How do you change the battery in key fob?

It�s a two part sliding mechanism. Hold the key in your hand with the key bit pointing forward and the larger part of hosing to the right. Now with your thumb on the back of the fob supporting the...

1. Release Key by pressing down on the release panel on the side (it has a key insignia on the lever) #2. Remove key by pulling chain with release panel open at the same time. #3. Use flat pry tool...

Here's what I used for my 2006 Passat: http://forums.vwvortex.com/zerothread?id=3334037

Use a small precision flat head screwdriver. You can try a butter knife but you may damage the plastic.

There is no battery in the key fob just take it to the dealer with all the keys u have from the x and they reset them togther...