How to Completely Disassemble a Passat Car Key?
2 Answers
Volkswagen Passat key disassembly method is as follows: 1. Open the folded key head. 2. Use a flathead screwdriver to pry the seam in the key slot. 3. Separate the key into two parts: the left side with the key head contains the electronic identification chip, while the right side is the battery-powered remote. 4. Separate the remote's outer shell by prying with a flathead screwdriver. 5. After prying open the remote's outer shell, you can replace the battery. Additional information: Press the remote's button to pop out the key, which facilitates operation when removing the cover. Hold one side of the key firmly with one hand while using the screwdriver with the other hand to open the cover.
I've helped my neighbor disassemble the Passat key several times, and the steps are quite simple. First, press the small button on the back of the key and pull out the mechanical key. Then use a small flathead screwdriver or thin plastic sheet to gently pry open the key shell along the middle seam - be careful not to use too much force as the clips may break. Once the back cover is off, you'll see the coin cell battery (usually CR2032) and green circuit board inside. If you want to fully disassemble it, remove the circuit board by gently releasing two small clips on its back with tweezers. Important warning: never touch the metal contacts on the circuit board with bare hands as static electricity can damage the chip. When reassembling, first place the battery correctly, then align and snap the shell halves together, and finally reinsert the mechanical key to lock everything in place.
