How to change the car key electronics?

The method of replacing the car key battery is as follows: 1. Before replacing the battery of the car key, you need to open the key first. You can use a mechanical key or a screwdriver to open the key. The cover plate of the car key is fixed. Just pry the buckle of the key loose, and you will find a computer board after opening the key, and the battery can be seen on the motherboard. There are several specifications of batteries used in car keys, namely, CR2302, CR2450, CR 16 16, CR2025, CR 1620, etc. The model of the battery is generally on the back of the battery. 3. The model of the battery to be replaced should be the same as that of the original car key. When replacing the battery, it is necessary to put the battery into the car remote control key in the opposite direction of disassembly, and it is necessary to distinguish the positive and negative poles of the battery when installing. 4. After replacing the battery, you need to aim the back cover at the car remote control key, put it down from above, and then press it down with a little force until you hear the aiming sound.