Hey guysI just got myself a A4 b6 and the radio buttoms are dead, for most of time. Took the car back to dealer 3 weeks ago and the dealer used the multipurpose lubricate to sprays into the gaps of the buttons and it actually works but only for like 1 day. Got an Audi A4 2.5TDi Multitronic Cabriolet on a "04" plate. The radio has stopped working and only crackles. Sometimes it will come back on, but only for a couple of seconds when going over a bump in the road. The CD works fine. Is this likely to be an aerial tuner problem? If so where is it located?

When you add an aftermarket radio you have to put in a new ignition feed so that the radio turns on and off with the key. This can be done two ways 1. by using a piggyback/add a fuse (see pictures) or 2. an online fuse (see pictures) Option 1 is the easiest. You can get a piggyback fuse from Amazon/eBay/Halfords.

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audi a4 b6 radio not working