cooling MERCEDES-BENZ C CLASS COUPE 2005 User Guide

199
Controls in detail
Audio system
Switching off
Remove SmartKey from starter switch.
or

Press M button.
Adjusting the volume

Turn rotary control of N button.
The volume will increase or decrease
depending on the direction turned. Adjusting sound functions
The bass and treble functions are called up
by pressing the
O button.
Settings for bass and treble are stored sep-
arately for the AM and FM wavebands,
weather band, CD mode and telephone
mode.
Bass

Press O button repeatedly until BASS
appears in the display.

Press
+ or
– soft key to increase or
decrease tone level accordingly.
or

Press
RES
soft key briefly to reset bass
tones to their center level.
The radio switches back to the stan-
dard radio menu eight seconds after
the last soft key is pressed.
iShould excessively high temperatures
occur while the audio system is being
operated, the display will dim. If tem-
peratures continue to rise,
HIGH TEMP

will appear in the display, after which
the audio system will be switched off
for a cooling-down period.
iIf your vehicle equipment includes a
Mercedes-Benz specified mobile tele-
phone*, you can adjust its volume sep-
arately from the volume of the audio
system while the telephone is being
used.

296 OperationEngine compartmentTransmission fluid level
The transmission fluid level does not need
to be checked. If you notice transmission
fluid loss or gear shifting malfunctions,
have an authorized Mercedes-Benz Center
check the transmission.
Coolant level
The engine coolant is a mixture of water
and anticorrosion/antifreeze. To check
the coolant level, the vehicle must be
parked on level ground and the engine
must be cool.
For more information on coolant, see
“Coolants” (
page 432).
Warning!
G
In order to avoid any possibly serious burns:

Use extreme caution when opening the
hood if there are any signs of steam or
coolant leaking from the cooling system,
or if the coolant temperature display
indicates that the coolant is overheated.


Do not remove pressure cap on coolant
reservoir if coolant temperature is
above 158°F (70°C). Allow engine to
cool down before removing cap. The
coolant reservoir contains hot fluid and
is under pressure.


Using a rag, slowly open the cap
approximately
1/2 turn to relieve ex-
cess pressure. If opened immediately,
scalding hot fluid and steam will be
blown out under pressure.


Do not spill antifreeze on hot engine
parts. Antifreeze contains ethylene gly-
col which may ignite and burn if it comes
into contact with hot engine parts.

359
Practical hints
What to do if …
Display symbol
Display message
Possible cause
Possible solution
B
Coolant
Check level
The coolant level is too low.

Add coolant (
page 296).

If you have to add coolant frequently,
have the cooling system checked by
an authorized Mercedes-Benz Center.
Warning!
G
Do not spill antifreeze on hot engine parts.
Antifreeze contains ethylene glycol which
may burn if it comes into contact with hot
engine parts. You can be seriously burned.
!Do not ignore the low engine coolant
level warning. Extended driving with
the message and symbol displayed
may cause serious engine damage not
covered by the Mercedes-Benz Limited
Warranty.
Do not drive without sufficient amount
of coolant in the cooling system. The
engine will overheat causing major
engine damage.

361
Practical hints
What to do if …
Display symbol
Display message
Possible cause
Possible solution
•
Coolant
Stop, engine off!
The poly-V-belt could be broken.

Stop immediately and check the
poly-V-belt.
If it is broken:

Do not continue to drive. Otherwise the
engine will overheat due to an
inoperative water pump which may
result in damage to the engine. Notify an
authorized Mercedes-Benz Center.
If it is intact:

Do not continue to drive the vehicle with
this message displayed. Doing so could
result in serious engine damage that is
not covered by the Mercedes-Benz
Limited Warranty.

Observe the coolant temperature gauge
(page 24).

Drive immediately to the nearest
authorized Mercedes-Benz Center.
Coolant
Visit workshop.
The cooling fan for the coolant is
malfunctioning.

Observe the coolant temperature gauge.

Have the fan replaced as soon as
possible.

