How to Replace the Battery in a 2002 Volkswagen Passat Key Fob

Remote key fob allow easy access to your auto. When the key battery is weak you’ll not to be able unlock doors from distance. In this article, we outlined how to disassembly your car key fob and replace your Volkswagen key battery step by step.
What size battery does 2002 Volkswagen Passat key fob required
Replacing battery in key fob require flat head screwdriver and 1 CR2032 battery. Prepare these materials and tools before opening and make sure to match the size of your fob’s batteries.- flat head screwdriver
- 1xCR2032 battery
Simple steps to replace the battery in your car's keyless entry remote
A tiny button battery installed inside the your remote key fob. Open the key if it is in the remote key fob.
Carefully try to open your keyless entry remote with pry tools. Change CR2032 battery with flat head screwdriver.
Change old battery with fresh one CR2032. Battery must be installed with the same polarity as was an old. Your key fob will not work if you by mistake place battery wrong way.
Before assembling keyless entry fob's case, check that everything working good by pressing buttons on circuit board.
The last thing to do is put your cover back on fob. Gently try to put the two halves in place by hands from top to bottom. Inspect your remote key fob shell for gaps. If it is not tightly closed try to repeat last step.
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Still not working? Buy new one