How to Replace the Key Battery for Mercedes-Maybach?

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Push the small switch on the remote to the right to manually release the key. After pulling out the key, gently insert it into the rear part of the keyhole, then open the cover. Below is relevant information: 1. Water Damage to the Key: If the remote key gets wet, avoid shaking it vigorously or pressing any buttons, as this can cause water to seep into other critical circuits. Also, do not attempt to unlock the car remotely immediately, as it may damage the circuit board. The correct approach is to open the key casing, lay it flat, and use a hairdryer to dry it before further inspection. 2. Remote Malfunction: The internal circuitry of the key is relatively fragile and can easily be damaged by strong impacts. Another common issue is water damage—if water seeps inside and damages the circuit, it may cause the remote to malfunction.