Page 380 of 498

379 Practical hints
What to do if …
During severe operation conditions and
stop-and-go city traffic, the coolant tem-
perature may rise close to 248°F (120°C).
Display symbol
Display messages
Possible cause/consequence
Possible solution
Ï
Coolant
Stop, engine off
The coolant is too hot.
Stop the vehicle in a safe location.
Only start the engine again after the
message disappears. You could other-
wise damage the engine.
Warning!
G
Driving when your engine is badly overheat-
ed 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 engine 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
damage which is not covered by the
Mercedes-Benz Limited Warranty.
Page 381 of 498

380 Practical hintsWhat to do if …Display symbol
Display messages
Possible cause/consequence
Possible solution
Ï
Coolant
Stop, engine off
The poly-V-belt could be broken.
Stop the vehicle in a safe location and immedi-
ately 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 Warranty.
Observe the coolant temperature indicator in the
instrument 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 indicator in the
instrument cluster (
page 24).
Have the fan replaced as soon as possible.
Page 382 of 498
381 Practical hints
What to do if …
Display symbol
Display messages
Possible cause/consequence
Possible solution
G
Display malfunction
Visit workshop
The displays for several systems have
malfunctioned. Some systems them-
selves may also have malfunctioned.
Continue driving with added caution.
When the multifunction display is mal-
functioning, warnings and malfunc-
tion messages might not be
displayed.
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.
Engine
Service
There may be a malfunction in:
the fuel injection system
the ignition system
the exhaust system
Have the engine checked as soon as
possible by an authorized
Mercedes-Benz Center.
Page 444 of 498
443 Technical data
Parts service
Warranty coverage
Identification labels
Layout of poly-V-belt drive
Engine
Rims and tires
Electrical system
Main dimensions
Weights
Fuels, coolants, lubricants etc.
Page 448 of 498
447 Technical data
Layout of poly-V-belt drive
Layout of poly-V-belt drive
CLS 500
1Automatic belt tensioner
2Power steering pump
3Air conditioning compressor
4Crankshaft
5Coolant pump
6Generator (alternator)
7Idler pulley
CLS 55 AMGThe CLS 55 AMG has two poly-V-belts
(belt one shown in purple/belt two shown
in black).1Idler pulley
2Automatic belt tensioner
3Power steering pump
4Air conditioning compressor
5Crankshaft
6Coolant pump
7Generator (alternator)
8Idler pulley
9Automatic belt tensioner
aSuper charger
Page 462 of 498
461 Technical data
Fuels, coolants, lubricants etc.
Fuels, coolants, lubricants etc.
CapacitiesVehicle components and their respective
lubricants must match. Therefore only use
products tested and approved by
Mercedes-Benz.Please refer to the Factory Approved Ser-
vice Products Pamphlet, or inquire at your
authorized Mercedes-Benz Center.
Model
Capacity
Fuels, coolants, lubricants etc.
Engine with oil filter
CLS 500
8.0 US qt (7.5 l)
Approved engine oils
CLS 55 AMG
9.0 US qt (8.5 l)
Automatic transmission
CLS 500
8.5 US qt (8.0 l)
MB Automatic Transmission Fluid
CLS 55 AMG
8.67 US qt (8.2 l)
Rear axle
1.37 US qt (1.3 l)
Hypoid gear oil SAE 85 W 90
Page 463 of 498
462 Technical dataFuels, 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. 3.0 oz (85 g) each
High temperature roller bearing grease
Brake system
1.1 US qt (1.05 l)
MB Brake Fluid (DOT 4+)
Cooling system
CLS 500
11.9 US qt (11.3 l)
MB 325.0 Anticorrosion/Antifreeze
CLS 55 AMG
13.84 US qt (13.1 l)
MB 325.0 Anticorrosion/Antifreeze
Fuel tank
21.12 US gal (80.0 l)
Premium unleaded gasoline
Minimum Posted Octane 91 (Avg. of 96
RON/86 MON)
including a reserve of
2.38 US gal (9.0 l)
Page 464 of 498
463 Technical data
Fuels, coolants, lubricants etc.
Model
Capacity
Fuels, coolants, lubricants etc.
Air conditioning system
R-134a refrigerant and special PAG lubricant oil
(never R-12)
Windshield washer and head-
lamp cleaning system
7.4 US qt (7.0 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 470).