5 Series E61 523i (N52) TOUR
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Reverse gear switch
The main-beam headlights are not switched on if reverse gear is engaged.
In a manual-shift car, the reverse gear switch supplies the "reverse gear engaged" information.
The reverse gear switch sends this information to the light module.
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Selector lever position switch
The main-beam headlights are not switched on if reverse gear is engaged.
In a car fitted with electronic transmission control (EGS), the selector lever position switch supplies the "reverse
gear engaged" information. The selector lever position switch sends this information to the EGS control unit. The
EGS control unit sends this information to the light module or footwell module.
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Selector angle sensor and shift travel sensor
> E60, E61, E63, E64, E65, E66
The main-beam headlights are not switched on if reverse gear is engaged.
In a car fitted with sequential manual transmission (SMG), the selector angle sensor and the shift travel sensor
supply the "reverse gear engaged" information. The selector angle sensor and the shift travel sensor send the
information to the SMG control unit. The SMG control unit sends the information to the light module.
The following control units are involved in the main-beam assistant system:
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FLA: Main-beam assistant
The FLA control unit analyses the images from the image sensor. The FLA control unit receives information on
road speed and yaw rate from the DSC control unit.
The FLA control unit sends a switch-on recommendation or a switch-off recommendation for the main-beam
headlights to the light module. The recommendation depends on the traffic situation, the ambient light, and the
car's road speed.
The FLA control unit is connected to the K-CAN.
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LM: Light module
> E60, E61, E63, E64, E65, E66
The light module receives various input variables for the main-beam headlights:
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Switch-on or switch-off recommendation from the FLA control unit
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Switch position of the light switch
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Switch position of the direction indicator/mean-beam switch
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Information from the reverse gear switch or the selector lever position switch or the selection angle and shift
travel sensor
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Information from the rain-light sensor, as to whether the dipped headlights have to be switched on
On the basis of the input variables, the light module decides whether the main-beam headlights should be
switched on or off.
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The light module actuates the bi-xenon headlights.
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The light module actuates the FLA indicator light in the instrument cluster.
A Check-Control symbol appears if the main-beam assistant fails.
The light module is connected to the K-CAN.
> Light module E60, E61, E63, E64 [for further information, please refer to SI
SBT Main-beam assistant E60, E61, E63, E64, E65, E66, E70, E90, E91, E92, E93
BMW AG - TIS
06.02.2013 01:13
Issue status (12/2007) Valid only until next DVD is issued
Copyright
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