What is the detailed method for replacing the battery in a Volkswagen car key?

[LondynAnn]

The method for replacing the battery in a Volkswagen car key is as follows: 1. Open the folding part of the key and gently pry into the middle of the gap using a flathead screwdriver. 2. Once a larger gap is created, pull the key ring at the bottom firmly to separate the key into upper and lower parts. 3. Forcefully split the side, dividing this part of the key into front and back pieces, revealing the battery and circuit board sections. 4. Remove the old battery and replace it with a new one. Relevant information about car keys is as follows: 1. Car keys available on the market mainly include mechanical and electronic types. 2. Mechanical car keys are the most traditional and widely used, with simple functions limited to lock and unlock buttons. However, mechanical car keys have a lower failure rate, require less frequent battery replacement, and are easier to maintain.