How to Replace the Battery in a Mercedes-Benz CL600 Key?

[LaAnastasia]

Here are the steps to replace the battery in a Mercedes-Benz CL600 key: 1. Identify the battery model for the car key, which can be found in the vehicle's user manual, and select a new key battery according to the specified model. 2. From the tail end of the key, push up the marked switch to release the hidden mechanical key, then remove it. 3. Use the removed mechanical key to press against the marked position with force to open the key casing. 4. After opening the casing, you will find the battery located deep inside; insert a sharp object into the gaps on both sides to remove the old battery. 5. Install the new battery, ensuring the positive and negative poles are correctly aligned. Insert the top end of the casing first, then press firmly on the other end to complete the battery replacement. 6. After replacement, reinsert the mechanical key back into place.

[Caroline]

Replacing the battery in a Mercedes CL600 key is actually quite simple. First, check your smart key—there's usually a small slot or release button on the back. Use a thin coin or small knife to gently pry open the casing, but don’t apply too much force to avoid damaging the plastic parts. Remove the old battery, which is most likely a CR2032 coin cell (double-check the model to avoid buying the wrong one). When inserting the new battery, pay attention to the orientation: the side with the '+' sign should face upward. After installation, don’t rush to close the cover—test the key buttons first to see if they unlock the car or light up properly. If everything works, snap the cover back into place. We recommend buying Panasonic or Sony batteries for better quality and longer lifespan. Avoid dropping the key or exposing it to water to extend battery life. Doing it yourself can save you tens of dollars in labor costs, making it a cost-effective choice. Just take it step by step, and it’s hassle-free.