Hi guys, im new on this form :thumbsup:. Ok so basically was looking for your experties , I have just done a single to douoble din rns-e upgrade on my audi a4 b6. Everything with the RNS-E seems to be working fine without me getting it coded which is strange. the issue im having is with the climate control unit which i also changed. basically only the passenger side air vent and the drivers side air vent seem to be working after the change of the unit . the center and the windscreen heater doesnt work at all now. also no matter what temperature i set it to it seems to be blowing warm air. is it a simple coding issue? the instructions i followed for the rns-e install gave no indication that the climate control unit will have to be coded. any help is much appretiated thanks