How to Replace the Battery in a 2002 Audi A4 Key Fob
Remote key fob allow easy access to your A4. When the key battery is dead or weak you will lose your fob’s ability to use remote opportunities. It's not complicated to change the battery in your keyless entry remote DIY. Everything you need is outlined below.
What size battery does 2002 Audi A4 key fob takeChanging battery in keyless entry remote require 1xCR2032 battery and flat head screwdriver. Prepare these materials and tools before opening and make sure to match the size of your fob’s batteries.
- 1xCR2032 battery
- flat head screwdriver
Step by step instruction
A tiny button cell battery installed inside the your key fob. Open key before you try to pry apart the keyless entry remote. Your key fob key can be unmounted with slide.
Carefully try to disassemble your key fob with flat head screwdriver. Replace one CR2032 battery with flat head screwdriver.
Now it's time to install new battery in fob’s shell. Battery must be installed with the same position as was a previous. Your remote key fob will not work if you mistakenly place battery wrong way.
After the new battery installed, verify keyless entry remote functionality by pressing buttons. If everything working good, assemble your fob’s case in reverse order.
The last thing to do is put your cover back on fob. Gently try to assemble the two halves in place by hands from top to bottom. Check your remote key fob shell for gaps. If it is not tightly closed try to repeat last step.
Video of key fob disassembly
2004 Audi A4 key fob battery replacement
Still not working? Buy new one