CLS 550 (219.372) V8-5.5L (273.960) (2007)
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Instrument Cluster / Carrier: Description and Operation
GF54.30-P-0002TX Instrument Cluster (IC), Function
GF54.30-P-0002TX Instrument Cluster (IC), Function
Component Identification
The instrument cluster supplies driver information for all systems installed in the vehicle:
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Display of vehicle operating conditions
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Warning about critical operating conditions
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Central display for various systems
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Display for Active Service System PLUS (ASSYST PLUS)
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Trip computer (TRIP)
Integrated within the instrument cluster are:
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Multifunction display (A1p13)
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Various display instruments
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Warning and indicator lamps
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Warning buzzer (A1h1)
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Acoustic turn signal indicator (A1h2)
In addition, the instrument cluster transmits and receives signals through the Controller Area Network bus Class C (engine compartment) (CAN-C) and
the Controller Area Network bus Class B (interior) (CAN-B).
The instrument cluster is operated by:
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Left multifunction steering wheel pushbutton group (S110)
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Right multifunction steering wheel pushbutton group (S111)
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Instrument illumination rheostat and reset button (A1r1)
The airbag indicator and warning lamp (A1e15) is not actuated via CAN-B but via a discrete line.
Diagnosis takes place via STAR DIAGNOSIS.
Activating the instrument cluster
Due to the black screen technology, the details on the instrument cluster do not become visible until the instrument cluster is activated. When the
instrument cluster is activated, the displays show the current information, the illumination of the instrument cluster is switched on and the fuel reserve
warning lamp (A1e4) is actuated. The instrument cluster is activated by the circuit status "circuit 15g ON". When circuit 15g is switched off, the
instrument cluster remains active for a further 30 s. This run-on time may be extended by 2 min if active warnings occur.
With "Circuit 15g OFF", the instrument cluster is activated in the following circumstances:
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By pressing the instrument illumination rheostat and reset button for 30 s
