What is the tutorial for replacing the battery in an old Mercedes-Benz GLB key?

[DeSkylar]

Mercedes-Benz GLB key battery replacement tutorial is as follows: 1. Gently press the small switch on the back of the key to remove the mechanical key. 2. Press the key back cover opening button on the back of the key to remove the back cover. 3. The old battery is located on the left side of the key, and the battery compartment can be opened with a gentle push. 4. Remove the old battery and insert the new one, ensuring the "+" side faces up. 5. Reassemble the key in reverse order and test whether functions like the lock button work properly. 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 low, the Mercedes vehicle will provide two types of alerts: one is when pressing the ignition switch, the dashboard will display a message to replace the key battery. The second is when pressing the lock or unlock button on the key - if the indicator light on the key becomes dim or doesn't light up, it's time to replace the key battery.