6
Driver Information
System Components
The instrument-cluster system comprises the following components:
• Needle instruments
• Indicator and warning lamps
• LC display
• Program and gear display for automatic gearbox and SMG Sequential Manual Gearbox
• Acoustic generator for outputting acoustic alarms
• Acoustic generator for outputting turn-signal flasher rate
• Two setting buttons, integrated in instrument cluster
• Connected components which serve to activate the displays/ indications in the instru-
ment cluster (see system overview/system schematic)
Display areas
The instrument cluster is divided
into the following display areas:
• Needle instruments
• Indicator and warning lamps
• LC display
• Program and gear display for
automatic gearbox and SMG
Sequential Manual Gearbox
Instrument-cluster lighting
The speedometer and the tachometer are illuminated by slit light between the dial face and
the graduated dial. The brightness of the dial-face, needle and display illumination (dim-
ming) is determined by the LSZ light switch center. The lights ON signal is transmitted from
the LSZ light switch center to the instrument cluster (via the K bus). The dimming signal is
also transmitted via the K bus. The LSZ evaluates the following input signals to control dim-
ming:
• Dimmer (knurl in light switch center)
• Photoelectric cell for ambient brightness (in light switch center)
Because the dimming signal is sent via the K bus, there is no need for terminal 58g.
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