A6 Quattro Sedan V8-4.2L (BVJ) (2007)
Battery Control Module: Customer Interest
Audio System - Vehicle Battery Drain
91 08 147
2014127/3
November 24, 2008.
Supersedes Technical Service Bulletin Group 91 number 08-20 dated June 4, 2008 for reasons listed below.
Affected Vehicles
27 Battery dead or low after returning to the vehicle
Condition
The vehicle battery is or is almost discharged and the Energy Management Control Module J644 indicates an increased static current in order of 700
mA.
Technical Background
Due to a software issue, the Radio R might not enter sleep mode if the ignition is turned off and the radio power remains on.
Production Solution
Software improvement in Model Year 2007.
Service
Evaluate the vehicle battery historical data stored in the Energy Management Control Module J644.
Then go to 61 - Battery control in Guided Functions and select the menu shown above.