BMW serie 3 sedan 2000 Manual Do Utilizador
166
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Rain sensor
*
Depending on the degree of wetness
on the windshield, the rain sensor con-
trols the operation of the windshield
wipers.
on the windshield, the rain sensor con-
trols the operation of the windshield
wipers.
Infrared light is carried along the sur-
face of the windshield in an optical con-
ductor in such a manner that it is re-
flected completely when the windshield
is dry. The quantity of reflected light is
measured.
face of the windshield in an optical con-
ductor in such a manner that it is re-
flected completely when the windshield
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 quan-
tity of reflected light is thus a means of
gauging the degree of wetness on the
windshield.
amount of light reflected is reduced
since the infrared light at the surface of
the windshield can escape. The quan-
tity of reflected light is thus a means of
gauging the degree of wetness on the
windshield.
390de133
When the system is set to the "Intermit-
tent" wiper speed, the wipers react im-
mediately – if water is splashed onto
the windshield by vehicles traveling
ahead of you, for example. As a result,
the rain sensor provides a contribution
to driving safety and comfort.
tent" wiper speed, the wipers react im-
mediately – if water is splashed onto
the windshield by vehicles traveling
ahead of you, for example. As a result,
the rain sensor provides a contribution
to driving safety and comfort.
Online Edition for Part No. 01 41 0 155 024 - © 07/99 BMW AG