How to disassemble a car key to change the battery

The steps I learned for taking apart a car key to change the battery are to prepare a new battery, toggle the mechanical key, pry open the key case with a screwdriver, remove the old battery and put in the new one, and then reassemble the key case.

But please be careful when replacing the battery, and do not use excessive force to avoid damaging the circuit board or clips inside the key. If you can't replace the battery yourself, we recommend contacting a professional auto repair store or 4S store for replacement.