426 Technical dataFuels, coolants, lubricants, etc.CapacitiesVehicle components and their respective
lubricants must match. Therefore use only
brands tested and approved by
Mercedes-Benz. Please refer to the Factory Approved Service Products
pamphlet, or inquire at your authorized
Mercedes-Benz Center.
Model
Capacity
Fuels, coolants, lubricants, etc.
Engine with oil filter
C230Kompressor
C320
5.8 US qt (5.5 l)
7.9 US qt (7.5 l)
approved engine oils
Automatic transmission
8.5 US qt (8.0 l)
MB Automatic Transmission Fluid
Manual transmission
1.3 US qt (1.2 l)
MB Manual Transmission Oil
Rear axle
1.2 US qt (1.1 l)
Hypoid gear oil SAE 85 W 90
Power steering
approx. 1.1 US qt (1.0 l)
MB Power Steering Fluid (Pentosin CHF 11S)
Front wheel hubs
approx. 2.1 oz (60 g) each
High temperature roller bearing grease
Cooling system
C230Kompressor
C320
approx. 5.9 US qt (5.6 l)
approx. 6.8 US qt (6.4 l)
MB 325.0 Anticorrosion/Antifreeze Agent

432 Technical dataFuels, coolants, lubricants, etc.Hot weather performance
At ambient temperatures above 95°F
(35°C) start times may increase and be
accompanied by a rough idle following the
start.
Cruising range
E85 fuel contains less energy per gallon
than gasoline. To ensure that engine per-
formance with Ethanol fuel is similar to
that when using gasoline, the engine must
burn more Ethanol fuel. As a result, it is to
be expected that the fuel consumption will
increase when using E85 compared to
gasoline operation.
Maintenance
Please inform your authorized
Mercedes-Benz Center if you use or have
used E85 fuel when your vehicle is deliv-
ered for maintenance or repairs.
Coolants
The engine coolant is a mixture of water
and anticorrosion/antifreeze, which
provides:

Corrosion protection


Freeze protection


Boiling protection (by increasing the
boiling point)
The cooling system was filled at the factory
with a coolant providing freeze protection
to approximately -22°F (-30°C) and corro-
sion protection.
If the antifreeze mixture is effective to
-22°F (-30°C), the boiling point of the cool-
ant in the pressurized cooling system is
reached at approximately 266°F (130°C). The coolant solution must be used
year-round to provide the necessary corro-
sion protection and increase boil-over pro-
tection. Refer to Maintenance Booklet for
replacement interval.
Coolant system design and coolant used
determine the replacement interval. The
replacement interval published in the
Maintenance Booklet is only applicable if
MB 325.0 anticorrosion/antifreeze solu-
tion or other Mercedes-Benz approved
products of equal specification (see Facto-
ry Approved Service Products pamphlet)
are used to renew the coolant concentra-
tion or bring it back up to the proper level.
To provide important corrosion protection,
the solution must be at least 45% anticor-
rosion/antifreeze (equivalent to freeze
protection to approximately - 22°F
[-30°C]).
iUse of E85 may reduce your driving
range.

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.

443
Index
A
ABS 25, 81, 437
Malfunction indicator lamp 340
Messages in display 353
Warning lamp 340
Accelerator position, automatic transmission* 165
Accessory weight 323
Accident In case of 55
Activating Air conditioning (cooling) 193Climate control 179
Air recirculation mode 189 Climate control 177
Anti-theft alarm system 86
Automatic climate control* 183
Central locking (control system) 148
Charcoal filter 191
Climate control 173
Climate control system 175
Defrosting 188 Climate control 177
Easy-entry/exit feature* 148
Electric air pump 399
ESP 85 Exterior headlamps 51
Exterior lamps 111
Exterior rear view mirror parking
position* 169
Hazard warning flasher 116
Headlamps 51
High beams 114
Ignition 33
Immobilizer 86
Rear fog lamp 113
Rear window defroster 170
Residual heat 193
Seat heating* 106
Tow-away alarm 88
Windshield wipers 53
Adding Coolant 296, 297
Engine oil 294
Headlamp cleaning fluid 299
Windshield washer fluid 299
Additional turn signals 385
Adjustable air vents, rear passenger compartment 194Climate control 180 Adjusting 35
Air distribution 186 Climate control 176
Air volume 187 Climate control 176
Backrest tilt 36, 38
Exterior rear view mirrors 42
Head restraint height 37, 38
Head restraint height, rear seats 103
Head restraint tilt 37, 39
Head restraint tilt, rear seats 105
Head restraints, rear seats Folding back 104
Placing upright 105
Instrument cluster illumination 119
Interior rear view mirror 42
Manual seat 36
Mirrors 42
Rear seat head restraints 103
Seat cushion tilt 36, 38
Seat fore and aft adjustment 36, 38
Seat height 36, 38
Seats 35
Steering column height 42
Steering column length 42
Steering wheel 40

