Tutorial for Replacing Battery in Old Mercedes-Benz R500L Key

[CarsonAnn]

Tutorial for replacing the battery in an old Mercedes-Benz R500L key is as follows: 1. Flip open the tab at the rear end of the key. 2. The mechanical key is located on the side of the key slot; press the internal gray button. 3. Push the rear end of the key upwards to create a gap, then remove the mechanical key. 4. Take out the rear end by hand to replace the battery. 5. After installing the new battery, reinsert the key holder to complete the battery replacement. Additional information about the Mercedes-Benz R500L key: 1. The lifespan of a Mercedes key battery is generally two years, while the original factory battery can last up to six years. 2. When the key battery is low, the Mercedes vehicle will provide two types of alerts: pressing the ignition switch will display a 'replace key battery' message on the dashboard; pressing the key's lock or unlock button will cause the indicator light on the key to dim or not light up.