Audio System - Radio Inoperative After a Hot Soak
SI B65 11 03Sound System, Cruise, Alarms, Monitors
June 2003
Service Engineering
SUBJECT
AVT (Antenna Tuner) Is Inoperative At High Ambient Temperatures
MODEL
B65, E66 (7 Series), vehicles from start of production up to 05/2003
SITUATION
After the vehicle has been parked outside for an extended time in the hot sun, the MOST-bus and audio in C][) mode is working, only the radio is inoperative. The radio operation is restored once the interior of the vehicle is cooled down.
No faults are stored in the fault memories of the Control Units.
CAUSE
Hardware problem in the AVT (antenna tuner).
CORRECTION
On a customer complaint basis only, replace the AVT (antenna tuner).
The new antenna tuner must have HW 4.6 or higher.
For repair instructions refer to RA 65 20 200, Removing and installing (replacing) antenna tuner.
Refer to SIB09 05 01 (Coding, Individualization and Programming) for any necessary coding and programming. Note that CIP Will automatically reprogram all programmable control units that do not have the latest software.
PARTS INFORMATION
WARRANTY INFORMATION
Covered under the terms of the BMW New Vehicle Limited Warranty.
Note:
The following explanations will spell out the correct use of the work times.
Main Work:
Use this labor operation number when the only repair performed is the listed warranty repair.
OR
+Associated Work:
Use this labor operation number when other repairs or services are performed along with the listed warranty repair.
Under no circumstances should both labor operation numbers be claimed.
Attempts to claim both times will result in an unnecessary delay in claim processing and payment.