A3 8V Facelift VCDS Coding: Differences and Adaptations

The Audi A3 8V facelift (FL) introduced changes to the coding process compared to its pre-facelift (PFL) predecessor. Notably, certain modules, like the 09 Central Electrics, now utilize adaptations rather than long coding, drawing from the architecture of larger Audi models like the S3. This shift can make certain modifications more complex. This article explores these differences, specifically focusing on common VCDS coding adjustments for the A3 8V facelift.

VCDS Coding Changes in the Facelift A3 8V

The 09 Central Electrics module in the FL A3 8V lacks long coding. Instead, all modifications are performed through adaptations. For instance, enabling the alarm acknowledgement chirp, a straightforward long coding adjustment in the PFL, now requires a different approach.

Address 09: Cent. Elect. (J519)
Part No SW: 5Q0 937 084 CF
HW: 5Q0 937 084 CF
Component: BCM MQBAB M+ H34 0236

The absence of long coding in this module necessitates utilizing adaptation channels to achieve the desired modifications.

Enabling Alarm Acknowledgement Chirp via Adaptation

While the traditional method of enabling alarm acknowledgement through long coding is unavailable in the FL A3, it can be accomplished via adaptation channels within module 09.

Initially, accessing “Acknowledgement Signals – Menuesteuerung akustische Rueckmeldung” in adaptation channel (7) and activating it seems logical, mirroring the PFL process. However, this method might not yield the desired result. A more involved procedure has proven successful:

1. Preparation: Ensure all doors and windows are closed. The ignition should be in the first position (accessory mode) with the MMI on the radio screen. Revert any prior alarm-related coding changes and perform an MMI reset. Turn off the ignition and wait for 5 minutes.

2. Adaptation Changes: With the doors and windows closed and the ignition in the first position (accessory mode), access module 09, enter Security Access code 31347, and proceed to Adaptations. Activate the following:

   • (2) – Acknowledgement Signals – Akustische Rueckmeldung Verriegeln (Locking)
   • (1) – Acknowledgement Signals – Akustische Rueckmeldung entriegen (Unlocking)
   • (7) – Menuesteuerung akustische Rueckmeldung (Menu Control Acoustic Feedback)

3. MMI Activation and Test: After applying the adaptations, reset the MMI. Turn off the ignition, wait for 1 minute, and then turn the ignition back to the first position. Finally, navigate to the MMI menu: Menu > Car > Systems > Vehicle Settings > Central Locking / Tone When Locking and activate the “Tone when Locking” option. Turn off the ignition, exit the car, and test the alarm chirp functionality. This MMI step is crucial as the setting now resides within the infotainment system.

Conclusion

The Audi A3 8V facelift introduces significant changes to VCDS coding procedures, specifically in the utilization of adaptations over long coding in certain modules. While this shift may require adapting to new methods, such as the multi-step process for enabling the alarm acknowledgment chirp, understanding these differences is essential for successfully modifying the FL A3 using VCDS. As more FL A3 owners explore VCDS coding, further discoveries and adaptations will likely emerge, highlighting the ongoing evolution of automotive software and customization.