Audio System - Speakers Pop On Vehicle Start Up

91 Popping noise through Bose speakers when starting vehicle (DTC 01042 and/or 02762)

91 10 37

2015760/8

June 24, 2010

Supersedes Technical Service Bulletin Group 91 number 10-27 dated May 11, 2010 for reasons listed below.





Affected Vehicles





Condition

^ When the ignition is turned on, a cracking or popping noise is heard through the BOSE sound system.

^ DTC 01042 (control module not coded) and/or DTC 002762 (system reset) must be stored in the amplifier Addressword 47 - Sound system.

^ Only the BOSE (PR-Nr. 8RY) sound system is affected by this condition.

Technical Background

The BOSE amplifier loses its coding.

Production Solution

New software in the BOSE amplifier control module (J525) resolved the problem.

Service

1. Follow all instructions in the attached TSB 2011732 00 Software Version Management (SVM), operating instructions.





2. Update the BOSE amplifier control module (J525) using the SVM action code as listed in the table above if necessary.

3. Recode addressword 47 - Sound system:

Coupe: Use Guided Fault Finding by running the function test plan for the DTCs or select the following: GFF >> Go to >> Function / Component Selection >> Body (Rep.Gr. 01; 27; 50-97) >> Electrical equipment (Rep.Gr. 01; 27; 90-97) >> 01 - On Board Diagnostic (OBD) capable systems >> 47 Sound system Bose | J525 >> 47 - Control module coding (RG.91)

Roadster: Use code 236126.

4. After recoding, re-check the software part number and software level in the BOSE amplifier control module (J525).





Warranty

Required Parts and Tools

Amplifiers are not allowed to be replaced for this condition and claims will be denied.

Additional Information

The following Technical Service Bulletin will be necessary to complete this procedure:

^ 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.


























Attachment - 2011732 00 Software Version Management (SVM), operating instructions