Attachment Bulletin # 910511
Group: 91Number: 05-11
Date: Jun. 21, 2005
Subject:
Radio, Sound Volume May Fluctuate When Accelerating From a Stop
Model(s):
A8, A8L 2004 --> 2006
Condition
The sound drops to a lower volume when accelerating from a stop.
Volume increases then with the vehicle speed. When stopping the vehicle, the sound jumps to a higher volume.
Cause:
This condition can be encountered, if the MMI Most Bus components and the Data Bus on Board Diagnostic Interface -J533- are not compatible.
The Audiopilot function (arrow) has to be enabled in the MMI Menu Radio.
This can occur after update programming the MMI Most Bus components but not module -J533-.
It can happen as well, when -J533- was replaced by a module with an old software level.
Service
Solution:
The Data Bus On Board Diagnostic Interface -J533- has software level 0020 or 0030 and has to be updated (programmed) to 0040. Therefore, use Update CD W42A8317, which was sent free of charge to your Dealership.
Tip:
Additional copies of the "Update Programming" CD (Part No: W42A8317) may be ordered from the Audi Technical Literature Ordering Center.
- Insert Update CD W42A8317 in the CD drive of the VAS 5051/5052 Diagnostic Tool.
- Connect VAS 5051/5052 to the vehicle and select Addressword 19- Data Bus on Board Diagnostic Interface -J533- in Vehicle Self Diagnosis.
- Select Function "Update programming".
- Erase possible DTCs in all control units after performing the Update programming.
- Verify, if Audiopilot function works properly now.
When procedure applies to vehicles within the New Vehicle Limited Warranty, use the table.