercedes A-Class W177
Replacing Diesel Filter on Mercedes A-Class W177
Mercedes Classe A (2018-2026 / W177) .. and replace the diesel filter on a Mercedes A-Class W177. First, lift the vehicle and use a wrench to remove the screws from the indicated aluminum.. …

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