How to Replace the Key Battery for the New Mercedes-Benz GL550?

[LaPenelope]

First, push up the logo switch to remove the mechanical key, then open the key casing, pry out the old battery, and replace it with a new one. Below is an introduction to replacing the car key battery: 1. Before replacement, check the battery model of the 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 of the key, push up the logo switch; the hidden mechanical key will pop out slightly, allowing you to remove it. Still at the key's tail, use the mechanical key you just removed to press against the logo position, apply slight force, and the key casing will open. 3. After opening the key casing, you will see the battery positioned quite deep. Insert any tool into the gap on either side, gently pry, and the old battery can be removed. When installing the new battery, ensure the positive and negative poles are not reversed. 4. 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.