Page 351 of 456
350 Practical hintsWhat to do if …?Display
Possible cause/consequence
Possible solution
Ï
COOLANT
VISIT WORKSHOP
The cooling fan for the coolant is malfunc-
tioning.
Observe the coolant temperature display.
Have the fan replaced as soon as possi-
ble.
Î
CRUISE CONTROL
DRIVE TO WORKSHOP
Cruise control or Distronic* is malfunc-
tioning.
Have cruise control or Distronic*
checked by an authorized Mercedes-Benz
Center.
G
DISPLAY DEFECTIVE
VISIT WORKSHOP
The instrument cluster display is malfunc-
tioning.
Continue driving with added caution.
Visit an authorized Mercedes-Benz
Center as soon as possible.
±
DISPLAY DEFECTIVE
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
DOOR OPEN
You are attempting to drive with one or
more doors open.
Close the doors.
Page 420 of 456

419 Technical data
Fuels, coolants, lubricants, etc.
Model
Capacity
Fuels, coolants, lubricants, etc.
Cooling system
CL 500
CL 55 AMG
CL 600
CL 65 AMG
approx. 12.15 US qt (11.5 l)
approx. 12.68 US qt (12.0 l)
approx. 15.85 US qt (15.0 l)
approx. 16.18 US qt (15.3 l)
MB 325.0 Anticorrosion/Antifreeze
Low temperature cooling system
CL 600
CL 65 AMG
2.3 US qt (2.2 l)
3.06 US qt (2.9 l)
MB 325.0 Anticorrosion/Antifreeze
Fuel tank
23.2 US gal (88.0 l)
Premium unleaded gasoline:
Minimum Posted Octane 91
(Avg.of96RON/86MON)
including a reserve of
CL 500 and CL 600
2.9 US gal (11.0 l)
including a reserve of
CL 55 AMG and CL 65 AMG
3.7 US gal (14.0 l)
Air conditioning system
R-134a refrigerant and special PAG
lubricant oil (never R-12)
Windshield washer and
headlamp cleaning system
7.1 US qt (6.7 l)
MB Windshield Washer Concentrate
1
1Use MB Windshield Washer Concentrate “S” and water for temperatures above freezing or MB Windshield Washer Concentrate “S” and commercially available pre-
mixed windshield washer solvent/antifreeze for temperatures below freezing point. Follow suggested mixing ratios (page 425).
Page 423 of 456

422 Technical dataFuels, coolants, lubricants, etc.Gasoline additives
A major concern among engine manufac-
turers is carbon build-up caused by gaso-
line. Mercedes-Benz recommends only the
use of quality gasoline containing additives
that prevent the build-up of carbon depos-
its.
After an extended period of using fuels
without such additives, carbon deposits
can build up especially on the intake valves
and in the combustion area, leading to en-
gine performance problems such as:
Warm-up hesitation
Unstable idle
Knocking/pinging
Misfire
Power lossIn areas where carbon deposits may be en-
countered due to lack of availability of gas-
olines which contain these additives,
Mercedes-Benz recommends the use of
additives approved by us for use on
Mercedes-Benz vehicles. Refer to Factory
Approved Service Products Pamphlet for a
listing of approved product(s). Follow di-
rections on product label.
Do not blend other fuel additives with fuel.
This only results in unnecessary cost and
may be harmful to the engine operation.
Damage or malfunction resulting from
poor fuel quality or from blending addition-
al fuel additives other than those tested
and approved by us for use on
Mercedes-Benz vehicles listed in the
Factory Approved Service Products
Pamphlet are not covered by the
Mercedes-Benz Limited Warranty.
Coolants
The engine coolant is a mixture of water
and anticorrosion/antifreeze, which pro-
vides:
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 cor-
rosion protection.
If the antifreeze mixture is effective to
–22°F (–30°C), the boiling point of the
coolant 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.
Page 424 of 456

423 Technical data
Fuels, coolants, lubricants, etc.
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
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% anticor-
rosion/antifreeze [equivalent to freeze
protection to approx. –22°F (–30°C)]. If
you use a solution that is more than 55%
anticorrosion/antifreeze [freeze protec-
tion 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, 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 anticorrosion/
antifreeze coolant will result in a signifi-
cantly 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.
Page 425 of 456
424 Technical dataFuels, coolants, lubricants, etc.Anticorrosion/antifreeze quantityModel
Approx. freeze protection
– 35°F (– 37°C)
– 49°F (– 45°C)
CL 500
6.1 US qt (5.75 l)
6.7 US qt (6.3 l)
CL 600 (main cooling system)
7.9 US qt (7.5 l)
8.7 US qt (8.25 l)
CL 600 (low temperature cooling system)
1.2 US qt (1.1 l)
1.3 US qt (1.2 l)
CL 55 AMG
6.34 US qt (6.0 l)
6.97 US qt (6.6 l)
CL 65 AMG (main cooling system)
8.08 US qt (7.65 l)
8.9 US qt (8.42 l)
CL 65 AMG (low temperature cooling system)
1.53 US qt (1.45 l)
1.7 US qt (1.6 l)
Page 434 of 456

433 Index
A
ABC 220, 427
Messages in display 339
Setting vehicle level 221
Suspension tuning 220
ABS 80, 427
Indicator lamp 328
Messages in display 341
Accelerator position, Automatic
transmission 169
Accessory weight 309
Accident 56
Active Body Control see ABC
Additional turn signals
Replacing bulbs 379
Air bags 63
BabySmart
TM air bag deactivation
system 74, 427
Children 64
Front 67
Safety guidelines 66
Side impact 67
Window curtain 68
Air cleaner see Air filter
Air conditioning refrigerant 419, 420Air conditioning system see Automatic cli-
mate control
Air conditioning, Cooling 193
Air distribution 188
Air filter
Message in display 341
Air recirculation mode 190
Air vents 185, 196
Air volume 189
Alarm system see Anti-theft alarm system
Alignment bolt (vehicle tool kit) 370,
389, 427
Anticorrosion/antifreeze 423, 424
Antiglare, Rear view mirror 178
Antilock Brake System see ABS
Anti-theft alarm systems
Indicator lamp 86
Anti-theft systems 85
Anti-theft alarm system 85
Immobilizer 85
Tow-away alarm 87
Aquaplaning see Hydroplaning
Armrest 232, 233
Ashtrays 237
Aspect ratio 309AUDIO menu 142
Audio system
CD changer operating mode 145
Auto-dimming, Rear view mirror 178
Automatic central locking, Control
system 110, 162
Automatic climate control 184
Air conditioning refrigerant 420
Air conditioning, Cooling 193
Air distribution 188
Air recirculation mode 190
Air vents 185, 196
Air volume 189
Charcoal filter 191
Control panel 185
Deactivating system 187
Defogging 188
Defrosting 189
MAXCOOL maximum cooling 189
Rear window defroster 193
Residual engine heat and ventilation
(REST) 194
Setting the temperature 187
Automatic headlamp mode 126
Automatic lighting control, Interior
lighting 131