2006 MERCEDES-BENZ C55AMG coolant temperature

368 Practical hints
What 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 symbolDisplay messagePossible cause/consequencePossible 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.

369 Practical hints
What to do if …
Display symbolDisplay messagePossible cause/consequencePossible 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 authorized Mercedes-Benz Center.
If it is intact:
Do not continue to drive the vehicle with this
message displayed. Doing so could result in seri-
ous 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 Mer-
cedes-Benz Center.
Coolant
Visit workshopThe 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.

370 Practical hints
What to do if …
Display symbolDisplay messagePossible cause/consequencePossible solution
ÑCruise contr.
Drive to workshopCruise control is malfunctioning.Visit an authorized Mercedes-Benz
Center.
GDisplay malfunction
Visit workshopThe 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 workshopCertain 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.
JDoors openYou are attempting to drive with one or
more doors open.Close the doors.

436 Technical data
Fuels, coolants, lubricants, etc.
Capacities
Vehicle components and their respectivelubricants must match. Therefore only use
products tested and approved by
Mercedes-Benz. Please refer to the Factory Approved
Service Products pamphlet, or inquire at
your Mercedes-Benz Center.
CapacityFuels, coolants, lubricants, etc.
Engine with oil filter9.0 US qt (8.5 l)Approved engine oils
Automatic transmission9.3 US qt (8.7 l)MB Automatic Transmission Fluid
Rear axle1.5 US qt (1.4 l)Hypoid gear oil SAE 85 W 90
Power steeringapprox. 1.1 US qt (1.0 l)MB Power Steering Fluid (Pentosin CHF 11S)
Front wheel hubsapprox. 2.1 oz (60 g) eachHigh temperature roller bearing grease
Brake system0.5 US qt (0.5 l)MB Brake Fluid (DOT 4+)
Cooling systemapprox. 12.8 US qt (12.0 l)MB 325.0 Anticorrosion/antifreeze agent
Fuel tank
including
a reserve of16.4 US gal (62.0 l)
2.6USgal (10.0l)Premium unleaded gasoline:
Minimum Posted Octane 91
(Avg. of 96 RON/86 MON)
Air conditioning systemR-134a refrigerant and special PAG lubricant oil
(never R-12)
Windshield washer3.2 US qt (3.0 l)MB Windshield Washer Concentrate1
1Use MB Windshield Washer Concentrate “MB SummerFit” and water for temperatures above freezing point or MB Windshield Washer Concentrate “MB SummerFit”
and commercially available premixed windshield washer solvent/antifreeze for temperatures below freezing point. Follow suggested mixing ratios (page 442).
Windshield washer and headlamp
cleaning system*6.4 US qt (6.0 l)

440 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.Anticorrosion/antifreeze
Your vehicle contains a number of
aluminum parts. The use of aluminum
components in motor vehicle engines
necessitates that anticorrosion/antifreeze
coolant used in such engines be specifi-
cally formulated to protect the aluminum
parts.
Failure to use such anticorrosion/anti-
freeze 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/antifreeze 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.

442 Technical data
Fuels, 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 “MB SummerFit”
and water (or concentrate and com-
mercially available premixed wind-
shield washer solvent/antifreeze,
depending on ambient temperatures).Windshield and headlamp washer fluid
mixing ratio
For temperatures above freezing point, use
MB Windshield Washer Concentrate
“MB SummerFit” and water:

1 part “MB SummerFit” to 100 parts
water
(1.34floz [40ml]“MBSummerFit” to
1 gallon [4.0 l] water)
For temperatures below freezing point, use
MB Windshield Washer Concentrate
“MB SummerFit” and commercially avail-
able premixed windshield washer sol-
vent/antifreeze:

1 part “MB SummerFit” to 100 parts
solvent
(1.34floz [40ml]“MBSummerFit” to
1 gallon [4.0 l] 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.

452 Index
Control system submenus 127, 129
Convenience 148
Instrument cluster 138
Lighting 144
Time/Date 140
Vehicle 147
Controller Area Network see CAN system
Coolant 301, 439
Anticorrosion/antifreeze
quantity 440
Capacities 436
Checking coolant level 295, 301
Messages in display 367–369
Temperature 292
Temperature gauge 25, 123
Cruise control 245, 444
Message in display 370
Cup holder 258, 260
Cleaning 346
Curb weight 332
Customer Assistance Center see CACD
Date display, setting 142, 143
Daytime running lamp mode 116
Setting 144
Deep water see Standing water
Defogging windshield
Automatic climate control*
(Canada only) 191
Climate control 180
Defrosting, Front
Automatic climate control*
(Canada only) 190
Climate control 179
Defrosting, Rear 173
Delayed shut-off
Exterior lamps 146
Interior lighting 147
Department of Transportation see DOT
Difficulties
While driving 52
With starting 46
Digital clock see clock
Digital speedometer 130
Dimensions, vehicle 435
Direction of rotation (tires) 308Displays
Digital speedometer 130
Maintenance service indicator 338
Messages in display 370
Multifunction display 125
Outside temperature 130
Symbol messages 365
Text messages 360
Vehicle status messages
memory 135, 358
Distance to empty (range),
Trip computer 151
Door control panel 30
Doors
Entry lamps 121
Locking/unlocking, SmartKey 94
Message in display 370
Opening from inside/outside 96, 99
Remote door unlock (Tele Aid*) 272
Unlocking, Mechanical key 386
DOT 332
Downhill driving
Cruise control 246
Drinking and driving 283

454 Index
ESP®84, 444
Messages in display 361–362
Warning lamp 25, 354
ETD 70, 445
Safety guidelines 64
Exterior lamp switch 48, 114
Exterior rear view mirrors 40
Parking position 170
F
Fahrenheit see Temperature display
mode 137
Filler neck, Engine oil 301
First aid kit 380
Flat tire 404
Jacking up the vehicle 405
Lowering the vehicle 410
Mounting the spare wheel 404
Preparing the vehicle 404
Spare wheel with collapsible tire 383
Flexible Service System see FSSFluids
Automatic transmission fluid 301,
436
Brake fluid 295, 437
Capacities 436
Engine coolant 295, 439
Engine oil 298, 437
Power steering fluid 436
Windshield washer and headlamp
cleaning system* 304, 442
Fog lamps 117, 118
Message in display 374, 376
Replacing bulbs 395, 396
Front air bags 65
Front lamps see Headlamps
Front passenger front air bag 65
Front passenger front air bag off indicator
lamp 27, 75, 357
Front seat head restraints see Head
restraints 106
FSS (Flexible Service System) (Canada
vehicles) 338, 445Fuel 293, 438
Additives 438
Capacities, Fuel tank 436
Filling the tank 293
Fuel filler flap and cap, Multifunction
display messages 353, 373
Fuel gauge 25
Fuel reserve warning lamp 354
Requirements, Octane rating 439
Technical data 436, 438
Fuel consumption statistics
After start 150
Since last reset 151
Fuel filler flap 293
Fuel reserve warning lamp 25
Fuel tank
Capacity 436
Filler flap 293
Fuels, coolants, lubricants etc.
Capacities 436