How to Replace the Battery in an Older Model Mercedes-Benz E200 Supercharged Version Key?

[DeSteven]

Steps to replace the battery in an older model Mercedes-Benz E200 supercharged version key are as follows: 1. Flip open the tab at the rear end of the key to remove the mechanical key. 2. Insert the mechanical key into the side slot of the key and press the internal gray button. 3. With the other hand, push the rear end of the key upward; when a gap opens, remove the mechanical key. 4. Then manually take out the rear end to proceed with battery replacement. 5. After installing the new battery, reinsert the key bracket to complete the key battery replacement. Notes: 1. The lifespan of a Mercedes-Benz key battery is generally two years, while the original factory battery can last up to six years. 2. When the key battery is depleted, the Mercedes-Benz vehicle will provide two types of alerts: one is pressing the ignition switch, where the dashboard will display a message to replace the key battery; the second is pressing the lock or unlock button on the key. If the indicator light on the key dims or does not light up, it indicates that the key battery needs replacement.