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How to Replace the Key Battery for Mercedes A-Class

Model: Mercedes Classe A W169 - Years: 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
Part: Key

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Video tutorial

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 key. Once the metal key is removed, insert it into the remote's slot and press inside. When you hear a click, it means the cover is open.

Use a small screwdriver to extract the worn battery and take a new one of the same type, then replace it. Reattach the cover on your remote by pressing on the key case until you hear the locking click. Check the key's proper functioning.


Updated on 9 March 2026 by ScegliAuto


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

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.

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by ScegliAuto

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