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How to Replace the Battery in a Mercedes Class B Key Remote

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

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Video tutorial

How to replace the battery in a Mercedes Class B key remote? Take your remote and slide the button to release the metal key; Using a screwdriver, push the button inside. Apply pressure until the battery holder separates; remove the battery holder, replace the old battery with a new one of the same size and voltage using a screwdriver.

Refit the cover with the buttons by pressing on the key remote until you hear it click into place. Finally, insert the metal key back into the remote.

Check the remote's proper functioning.


Updated on 6 March 2026 by ScegliAuto


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How to reset the tyre pressure warning light on the Kia Niro EV?

To reset the tyre pressure warning light on the Kia Niro EV, inflate the tyres until they reach the correct pressure value. This value is indicated on the sticker attached to the driver's door pillar. Once the tyres are inflated, turn on the instrument cluster to check that the warning light has completely disappeared from the display. If it is still present, you may need to drive for a few miles to ensure it disappears completely from the screen.

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by ScegliAuto

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