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2010-2020 BMW 335i Technical Service Bulletin # 650211 Date: 110801

2010-2020 BMW 335i Technical Service Bulletin # 650211 Date: 110801

Audio Sys.- Intermittent No Audio Output After Start-Up

SI B65 02 11

Audio, Navigation, Monitors, Alarms, SRS

August 2011

Technical Service

This Service Information bulletin supersedes SI B65 02 11 dated May 2011.

[NEW] designates changes to this revision

SUBJECT

RAD2: Audio Is Intermittently Inoperative

MODEL

E82, E88 (1 Series)

E90, E91, E92, E93 (3 Series)

Vehicles produced between 09/2007 and 09/2009 with option 663 (Radio BMW Professional, RAD2) and option 676 (HIFI Loudspeaker System)

SITUATION

Intermittently there is no audio output after vehicle start-up. The radio is working.

^ The AM/FM radio station, CD or AUX is displayed correctly.

^ The backlight is on.

^ All buttons on the radio are working.

Switching the audio mode and/or the radio off/on or performing any other selection will not resume audio functionality.

Only after a sleep mode cycle will the radio operate correctly again.

CAUSE

2010-2020 BMW 335i Sedan (E90) L6-3.0L Turbo (N54) Page 123

Overvoltage spike during vehicle start-up

CORRECTION

Do not replace parts!

Connect a BMW approved battery charger and perform a vehicle test using the latest ISTA (Integrated Service Technical Application) diagnostic

software.

Diagnose any relevant faults to these control units that are stored by completing the test plans.

If no faults are stored in the radio: install an Unloader Relay. Refer to Attachment_A.

For a wiring schematic refer to Attachment_B.

Note:

Programming/encoding control units are not necessary to perform this repair.

PARTS INFORMATION

2010-2020 BMW 335i Sedan (E90) L6-3.0L Turbo (N54) Page 124

WARRANTY INFORMATION

ATTACHMENTS

2010-2020 BMW 335i Sedan (E90) L6-3.0L Turbo (N54) Page 125

2010-2020 BMW 335i Sedan (E90) L6-3.0L Turbo (N54) Page 126

2010-2020 BMW 335i Sedan (E90) L6-3.0L Turbo (N54) Page 127

B65 02 11 Attachment-A Procedure

2010-2020 BMW 335i Sedan (E90) L6-3.0L Turbo (N54) Page 128

Attachment-B Wiring Schematic
 |   | 
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