Afternoon,
I recently tried to change my RCD300 mp3 with a pioneer avh3200bt using the necessary harness adaptor. The pioneer worked fine for about 20 minutes but as i was moving the headunit in to the centre console the head unit switched off. I checked the fuse on the rear of the pioneer and proceeded to check the cars fuses ( all were fine ). I then tried the original headunit to see if that worked, no power to the headunit!
I double checked the fuses inside the dash and by the battery but all were fine. I reset the battery for half an hour, no luck! I then got a someone to diagnose it using VAGCOM but it wouldn’t read the headunit, vagcom seemed to think the headunit was unplugged
any ideas?