Electrical - Battery Discharges If Vehicle Sits

27 Battery dead or low after returning to the vehicle

91 10 07

2014127/4

March 17, 2010.

Supersedes Technical Service Bulletin Group 91 number 08-147 dated November 24, 2008 for reasons listed below.





Affected Vehicles





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 within Model Year 2007.

Service

1. Evaluate the vehicle battery historical data stored in the Energy Management Control Module J644.





2. Then go to 61 - Battery control in Guided Functions and select the menu shown above.








EXAMPLE FOR A VALID CASE

Tip: Do not replace the Radio R. A software update is required.

MMI System Update procedure

Perform a MMI Zug update using CD bundle 4F0 998 961.

Tip: Refer to TSB 2019334 "91 MMI High System software update (Zug 864 - update) procedure." Be aware that both Update CDs in the bundle have to be used for a complete Zug update.

For further SVM update instructions and troubleshooting, please refer to TSB 2011732 "00 Software Version Management (SVM), operating instructions."





Warranty





Required Parts and Tools

Additional Information

The following Technical Service Bulletin(s) may be necessary to complete this procedure:

^ TSB 2019334, "91 MMI High System software update (Zug 864 - update) procedure"

^ TSB 2017424, "91 MMI High: Some functions unavailable after 07 - Display/control unit replacement or MMI Zug software update"

^ TSB 2020168, "91 No phonebook and/or call list download from cell phone to MMI system after MMI software update"

^ TSB 2011732, "00 Software Version Management (SVM), operating instructions"

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