Air Bag System - Warning Lamp ON/No Codes Set

SI B 72 10 06
Safety Restraint Systems

November 2006
Technical Service

This Service Information bulletin supersedes S.I. B72 10 06 dated April 2006.

[NEW] designates changes to this revision

SUBJECT
Airbag Warning Lamp Illuminates - No Fault Codes

MODEL
E90, E91 (3 Series) Vehicles produced to May 31, 2006

SITUATION
The red Airbag Warning Lamp (AWL) in the instrument cluster remains illuminated after turning on KL-15 and completing the self-check, but goes out again if the key is cycled off/on. No fault codes are stored in the MRS5 (Multiple Restraint System) control module. The fault symptom occurs on a very intermittent basis.

CAUSE
Error in the MRS5 control module.

CORRECTION
In case of customer complaint, using DISPlus/GT1, check for stored faults and work through any related test modules - in particular, faults relating to bus interruptions affecting DSC (Dynamic Stability Control), CAS (Car Access System), FRM (Footwell Module) and JBE (Junction Box Electronics).

If no fault codes are shown, it can be assumed that the problem is the one described. Note: FASTA data will show FC A3B3 is stored in the Kombi (Instrument Cluster) however, this fault will not be seen using DISPlus/GT1. NEW Reprogram the vehicle using Progman V22.00.00, or higher - refer to B09 05 01 (Coding, Individualization and Programming), procedure B.

WARRANTY INFORMATION
Covered under the terms of the BMW New Vehicle Limited Warranty.

Defect Code Refer to KSD

Labor Operation: Refer to KSD
Labor Allowance: Refer to KSD





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