BMW SERIE 3 CONVERTIBLE 2000 Bedienungshandbuch Seite 175

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175n
Index Data Technology Repairs Car care Controls Overview
Interior rearview mirror with automatic dimmer*
The interior rearview mirror with auto-
matic dimming feature reduces glare by
adapting the intensity of the reflected
images to correspond to levels of light
registered by the unit's sensors. The
mirror reverts to its undimmed setting
as soon as the light source disappears.
One light sensor is mounted on the front
of the mirror housing. This sensor, the
one that is directed forward, measures
light intensity in the area ahead of the
vehicle. The second sensor is inte-
grated within the mirror's glass. The
electronic control system compares the
light intensity from front and rear. The
difference provides the basic parameter
used to modulate an electrical current
and induce chemical changes in a semi-
solid layer incorporated in the lens.
46cus036
The semisolid reacts chemically to this
electrical current, dimming the mirror
through an infinitely-variable range
(electrochromic technology).
As a result, it is no longer necessary to
dim the mirror manually, and the driver
can concentrate completely on traffic
conditions.
Online Edition for Part No. 01 41 0 155 048 - © 01/00 BMW AG
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