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 Change the Key Fob Battery of a Mercedes B-Class

Model: Mercedes Classe B MK 1, W245 - Years: 2005, 2006, 2007, 2008, 2009, 2010, 2011
Part: Key

See other generations:
Video tutorial

How to change the key fob battery of a Mercedes B-Class? Follow these steps. Take your ignition key fob and extract the metal key (as shown in the video).

Once the metal key is removed, insert it into the plastic key fob space and press inside. When you hear a click, the cover is open.

Use a small screwdriver to remove the worn battery and take a new one of the same type to replace it. Refit the cover on your key fob by pressing on the key case until you hear the locking click. Check that the key functions correctly.


Updated on 11 March 2026 by ScegliAuto


Related tutorials

How to Change the Key Fob Battery on the Mercedes A-Class - B-Class
How to Change the Key Fob Battery on the Mercedes A-Class - B-Class
Mercedes Classe B (2005-2011 / MK 1, W245) .. the battery in the key fob for the Mercedes A-Class W169 and also the B-Class W245 (first series). First, take your key fob and remove the key by sliding.. …
How to Open the Mercedes Door with the Emergency Key
How to Open the Mercedes Door with the Emergency Key
Mercedes Classe B (2005-2011 / MK 1, W245) .. situation, to open the door of the Mercedes Class B, you can use the metal emergency key located inside the key fob. To carry out this operation,.. …
Replacing the Battery in the Mercedes B-Class
Mercedes Classe B (2005-2011 / MK 1, W245) .. Replacing the key battery in the Mercedes B-Class. Here’s how to change the remote battery. Take your ignition key and slide out the metal key. P.. …

How to Remove the Rear Seat of a Hyundai Tucson?

To remove the rear seat of a Hyundai Tucson, follow these steps. Start by moving the front seats to their most forward position to gain space. Next, locate the release lever on the underside of the rear seat, near the floor. Press this lever down while pulling the seat upwards to unlock it from the anchor pins. Once unlocked, tilt the seat upwards and forwards to remove it from its position. Repeat this process for both sides of the rear seat. Be careful of any electrical cables or components that may be connected to the seat during removal. Once the rear seat is removed, the disassembly is complete.

Watch the video!


by ScegliAuto

More videos