On newer audis you will get a warning on your dashboard that displays a key and battery symbol.
Audi car key battery type.
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This tutorial explains how to replace the key fob battery in audi a3 8p 8v 2003 2018 audi a4 b7 2004 2009 audi a6 c6 2004 2011 audi q3 8u 2011 2018 audi q7 1st.
This article applies to the audi q5 q7 2009 present.
Audi car key batteries before removing batteries please follow the instructions in your manufacturers handbook.
The start stop button will also not work.
To fix these problems change the battery on your audi key fob toc.
Please select the battery type size from the selection below by using the part number shown in your handbook or part number shown on the battery or batteries inside your key or key fob.
If your audi key fob battery dies or is weak you will not be able to lock or unlock the car.