2006 MERCEDES-BENZ C230 coolant temperature

372 Practical hintsWhat to do if …
During severe operating conditions and
stop-and-go city traffic, the coolant tem-
perature may rise close to 248°F (120°C).
Display symbol
Display message
Possible cause/consequence
Possible solution
•
Coolant
Stop, engine off!
The coolant is too hot.

Stop the vehicle in a safe location and
turn off the engine.

Only start the engine again after the
message disappears. You could
otherwise damage the engine.
Warning!
G
Driving when your engine is badly over-
heated 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 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 the
engine has cooled down.
!The engine should not be operated with
the coolant temperature above 248°F
(120°C). Doing so may cause serious
engine damage which is not covered by
the Mercedes-Benz Limited Warranty.

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

Stop the vehicle in a safe location and
immediately turn off the engine.

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 au-
thorized Mercedes-Benz Center.
If it is intact:

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

Observe the coolant temperature gauge in the in-
strument cluster (
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 in the in-
strument cluster (
page 24).

Have the fan replaced as soon as possible.

374 Practical hintsWhat to do if …Display symbol
Display message
Possible cause/consequence
Possible solution
Ñ
Cruise contr.
Drive to workshop
Cruise control is malfunctioning.

Visit an authorized Mercedes-Benz
Center.
G
Display malfunction
Visit workshop
The instrument cluster display is
malfunctioning.

Continue driving with added caution.

Visit an authorized Mercedes-Benz
Center as soon as possible.
The displays for several systems have
malfunctioned. Some systems them-
selves may also have malfunctioned.

Have the electronic systems checked
by an authorized Mercedes-Benz
Center.
±
Display malfunction
Visit workshop
Certain electronic systems are unable to
relay information to the control system.
The following systems may have failed:

Coolant temperature display


Tachometer


Cruise control display

Have the electronic systems checked
by an authorized Mercedes-Benz
Center.
J
Doors open
You are attempting to drive with one or
more doors open.

Close the doors.

441 Technical data
Fuels, coolants, lubricants, etc.
Model
Capacity
Fuels, coolants, lubricants, etc.
Power steering
approx. 1.1 US qt (1.0 l)
MB Power Steering Fluid (Pentosin
CHF 11S)
Front wheel hubs
approx. 2.1oz (60g)
each
High temperature roller bearing grease
Brake system
0.5 US qt (0.5 l)
MB Brake Fluid (DOT 4+)
Cooling system
approx. 7.5 US qt (7.1 l)
MB 325.0 Anticorrosion/antifreeze
agent
Fuel tank
including
a reserve of
16.4 US gal (62.0 l)
2.1 US gal (8.0 l)
Premium unleaded gasoline:
Minimum Posted Octane 91
(Avg. of 96 RON/86 MON)
Air conditioning system
R-134a refrigerant and special PAG lubri-
cant oil (never R-12)
Windshield washer
3.2 US qt (3.0 l)
MB Windshield Washer Concentrate
1
Windshield washer and headlamp
cleaning system*
6.4 US qt (6.0 l)
1Use MB Windshield Washer Concentrate “S” and water for temperatures above freezing point or MB Windshield Washer Concentrate “S” and commercially available
premixed windshield washer solvent/antifreeze for temperatures below freezing point. Follow suggested mixing ratios (page 448).

445 Technical data
Fuels, coolants, lubricants, etc.
The coolant solution must be used
year-round to provide the necessary corro-
sion protection and increase boil-over
protection. 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
solution or other Mercedes-Benz approved
products of equal specification (see
Factory Approved Service Products
pamphlet) are used to renew the coolant
concentration or bring it back up to the
proper level.To provide important corrosion protection,
the solution must be at least 45%
anticorrosion/antifreeze [equivalent to
freeze protection to approx. -22°F
(-30°C)].
If you use a solution that is more than 55%
anticorrosion/antifreeze [freeze
protection to approx. -49°F (-45°C)], the
engine temperature will increase due to
the lower heat transfer capability of the
solution. 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,
consult an authorized Mercedes-Benz
Center.

