How to Open Your 2003 Audi A8 Quattro Key Fob and Change Battery

If your A8 Quattro remote key fob is no longer unlock doors properly, the battery likely must to be changed. It's not complicated to replace the battery in your keyless entry remote DIY. All tools, that you need is outlined in this post.
What is the battery remote key fob use
Before going to disassembly key fob be sure that you have all recommended tools and materials: flat head screwdriver and CR1620 batteries.- 2xCR1620 batteries
- flat head screwdriver
Simple steps to replace the battery in your A8 Quattro's remote key fob
A small coin battery installed inside the your key fob. Open key before you try to pry apart the remote key fob. Your keyless entry remote key can be unmounted with slide.
Gently try to open your key fob with flat head screwdriver. Change 2 CR1620 batteries with flat head screwdriver.
Change old batteries with new one CR1620. Be sure to connect the battery the right way around in a circuit. Your key fob will not work if you connect battery wrong way.
After the new batteries installed, verify key fob functionality by pressing buttons. If everything is functioning, assemble your keyless entry fob's shell in reverse order.
The last thing to do is put your cover back on fob. Delicately try to put the pieces in place by hands from top to bottom. If your fob case tightly closed, we done. If not, repeat the last step.
How to change the battery video instruction
How To Replace Audi A8 Key Fob Battery 2003 2004
Still not working? Buy new one