2005 MERCEDES-BENZ C CLASS COUPE check engine

364 Practical hintsWhat to do if …When the message
At next gas station
add 1.0 qt engine oil
(Canada:
1.0 l
)
appears while the engine is running and at
operating temperature, the engine oil level
has dropped to approximately the mini-
mum level. When this occurs, the warning will first
come on intermittently and then stay on if
the oil level drops further.
Visually check for oil leaks. If no obvious oil
leaks are noted, drive to the nearest
service station where the engine oil should
be topped to the required level with an
approved oil specified in the Factory
Approved Service Products pamphlet.
Display symbol
Display messages
Possible cause
Possible solution
:
Engine oil level
Visit workshop.
The engine oil has dropped to a critical
level.

Check the engine oil level
(page 294) and add oil as required
(page 293).

If you must add engine oil frequently,
have the engine checked for possible
leaks.
Oil sensor malfunction
Visit workshop.
The measuring system is malfunctioning.

Have the measuring system checked
by an authorized Mercedes-Benz
Center.!The engine oil level warnings should
not be ignored. Extended driving with
the symbol displayed could result in
serious engine damage that is not
covered by the Mercedes-Benz Limited
Warranty.

401
Practical hints
Battery
 Battery
The battery is located in the engine com-
partment on the right hand side.
1 Clamps
Removing filter box
Release clamps 1.

Remove filter box.
Installing filter box

Insert filter box properly.

Secure it with clamps 1.
Warning!
G
Failure to follow these instructions can re-
sult in severe injury or death.
Observe all safety instructions and precau-
tions when handling automotive batteries
(page 297).
Never lean over batteries while connecting,
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 explosive. Keep
flames or sparks away from battery, avoid
improper connection of jumper cables,
smoking, etc.
!Never loosen or detach battery termi-
nal clamps while the engine is running
or the SmartKey is in the starter switch.
Otherwise the alternator and other
electronic components could be se-
verely damaged.
Have the battery checked regularly by
an authorized Mercedes-Benz Center.
Refer to Maintenance Booklet for main-
tenance intervals or contact an autho-
rized Mercedes-Benz Center for further
information.Warning!
G
Do not place metal objects on the battery as
this could result in a short circuit.
Use leak-proof battery only to avoid the risk
of acid burns in the event of an accident.


404 Practical hintsJump 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 (12 V). 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 the jumper cables
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.
Attempting to jump start a frozen battery
can result in it exploding, causing personal
injury.
Read all instructions before proceeding.
!Jump starting may only be performed
on the battery installed in the engine
compartment.
Avoid repeated and lengthy starting
attempts.
Do not attempt to start the engine
using a battery quick charge unit.
If engine does not run after several
unsuccessful 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.

405
Practical hints
Jump starting
The battery is located in the engine com-
partment on the right hand side. The
terminals for jump starting are located in
front of the battery.
Make sure the two vehicles do not
touch.

Turn off the engine.
On both vehicles:

Turn off all electrical consumers.

Apply parking brake.

Shift gear selector lever to position P
(manual transmission to Neutral). 1
Positive terminal of charged battery
2 Positive under hood terminal in front of
discharged battery
3 Negative terminal of charged battery
4 Negative under hood terminal in front
of discharged battery

Connect positive terminal 1 of the
charged battery with positive under
hood terminal 2 in front of the dis-
charged battery with the jumper ca-
bles. Clamp cable to charged
battery 1 first.

Start engine of the vehicle with the
charged battery and run at idle speed.

Connect negative terminal 3 of the
charged battery with negative under
hood terminal 4 in front of the dis-
charged battery with the jumper
cables. Clamp cable to charged
battery 3 first.

Start the engine of the disabled
vehicle.
Now you can turn on the electrical con-
sumers. Do not turn on the lights under
any circumstances.

Remove the jumper cables first from
negative terminals 4 and 3 and then
from positive terminals 2 and 1.
You can now turn on the lights.

Have the battery checked at the
nearest authorized Mercedes-Benz
Center.
Warning!
G
Keep flames or sparks away from battery.
Do not smoke.
Observe all safety instructions and precau-
tions when handling automotive batteries
(page 297).
!Vehicles with automatic transmission:
Do not tow-start the vehicle.

433
Technical data
Fuels, coolants, lubricants, etc.
If you use a solution that is more than 55%
anticorrosion/antifreeze (freeze protec-
tion to approximately - 49°F [-45°C]), the
engine temperature will increase due to
the lower heat transfer capability of the so-
lution. Therefore, do not use more than
this amount of anticorrosion/antifreeze.
If the coolant level is low, water and
MB 325.0 anticorrosion/antifreeze should
be used to bring it up to the proper level
(have cooling system checked for signs of
leakage). Please make sure the mixture is
in accordance with label instructions.
The water in the cooling system must meet
minimum requirements, which are usually
satisfied by normal drinking water. If you
are not sure about the water quality, con-
sult an authorized Mercedes-Benz Center.
Anticorrosion/antifreeze
Your vehicle contains a number of alumi-
num parts. The use of aluminum compo-
nents in motor vehicle engines
necessitates that anticorrosion/antifreeze
coolant used in such engines be specifical-
ly formulated to protect the aluminum
parts. (Failure to use such anticorro-
sion/antifreeze coolant will result in a
significantly shortened service life.)
Therefore, the following product is strongly
recommended for use in your vehicle:
Mercedes-Benz 325.0 Anticorrosion/Anti-
freeze agent.
Before the start of the winter season (or
once a year in hot southern regions), you
should have the anticorrosion/antifreeze
concentration checked. The coolant is also
regularly checked each time you bring your
vehicle to an authorized Mercedes-Benz
Center for service.

