2003 MERCEDES-BENZ C CLASS COUPE catalytic converter

Contents
Air recirculation mode .................. 154
Charcoal filter .............................. 156
Rear window defroster ................. 156
Air conditioning ............................ 157
Residual heat and ventilation* ..... 158
Rear passenger compartment
adjustable air vents ...................... 158
Audio system ..................................... 159 Audio and telephone, operation ... 159
Operating safety ........................... 159
Operating and display elements ... 160
Button and soft key operation ...... 162
Operation ..................................... 162
Radio mode .................................. 165
Cassette mode ............................. 168
CD changer* operating mode ...... 172
Telephone* operation .................. 176
Power windows .................................. 182 Opening and closing the windows 182
Synchronizing power windows ..... 184
Panorama sliding/pop-up roof* ......... 185 Opening and closing the
sunshades for the panorama
sliding/pop-up roof ...................... 185
Opening and closing the panorama
sliding/pop-up roof ...................... 186 Synchronizing the panorama
sliding / pop-up roof ..................... 188
Driving systems ................................. 189 Cruise control .............................. 189
Loading .............................................. 192 Roof rack* ................................... 192
Luggage cover ............................. 192
Split folding rear bench seat ......... 192
Loading instructions .................... 194
Useful features .................................. 195 Interior storage spaces ................ 195
Ashtrays ....................................... 198
Cigarette lighter ........................... 199
Telephone* ................................... 200
Tele Aid* ...................................... 201
Garage door opener ...................... 209
Operation ......................................... 213
The first 1000 miles (1500km) .......... 214
Driving instructions ........................... 215 Drive sensibly – save fuel ............. 215
Drinking and driving ..................... 215
Pedals .......................................... 215
Power assistance .......................... 216
Brakes........................................... 216 Driving off .....................................217
Parking .........................................217
Tires ..............................................218
Hydroplaning ................................ 219
Tire traction ..................................219
Tire speed rating ...........................219
Winter driving instructions ............220
Standing water .............................221
Passenger compartment ...............221
Driving abroad ..............................221
Control and operation of radio
transmitter ....................................222
Catalytic converter .......................222
Emission control ...........................223
Coolant temperature ....................223
At the gas station ...............................224 Check regularly and before a
long trip ........................................225
Engine compartment .......................... 226 Hood .............................................226
Engine oil ......................................227
Transmission fluid level ................229
Coolant level .................................229
Battery ..........................................231
Windshield washer system and
headlamp cleaning system ...........232

46 Getting startedDrivingParking brake 1 Release handle
2 Parking brake

Release the parking brake by pulling on
handle 1.
The indicator lamp
;
(USA only) or
3
(Canada only) in the instrument
cluster goes out.
Driving

Depress the brake pedal.

Move selector lever to position D or R
(manual transmission: first or reverse
gear).

Release the brake pedal.

Carefully depress the accelerator
pedal.
Once the vehicle is in motion, the auto-
matic central locking system engages
and the locking knobs drop down. After a cold start, the automatic transmis-
sion engages at a higher revolution. This al-
lows the catalytic converter to reach its
operating temperature earlier.
Warning!
G
When leaving the vehicle, always remove the
key from the starter switch and lock the ve-
hicle. Do not leave children unattended in
the vehicle, or with access to an unlocked
vehicle. Children could release the parking
brake, which could result in an accident
and/or serious injury.
iYou can open a locked door from the
inside. Open door only when conditions
are safe to do so.
!If you hear a warning signal when driv-
ing off, you have forgotten to release
the parking brake.
Release the parking brake.!Simultaneously depressing the acceler-
ator pedal and applying the brake re-
duces engine performance and causes
premature brake and drivetrain wear.iVehicles with automatic transmission:
Wait for the gear selection process to
complete before setting the vehicle in
motion.

50 Getting startedDrivingProblems while driving
The engine runs erratically and misfires

An ignition cable may be damaged.


The engine electronics may not be op-
erating properly.


Unburned gasoline may have entered
the catalytic converter and damaged it.

Give very little gas.

Have the problem repaired by an au-
thorized Mercedes-Benz Center as
soon as possible.The coolant temperature is over 248°F
(120°C)
The coolant is too hot and is no longer
cooling the engine.

Stop the vehicle as soon as possible
and turn off the engine. Allow engine
and coolant to cool.

