How to Open and Replace the Battery in a Mercedes Car Key?

[CaydenRose]

Mercedes car key battery replacement method is as follows: 1. Select a new button battery that meets the specified model specifications. 2. Push the switch upwards from the tail of the key to eject the mechanical key, then remove the mechanical key. 3. Use the extracted mechanical key to press against the notch, apply force to pry open the key casing, and then proceed with battery installation. Precautions are as follows: 1. Avoid rough handling or dropping. The internal circuitry of the key has weak impact resistance and is prone to damage from severe collisions. 2. If the remote key gets wet, it may burn out the internal circuitry, leading to malfunction.