Xenon Lamps - BMW M3 2001 Manual

Xenon lamps

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The xenon lamp provides forward illu-
mination with significantly more bright-
ness and uniformity than the traditional
halogen lamp.
In a xenon lamp, an electric arc
replaces the filament in order to
generate intense illumination. A gas
mixture in a quartz glass tube with
metal vapor is ignited by a high electric
voltage. The arc that is generated is
then sustained by a lower voltage.
When the lamp is turned, on there is a
brief warm-up period. Maximum bright-
ness is attained in approx. 15 seconds.
Xenon lamps improve the driver's visi-
bility and orientation to the road, espe-
cially in adverse weather conditions
and driving situations (driving at night in
heavy rain or through road repair areas
where there are no lane markers, for
instance).
Vehicles with xenon lamps are
equipped with automatic headlamp
range control. As a result, the highway
is always optimally lighted, regardless
of load conditions, and drivers in
oncoming traffic are not blinded.
Xenon lamps make a significant contri-
bution to highway safety since other
highway users, bicyclists and motorcy-
clists in the right lane, and pedestrians
are more easily detected.
Online Edition for Part No. 01 41 0 155 433 - © 08/00 BMW AG
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