Xenon Lamp, Right

Bi-xenon Light

Bi-xenon Light
At BMW, the bi-xenon light now replaces the conventional headlight with H1 lamp bulb.

An electric arc is produced in the D2S/R lamp.

The bi-xenon light system is of redundant design as for conventional headlights. Faults or damage in the area of one headlight do not result in malfunctions in the other headlight.

In the case of high beam, the halogen lamps are supplemented by an enlargement of the focus angle of the xenon driving light. To create the high beam distribution, a mechanical, electromagnetic plate is folded back by an actuator drive. With the driving light switched on, this plate covers part of the reflector, reducing the lighting intensity and/or the focus angle.

MINI: For the MINI, the headlight has a conventional design. No xenon high beam is cut in by the xenon control module. In the case of halogen high beam, the xenon driving lights remain active.

The headlight flasher still uses the halogen bulbs.

The bi-xenon light does not have self-diagnosis capabilities. In automatically running test modules, the functionality of the components is tested.

In the event of a fault, fault codes are stored in the fault memory.

Status inquiries on the individual functions can be activated in the control-module functions.

NOTE: if during the vehicle diagnosis there is a terminal switch from terminal 15 to terminal r, a quick individual test of the bi-xenon control module must be performed.

Components

CAUTION: Relevant safety and accident prevention regulations must be observed when conducting all tests and work on the xenon light system. The xenon light headlight system carries dangerous high voltages.

Bi-xenon headlight
Bi-xenon headlights consist of
- headlights with D2S/R bulbs (bulb with a xenon gas charge)
- an electronic control facility (ignition device and control module)

Electrical control facility for bi-xenon headlights
The electronic control facilities consist of
- bi-xenon control module and
- bi-xenon ignition device. The ignition unit generates the high voltage necessary for igniting the electrical arc in the lamp.