2011 MERCEDES-BENZ CLS fuel cap

affect handling and fuel economy, and are
more likely to fail from being overheated.
Do not overinflate tires. Overinflated tires can
adversely affect handling and ride comfort,
wear unevenly, increase stopping distance,
and result in sudden deflation (blowout)
because they are more likely to become
punctured or damaged by road debris,
potholes etc.
i
For illustration purposes only. Actual data
on tires are specific to each vehicle and
may vary from data shown in above
illustration.
This is the maximum permissible tire inflation
pressure : for the tire.
Always follow the recommended tire inflation
pressure ( Y page 183) for proper tire
inflation. Loading the vehicle
Two labels on your vehicle show how much
weight it may properly carry.
(1) The Tire and Loading Information placard can be found on the driver’s door
B-pillar. This placard tells you important
information about the number of people
that can be in the vehicle and the total
weight that can be carried in the vehicle.
It also contains information on the proper
size and recommended tire inflation pressures for the original equipment tires
on your vehicle.
(2) The certification label, also found on the driver’s door B-pillar. It tells you about the
gross weight capacity of your vehicle,
called the Gross Vehicle Weight Rating
(GVWR). The GVWR includes the weight
of the vehicle, all occupants, fuel and
cargo. The certification label also tells
you about the front and rear axle weight
capacity, called the Gross Axle Weight
Rating (GAWR).
The GAWR is the total allowable weight
that can be carried by a single axle (front
or rear). Never exceed the GVWR or
GAWR for either the front axle or rear
axle. :
Driver’s door B-pillar
Following is a discussion on how to work with
the information contained on the Tire and
Loading Information placard with regards to
loading your vehicle.
Tire and Loading Information G
Warning!
Do not overload the tires by exceeding the
specified load limit as indicated on the Tire
and Loading Information placard on the
driver’s door B-pillar. Overloading the tires
can overheat them, possibly causing a
blowout. Overloading the tires can also result
in handling or steering problems, or brake
failure. Tires and wheels
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radio, and heater, to the extent that these
items are available as factory-installed
equipment (whether installed or not).
Air pressure
The amount of air inside the tire pressing
outward on each square inch of the tire. Air
pressure is expressed in pounds per square
inch (psi), kilopascal (kPa), or bar.
Aspect ratio
Dimensional relationship between tire
section height and section width expressed
in percentage.
Bar
Metric unit for air pressure. There are
14.5038 pounds per square inch (psi) to
1
bar; there are 100 kilopascals (kPa) to 1 bar.
Bead The tire bead contains steel wires wrapped by
steel cords that hold the tire onto the rim.
Cold tire inflation pressure
Tire inflation pressure when your vehicle has
been sitting for at least 3 hours or driven no
more than 1 mile (1.6 km).
Curb weight
The weight of a motor vehicle with standard
equipment including the maximum capacity
of fuel, oil, and coolant, and, if so equipped,
air conditioning and additional optional
equipment, but without passengers and
cargo.
DOT (Department of Transportation)
A tire branding symbol which denotes the tire
meets requirements of the U.S. Department
of Transportation. GAWR (Gross Axle Weight Rating) The GAWR is the maximum permissible axle
weight.

The gross vehicle weight on each axle
must never exceed the GAWR for the front
and rear axle indicated on the certification
label located on the driver’s door B-pillar.
GVW (Gross Vehicle Weight) The GVW comprises the weight of the vehicle
including fuel, tools, spare wheel, installed
accessories, passengers and cargo and, if
applicable,

trailer tongue load. The GVW must
never exceed the GVWR indicated on the
certification label located on the driver’s door
B-pillar.
GVWR (Gross Vehicle Weight Rating) This is the maximum permissible vehicle
weight of the fully loaded vehicle (weight of
the

