Audi Sound System (9VD) retrofit

Status:

This retrofit has been succesfully implemented and tested on mine A4 B9, and it’s still active.

100%

Needed parts:

  • R211 8W5035412 Subwoofer

    • 191972704 connector

  • R208 8W0035454 Central speaker  

    • 4B0971832 connector

  • 8W5 863 411 Rear shelf panel (check modification code)

    • Distance piece 8W5863954

  • 8W5035405B + 8W5035406B Shelf panel covers

  • 000979021E Quadlock crimp terminals x4

  • VCDS Diagnostic Interface

  • VCP Diagnostic Interface

Price:

  • Hardware listed above

300 €

  1. Installing subwoofer
  2. Installing central speaker
  3. 5F wiring QUADLOCK connector
  4. 5F parametrization upload

Subwoofer R211 8W5035412

Central speaker R208 8W0035454

QUADLOCK subwoofer wiring

QUADLOCK central speaker wiring

VCP parametrization

VCP Dataset: A4_B9_mib2_8w0035039x.zdc

  • Audio_Sound_Announce_A4_LIMO_AUDI_SOUND_SYSTEM_XX
  • ASAM_ODX_MUX_HBAS_AUDI_SOUND_SYSTEM
  • Audi_Sound_A4_LIMO_AUDI_SOUND_SYSTEM
  • Audio_Sound_Configuration_AUDI_SOUND_SYSTEM

Coding: 

(Warning this will change the car picture to Q7 in the MMI, but Subwoofer control will be available)

  • Go to module 5F Multimedia
  • Go to Long coding
  • Change the following:
    • byte_1_Car_Class: 7
    • byte_1_Car_Generation: 3
    • byte_2_Car_Derivate: 6
    • byte_2_Car_derivate_Supplement: 0
  • Do a MMI reset (hold down NAV + RADIO + center ****)
  • Enjoy your subwoofer control with improved sound quality!
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