Instruments/Lighting - 'Bulb Out' Warning Displayed

SI B 63 01 10
Lights

January 2010
Technical Service

SUBJECT
"Bulb out" Warning in Check Control

MODEL
E63, E64 (6 Series) vehicles from 9/2007

SITUATION
The "Bulb out" warning is displayed in the Check Control. Fault code A8BE or A8BF for the BFD (Brake Force Display) is stored in the lamp module. No fault can be found with the BFD function which illuminates LEDs in the rear lamp. No incandescent bulbs are shown in the wiring diagram or the EPC (Electronic Parts Catalog).

CAUSE
Open circuit incandescent bulb or bulb circuit in the lower rear lamp (see attachment).

Although installed in the vehicle, this bulb is not used for US vehicles, but the circuit is still monitored with the Check Control. For non-US vehicle, the bulb is used as a rear fog lamp.

CORRECTION
Diagnose the circuit to identify the cause of the fault, and repair as appropriate.





WARRANTY INFORMATION

ATTACHMENTS





view PDF attachment B630110Attachment.