vehicle including all options, passengers,
fuel, and cargo and, if applicable, trailer
tongue load). It is indicated on the
certification label located on the driver’s door
B-pillar.
Kilopascal (kPa) Metric unit for air pressure. There are 6.9 kPa
to 1 psi; another metric unit for air pressure
is bar. There are 100 kilopascals (kPa) to
1 bar.
Load index
Numerical code associated with the
maximum load a tire can support.
Maximum load rating
The maximum load in kilograms and pounds
that can be carried by the tire.
Maximum loaded vehicle weight
The sum of curb weight, accessory weight,
total load limit, and production options
weight.206
Tires and wheels
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Maximum permissible tire inflation
pressure
This number is the greatest amount of air
pressure that should ever be put in the tire.
Normal occupant weight
The number of occupants the vehicle is
designed to seat, multiplied by 68 kilograms
(150 lb).
Occupant distribution
The distribution of occupants in a vehicle at
their designated seating positions.
Production options weight
The combined weight of those installed
regular production options weighing over
5 lbs (2.3 kilograms) in excess of those
standard items which they replace, not
previously considered in curb weight or
accessory weight, including heavy duty
brakes, ride levelers, roof rack, heavy duty
battery, and special trim.
PSI (Pounds per square inch)
A standard unit of measure for air pressure.
Recommended tire inflation pressure
The recommended tire inflation pressure for
normal
driving conditions is listed on the Tire
and Loading Information placard located on
the driver’s door B-pillar. It provides best
handling, tread life and riding comfort.
Supplemental information pertaining to
special driving situations can be found on the
tire inflation pressure label on the inside of
the fuel filler flap.
Rim A metal support for a tire or a tire and tube
assembly upon which the tire beads are
seated. Sidewall The portion of a tire between the tread and
the bead.
TIN (Tire Identification Number)
Unique identifier which facilitates efforts by
tire manufacturers to notify purchasers in
recall situations or other safety matters
concerning tires and gives purchasers the
means

to easily identify such tires. The TIN is
comprised of “Manufacturer’s identification
mark”, “Tire size”, “Tire type code” and “Date
of manufacture”.
Tire ply composition and material used This indicates the number of plies or the
number of layers of rubber-coated fabric in
the tire tread and sidewall. Tire
manufacturers also must indicate the ply
materials in the tire and sidewall, which
include steel, nylon, polyester, and others.
Tire speed rating
Part of tire designation (speed symbol);
indicates the speed range for which a tire is
approved.
Total load limit
Rated cargo and luggage load plus
68 kilograms (150 lb) times the vehicle’s
designated seating capacity.
Traction
The adhesive friction of a tire on a surface on
which

it moves. The amount of grip provided.
Tread The portion of a tire that comes into contact
with the road. Tires and wheels
207
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Display messages
Possible causes/consequences and
X Solutions# Low
Voltage
Start
Engine The battery has insufficient voltage.
X
Start the engine. 4 Check oil
level at
next
refueling. The engine oil has dropped to a critical level.
X
Check the engine oil level ( Y page 179) and add engine oil
as required ( Y page 180).
X If you must add engine oil frequently, have the engine
checked for possible leaks. If the message
Check
oil level at next
refueling. appears while the engine is
running and at operating temperature, the
engine oil level has dropped to approximately
the minimum level.
The message will be stored in the vehicle
status message memory after you have
cleared it from the multifunction display.
Visually check for oil leaks. If there are no
obvious oil leaks, drive to the nearest service
station to refill your engine oil to the required
level. For information on approved engine oils
contact
an authorized Mercedes-Benz Center
or visit www.mbusa.com (USA only).
! Engine oil level warnings should not be
ignored. Extended driving with the symbol
displayed could result in serious engine
damage that is not covered by the
Mercedes-Benz Limited Warranty. Display messages
Possible causes/consequences and
X SolutionsC The fuel level is low.
X
Refuel at the next gas station. 7 Reserve
Fuel The fuel level has dropped below the reserve mark.
X
Refuel at the next gas station. 7 Gas Cap
Is Open A loss of pressure has been detected in the fuel system. The
fuel cap may not be closed properly or the fuel system may
be leaking.
X
Check the fuel cap ( Y page 177).
X If it is not closed properly: Close the fuel cap.
X If it is closed properly: Have the fuel system checked at
an authorized Mercedes-Benz Center. ¸ Replace
Air Filter The air filter is clogged.
X
Have the air filter checked at an authorized Mercedes-Benz
Center. 246
Vehicle status messages in the multifunction display
Practical hints
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Engine
Problem
Possible causes/consequences and
X Solutions= (USA only)
; (Canada only)
The yellow engine
malfunction indicator
lamp comes on when
the engine is running. There may be a malfunction in
R
the fuel management system
R the ignition system
R the emission control system
R systems which affect emissions
Such malfunctions may result in excessive emissions values and
may
switch the engine to limp-home (emergency operation) mode.
X Have the vehicle checked as soon as possible at an authorized
Mercedes-Benz Center.
i Some states may by law require you to visit a workshop as
soon

