Campaign 91E2 - Audio System Software Update: Overview
RVU 91E2 - Software Update for B&O Sound System (CP)91 09 72
2018932/2
October 21, 2009.
Supersedes Technical Service Bulletin Group 91 number 08-54 dated October 30, 2008 for reasons listed below.
Affected Vehicles
Condition
This RVU has been proactively released to prevent the following condition from occurring in the vehicle:
^ No audio output.
^ DTC (Control unit defective) is stored in J525 - digital sound system control module
This Required Vehicle Update (RVU) is in effect until January 12, 2011. After that date, this RVU will expire and no longer be in effect.
Vehicle must meet all of the following criteria:
^ Procedure is valid only for vehicles that show the CP / 91E2 code in the ElsaWeb Campaign/Action Information screen on the day of repair.
^ Software Version of the J525 - digital sound system control module is 0390.
^ Vehicle must be within the Limited New Vehicle Warranty.
^ Procedure must be performed within the allotted time frame stated in this Technical Service Bulletin.
^ Procedure must be performed on applicable vehicles in dealer inventory prior to sale.
Technical Background
On Audi A4 and A5 vehicles manufactured within a limited period and equipped with a Bang & Olufsen (B&O) Sound System of Software Version 0390, DTC (control unit defective) may be stored in the 47 - sound system fault memory due to a low voltage condition in the on-board power supply. In this case, there will be no audio output.
Production Solution
Warranty
Required Parts and Tools
^ Destroy and properly dispose of removed parts in accordance with local, state and federal/provincial environmental regulations.
^ If you have exhausted your allocated parts and you require additional parts for vehicles affected by this RVU but have exceeded your Upper Order Limit, please submit your requests for additional parts via email. Be sure to include the affected VINs with your order. Prior to submitting your request, ensure that each vehicle has the CP/91E2 code open in ElsaWeb. Your order will be reviewed and processed accordingly.
Additional Information
The following Technical Service Bulletin(s) will provide additional information to complete this procedure:
^ 2017424 91 MMI High: Some functions unavailable after 07 - Display/control unit replacement or MMI Zug software update
^ 2011732 00 Software Version Management (SVM), operating instructions
All parts and service references provided in this RVU are subject to change and/or removal. Always check with your Parts Department and service manuals for the latest information.