Então, o que tens, não é um rns-"D", e sim um rns-"E", estes sim levam cartões sd e DVD maps.
E a configuração é outra, diferente da que lhe facultei.
E No Cd Charger, significa, que a hedaunit RNS-E, não está conectada a caixa de cds.
Convém, verificar se o doador, também era uma B6 e se bom confirmar as ligações dos pins, pois este embora está lá, ligado e bem montado, mas não há sinais vitais dele.
Com o vag-com, veifique a configuração RNS-"E" e teste, de acordo com o coding abaixo:
Coding
0?xxxxx: Model
1 = Lamborghini
2 = Audi A3 (8P)
3 = Audi A4 (8E)
4 = Audi A4 Cabriolet (8H)
5 = Audi A6 (4B)
6 = Audi TT (8J)
7 = Audi R8 (42)
0x?xxxx: Treble Speaker Monitoring inactive
0 = Front Treble Speaker Monitoring inactive active (NOT Audi A4 Cabriolet)
1 = Front Treble Speaker Monitoring inactive inactive (ONLY Audi A4 Cabriolet)
0xx?xxx: Sound Characteristic
0 = Sound Characteristic linear
1 = Audi A4 (8E)
2 = Audi A6 (4B)
3 = Audi A4 Cabriolet (8H)
4 = Audi TT (8J)
5 = Audi A3 (8P)
9 = Sound System
0xxx?xx: Telephone/Telematic
1 = Telephone not installed (Remote Feed Voltage for Microphone active)
2 = Base Plate (Temic - Remote Feed Voltage for Microphone inactive)
3 = Base Plate (Cullmann - Remote Feed Voltage for Microphone inactive)
4 = Base Plate (Nokia - Remote Feed Voltage for Microphone inactive)
5 = Telematic Europa (Remote Feed Voltage for Microphone inactive)
6 = Telematic US (Remote Feed Voltage for Microphone inactive)
7 = Base Plate diagnostic capable with Comfort Control
0xxxx?x: Equipment I
1 = Tuner not installed
2 = Digital-Radio installed
3 = Satellite-Radio installed
4 = Satellite and Digital-Radio installed
5 = Analog Input (AUX) installed
7 = Satellite-Radio & Analog Input (AUX) installed
0xxxxx?: Equipment II
1 = TV-Tuner/CD-Changer/Multi-Function Steering Wheel not installed
2 = TV-Tuner installed
3 = CD-Changer installed
4 = TV-Tuner and CD-Changer installed
5 = Multi-Function Steering Wheel installed
6 = TV-Tuner and Multi-Function Steering Wheel installed
7 = CD-Changer and Multi-Function Steering Wheel installed
8 = TV-Tuner and CD-Changer and Multi-Function Steering Wheel installed