as the engine malfunction indicator lamp comes on. Check
local requirements. = (USA only)
; (Canada only)
The yellow engine
malfunction indicator
lamp comes on when
the engine is running. A 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.
X
Check the fuel cap ( Y page 176).
X If it is not closed properly: Close the fuel cap.
X If it is closed properly: Have the fuel system checked by an
authorized Mercedes-Benz Center. ?
The red coolant
temperature
warning lamp
comes on when
the engine is
running. There is insufficient coolant in the reservoir.
If this warning lamp comes on frequently, there is a leak in the
cooling system.
If the coolant level is correct, the electric radiator fan may be
broken.
X
Immediately add coolant to prevent engine from overheating
(Y page 180).
X Have the cooling system checked.
X If the coolant temperature is below 248‡ (120†), you can
continue driving to the nearest authorized Mercedes-Benz
Center.
X Avoid high engine loads (e.g. driving uphill) and stop-and-go
driving. What to do if …
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Spare wheel
! Compare the recommended tire inflation pressure for your vehicle with the tire inflation
pressure on the yellow label located on the spare wheel rim.
If
the tire inflation pressure on the yellow label on the spare wheel rim differs from the values
given in this Operator’s Manual, inflate the tire to the recommended tire inflation pressure
given on the yellow label on the spare wheel rim.
i Please note that the tire inflation pressure of the spare wheel differs from the tire inflation
pressure of the road tires. CLS 550 (all models) CLS 63 AMG CLS 63 AMG
(Performance Package)
Rim (steel)
Wheel offset
4.0 B x 17 H2
1.34 in (34 mm) — —
Rim (light alloy)
Wheel offset
— 6.0 B x 18 H2
0.98 in (25 mm) 6.5 B x 19 H2
0.55 in (14 mm)
Minispare tire
32 T 155/70 R17 110M — —
Collapsible tire
32 — 175/55-18 95P 175/50-19 97P
Recommended
tire inflation
pressure
61 psi (4.2 bar) 51 psi (3.5 bar) 51 psi (3.5 bar)
Fuels, coolants, lubricants, etc.
Capacities
Vehicle components and their respective
lubricants must match. Therefore only use
products tested and approved by Mercedes-
Benz.
For information on tested and approved
products, contact an authorized Mercedes-
Benz Center or visit www.mbusa.com (USA
only). G
Warning!
Comply with all valid regulations with respect
to handling, storing, and disposing of service fluids. Otherwise you could endanger persons
or the environment.
Keep service fluids out of the reach of
children.
For health reasons, you should prevent
service

