2008-2010 Audi A3 Sportback Key FOB Battery Replacement

The following is a guide on how to replace the...

iFixit Library 2008-2010 Audi A3 Sportback Easy 5 minutes Guide 128267

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Guide overview

Before you begin

The following is a guide on how to replace the battery for the key FOB on a 2008-2010 Audi A3 Sportback. The key fob utilizes the CR2032 lithium battery. When you try to lock or unlock your car doors with the key FOB and they do not do so, then you need to replace your key FOB battery. See the troubleshooting page.

Step 1

Repair step

⌕

With the tip of a flat head screwdriver, insert it under the edge of the key fob and push against the back cover to pop it off.
Take caution as you apply force to open the cover as the flathead screwdriver is a sharp tool.

Step 2

Repair step

⌕

Remove the round CR2032 battery from the fob back cover with a plastic spudger or opening tool.
The battery has a "+" positive side (textured surface) and a "–" negative side (smooth surface).

Step 3

Repair step

⌕

Insert a new battery and pop the cover back on by hand.