2007 MERCEDES-BENZ CLS550 air conditioning

202 Controls in detail4-zone automatic climate controlConvenience closing
Press button, (
page 192) or
(
page 193) for approximately
2 seconds.
The windows and tilt/sliding sunroof
will close. You can release button,
once the closing procedure has begun.
The windows and tilt/sliding sunroof
continue closing until they are fully
closed. The indicator lamp on the but-
ton comes on. The air recirculation
mode is activated.Convenience opening

Press button, for approximately
2 seconds.
The windows and tilt/sliding sunroof
will return to their previous position.
You can release button, once the open-
ing procedure has begun. The windows
and tilt/sliding sunroof continue open-
ing until they have reached their previ-
ous position. The indicator lamp on the
button goes out. The air recirculation
mode is deactivated.Combination filter with
pollutant-sensitive air-recirculation
mode
The combination filter reduces pollutants
and unpleasant odors in the outside air.
The pollutant-sensitive air-recirculation
mode automatically switches off the
supply of outside air when pollutants are
detected in the air.
i
A window or tilt/sliding sunroof will only re-
turn to its previous position if it has not been
moved to another position using the respective
window switch or tilt/sliding sunroof switch af-
ter it was closed with button,.
A window or tilt/sliding sunroof that has been
moved will remain in its current position if
button, is used to re-open the remaining
windows or tilt/sliding sunroof.
i
The pollutant-sensitive air-recirculation
mode is not possible if you have switched off the
air conditioning or if the temperature falls below
41°F (5°C).

203 Controls in detail
4-zone automatic climate control
Air conditioning
The cooling function, only operational
when the engine is running, cools the vehi-
cle interior down to the selected tempera-
ture. The cooling function also
dehumidifies the air in the vehicle interior,
thus preventing the windows from fogging
up.Deactivating
It is possible to deactivate the air condi-
tioning (cooling) function of the climate
control system. The air in the vehicle will
then no longer be cooled or dehumidified.

Press button2 (
page 192) or
(
page 193).
The indicator lamp on the button goes
out.
Activating
Moist air can fog up the windows. You can
dehumidify the air with the air condition-
ing.

Press button2 (
page 192) or
(
page 193) again.
The indicator lamp on the button
comes on.
The air conditioning uses the refrigerant
R134a. This refrigerant is free of CFCs
which are harmful to the ozone layer.Residual heat and ventilation
(Canada only)
With the engine switched off, it is possible
to continue to heat or ventilate the interior
for up to 30 minutes. This feature makes
use of the residual heat produced by the
engine.
i
Condensation may drip out from underneath
the vehicle. This is normal and not an indication
of a malfunction.Warning!
G
If you turn off the cooling function, the
vehicle will not be cooled when weather
conditions are warm. The windows can fog
up more quickly. Window fogging may
impair visibility and endanger you and
others.
!
If the air conditioning cannot be turned on
again, this indicates that the air conditioning is
losing refrigerant. The compressor has turned it-
self off.
Have the air conditioning checked at the nearest
authorized Mercedes-Benz Center.
i
If you switch on the residual heat function
when temperatures are high, only the ventilation
will be switched on.
i
Regardless of the selected air volume, the
blower operates at low speed.

205 Controls in detail
4-zone automatic climate control
Setting the temperature
Use temperature control rocker
switches4 and6 to separately adjust
the air temperature on each side of the
rear passenger compartment.
You should raise or lower the temperature
setting in small increments, preferably
starting at 72°F (22°C). The adjusted tem-
perature appears in the display5. The
rear climate control will adjust to the set
temperature as fast as possible.1Temperature, left
2Temperature, right

Adjust the temperature to the desired
setting for each side of the passenger
compartment using the left and right
temperature buttons.
The temperature in the rear passenger
compartment is adjusted automatical-
ly.Adjusting air distribution

Move the slider for the left center
vent1 or right center vent2 to the
left, right, up, or down.
The air flow is directed in the
corresponding direction.
Adjusting air volume

Turn thumbwheel3 or7
(page 204) up or down.
The air volume is increased or
decreased.
i
You can also adjust the rear temperature us-
ing the front climate control panel (
page 192)
or (
page 193).
i
The rear climate control will not cool the air
when the air conditioning is switched off
(
page 203).
i
For draft-free ventilation, push slides1
and2 (
page 204) upward.

323 Operation
Tires and wheels
Tire and loading terminology
Accessory weight
The combined weight (in excess of those
standard items which may be replaced) of
automatic transmission, power steering,
power brakes, power windows, power
seats, 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), or kilopascal (kPa) or
bars.
Aspect ratio
Dimensional relationship between tire
section height and section width
expressed in percentage.Bar
Another 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 driv-
en no more than 1 mile (1.6 km).
Curb weight
The weight of a motor vehicle with stan-
dard equipment including the maximum
capacity of fuel, oil, and coolant, and, if so
equipped, air conditioning and additional
optional equipment, but without passen-
gers and cargo.DOT (D
epartment o
f T
ransportation)
A tire branding symbol which denotes the
tire meets requirements of the
U.S. Department of Transportation.
GAWR (G
ross A
xle W
eight R
ating)
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 (G
ross V
ehicle W
eight)
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.

