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180n
Integrated rear suspension
Rain sensor*
The control arms on the patented inte-
grated aluminum rear axle assembly are
not mounted directly on the body. They
are mounted elastically on a chassis
sub-frame which is joined in turn with
elasticity to the vehicle body. The
resulting double elastic suspension
system effectively absorbs the forces
resulting from bumps and road surface
irregularities.
The compliance rates of the integrated
rear axle assembly's control arm
mounts have been precisely calibrated
to help provide supplementary adjust-
ment in the tracking angle of the rear
wheels (programmed self-steer effect).
The ultimate result is enhanced safety
and control under all conditions.
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The rain sensor controls windshield
wiper operation, depending on how wet
the windshield is.
Infrared light is carried along the surface
of the windshield in an optical
conductor in such a manner that it is
reflected completely when the wind-
shield is dry. The quantity of reflected
light is measured.
If there is moisture on the glass, the
amount of light reflected is reduced
since the infrared light at the surface
of the windshield can escape. The
quantity of reflected light is thus a
means of gauging the degree of
wetness on the windshield.
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When the "Intermittent" wiper speed
position is selected, the wiper reacts
immediately if water is splashed onto
the windshield from vehicles traveling
ahead, for example. As a result, the
rain sensor provides a contribution to
driving safety and comfort.
Online Edition for Part No. 01 41 0 155 429 - © 09/00 BMW AG
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