BEST and SAFE : How to change Audi remote key battery - A3 A4 A6 A8 TT Q6 Q7 Quattro 

Quick video on popping open my Audi key fob and replacing the battery. This specific one was for an A3 but the fob is the same for a whole range of their models including A4, A6, A8, TT, Q6, Q7, and Quattro
Grab the stuff (affiliate links that support the channel):
Battery @ amzn.to/3P4cQwq
Screw driver @ amzn.to/3P2o9Fq