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

Replacing the Key/Remote Battery for the Mercedes-Benz B-Class

Model: Mercedes Classe B MK 2, W246 - Years: 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
Part: Key

See other generations:
Video tutorial

As usual, replacing the battery in the key/remote for the Mercedes-Benz B-Class (as with any car key) is a relatively simple task. Here’s how to proceed.

Start by removing the actual metal key from its housing by pressing the small release and simultaneously pulling the key out. At this point, use a flathead screwdriver to unlock the mechanism holding the cover (the one without the manufacturer's emblem) of the key/remote in place to gain access to the battery.

Replace it with a new one and reassemble everything.

This procedure applies to the key/remote of all Mercedes vehicles.


Updated on 21 March 2026 by ScegliAuto


Related tutorials

Replacing the Key Battery in a Mercedes B-Class
Replacing the Key Battery in a Mercedes B-Class
Mercedes Classe B (2019-2026 / MK 3, W247) …
Replacing the Battery in the Mercedes B-Class
Mercedes Classe B (2005-2011 / MK 1, W245) …
How to Replace the Key Battery in the Mercedes-Benz B-Class W246
How to Replace the Key Battery in the Mercedes-Benz B-Class W246
Mercedes Classe B (2011-2019 / MK 2, W246) …

How to Reset the Tire Pressure Light on a MG ZS?

On the instrument cluster of the MG ZS, the tire pressure light that appears can be reset by inflating the tires to the correct pressure: this value will be indicated on the sticker attached to the driver's door pillar. Once the tires have been properly inflated, you can turn on the instrument cluster and navigate through the menu until you find the option that indicates tire pressure: if this screen shows the new values, the light will turn off; otherwise, you will need to drive for a few miles so that the sensors can read the new values and turn off the light afterward.

Watch the video!


by ScegliAuto

More videos