A8L Quattro Sedan V8-4.2L (BVJ) (2007)
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Amplifier: Customer Interest
Audio System - Acoustic Lens Tweeters Don't Slide
91 Bang & Olufsen: Both Acoustic Lens Tweeters Do Not Slide In Or Out Of The Dashboard
91 09 17
2014157/4
March 25, 2009
Supersedes Technical Service Bulletin Group 91 number 08-98 dated November 10, 2008 for reasons listed below.
Vehicle Information
Condition
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The left and the right Bang & Olufsen acoustic lens tweeter assemblies do not slide in or out of the dashboard. This may happen consistently or
sporadically.
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The Software Version of the Bang & Olufsen Amplifier is 0180.
Technical Background
Software fault in the amplifier.
Production Solution
Software improvement during model year 2007.
Service
An MMI system update must be performed. Refer to Technical Service Bulletin 2019334.
