2008 MERCEDES-BENZ CLS63AMG air conditioning

201 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 190) or
(
page 191).
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 190) or
(
page 191) 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.
iCondensation 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.
iIf you switch on the residual heat function
when temperatures are high, only the ventilation
will be switched on.
iRegardless of the selected air volume, the
blower operates at low speed.

203 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 display5. The rear
climate control will adjust to the set tem-
perature as fast as possible.
1Temperature, left
2Temperature, rightAdjust the temperature to the desired
setting for each side of the passenger
compartment using the left and right
temperature control rocker switches.
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 202) up or down.
The air volume is increased or
decreased.
Adjusting the rear settings with the
front control panel
You can adjust the temperature for the
rear climate control from the front climate
control panel.
Press button™ or 5
(
page 190) or (page 191).
The display switches over.
1Rear climate control display
iYou can also adjust the rear temperature us-
ing the front climate control panel (
page 190)
or (
page 191).iThe rear climate control will not cool the air
when the air conditioning is switched off
(
page 201).
iFor draft-free ventilation, push slides1
and2 (
page 202) upward.


324 Operation
Tires and wheels
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
driven 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 (Department of Transportation)
A tire branding symbol which denotes the
tire meets requirements of the
U.S. Department of Transportation.
GAWR (G
ross 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 (G
ross 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 (G
ross Vehicle Weight Rating)
This is the maximum permissible vehicle
weight of the fully loaded vehicle (weight of
the vehicle including all options, passen-
gers, fuel, and cargo and, if applicable,
trailer tongue load). It is indicated on certi-
fication label located on the driver’s door
B-pillar.
Kilopascal (kPa)
The metric unit for air pressure. There are
6.9 kPa to 1 psi; another metric unit for air
pressure is bars. There are
100 kilopascals (kPa) to 1 bar.
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.

436 Technical data
Layout of poly-V-belt drive
CLS 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)

449 Technical data
Fuels, coolants, lubricants etc.
ModelCapacityFuels, coolants, lubricants etc.
Power steeringCLS 550approx. 1.0 US qt (0.9 l)MB Power Steering Fluid (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 AMGapprox. 1.3 US qt (1.2 l)
Front wheel hubsCLS 550approx. 3.0 oz (85 g) eachHigh temperature roller bearing grease
CLS 63 AMGapprox. 3.2 oz (90 g) each
Brake systemAll models0.63 US qt (0.6 l)MB Brake Fluid (DOT 4+)
Cooling systemCLS 55011.9 US qt (11.3 l)MB 325.0 Anticorrosion/Antifreeze
CLS 63 AMG12.5 US qt (11.8 l)
Fuel tankAll models21.12 US gal (80.0 l)Premium unleaded gasoline:
Minimum Posted Octane 91
(Avg. of 96 RON/86 MON)
including a reserve ofCLS 5502.38 US gal (9.0 l)
CLS 63 AMG3.7 US gal (14.0 l)
Air conditioning systemAll modelsR-134a refrigerant and special PAG lubricant
oil (never R-12)
Washer system All models4.8 US qt (4.5 l)MB Windshield Washer Concentrate2
2Use MB Windshield Washer Concentrate “MB SummerFit” and water for temperatures above freezing or MB Windshield Washer Concentrate “MB SummerFit” and
commercially available premixed washer solvent/antifreeze for temperatures below freezing point. Follow suggested mixing ratios (page 455).
Washer and headlamp cleaning*
systemAll models6.9 US qt (6.5 l)

450 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. 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 additives
Air 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. Any
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, or changing of oil and oil
filter at change intervals longer than those called
for by the Maintenance System will result in en-
gine or emission control system damage not cov-
ered by the Mercedes-Benz Limited Warranty.Please follow Maintenance System 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 89
Indicator lamp 344
Messages in display 360, 374
Accelerator position, automatic
transmission 173
Accessory weight 323
Accident 58
Active Bi-Xenon headlamps see Head-
lamps
Active head restraints 81
resetting 401
Adaptive Damping System 230
Adjusting 41
ADS 230
Air bags 66
Children 67
Front, Driver 69
Front, Passenger 69
Knee bag 70
Safety guidelines 68
Side impact 70
Window curtain 70
Air conditioning refrigerant 450
Air conditioning system see Climate con-
trol system 201Air conditioning, Cooling 192, 201
Air distribution 195
Air pressure 323
Air pressure see Tire inflation pressure
Air pump, electric 417
Air recirculation mode 198
Air vents 189
Air volume 196
Airmatic DC (Dual Control) 230
Message in display 391–392
Suspension tuning 230
Vehicle level control 230
Alarm
Audible alarm and flashing exterior
lamps (Panic alarm) 88
Canceling 98
Visual 97
Alarm system see Anti-theft systems
Alignment bolt (vehicle tool kit) 395, 415
AMG menu 145
Lap analysis 148
Overall analysis 148
RACETIMER 146
Vehicle supply voltage 146
Anticorrosion/antifreeze 454
Antilock Brake System see ABSAnti-theft systems 97
Anti-theft alarm system 97
Immobilizer 97
Aquaplaning see Hydroplaning
Ashtrays 248
Aspect ratio 323
AUDIO menu 148
Audio search function 163
Audio system
CD mode 149
Selecting radio station 149
Selecting satellite radio station* 149
Auto-dimming, Rear view mirrors 183
Automatic central locking, Control
system 163
Automatic climate control (4-zone) 188
Air recirculation mode 198
Deactivating 193
Rear window defroster 186
Setting the temperature 195
Automatic headlamp mode 127
Automatic lighting control, Interior
lighting 133
Automatic locking when driving 163
Automatic shift program 175

459 Index
Center console
Lower part 30
PASS AIR BAG OFF indicator
lamp 356
Upper part 29
Central locking
Automatic 116
Locking/unlocking from inside 116
Switching on/off (control
system) 163
Central locking switch 116
Certification label 300
Checking tire pressure electronically with
the Advanced Tire Pressure Monitoring
System* (Advanced TPMS*), (Canada
only) 309
Checking tire pressure electronically with
the Tire Pressure Monitoring System
(TPMS), (USA only) 306
Children in the vehicle 82
Air bags 67
Infant and child restraint systems 82
LATCH-type child seat anchors 86
Override switch for rear passenger
compartment 87
Cigarette lighter 249Climate control system
Air conditioning refrigerant 450
Air conditioning, Cooling 201
Air distribution 195
Air recirculation mode 198
Air volume 196
Automatic mode 194
Control panel, Rear 202
Deactivating system 194
Front defroster 197
Maximum cooling MAX COOL 198
Rear climate control 202
Residual engine heat (REST) 201
Clock 27, 157
Setting time 157
Cockpit 24
Cold tire inflation pressure 324
Collapsible tire
Inflating 416
Collapsible wheel chock 397
COMAND see separate operating instruc-
tions
Combination filter with pollutant-sensitive
air-recirculation mode 200
Combination switch 55, 130Control system 139
Functions 143
Multifunction display 139
Multifunction steering wheel 140
Resetting to factory default 153
Control system menus 142, 143
AUDIO 148
Distronic* 151
NAV* 150
Settings 152
Standard display 145
TEL* 166
Trip computer 164
Vehicle status message memory 151
Control system submenus
Convenience 163
Instrument cluster 155
Lighting 159
Time/Date 157
Vehicle 162
Convenience submenu 163
Activating easy-entry/exit
feature* 163