What is the tutorial for replacing the battery in an old Mercedes CLK key?

[CharlotteDella]

The steps to replace the battery in an old Mercedes CLK key are as follows: 1. Flip open the tab at the rear end of the key to remove the mechanical key: Insert the mechanical key into the side slot of the key, press the internal gray button, and with the other hand, push the rear end of the key upward. When a gap opens, you can remove the mechanical key. 2. Then, manually remove the rear end: This allows you to replace the battery. 3. After installing the new battery: Reinsert the key holder, and the key battery replacement is complete. The lifespan of a Mercedes key battery is generally two years, while the original factory battery can last up to six years. When the key battery is depleted, the Mercedes vehicle will provide two types of alerts. The first is when you press the ignition switch, the dashboard will display a message to replace the key battery. The second is when you press the lock or unlock button on the key, the indicator light on the key will dim or fail to illuminate.