How to Replace the Battery in a Mercedes S500 Key?
1 Answers
There is a button on the back of the key. Press this button and slide the back cover forward to open the key. The battery is located in the slot nearby. During the replacement process, pry open this slot, remove the old battery, and replace it with a new one. Next, reattach the back cover of the key. Once installed, the battery replacement is complete. The lifespan of a Mercedes key battery is typically two years, while the original factory battery can last up to six years.