446 IndexBoltsFor spare wheel 376
Brake Indicator lamp 25
Brake assist system (BAS) 437
Brake fluid 290, 428 Checking 290
Message in display 358
Brake lamp bulbs 385
Brake pads Message in display 358
Brakes 278 Warning lamp 341
Break-in period 276
Bulbs, replacing 384 Additional turn signals 385
Brake lamps 385
Fog lamps 385
Front lamps 385
High beam 385
High beam flasher 385
License plate lamps 385, 392
Low beam 385
Parking lamps 385, 388, 390
Rear fog lamp 385, 390
Rear lamps 385 Side marker lamp 391
Side marker lamps 385, 390
Standing lamps 385, 388, 390
Tail lamp assemblies 385
Tail lamp unit 390
Turn signal lamps 385
Button Audio system 198
C
CAC (Customer Assistance Center) 437
Calling up Range (distance to empty) 152
Service indicator 331
CAN system 437
Capacities Fuels, coolants, lubricants, etc. 426
Cargo compartment Lighting 118
Tie-down rings 253
Cargo tie-down rings 253
Catalytic converter 285
CD changer* 213
CD changer* operation 215
CD player
Operating 131
CD* operation 213 Center console 27
Front passenger front air bag off indica-tor lamp 27, 76, 345
Lower part 28
Upper part 27
Centigrade Setting temperature units 137
Central locking Automatic 97
From inside 98
Switch 98
Switching on/off (control system) 148
Unlocking from inside 98
Central locking switch 98
Changing CDs 213
Key setting 148
Charcoal filter 191 Activating 191
Deactivating 192
Charging Vehicle battery 402
CHECK ENGINE malfunction indicator lamp 342

451
Index
Engine oil 292, 428
Adding 294
Additives 428
Checking level 292
Consumption 292
Display messages 363–364
Filler neck 295
Messages in display 293, 363–364
Viscosity 438
Engine oil level see Oil level
ESP 25, 83, 438 Messages in display 355–356
Switching off 84
Switching on 85
Warning lamp 343
ETD 438 Safety guidelines 64
ETD (Emergency tensioning device) 69
Ethanol fuel At the gas station 288
Switching fuels 431
Exterior lamp switch 110
Exterior lamps Delayed shut-off 146
Exterior rear view mirror
Parking position* for 150 Exterior rear view mirrors
Adjusting 42
F
Fahrenheit Setting temperature units 137
Fastening the seat belts 44
Fine adjustment Cruise control 249
First aid kit 373
Flat tire 394 Inflating the spare tire 398
Lowering the vehicle 400
Mounting the spare wheel 394
Preparing the vehicle 394
Spare wheel 375
Tighten wheel bolts 400
Flexible fuel vehicles 431 At the gas station 288
Switching fuels 431
Flexible Service System (Canada vehicles) 330, 438
Fog lamp, rear Message in display 368
Switching on 113 Fog lamps, front
Messages in display 366
Replacing bulbs 385, 386
Switching on 113
Front air bags 65
Front lamps Bi-Xenon* type 388
Halogen-type 386
Messages in display 366–370
Replacing bulbs 385, 386
Switching on 110
Front passenger front air bag off indicator lamp 27, 76, 345
Front seat backrest Folding backrest back 40
Folding backrest forward 39
Front seat head restraints Installing 102 Power seat* 103
Manual seat 102
Power seat* 103
Removing 102 Power seat* 103
Front seats Heating* 106

454 IndexInstrument cluster 24, 119, 439Cleaning 337
Coolant temperature display 120
Illumination 119
Lamps in 343–344
Multifunction display 123
Outside temperature indicator 121
Selecting language 138
Instrument lighting 119
Instruments and controls see Cockpit
Interior lighting 117 Activating automatic control 117
Deactivating automatic control 117
Delayed shut-off (Control system) 147
Manual operation 118
Interior rear view mirror Adjusting 42
Antiglare (manual) 167
Interior storage spaces Armrest 255
Cup holders 256
Intermittent wiping 54 J
Jack 373
Jump starting 404
K
Key dependency memory
Settings 149
Key positions in starter switch 33
Key, mechanical 377
Key, SmartKey Battery check lamp 92
Checking the batteries 93
Factory setting 92
Global locking 92
Global unlocking 92
Loss of 94
Messages in display 365
Positions in starter switch 33
Remote control 90
Restoring to factory setting 93
Selective setting 92
Starting the engine 48, 49
Unlocking with 32
Kickdown 165, 439
Kilometers/miles in speedometer 137
Kilopascal 324
Km/h or mph in speedometer 137 L
Labels, identification 416
Lamp bulbs, exterior 384
Lamps, exterior
Front 385
Light sensor 367
Messages in display 366–370
Rear 385
Lamps, indicator and warning ABS 340
Air bag Off 66
Battery (SmartKey) 92
Brake 25
Brakes 341
CHECK ENGINE 342
Engine diagnostics 342, 344
ESP 343
Fuel reserve 344
Instrument cluster 343–344
Low beam 25
Seat belts 344
Service indicator 330
SRS 61, 344
Language Multifunction display 138
Setting 138