Unjustified Can Communication Fault Entries Stored In Navigation Control Module (GROUP 91, NO. 08-142)

WARNING: This page is about the A6 Quattro, 2.7 D, Automatic, which is a different variant/trim than selected.

Publication date: 2008-11-13
Reference number: GROUP 91, NO. 08-142
Supersedes refnos: 2016907, GROUP 91, NO. 07-59

UNJUSTIFIED CAN COMMUNICATION FAULT ENTRIES STORED IN NAVIGATION CONTROL MODULE

TECHNICAL SERVICE BULLETIN

Reference Number(s): GROUP 91, NO. 08-142 (2016907/2), Date of Issue: November 13, 2008

AUDI:	TT 2001 - 2006; A4 2001 - 2003; A6 2001 - 2004; A8 2001 - 2003
GROUP:	91 - Radio, Telephone, Board Computer, Multi-Function Indicator (MFI)

Superceded Bulletin(s): GROUP 91, NO. 07-59, Date of Issue: December 10, 2007

SERVICE INFORMATION

91 08 142 2016907/2 November 13, 2008. Supersedes Technical Service Bulletin Group 91 number 07-59 dated December 10, 2007.

APPLICABLE MODELS AND YEARS

Model(s)	Year	VIN Range	Vehicle-Specific Equipment
TT	2001 - 2006	All	Navigation 4 Installed
A4	2001 - 2003	All
A6	2001 - 2004	All
A8	2001 - 2003	All

CONDITION

No customer complaint, but in the fault protocol of the Navigation 4, one or several sporadic communication faults about other control units are logged. The function of the navigation system is not affected.

TECHNICAL BACKGROUND

When starting the vehicle, the battery voltage may drop so far that the communication on the data bus is briefly disrupted.

PRODUCTION SOLUTION

No change.

SERVICE

Ignore and erase the fault code entries if there is no customer complaint. A replacement of the navigation system is not necessary.

Unnecessarily replaced systems will be re-debited.

WARRANTY

This TSB is informational only and not applicable to any Audi warranty.

ADDITIONAL INFORMATION

All parts and service references provided in this TSB are subject to change and/or removal. Always check with your Parts Department and service manuals for the latest information.