How to Open Your 2000 Volkswagen Passat Key Fob & Change Battery

If your Volkswagen remote key fob is not working properly, the battery probably must to be changed. In this case, we are going to tell you how to disassembly Volkswagen key fob and change a weak or dead battery yourself. If you choose to do it at home near Passat, use this guide, but don't forget to check all you need before you start.
What kind of battery remote key fob require
Prior to open keyless entry remote be sure that you have all recommended tools and materials: CR2032 battery and flat head screwdriver.- 1xCR2032 battery
- flat head screwdriver
Step by step guide
A button battery installed inside the your keyless entry remote. Carefully try to disassemble your keyless entry remote with pry tools. Replace 1 CR2032 battery with flat head screwdriver.
Replace old battery with fresh one CR2032. Be sure to connect the battery the right way around in a circuit. Your key will not work if you connect battery wrong way.
After the new battery installed, verify key fob functionality by pressing buttons. If everything is functioning, assemble your keyless entry fob's body in reverse order.
At this point squeeze fob’s back cover together. Line your shell pieces together and put it together by hands from top to bottom. Inspect your keyless entry remote case for gaps. If it is not tightly closed try to repeat last step.
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Still not working? Buy new one