Check the coolant level and add cool-
ant if necessary (
page 229).
In case of accident
If the vehicle is leaking gasoline:

Do not start the engine under any cir-
cumstances.

Notify local fire and/or police authori-
ties.
If the extent of the damage cannot be de-
termined:

Notify an authorized Mercedes-Benz
Center.
If no damage can be determined on the


major assemblies


fuel system


engine mount

Start the engine in the usual manner.

132 Controls in detailAutomatic transmission*
Automatic transmission*Information for driving with an automatic
transmission is found in the “Getting start-
ed” section (
page 41).
Your transmission adapts its gear shifting
process to your individual driving style by
continually adjusting the shift points up or
down. These shift point adjustments are
performed based on current operating and
driving conditions.
If the operating conditions change the au-
tomatic transmission reacts by adjusting
its gear shift program. The automatic transmission selects indi-
vidual gears automatically, depending on


the selector lever position
D with gear
ranges 4, 3 , 2 , 1 (
page 134)


the selected shift program ( W/S)
(page 136)


the position of the accelerator pedal
(page 137)


the vehicle speed
The current selector lever position and
shift program ( W/S) appear in the multi-
function display (
page 22).
An additional indication of the current se-
lector lever position can be found on the
cover of the shifting gate. The indicators
come on when you activate a switch (e.g.
unlocking the vehicle or opening a door)
and go out after approximately
15 minutes. When the selector lever is in position
D,
you can influence transmission shifting by


limiting the gear range


changing gears yourself
iDuring the brief warm-up the transmis-
sion upshifting is delayed. This allows
the catalytic converter to heat up more
quickly to operating temperatures.
Warning!
G
It is dangerous to shift the selector lever out
of P or N if the engine speed is higher than
idle speed. If your foot is not firmly on the
brake pedal, the vehicle could accelerate
quickly forward or reverse. You could lose
control of the vehicle and hit someone or
something. Only shift into gear when the en-
gine is idling normally and when your right
foot is firmly on the brake pedal.

222 OperationDriving instructionsControl and operation of radio trans-mitter
COMAND*, radio and telephone*Telephones and two-way radios
Radio transmitters, such as a portable tele-
phone or a citizens band unit should only
be used inside the vehicle if they are con-
nected to an antenna that is installed on
the outside of the vehicle.
Refer to the radio transmitter operation in-
structions regarding use of an external an-
tenna.
Catalytic converter
Your Mercedes-Benz is equipped with
monolithic type catalytic converters, an
important element in conjunction with the
oxygen sensors to achieve substantial con-
trol of the pollutants in the exhaust emis-
sions. Keep your vehicle in proper
operating condition by following our rec-
ommended maintenance instructions as
outlined in your Service Booklet.
Warning!
G
Please do not forget that your primary re-
sponsibility is to drive the vehicle safely.
Only operate the COMAND (Cockpit Man-
agement and Data System), radio or tele-
phone
1 if road, weather and traffic
conditions permit.
Bear in mind that at a speed of just 30 mph
(approximately 50 km / h), your vehicle is
covering a distance of approximately
44 feet (approximately 13.5 m) every sec-
ond.
1Observe all legal requirements
Warning!
G
Never operate radio transmitters equipped
with a built-in or attached antenna (i.e. with-
out being connected to an external antenna)
from inside the vehicle while the engine is
running. Doing so could lead to a malfunc-
tion of the vehicle’s electronic system, pos-
sibly resulting in an accident and/or
personal injury.
!To prevent damage to the catalytic con-
verters, use only premium unleaded
gasoline in this vehicle.
Any noticeable irregularities in engine
operation should be repaired promptly.
Otherwise, excessive unburned fuel
may reach the catalytic converter,
causing it to overheat and start a fire.

228 OperationEngine compartmentYou can check the engine oil level on the
multifunction display.
Turn the key in the starter switch to
position2.
The standard display showing the trip
odometer and the main odometer
(
page 105) should appear in the multi-
function display.

Press button
k
or
j
, on the
steering wheel until the following mes-
sage is seen in the multifunction dis-
play:
ENGINE OIL LEVEL - MEASUREMENT IN
PROCESS!
CORRECT MEASUREMENT ONLY
IF VEH. LEVEL
After about three seconds this mes-
sage is displayed:ENGINE OIL LEVEL-MEASURING NOWOne of the following messages will sub-
sequently appear in the indicator:

ENGINE OIL LEVEL - O.K.



