check engine MERCEDES-BENZ C230 KOMPRESSOR COUPE 2002 CL203 Owner's Manual

3 ContentsMaintenance ................................... 227
Tele Aid............................................ 228
Catalytic converter......................... 238
Emission control ............................ 239
Starter switch ................................. 240
Starting and turning off
the engine .................................. 242
Manual transmission .................... 244
Automatic transmission................ 246
Parking brake ................................. 256
Driving instructions ...................... 257
Drive sensibly – Save Fuel........ 257
Drinking and driving................. 257
Pedals ........................................... 257
Power assistance ........................ 258
Brakes .......................................... 258
Driving off ................................... 259
Parking ........................................ 260
Tires ............................................. 261
Snow chains ................................ 263
Winter driving instructions ...... 264
Deep water .................................. 266
Passenger compartment............ 267
Traveling abroad......................... 267Cruise control ................................ 268
Brake assist system (BAS)............ 271
Antilock brake system (ABS)....... 272
Electronic stability program
(ESP) ........................................... 274
What you should know
at the gas station ...................... 278
Check regularly and before
a long trip .................................. 280
Instrument cluster displayMalfunction and indicator
lamps in the instrument
cluster......................................... 282
On-board diagnostic system......... 283
Check engine malfunction
indicator lamp ............................ 283
Brake warning lamp .................. 284
Supplemental restraint
system (SRS) indicator lamp .... 285
Fuel reserve warning ................ 286
ABS malfunction indicator
lamp ............................................. 287Electronic stability program
(ESP) — warning lamp ............... 288
Seat belt nonusage warning
lamp ............................................288
Malfunction and indicator
lamp in the center console ...... 289
AIRBAG OFF indicator lamp..... 289
Malfunction and warning
messages in the
multifunction display ............... 290
DISPLAY DEFECTIVE ................ 291
BATTERY / ALTERNATOR........ 292
ANTILOCK BRAKE SYSTEM..... 293
BRAKE ASSIST ........................... 293
BRAKE PAD WEAR .................... 294
BRAKE FLUID ............................. 294
PARKING BRAKE ....................... 295
SEAT BELT SYSTEM................... 295
ELEC. STABIL. PROG.
(Electronic stability program) .. 296
COOLANT (coolant level) .......... 297
COOLANT
(coolant temperature) ................ 298
ENGINE OIL LEVEL ................... 299

30 Central locking system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Start lock-out
Important!
Removing the electronic key from the starter switch
activates the start lock-out. The engine cannot be
started.
Inserting the electronic key in the starter switch
deactivates the start lock-out.
Note:
In case the engine cannot be started (vehicle’s battery is
in order), the system is not operational. Contact an
authorized Mercedes-Benz Center or call 1-800-FOR-
MERCedes (in the USA), or 1-800-387-0100 (in Canada).General notes on the central locking system
If the electronic key is inserted in the starter switch, the
vehicle cannot be locked or unlocked with the remote
control.
If the vehicle cannot be locked or unlocked:
•Aim transmitter eye at a receiver of either door
handle. Check the batteries of the electronic key, see
page 351, or synchronize the electronic key, see
page 353.
•Use the mechanical key to unlock the vehicle. To
start engine, insert the electronic key in the starter
switch. There could be a slight delay until the
electronic key can be turned in the starter switch.
Important!
When unlocking the driver’s door with the mechanical
key, the exterior lamps will flash and the alarm will
sound.
To cancel the alarm, insert the electronic key in the
starter switch or press buttonŒ or‹ on the
electronic key.

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.

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

141 Engine oil level indicator
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Engine oil level indicator
To check the engine oil level, park vehicle on level
ground, with engine at normal operational temperature.
Check oil level approximately 5 minutes after turning
off the engine, allowing for the oil to return to the oil
pan.
The message “OBSERVE WAITING PERIOD” will be
displayed if the required waiting period has not been
observed after turning off the engine:
•with engine at operational temperature
approximately 5 minutes.•with engine not at operational temperature up to
approximately 30 minutes.
The engine oil level check can be repeated after a short
time.
Turn the electronic key in starter switch to position 2.
To call up the trip odometer and main odometer, press
button è or ÿ on the multifunction steering
wheel until the display appears. See page 106.
With the multifunction display showing the trip
odometer and main odometer, press button j or
k on the multifunction steering wheel repeatedly
until the “MEASUREMENT CORRECT ONLY IF VEH.
LEVEL” engine oil level indicator appears. This indicator
is only a reminder. Measurement can be cancelled by
pressing button j or k if the vehicle is not
parked on level ground. An incorrect reading will be
recorded if you do not cancel the measurement. Move
the vehicle to level ground and measure again.
The electronic key in starter switch is not in position 2 if
the “ENGINE OIL LEVEL – SWITCH ON IGNITION”
message appears.
The “ENGINE OIL LEVEL – MEASUREMENT IN
PROCESS” message is displayed after approximately
3seconds.
P54.30-4676-26

