A8L V8-4.2L (BFM) (2004)
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Central Control Module: Customer Interest
Audio System - Surround Setting Lost
91 MMI Surround setting lost
91 09 19
2015136/3
March 25, 2009
Supersedes Technical Service Bulletin Group 91 number 08-106 dated November 11, 2008 for reasons listed below.
Vehicle Information
Condition
The customer complaint is that the DSP BOSE sound setting does not remain on surround fr or surround rear.
Instead, normal is displayed, and the corresponding sound focus is audible.
Technical Background
