Where can I buy a car key battery?

Car key batteries can be bought in 4s stores or auto parts stores.

Batteries for car keys can be bought in auto parts stores or 4S stores. General car services, such as silver centers or professional key matching companies, are sold. Pay attention to remember that before buying, you need to know the battery model of your automatic car key, which is usually written in the owner's manual of the car.

How to replace the car key battery?

1. Turn the car remote control key to the back, and you can see that the back cover is divided into two parts. Let's look at the side of the key ring. The battery is under the back cover here.

Turn the key aside to see if there is any gap. Generally, there is a gap between the key ring and the side of the key, but the back cover cannot be removed by hand.

3. Insert it into the gap with a flat screwdriver, and gently push it upward to open the back part. It is impossible to completely remove the rear cover at one time because the force is exerted by one component. Move the screwdriver to both sides along the gap and gradually expand the gap so that the whole rear opening can be opened.

4. Move the back cover in the closing direction by hand, and you can see the battery inside, and the protruding clip can be seen on one side of the battery. When we put the battery in the clip, it will expand. As shown in the picture, we slide the battery to the opposite side and take it out.

5. Put the battery into the car remote control key in the opposite direction, pay attention to distinguish the positive and negative poles, and don't install it backwards.