fluids from coming into direct contact
with your skin or clothing.
If a service fluid is swallowed, contact a
physician immediately.
32 Must not be used with snow chains. 296
Fuels, coolants, lubricants, etc.
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Model Capacity Fuels, coolants,
lubricants, etc.
Engine with oil
filter
CLS 550 9.0 US qt (8.5 l) Approved engine
oils
CLS 63 AMG
33 9.3 US qt (8.8 l)
Automatic
transmission
CLS 550 9.7 US qt (9.2 l) MB Automatic
Transmission Fluid
CLS 63 AMG 9.3 US qt (8.8 l)
Rear axle
CLS 550 1.3 US qt (1.2 l) MB Hypoid Gear Oil
(SAE 85W-90)
CLS 63 AMG 1.3 US qt (1.2 l) Fuchs Titan
EG 5010 D
CLS 63 AMG
34 1.3 US qt (1.2 l) Castrol SAF-XJ
(SAE 75W-140)
Power steering
CLS 550 approx. 1.0 US qt (0.9 l) MB Power Steering
Fluid (Chevron
Texaco PSF 9109)
CLS 63 AMG approx. 1.3 US qt (1.2 l)
Brake system
All models 0.63 US qt (0.6 l) MB Brake Fluid
(DOT 4+)
Cooling system
CLS 550 approx. 11.9 US qt (11.3 l) MB 325.0
Anticorrosion/
Antifreeze
CLS 63 AMG approx. 12.5 US qt (11.8 l)
Fuel tank
All models 21.1 US gal (80.0 l) Premium unleaded
gasoline (Minimum
Posted Octane 91
[Avg. of
96 RON/86 MON])
Fuel tank
reserve
CLS 550 approx. 2.4 US gal (9.0 l)
CLS 63 AMG approx. 3.7 US gal (14.0 l)
Air
conditioning
system
All models — R134a refrigerant
and special
PAG lubricant oil
(never R 12)
Washer system
All models 4.8 US qt (4.5 l) MB Windshield
Washer
Concentrate
35
(Y page 302)
Washer fluid mixing
ratio ( Y page 302) Washer system
and headlamp
cleaning
system
All models 6.9 US qt (6.5 l)
33
Engine with oil cooler.
34 With Performance Package.
35 Mixed with water or commercially available premixed washer solvent/antifreeze. Fuels, coolants, lubricants, etc.
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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 engine
performance problems such as:
R
Warm-up hesitation
R Unstable idle
R Knocking/pinging
R Misfire
R Power loss
In areas where carbon deposits may be
encountered due to lack of availability of
gasoline which contains these additives, the
use of Mercedes-Benz approved additives is
recommended.
Contact
an authorized Mercedes-Benz Center
or visit www.mbusa.com (USA only) for a
listing of approved products. Follow
directions on the 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 additional
fuel additives other than those tested and
approved by us for use on Mercedes-Benz
vehicles are not covered by the Mercedes-
Benz Limited Warranty or by any pre-owned
or Extended Limited Warranties. Coolants
The engine coolant is a mixture of water and
anticorrosion/antifreeze, which provides:
R Corrosion protection
R Freeze protection
R Boiling

protection (by increasing the boiling
point)
The cooling system was filled at the factory
with a coolant providing freeze protection to
approximately -35‡ (-37†) and corrosion
protection. !
Add premixed coolant solution only.
Adding

water and MB 325.0 Anticorrosion/
Antifreeze separately from each other,
could cause engine damage not covered by
the Mercedes-Benz Limited Warranty.
If the antifreeze mixture is effective to -35‡
(-37†), the boiling point of the coolant in the
pressurized cooling system is reached at
approximately 266‡ (130†).
The coolant solution must be used year round
to provide the necessary corrosion protection
and increase boil-over protection. Refer to
the 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 are used to renew the
coolant concentration or bring it back up to
the proper level.
For information on other Mercedes-Benz
approved products of equal specification,
contact an authorized Mercedes-Benz Center
or visit www.mbusa.com (USA only).
To provide important corrosion protection,
the solution must be at least 50%
anticorrosion/antifreeze (equivalent to
freeze protection to approximately -35‡
[-37†]).
If you use a solution that is more than 55%
anticorrosion/antifreeze (freeze protection
to approximately -49‡ [-45†]), 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. 300
Fuels, coolants, lubricants, etc.
Technical data
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