444 IndexAdjusting sound functions 199
Adjusting the volume 199
Air bags 61Children 62
Front 65
Front passenger front air bag off indica-tor lamp 27, 76, 345
Passenger 65
Safety guidelines 64
Side impact 66
Window curtain 66
Air conditioner refrigerant 428
Air conditioning (cooling) Turning off 192 Climate control 179
Turning on 192 Climate control 179
Air distribution Adjusting 186 Climate control 176
Air pressure 323
Air pressure see Tire inflation pressure
Air pump, electric Turning on 399 Air recirculation mode 189
Activating 189Climate control 177
Deactivating 190 Climate control 178
Air vents, rear passenger compartment Adjustable 194Climate control 180
Air volume Adjusting 187Climate control 176
Alarm Audible 80, 87, 88
Canceling 87, 88
Visual 86
Alarm system Anti-theft 86
Alignment bolt 396
Alignment bolt (vehicle tool kit) 437
Anticorrosion/antifreeze 433
Antiglare Automatic* 168
Manual 167
Antilock brake system (ABS) 437 Anti-theft alarm system
Arming 86
Canceling alarm 87, 88
Disarming 87
Anti-theft systems 86 Anti-theft alarm system 86
Immobilizer 86
Tow-away alarm 87
Aquaplaning 281
Armrest Storage spaces 255
Ashtrays Center console 257
Rear seat 258
Aspect ratio 323
ATF (automatic transmission fluid) 296
AUDIO menu 129 Selecting radio station 130
Selecting satellite radio* station 130

449
Index
Deactivating
Air conditioning (cooling) 192Climate control 179
Air recirculation mode 190 Climate control 178
Alarm 87
Anti-theft alarm system 87
Automatic climate control* 183
Central locking (control system) 148
Charcoal filter 192
Climate control 173
Climate control system 175
Cruise control 248
Defrost 188
Defrosting Climate control 177
ESP 84
Exterior lamps 111
Exterior lamps delayed shut-off 146
Front fog lamps 146
Hazard warning flasher 116
Headlamps 57
Immobilizer 86
Rear window defroster 170
Residual heat 193 Seat heating* 106
Tow-away alarm 88
Deep water see Standing water 284
Defogging Windshield 187Climate control 176
Defrosting 188 Climate control 177
Delayed shut-off Exterior lamps 146
Department of Transportation see DOT
Dialing A number (telephone*) 154
Difficulties While driving see Problems while driving 55
With starting 49
Digital speedometer 129
Direction of rotation (tires) 303
Discharged battery Jump starting 404
Disconnecting Vehicle battery 402
Display Messages in display 362 Display elements
Audio system 196
Displays Digital speedometer 129
Engine oil 293
Outside temperature 129
Selecting display for status indicator 138
Service indicator 330
Showing malfunctions 132
Symbol messages 357
Text messages 349
Vehicle status messages 347
Distance to empty (range) Calling up 152
Door control panel 30
Door handle 30
Door unlock With Tele Aid* 268
Doors Message in display 362
Opening from inside vehicle 94
Opening from outside 92
Opening from the outside 92
DOT 323