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How to replace / change audi key fob battery (Audi A3, A4, A5, A6, A7, A8, Q3, Q5, Q7) in 4 steps - YouTube
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DIYKEY Keyless for Audi A3 S3 2012 2013 2014 2015 2016 2017 2018 2019 433MHz 8V0 837 220 D 8V0837220D / 8V0837220 Remote Key Fob - AliExpress
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