2007 MERCEDES-BENZ CLK63AMG coolant temperature

371 Practical hints
What to do if …?
ProblemPossible cause/consequenceSuggested solution
•The red coolant warning lamp
comes on when the engine is
running.There is insufficient coolant in the reservoir.Add coolant to prevent engine from
overheating (
page 320).
If this warning lamp comes on frequently,
there is a leak in the cooling system.Have the cooling system checked.
If the coolant level is correct, the electric ra-
diator fan may be broken.If the coolant temperature is below
257 °F (125 °C), you can continue
driving to the nearest authorized
Mercedes-Benz Center.
Avoid high engine loads (e.g. driving
uphill) and stop-and-go driving.
•The red coolant warning lamp
comes on while driving and you
hear a warning sound.The coolant temperature has exceeded
257 °F (125 °C).Stop as soon as possible and allow
the engine and coolant to cool down.
Warning!G
Driving when your engine is overheated 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 which can occur just by open-
ing 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.

392 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
Observe the coolant temperature indicator in
the instrument cluster (
page 26).
If the temperature rises again:
Contact an authorized Mercedes-Benz
Center immediately.
•The cooling fan for the coolant is mal-
functioning.Observe the coolant temperature indicator in the
instrument cluster (
page 26).
Have the fan replaced as soon as possible.
Warning!G
Driving when your engine is overheated 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 which can occur just by open-
ing 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). Do-
ing so may cause serious engine damage which
is not covered by the Mercedes-Benz Limited
Warranty.

393 Practical hints
What to do if …?
Display symbolDisplay messagePossible cause/consequencePossible solution
4Gas cap is openA loss of pressure has been detected in
the fuel system. The fuel cap may not be
closed properly or the fuel system may be
leaky.Check the fuel cap (page 312).
If it is not closed properly:
Close the fuel cap.
If it is closed properly:
Have the fuel system checked by an
authorized Mercedes-Benz Center.
± 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 Cen-
ter.

473 Technical data
Fuels, coolants, lubricants, etc.
ModelCapacityFuels, coolants, lubricants, etc.
Power steeringCLK 350
CLK 550
CLK 63 AMGapprox. 1.1 US qt (1.0 l)
approx. 1.1 US qt (1.0 l)
approx. 1.3 US qt (1.2 l)MB Power Steering Fluid (Pentosin
CHF 11S)
Front wheel hubsCLK 350
CLK 550
CLK 63 AMGapprox. 3.0 oz (85 g) each
approx. 3.0 oz (85 g) each
approx. 2.5 oz (70 g) eachHigh temperature roller bearing grease
Brake system0.64 US qt (0.6 l)MB Brake Fluid (DOT 4+)
Cooling systemCLK 350
CLK 550
CLK 63 AMGapprox. 7.8 US qt (7.4 l)
approx. 9.7 US qt (9.2 l)
approx. 11.5 US qt (10.9 l)MB 325.0 Anticorrosion/Antifreeze
Agent
Fuel tank
including a reserve of
CLK 350
CLK 550
CLK 63 AMG
16.35 US gal (62.0 l)
2.11 US gal (8.0 l)
2.11 US gal (8.0 l)
3.17 US gal (12.0 l)Premium unleaded gasoline:
Minimum Posted Octane 91
(Avg. of 96 RON / 86 MON)
Air conditioning systemR-134a refrigerant and special PAG lu-
bricant oil (never R-12)
Windshield washer and
headlamp cleaning system*6.4 US qt (6.0 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 479).

479 Technical data
Fuels, coolants, lubricants, etc.
Windshield washer system 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. 6.4 US qt (6.0 l).
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
(1.34 fl oz [40 ml] “MB SummerFit” 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
solvent / antifreeze:

1 part “MB SummerFit” to 100 parts
solvent
(1.34 fl oz [40 ml] “MB SummerFit” to
1 gallon [4.0 l] solvent)
Warning!G
Washer solvent/antifreeze is highly flam-
mable. Do not spill washer
solvent/antifreeze on hot engine parts, be-
cause it may ignite and burn. You could be
seriously burned.

484 Index
Control system menus 142, 143
AMG 145
AUDIO 149
NAV* 151
Settings 153
Settings, Submenus 154
Standard display 145
Submenus 141
TEL* 167
Trip computer 165
Vehicle status message memory 152
Control system submenus 141, 143, 155
Convenience 164
Instrument cluster 156
Lighting 160
Time/Date 158
Vehicle 163Coolant 320, 477
Adding 320
Anticorrosion/antifreeze
mixing ratio and quantity 477
Capacities 472
Checking coolant level 320
Messages in display 390–392
Temperature 311
Temperature indicator 137
Warning lamp 371
Coolants 477
Corner-illuminating front fog lamps* 131
Replacing bulbs 428, 429
Cruise control 263
Canceling 265
Cruise control lever 263
Current speed 264
Fine adjustment 266
Higher speed 265
Last stored speed
(“Resume” function) 266
Slower speed 266
Cup holder 279
Curb weight 347D
Date 158
Date, Setting 159, 160
Daytime running lamp mode 128
Setting 160, 161
Deep water see Standing water
Defogging
Windshield 194, 204
Defrosting, Front 193, 204
Defrosting, Rear 187
Delayed shut-off
Exterior lamps 162
Interior lighting 163
Department of Transportation see DOT
Difficulties
With starting 52
Digital speedometer 145
Dimensions, Vehicle 471
Direction of rotation (tires) 326
Displays
Digital speedometer 145
Lap analysis 149
Maintenance service indicator 353
Messages in display 378
Multifunction display 139
Outside temperature 138

490 Index
KEYLESS-GO* 101
Batteries in SmartKey 107
Battery check lamp, SmartKey 105
Factory setting 104, 106
Ignition 38
Important notes 103
Lock button 62
Locking/unlocking 35, 62, 101
Locking/unlocking,
Global setting 104, 105
Locking/unlocking,
Global with lock button
on trunk lid 106
Locking/unlocking,
Selective setting 105, 106
Loss of key 107
Messages in display 395, 396
Remote control 101
Start/stop button 37
Starting the engine 51
Turning off the engine 60
Unlocking/opening trunk lid 107
Kickdown 174
Kilopascal 348L
Labels 462
Certification 462
Emission control information 463
Vacuum line routing diagram 463
Lamp sensor see Light sensor
Lamps, exterior 427
Light sensor 396
Messages in display 397–400
Lamps, indicator and warning
ABS 27, 366
Battery (SmartKey) 100, 105
Brakes 27, 368
Center console 376–377
CHECK ENGINE 369, 370
Coolant 371
Coolant temperature 27, 137
Distance warning 27
Engine diagnostics 369, 370
Engine malfunction 27, 369, 370
ESP
®27, 372
Fog lamps 130
Front passenger front air bag off 69
Front passenger front
air bag off indicator lamp 376
Fuel reserve 27, 373High beam headlamp 27
Instrument cluster 366–375
Low beam headlamp 27
Parktronic system*
(CLK 63 AMG (USA),
Canada all vehicles)
warning indicators 269
Roll bar 373
Seat belt telltale 27, 78
SRS 27, 65, 375
Turn signals 27
Language, Setting 156
LATCH-type child seat anchors see
Children in the vehicle
License plate lamps
Messages in display 398
Replacing bulbs 428, 433
Light alloy wheels, cleaning 362
Light sensor
Messages in display 396
Lighter see Cigarette lighter
Lighting, Exterior and interior 126
Limp-home mode 183
Loading
Ski sack* (Canada only) 271
Loading see Vehicle loading