How to Replace the Battery in a Mercedes-Benz R280LCDI Key?

[DiJudah]

Steps to replace the battery in a Mercedes-Benz R280LCDI key: Before replacement, first identify the battery model for the car key, then select a new key battery according to the specified model; Push the marked switch upward from the tail of the key, and the hidden mechanical key will pop out slightly, allowing you to remove the mechanical key; Use the extracted mechanical key to press against the marked position, gently applying force to open the key casing; After removing the key casing, you will find the battery located relatively deep inside. Insert a toothpick along the gaps on both sides and gently pry to remove the old battery; When installing the new battery, ensure the positive and negative poles are correctly aligned and not reversed. Follow the original steps to reassemble the key to complete the process.