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

[OAlyssa]

When the battery in a Mercedes-Benz car key needs to be replaced, the detailed steps for replacement are as follows: 1. From the rear end of the car key, push up the marked switch, and the hidden mechanical key will pop out. Remove the mechanical key and open the key casing: After opening the key casing, the battery position can be seen. Slide into the gaps on both sides, gently pry to remove the old battery. After inserting the new battery, first insert the top of the casing, then press firmly on the other end to complete the battery replacement. Also, remember to reinsert the mechanical key. 2. Before replacing the battery, first identify the battery model for the car key: The battery model is specified in the vehicle's user manual. Choose a new key battery according to the specified model.