Audi A3 8V Facelift VCDS Mods: A Guide to Coding Changes

The Audi A3 8V facelift (FL) introduced changes to the coding process compared to its pre-facelift (PFL) predecessor. Certain modules, seemingly adopted from higher-end Audi models like the S3, present new coding challenges. This guide delves into these differences, focusing on VCDS modifications for the FL A3.

Coding Changes in the Facelift Model

A significant change lies within the 09 Central Electrics module. Unlike the PFL, long coding is absent in the FL variant:

Address 09: Cent. Elect. (J519)
Labels:. 5Q0-937-08X-V2.clb
Part No SW: 5Q0 937 084 CF  HW: 5Q0 937 084 CF
Component: BCM MQBAB M+ H34 0236
Serial number: 02001704100986
Coding: 000000000000000000000000000000000000000000000000000000000000
Shop #: WSC 06314 790 00021
ASAM Dataset: EV_BCMMQB 017001  ROD: EV_BCMBOSCH_017_VW27.rod
VCID: 7EA6F64C607B6787296-802A

Modifications within this module now require adaptation channels. Even simple adjustments, such as enabling or disabling alarm acknowledgment, deviate from the PFL method.

Alarm Acknowledgment: A Case Study

Activating the acoustic alarm feedback on the FL A3 requires a different approach. While the PFL allowed direct coding changes, the FL necessitates using adaptation channels:

1. Access Security Access within module 09 using the code 31347.
2. Navigate to Adaptation channels.
3. Locate “Acknowledgement Signals – Menuesteuerung akustische Rueckmeldung.”
4. Set the value to “Active.”

However, this seemingly straightforward process doesn’t always yield immediate results. A more involved procedure, outlined below, may be required:

1. Ensure all doors and windows are closed, but the car is not locked.
2. Turn the ignition to the first position.
3. Turn on the MMI and select the Radio.
4. Revert any previous alarm-related coding changes.
5. Reset the MMI.
6. Turn off the ignition and wait for 5 minutes.
7. Repeat steps 1 and 2.
8. Enter Security Access (31347) in module 09.
9. In Adaptation, activate the following:
   • (2) – Acknowledgement Signals – Akustische Rueckmeldung Verriegeln
   • (1) – Acknowledgement Signals – Akustische Rueckmeldung entriegen
   • (7) – Menuesteuerung akustische Rueckmeldung
10. Reset the MMI.
11. Cycle the ignition.
12. Activate “Tone when Locking” via the MMI: Menu > Car > Systems > Vehicle Settings > Central Locking / Tone When Locking.
13. Test functionality.

This revised method highlights the shift towards MMI control for certain features previously managed through direct coding.

Conclusion: Navigating the Facelift Coding Landscape

The Audi A3 8V facelift presents new complexities for VCDS modifications. The transition to adaptation channels and increased reliance on MMI settings necessitate a deeper understanding of the updated system architecture. As the coding community continues to explore the FL platform, sharing experiences and documented procedures will be crucial for successful customization. This guide serves as a starting point for understanding the nuances of Audi A3 8v Facelift Vcds Mods.