142 Engine oil level indicator
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
One of the following messages will subsequently appear
on the indicator:
“ENGINE OIL LEVEL – O.K.”
No oil needs to be added.
“ENGINE OIL LEVEL – ADD 1.0 QUART”
(Canada: 1.0 L)
“ENGINE OIL LEVEL – ADD 1.5 QUART”
(Canada: 1.5 L)
“ENGINE OIL LEVEL – ADD 2.0 QUART”
(Canada: 2.0 L)
See “Adding engine oil level”, on page 318 for
instructions on adding engine oil.
“ENGINE OIL LEVEL – REDUCE OIL LEVEL”
Do not overfill the engine.
Excessive oil must be siphoned or drained off. It could
cause damage to the engine and catalytic converter not
covered by the Mercedes-Benz Limited Warranty.The “MEASURING NOT POSSIBLE” message will be
displayed if a proper oil level check cannot be
performed. The engine oil level check can be repeated
after a short while.
Notes:
See malfunction and warning messages on page 290
and page 299 if an engine oil level indicator appears on
the multifunction display when the engine is running.
The engine oil level cannot be checked while the engine
is running. The “ENGINE OIL LEVEL – NOT WHEN
ENGINE ON” message will appear.
Engine oil consumption
Engine oil consumption checks should only be made
after the break-in period. During the break-in period,
higher oil consumption may be noticed and is normal.
Frequent driving at high engine speeds results in
increased consumption.

155 Climate control
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Climate control
The system is always at operational readiness, except
when manually switched off.
The climate control only operates with the engine
running.
The temperature selector should be left at the desired
temperature setting. The temperature selected is
reached as quickly as possible.
The system will not heat or cool any quicker by setting a
higher or lower temperature.
The desired interior temperature can be selected
separately for the left and right side of the passenger
compartment. Adjust the temperature settings in small
increments.
The climate control removes considerable moisture from
the air during operation in the cooling mode. It is
normal for water to drip on the ground through ducts in
the underbody.
The air conditioning will not engage (no cooling) if the
economy mode S is selected, see page 159. Notes:
Do not obstruct the air flow by placing objects on the air
flow-through exhaust slots below the rear window.
Also keep the air intake grill in front of the windshield
free of snow and debris.
The storage compartment between the front seats can be
ventilated. See page 171 for notes on ventilating the
storage space under the armrest in the center console.
The air conditioner switches itself off for its own
protection if refrigerant is lost. No cooling will then take
place. Economy mode S cannot be switched off. Have
the air conditioner checked by a Mercedes-Benz Center
should this happen.
If the vehicle interior has been heated by direct sunlight
and is very hot, ventilate the interior (open door or
windows for a short period) before driving off.
Dust filter
Nearly all dust particles and pollen are filtered out
before outside air enters the passenger compartment
through the air distribution system.

225 Contents - Driving
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
DrivingControl and operation of
radio transmitters ..................... 226
The first 1 000 miles
(1 500 km) ................................. 227
Maintenance ................................... 227
Tele Aid............................................ 228
Catalytic converter......................... 238
Emission control ............................ 239
Starter switch ................................. 240
Starting and turning off
the engine .................................. 242
Manual transmission .................... 244
Automatic transmission................ 246Parking brake ................................ 256
Driving instructions...................... 257
Drive sensibly – Save Fuel ....... 257
Drinking and driving ................ 257
Pedals .......................................... 257
Power assistance........................ 258
Brakes .......................................... 258
Driving off................................... 259
Parking ........................................ 260
Tires ............................................. 261
Snow chains................................ 263
Winter driving instructions ..... 264
Deep water .................................. 266
Passenger compartment ........... 267
Traveling abroad ........................ 267Cruise control ................................. 268
Brake assist system (BAS) ............ 271
Antilock brake system (ABS) ....... 272
Electronic stability program
(ESP) ........................................... 274
What you should know
at the gas station ....................... 278
Check regularly and before
a long trip ................................... 280

242 Starting and turning off the engine
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Starting and turning off the engine
Before starting
Ensure that parking brake is engaged and that selector
lever is in position “P” or “N” (gearshift lever in
neutral). Turn electronic key in starter switch to
position 2.
Starting
Vehicles with automatic transmission:
Do not depress accelerator. Briefly turn electronic key in
starter switch clockwise to the stop and release. The
starter will engage until the engine is running.
If engine will not run, and the starting procedure stops,
turn electronic key completely to the left and repeat
starting the engine.
After several unsuccessful attempts, have the system
checked at the nearest authorized Mercedes-Benz
Center.Vehicles with manual transmission:
Do not depress accelerator. Fully depress clutch pedal,
otherwise the engine cannot be started due to the
integrated safety interlock.
Turn electronic key in starter switch clockwise to the
stop. Release only when the engine is firing regularly.

255 Automatic transmission
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Emergency operation (Limp home mode)
If vehicle acceleration worsens or the transmission no
longer shifts, the transmission is most likely operating
in Limp Home Mode which engages when there is a
malfunction of the transmission. This condition may be
accompanied by the “CHECK ENGINE” malfunction
indicator lamp in the instrument cluster coming on.
In this mode only the 2nd gear or reverse gear can be
activated.To engage 2nd gear or reverse:
1. S to p t h e ve h i c l e .
2. Move selector lever to position “P”.
3. Turn off the engine.
4. Wait approximately 10 seconds.
5. Restart the engine.
6. Move selector lever to position “D” (for 2nd gear), or
move selector lever to position “R” (for reverse gear).
Have the transmission checked at your authorized
Mercedes-Benz Center as soon as possible.