How to Replace the Battery in a New Mercedes-Benz A200 Key?

[ClaytonAnn]

First, push the marked switch upwards to remove the mechanical key, open the key casing, then pry out the old battery and replace it with a new one. Below are the detailed steps: 1. Before replacement, it's best to check the battery model for your car key, which is usually specified in the vehicle's user manual. Then, select a new key battery according to the specified model. 2. From the tail end of the key, push the marked switch upwards, and the hidden mechanical key will pop out slightly, allowing you to remove the mechanical key. Still at the tail end, use the just-removed mechanical key to press against the marked position, apply a slight force, and the key casing will open. 3. After opening the key casing, you'll see the battery positioned quite deep. Insert any tool into the gaps on both sides, gently pry, and the old battery can be removed. When installing the new battery, ensure the positive and negative poles are correctly aligned. Then proceed with the installation steps: first insert the top of the casing, then press firmly on the other end to complete the battery replacement. Finally, don't forget to reinsert the mechanical key.