Tutorial for Replacing the Battery in an Older Mercedes-Benz R350-4MATIC Key

[DiAlex]

Here is the tutorial for replacing the battery in an older Mercedes-Benz R350-4MATIC key: 1. First, flip open the tab at the back of the key to remove the mechanical key. Insert the mechanical key into the side slot of the key, press the internal gray button, and with the other hand, push the back end of the key upward. When a gap opens, remove the mechanical key. 2. Then, manually remove the back end to access and replace the battery. 3. After installing the new battery, reinsert the key holder, completing the battery replacement process. Here is more information about Mercedes-Benz keys: 1. The lifespan of a Mercedes-Benz key battery is typically two years, though the original factory battery can last up to six years. 2. When the key battery is low, the Mercedes-Benz vehicle will provide a prompt. Upon pressing the ignition switch, the dashboard will display a message to replace the key battery. 3. The design of Mercedes-Benz key fobs is not dependent on the model or series. Keys from the same era, whether for C-Class, E-Class, or S-Class, are generally similar, and the method for replacing the battery is largely the same.