How to change the battery for the car key of Mercedes-Benz?

Before replacing, it is best to know the model of the car key battery, which is usually written in the owner's manual, and then choose a new key battery according to the specified model. Push the identification switch upward from the tail of the key, the hidden mechanical key will pop up a little, and then the mechanical key can be taken out. Or the tail of the key. Just take out the mechanical key and hold it at the marked position. With a gentle force, the key shell can be opened. After removing the key shell, you can see that the battery is deep. Grab anything and go in through the gap on both sides. You can take out the old battery with a light pry. After replacing the new battery, pay attention to the fact that the positive and negative poles of the battery cannot be connected backwards, and then follow the installation steps. Insert the battery into the top of the housing first, and then press the other end hard to replace the battery.

1. First push up the identification switch and take out the mechanical key.

2. Open the key shell and pry out the old battery.

3. Just change a new battery.