2002 MERCEDES-BENZ C230 KOMPRESSOR COUPE engine

73 Restraint systems
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index The operational readiness of the airbag system is
verified by the indicator lamp “SRS” in the instrument
cluster when turning the electronic key in starter switch
to position 1. When turning the electronic key in starter
switch to position 2 the indicator lamp “SRS” in the
instrument cluster comes on. If no fault is detected, the
lamp will go out when the engine is running. After the
lamp goes out, the system continues to monitor the
components and circuitry of the airbag system and will
indicate a malfunction by coming on again. If the lamp
does not come on at all or if it fails to extinguish or if it
comes on thereafter, a malfunction in the system has
been detected.
The following system components are monitored or
undergo a self-check: crash-sensor(s), airbag ignition
circuits, front seat belt buckles, emergency tensioning
retractors, seat sensor.
Have the system checked at your authorized
Mercedes-Benz Center immediately.
In the operational mode, after the indicator lamp has
gone out following the initial check, interruptions or
short circuits in the airbag ignition circuit and in the
driver and front passenger seat belt buckle harnesses,
and low voltage in the entire system are detected and
indicated.Note:
See page 285 for information on the supplemental
restraint system (SRS) indicator lamp.
Wa r n i n g !
In the event a malfunction of the “SRS” is indicated
as outlined above, the “SRS” may not be
operational. For your safety, we strongly
recommend that you visit an authorized
Mercedes-Benz Center immediately to have the
system checked; otherwise the “SRS” may not be
activated when needed in an accident, which could
result in serious or fatal injury, or it might deploy
unexpectedly and unnecessarily which could also
result in injury.

97 Instrument cluster
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index 1Knob for instrument cluster illumination,
seepage99
Reset knob for trip odometer, see page 101 and
individual settings, see page 121
2Tachometer
3Speedometer
4Left turn signal indicator lamp, see combination
switch on page 148
5Electronic stability program (ESP) warning lamp,
see page 288
6Indicator lamp without function. It illuminates with
the electronic key in starter switch position 2. It
should go out when the engine is running.
7Right turn signal indicator lamp, see combination
switch on page 148
8Indicator lamp without function. It illuminates with
the electronic key in starter switch position 2. It
should go out when the engine is running.9Multifunction display, see page 102
Malfunction and warning messages in the
multifunction display, see page 290
10Trip odometer, see page 101 and 106
11Main odometer, see page 106
12Display for program mode and gear range
indicators, page 249
13Malfunction/warning message memory,
seepage119
14Outside temperature indicator, see page 100
15Digital clock
To set the time, see individual settings on page 121
16Fuel gauge with reserve warning lamp, see page 286

98 Instrument cluster
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Indicator lamps in the instrument cluster
High beam, see page 148
ABS malfunction, see page 287
Brake fluid low (except Canada).
Parking brake engaged, see page 284
ESP. Adjust driving to road condition,
see page 288
Fasten seat belts, see page 288
SRS malfunction, see page 285Engine malfunction indicator lamp. If the
malfunction indicator lamp comes on when
the engine is running, it indicates a
malfunction of the fuel management system,
emission control system, systems which
impact emissions, or the fuel cap is not
closed tight. In all cases, we recommend that
you have the malfunction checked as soon as
possible, see page 283
ABS

100 Instrument cluster
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Outside temperature indicator (14)
The temperature sensor is located in the front bumper
area. Due to its location, the sensor can be affected by
road or engine heat during idling or slow driving. This
means that the accuracy of the displayed temperature
can only be verified by comparison to a thermometer
placed next to the sensor, not by comparison to external
displays (e.g. bank signs etc.).Adaption to ambient temperature takes place in steps
and depends on the prevailing driving conditions (stop-
and-go or moderate, constant driving) and amount of
temperature change.
Note:
The unit for the temperature indicator display can be set
in the individual setting menu “INSTRUMENT
CLUSTER” – “TEMP. INDICATOR” on page 121.
Wa r n i n g !
The outside temperature indicator is not designed
to serve as an Ice-Warning Device and is therefore
unsuitable for that purpose. Indicated
temperatures just above the freezing point do not
guarantee that the road surface is free of ice.

101 Instrument cluster
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Trip odometer (10)
To reset to “0” miles / km:
Activate the instrument cluster if it is not already
activated, see page 99.
Press button è or ÿ on the multifunction
steering wheel repeatedly until the trip odometer
appears if it is not displayed. See page 106.
Press and hold button (1) on the instrument cluster, see
page 99.Tachometer (2)
The red marking on the tachometer denotes excessive
engine speed.
Avoid this engine speed, as it may result in serious
engine damage that is not covered by the
Mercedes-Benz Limited Warranty.
To help protect the engine, the fuel supply is interrupted
if the engine is operated within the red marking.

103 Multifunction steering wheel, multifunction display
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Depending on your vehicle’s equipment, you may use
the buttons on the multifunction steering wheel to call
up, control and set the following systems in the
multifunction display:
1Trip odometer and main odometer, see page 101 and
page 106
Flexible service system (FSS), see page 138
Vehicle speed, see page 106
Coolant temperature gauge, see page 137
Engine oil level indicator, see page 141
2Audio systems, see page 108
Radio, seepage108
CD player, see page 109
Cassette player, see page 1103Navigation system, see page 116
4Malfunction message memory, see page 119
5Individual settings, see page 121
6Trip computer, see page 117
After start
After reset
Fuel tank content
7Telephone, see page 111
Press the è or ÿ button repeatedly until the
required system is displayed.
The display advances by one system each time the
button is pressed.
You may call up additional displays within some of these
categories by pressing the j or k button.

107 Multifunction steering wheel, multifunction display
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index 1Trip odometer and main odometer
See page 101 for instructions on resetting the trip
odometer.
2Coolant temperature gauge, see page 137
3Vehicle speed if “SPEED DISP.” is selected in the
individual setting menu “INSTRUMENT CLUSTER” -
“SELECT DISPLAY”, refer to page 124
Outside temperature if “OUTSIDE TEMPERATURE”
is selected in the individual setting menu
“INSTRUMENT CLUSTER” - “SELECT DISPLAY”, see
page 124
4FSS (Flexible service system), see page 138
5Engine oil level indicator, see page 141Press è or ÿ button repeatedly until the trip
odometer and main odometer display (1) appears.
Press the j or k button repeatedly until the
required display (2, 3, 4, 5, 1) appears.
Pressing the è or ÿ button displays the next or
previous system.

137 Coolant temperature gauge
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Coolant temperature gauge
Turn the electronic key in starter switch to position 1
or 2.
Call up the trip odometer and main odometer by
pressing button è or ÿ on the multifunction
steering wheel. See page 106.
Press button j or k until the coolant
temperature gauge appears.During severe operating conditions and stop-and-go city
traffic, the coolant temperature may rise close to 120
°C.
The engine should not be operated with the coolant
temperature above 120
°C. Doing so may cause serious
engine damage which is not covered by the
Mercedes-Benz Limited Warranty.
Note:
Excessive coolant temperatures trigger a warning in the
multifunction display. See page 298.
P54.30-4674-26
Wa r n i n g !
• Driving when your engine is badly overheated
can cause some fluids which may have leaked
into the engine compartment to catch fire. You
could be seriously burned.• Steam from an overheated engine can cause
serious burns and can occur just by opening
the engine hood. Stay away from the engine if
you see or hear steam coming from it.Turn off the engine, get out of the vehicle and do
not stand near the vehicle until it cools down.