436 Technical dataLayout of poly-V-belt driveCLS 550
1Idler pulley
2Idler pulley
3Automatic belt tensioner
4Power steering pump
5Air conditioning compressor
6Crankshaft
7Coolant pump
8Generator (alternator)
CLS 63 AMG
1Idler pulley
2Idler pulley
3Idler pulley
4Automatic belt tensioner
5Power steering pump
6Air conditioning compressor
7Crankshaft
8Coolant pump
9Generator (alternator)

450 Technical dataFuels, coolants, lubricants etc.
Model
Capacity
Fuels, coolants, lubricants etc.
Power steering
CLS 550
approx. 1.0 US qt (0.9 l)
MB Power Steering Fluid (Pentosin CHF 11S
or, depending on vehicle production date,
Chevron Texaco PSF 9109)
1
1For detailed information, please refer to the Factory Approved Service Products pamphlet (USA only) or contact an authorized Mercedes-Benz Center.
CLS 63 AMG
approx. 1.3 US qt (1.2 l)
Front wheel hubs
CLS 550
approx. 3.0 oz (85 g) each
High temperature roller bearing grease
CLS 63 AMG
approx. 3.2 oz (90 g) each
Brake system
All models
0.63 US qt (0.6 l)
MB Brake Fluid (DOT 4+)
Cooling system
CLS 550
11.9 US qt (11.3 l)
MB 325.0 Anticorrosion/Antifreeze
CLS 63 AMG
12.5 US qt (11.8 l)
Fuel tank
All models
21.12 US gal (80.0 l)
Premium unleaded gasoline
Minimum Posted Octane 91
(Avg. of 96 RON/86 MON)
including a reserve of
CLS 550
2.38 US gal (9.0 l)
CLS 63 AMG
3.7 US gal (14.0 l)
Air conditioning system
All models
R-134a refrigerant and special PAG lubricant
oil (never R-12)
Windshield washer system
All models
4.8 US qt (4.5 l)
MB Windshield Washer Concentrate
2
2Use MB Windshield Washer Concentrate “MB SummerFit” and water for temperatures above freezing 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 456).Windshield washer and head-
lamp cleaning* system
All models
6.9 US qt (6.5 l)

451 Technical data
Fuels, coolants, lubricants etc.
Engine oils
Engine oils are specifically tested for their
suitability in our engines and durability for
our service intervals. Therefore, only use
approved engine oils and oil filters re-
quired for vehicles with Maintenance Sys-
tem (U.S. vehicles) or FSS PLUS (Canada
vehicles). For a listing of approved engine
oils and oil filters, refer to the Factory Ap-
proved Service Products pamphlet (USA
only), or contact an authorized
Mercedes-Benz Center.
Engine oil additivesAir conditioning refrigerant
R-134a (HFC) refrigerant and special PAG
lubricating oil are used in the air condition-
ing system.
Brake fluid
Only brake fluid approved by
Mercedes-Benz is recommended. Your
authorized Mercedes-Benz Center will pro-
vide you with additional information.
!
Using engine oils and oil filters of specifica-
tion other than those expressly required for the
Maintenance System (U.S. vehicles) or
FSS PLUS (Canada vehicles), or changing of oil
and oil filter at change intervals longer than
those called for by the Maintenance System
(U.S. vehicles) or FSS PLUS (Canada vehicles)
will result in engine or emission control system
damage not covered by the Mercedes-Benz Lim-
ited Warranty.Please follow Maintenance System (U.S. vehi-
cles) or FSS PLUS (Canada vehicles) recommen-
dations for scheduled oil changes. Failure to do
so could result in engine or emission control sys-
tem damage not covered by the Mercedes-Benz
Limited Warranty.
!
Do not blend oil additives with engine oil.
They may damage the engine.
Damage or malfunctions resulting from blending
oil additives are not covered by the
Mercedes-Benz Limited Warranty.
!
Never use R-12 (CFC) or mineral-based lu-
bricating oil. Otherwise damage to the system
will occur.
Warning!
G
During vehicle operation, the boiling point of
the brake fluid is continuously reduced
through the absorption of moisture from the
atmosphere. Under extremely strenuous op-
erating conditions, this moisture content
can lead to the formation of bubbles in the
system, thus reducing the system’s efficien-
cy.
Therefore, the brake fluid must be replaced
regularly. Refer to your vehicle’s Mainte-
nance Booklet for replacement interval.

457 Index
A
ABS 91
Indicator lamp 342
Messages in display 358, 372
Accelerator position, automatic
transmission 175
Accessory weight 323
Accident 58
Active Bi-Xenon headlamps see Head-
lamps
Active head restraints 83
resetting 401
Adaptive Damping System 231
Adjusting 41
ADS 231
Air bags 66
Children 67
Front, Driver 69
Front, Passenger 69
Knee bag 70
Safety guidelines 68
Side impact 70
Window curtain 70Air conditioning refrigerant 451
Air conditioning system see Climate con-
trol system 203
Air conditioning, Cooling 194, 203
Air distribution 197
Air pressure 323
Air pressure see Tire inflation pressure
Air pump, electric 417
Air recirculation mode 200
Air vents 191
Air volume 198
Airmatic DC (Dual Control) 231
Message in display 389, 390
Suspension tuning 231
Vehicle level control 231
Alarm
Audible alarm and flashing exterior
lamps (Panic alarm) 90
Canceling 100
Visual 99
Alarm system see Anti-theft systems
Alignment bolt (vehicle tool kit) 393, 415AMG menu 147
Lap analysis 150
Overall analysis 150
RACETIMER 148
Vehicle supply voltage 148
Anticorrosion/antifreeze 455
Antilock Brake System see ABS
Anti-theft systems 99
Anti-theft alarm system 99
Immobilizer 99
Aquaplaning see Hydroplaning
Ashtrays 249
Aspect ratio 323
AUDIO menu 150
Audio search function 165
Audio system
CD mode 151
Selecting radio station 151
Selecting satellite radio station* 151
Auto-dimming, Rear view mirrors 185
Automatic central locking, Control
system 165