How to Replace the Key Battery for the New Mercedes-Benz E270-CDI?

[DelDallas]

Here is the method to replace the key battery for the Mercedes-Benz E270-CDI: 1. Push the marked switch upwards to remove the mechanical key. 2. Open the key casing. From the rear end of the key, push the marked switch upwards, and the hidden mechanical key will pop out slightly, allowing you to remove it. 3. Pry out the old battery. After opening the key casing, insert a tool into the gap on either side and gently pry to remove the old battery. 4. Install the new battery. Here are some relevant details: 1. Before replacement, check the battery model of the car key and select a new key battery according to the specified model. 2. After installing the new battery, ensure the positive and negative terminals are correctly aligned. Then proceed with the installation steps: insert the top of the casing first, then press firmly on the other end to complete the battery replacement.