How to Replace the Battery in a Mercedes-Benz R550 Key?

1 Answers
McRafael
07/29/25 11:30pm
Mercedes-Benz R550 key battery replacement steps are as follows: 1. First, push the switch upwards from the tail of the car key to remove the mechanical key. 2. Then, use the mechanical key to press against the notch on the car key and pry it outward with force to open the back cover of the key. 3. Next, remove the old battery and replace it with a new one. 4. Finally, close the back cover of the key and reinsert the mechanical key. Notes: 1. Do not press the mechanical key too hard when prying, as it may break the cover's latch. 2. Pay attention to the battery's positive and negative poles during installation.
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