ENGINE OIL LEVEL - ADD 1 QUART
(1.o LITER)!


ENGINE OIL LEVEL - ADD 1.5
QUARTS (1.5 LITERS)!


ENGINE OIL LEVEL - ADD 2.0
QUARTS (2.0 LITERS)!
Adding engine oil
1 Filler neck
Unscrew the cap from filler neck 1. Be
careful not to overfill with oil.
Be careful not to spill any oil when adding.
Avoid environmental damage caused by oil
entering the ground or water.!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.


297
Practical hints
Jump starting
Jump starting
If the battery is discharged, the engine can
be started with jumper cables and the bat-
tery of another vehicle. Observe the follow-
ing:

Jump starting should only be performed
when the engine and catalytic convert-
er are cold.


Do not start the engine if the battery is
frozen. Let the battery thaw out first.


Only jump start from batteries with the
same voltage rating (12V). Jump start-
ing with a more powerful battery could
damage the vehicle’s electrical system,
which will not be covered by the
Mercedes-Benz Limited Warranty.


Use only jumper cables with sufficient
cross-section and insulated terminal
clamps.


Always make sure that the jumper ca-
bels are not on or near pulleys, fans or
other parts that move when an engine
is started or running.
Warning!
G
Failure to follow these directions will cause
damage to the electronic components, and
can lead to a battery explosion and severe
injury or death.
Never lean over batteries while connecting
or jump starting, you might get injured.
Battery fluid contains sulfuric acid. Do not
allow this fluid to come in contact with eyes,
skin or clothing. In case it does, immediately
flush affected area with water, and seek
medical help if necessary.
A battery will also produce hydrogen gas,
which is flammable and very explosive. Keep
flames or sparks away from battery, avoid
improper connection of jumper cables,
smoking etc.
Read all instructions before proceeding.
!Jump starting may only be performed
on the battery installed in the engine
compartment.
Avoid repeated and lengthy starting at-
tempts.
Do not attempt to start the engine us-
ing a battery quick charge unit.
If engine does not run after several un-
successful starting attempts, have it
checked at the nearest authorized
Mercedes-Benz Center.
Excessive unburned fuel generated by
repeated failed starting attempts may
damage the catalytic converter and
may present a fire risk.
Make sure the jumper cables do not
have loose or missing insulation.
Make sure the cable clamps do not
touch any other metal part while the
other end is still attached to a battery.

336 IndexCassette playerOperating 112
Catalytic converter 222
CD changer* 172
CD mode 172
CD player Operating 111
Center console 25 AIRBAG OFF indicator lamp 251
Centigrade Setting temperature units 117
Central locking From inside 87
Switch 87
Switching on/off (control system) 122
Unlocking from inside 87
Central locking switch 87
Certification label 308
Changing Batteries (SmartKey) 276
Key setting 123
Changing CDs 172
Charcoal filter 156
Charging Vehicle battery 295 CHECK ENGINE malfunction indicator
lamp 250
Checking Coolant level 225, 229
Oil level 225, 227
Tire inflate pressure 225
Vehicle lighting 225
Child safety 65 Airbags 58
Infant and child restraint systems 62, 65
LATCH child seat mounts 70
Child seat mounts see LATCH child seat mounts 70
Cigarette lighter 199
Cleaning Cup holder 243
Gear selector lever 243
Hard plastic trim items 244
Headlamps 140
Headliner 244
Instrument cluster 243
Leather upholstery 244
Light alloy wheels 243
MB Tex upholstery 244
Plastic and rubber parts 244 Seat belts 244
Steering wheel 243
Windows 243
Windshield 49
Wiper blades 243
Climate control 142 Adjusting 145
Defogging windshield 145
Defrosting 146
Rear window defroster 147
Setting the temperature 145
Clock 23, 116
Closing Glove box 195
Hood 227
Side windows 182
Sliding/pop-up roof 186, 278
Sliding/pop-up roof with SmartKey 187
Sunshades for the sliding/pop-up roof 185
Trunk lid 86
Windows 182
Windows with SmartKey 183
Closing sliding/pop-up roof
In an emergency 278