5 Series E60 525d (M57TU) SAL
switched ON. The indicator warning lights and symbols are illuminated by LEDs which are soldered into place.
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Liquid-crystal display
The liquid-crystal display is centred at the bottom between the two large analogue instruments. The liquid-crystal
display is divided into two zones. The top zone shows information such as the time and date and the outside
temperature. In addition, Check-Control messages appear by means of a symbol in the top area. The bottom
zone displays information concerning the on-board computer functions, for example, and the drive range
currently selected for the automatic transmission. The shift point indicator (E60, E61) is also in he lower area.
The LCD display is activated when terminal R is switched ON.
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Acoustic generator
Acoustic warnings are issued in support of the check-control messages. The instrument cluster controls these
warnings by means of the K-CAN. The headset (M-ASK, CHAMP, CCC) outputs acoustic warnings via the
loudspeakers.
An additional loudspeaker in the instrument cluster issues the following acoustic warnings:
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Flash
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Warning flash
System functions
The control unit of the instrument cluster incorporates certain functions over and above the display and indication
functions, namely:
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Lighting of the instrument cluster
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Dimming of the instrument cluster
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Undervoltage detection and overvoltage detection for the instrument cluster
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Heating and contrast for the liquid-crystal display
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On-board computer functions
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Check-Control messages
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Pre-drive check
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Outside temperature compensation
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Condition Based Service (CBS)
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Vehicle identification check
Lighting of the instrument cluster
The instrument cluster has an integral power supply unit. The power supply is connected to terminal 30. The
power supply provides the supply voltage for the instrument cluster.
This arrangement means that the lighting of the instrument cluster is independent of the onboard power supply.
If the onboard power supply is disrupted (voltage dips), the brightness cannot fluctuate.
LEDs in BMW orange provide backlighting for the liquid-crystal display, the pointers of the analogue instruments
and the scale rings.
The pointers and the scale rings are illuminated when the lights are switched ON (= function display).
The display itself is not backlit unless it contains a reading.
Dimming of the instrument cluster
The brightness of the liquid-crystal display and all indicator and warning lights is adapted to suit ambient lighting
conditions. This function is implemented by a phototransistor in the instrument cluster.
SBT Instrument cluster 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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