5 Series E60 525d (M57TU) SAL
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KOMBI: Instrument cluster
The instrument cluster transmits the following signals to the head-up display through the K-CAN:
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Vehicle road speed
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Check-Control messages
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LM: Light module
> E60, E61, E63, E64
The light module controls and monitors all vehicle lights. Information is received and transmitted via the K-CAN
data bus (body controller-area network).
The light module provides the terminal 58g signal via the K-CAN. The light module also transmits the dimmer
signal to the head-up display.
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RLS: Rain-light sensor
Vehicles with the "head-up display" optional extra (option 610) require a special rain/light sensor.
Modifications compared to the previous rain/light sensor:
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Viewing angle
On the previous rain/light sensor, the viewing angle has been directed more upwards (towards the sky).
With the rain/light sensor for the head-up display, the viewing angle is directed more towards the virtual
image (from the perspective of the rain/light sensor, downwards).
The rain/light sensor measures the ambient light conditions in the background of the virtual image. Thus the
display brightness is optimally adjusted to the ambient brightness of the virtual image.
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Optical element
The optical element is adjusted to the new viewing angle.
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Evaluation electronics
The evaluation electronics have also been modified (signal evaluation and software).
As before, the signal is available via the K-CAN.
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SGM: Safety and gateway module up to 09/2005
> E60, E61, E63, E64
The SGM is replaced by the KGM as from 09/2006.
The SGM is the data interface (gateway) between the bus systems that are important for the head-up display:
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Body CAN (K-CAN)
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Byteflight
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Powertrain CAN (PT-CAN)
The diagnosis wire is connected to the SGM.
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SZL: Steering column switch cluster
The steering column switch cluster (SZL) sends the signals from the Active Cruise Control (ACC) or the Cruise
Control (FGR) to the head-up display.
The settings of the ACC or FGR are selected using the steering column switch.
System functions
The head-up display comprises the following functions:
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Switch-on response
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Projection of virtual image in front of the vehicle
SBT Head-up display E60, E61, E63, E64, E70
BMW AG - TIS
12.02.2013 16:10
Issue status (12/2007) Valid only until next DVD is issued
Copyright
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