448 Technical dataFuels, coolants, lubricants, etc.Windshield washer and headlamp cleaning system*
Both the windshield washer and headlamp
cleaning system* are supplied from the
windshield washer fluid reservoir.
The washer fluid reservoir has a capacity of
approx.:

3.2 US qt (3.0 l) in vehicles without
headlamp cleaning system*


6.4 US qt (6.0 l) in vehicles with
headlamp cleaning system*

Refill the reservoir with MB Windshield
Washer Concentrate “S” and water
(or concentrate and commercially
available premixed windshield washer
solvent/antifreeze, depending on
ambient temperatures).Windshield and headlamp washer fluid
mixing ratio
For temperatures above freezing point, use
MB Windshield Washer Concentrate “S”
and water:


1 part “S” to 100 parts water
(1.34floz [40ml]“S” to 1gallon [4.0l]
water)
For temperatures below freezing point, use
MB Windshield Washer Concentrate “S”
and commercially available premixed
windshield washer solvent/antifreeze:


1 part “S” to 100 parts solvent
(1.34floz [40ml]“S” to 1gallon [4.0l]
solvent)
Warning!
G
Washer solvent/antifreeze is highly flamma-
ble. Do not spill washer solvent/antifreeze
on hot engine parts, because it may ignite
and burn. You could be seriously burned.

458 IndexControl system submenus 132, 134
Convenience 153
Instrument cluster 143
Lighting 149
Time/Date 145
Vehicle 152
Controller Area Network see CAN system
Coolant 301, 444
Anticorrosion/antifreeze
quantity 445
Capacities 440, 441
Checking coolant level 295, 301
Messages in display 371–373
Temperature 293
Temperature gauge 25, 128
Corner-illuminating front fog lamps* 123
Replacing bulbs 398
Cruise control 247, 450
Message in display 374
Cup holder 259, 260
Cleaning 346
Curb weight 331
Customer Assistance Center see CACD
Date display, setting 147, 148
Daytime running lamp mode 120
Setting 149
Deep water see Standing water
Defogging windshield
Automatic climate control*
(Canada only) 192
Climate control 181
Defrosting, Front
Automatic climate control*
(Canada only) 191
Climate control 181
Defrosting, Rear 175
Delayed shut-off
Exterior lamps 151
Interior lighting 152
Department of Transportation see DOT
Difficulties
While driving 56
With starting 50
Digital clock see clock
Digital speedometer 135Dimensions, vehicle 438
Direction of rotation (tires) 307
Displays
Digital speedometer 135
Maintenance service indicator 338
Messages in display 374
Multifunction display 130
Outside temperature 135
Symbol messages 369
Text messages 360
Vehicle status messages
memory 139, 358
Distance to empty (range),
Trip computer 156
Door control panel 30
Doors
Entry lamps 126
Locking/unlocking, SmartKey 98
Message in display 374
Opening from inside/outside 100,
102
Remote door unlock (Tele Aid*) 272
Unlocking, Mechanical key 389

460 Index
Number 428
Starting 49
Tachometer 25
Technical data 430
Turning 59
Engine coolant see coolant
Engine number 450
Engine oil 298, 442
Adding 300
Additives 442
Changing 440
Checking level (Dipstick) 299
Consumption 298
Filler neck 300
Recommended engine and
oil filter 375
Viscosity 450
ESP®
89, 450
Four wheel electronic traction system
with ESP
®
92
Messages in display 361–362
Warning lamp 25, 354ETD 72, 450
Safety guidelines 66
Exterior lamp switch 52, 118
Exterior rear view mirrors 43
Parking position* 172
F
Fahrenheit see Temperature display
mode 142
Filler neck, Engine oil 300
First aid kit 383
Flat tire 406
Jacking up the vehicle 407
Lowering the vehicle 410
Minispare wheel 386
Mounting the spare wheel 406
Preparing the vehicle 406
Flexible Service System see FSS
Fluids
Automatic transmission fluid 300,
440
Brake fluid 295, 442
Capacities 440Engine coolant 295, 444
Engine oil 298, 442
Power steering fluid 441
Windshield washer and headlamp
cleaning system* 303, 448
Fog lamps 121, 122
Message in display 377, 379
Replacing bulbs 398, 399
Four wheel electronic traction system
(4MATIC) with ESP
®
92
4MATIC 92
Front air bags 67
Front lamps see Headlamps
Front passenger front air bag 67
Messages in display 364–367
Front passenger front air bag off indicator
lamp 27, 80, 356, 357
Front seat head restraints see Head
restraints 109
FSS (Flexible Service System)
(Canada vehicles) 338, 450