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How to Replace the Remote Key Battery for the Mercedes A-Class?

Model: Mercedes Classe A W176 - Years: 2012, 2013, 2014, 2015, 2016, 2017, 2018
Part: Key

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Video tutorial

Does your car key no longer work? It is likely dead and needs a new battery. This guide will help you. First, extract the key from the remote shell by pressing the designated button, as shown.

Next, use the key itself to pry open the back of the shell, removing the plastic cover to access the battery. Finally, remove the battery from its slot and replace it, ensuring not to reverse the polarity.


Updated on 28 June 2026 by ScegliAuto


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    Frequently Asked Questions

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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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