BMW ONBOARD COMPUTER Bedienungsanleitung PDF herunterladen (Seite 32)

E46 Driver Information

XENON BULB MONITORING

Xenon bulb function is monitored by the Lighting Control Module (LCM E38/E39 -- LSZ

E46). The bulbs are only “hot” monitored. Cold monitoring is not possible since the light-

ing control module is not in direct control of the xenon bulb. For this reason cold monitor-

ing for low beam headlights is encoded off in the lighting control module for Xenon head-

light equipped vehicle.

The lighting control module detects xenon bulb failure via a reduction in current flow to the

xenon control module. When a bulb fails, the xenon control module’s current consumption

drops to 60mA indicating unsuccessful xenon bulb illumination. The lighting control mod-

ule then posts the appropriate matrix display message or LED illumination in the Check

Control Pictogram display of the E46 and E39 Low Instrument Clusters.

XENON HEADLIGHT ASSEMBLY COMPONENTS (Example - E46)

Xenon Control Module

LWR Stepper Motor

Replaceable Lens Cover

Light Frame Assembly

Gasket Seal

Xenon Control

Module Cover

Rubber Cover Boot

Igniter

D-2S Xenon Bulb

(Low Beam)

H-7 Halogen Bulb

(High Beam)

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BMW ONBOARD COMPUTER Bedienungsanleitung Seite 32