2004 MERCEDES-BENZ CL500 air conditioning

Contents
Control system .................................. 129
Multifunction display .................... 129
Multifunction steering wheel ........ 130
Menus .......................................... 132
Standard display menu ................ 134
AUDIO menu ................................ 134
CD changer operating mode ........ 137
TEL menu* ................................... 139
NAVI menu ................................... 141
Distronic* menu........................... 142
Trip computer menu..................... 143
Malfunction memory menu .......... 144
Settings menu .............................. 145
Automatic transmission ..................... 157
One-touch gearshifting................. 158
Gear ranges ................................. 159
Gear selector lever position ......... 160
Steering wheel gearshift control
(Speedshift) CL 55 AMG............... 161
Program mode selector switch..... 163
Accelerator position ..................... 163
Manual shift program CL 55 AMG 164
Emergency operation
(Limp home mode) ....................... 166Good visibility ..................................... 167
Rear view mirror ........................... 167
Electrically folding exterior rear
view mirrors .................................. 169
Windshield wipers ......................... 170
Headlamp cleaning system ........... 170
Sun visors ..................................... 171
Rear window sunshade* ............... 172
Automatic climate control .................. 173
Setting the temperature................ 176
Adjusting air distribution............... 177
Adjusting air volume ..................... 178
Maximum cooling MAXCOOL ........ 179
Defrosting ..................................... 179
Air recirculation mode .................. 179
Charcoal filter ............................... 181
Rear window defroster .................. 182
Deactivating the climate
control system .............................. 182
Air conditioning............................. 183
Residual heat and ventilation ........ 183
Ventilated storage compartment
(except CL 55 AMG)...................... 184
Rear passenger compartment
adjustable air vents....................... 185Power windows .................................. 186
Opening and closing the windows 186
Synchronizing the power windows 190
Sliding / pop-up roof ........................... 191
Opening and closing the
sliding /pop-up roof ...................... 191
Synchronizing the sliding /
pop-up roof................................... 194
Driving systems .................................. 195
Cruise control ............................... 195
Distronic* ..................................... 198
Active Body Control (ABC) ............ 210
Parktronic system*
(Parking assist) ............................. 214
Loading .............................................. 219
Roof rack* .................................... 219
Loading instructions ..................... 219
Cargo tie-down hooks ................... 220

ContentsTechnical data.................................. 359
Spare parts service ............................ 360
Warranty coverage ............................. 361
Loss of Service and Warranty
Information Booklet...................... 361
Identification labels............................ 362
Layout of poly-V-belt drive ................. 363
CL 500 ......................................... 363
CL 55 AMG ................................... 363
CL 600 ......................................... 363
Engine ................................................ 364
Rims and Tires ................................... 365
Same size tires ............................. 366
Mixed size tires ............................ 368
Spare wheel ................................. 369
Electrical system................................ 370
Main Dimensions and weights ........... 371
Main Dimensions.......................... 371
Weights ........................................ 371Fuels, coolants, lubricants, etc. ......... 372
Capacities .................................... 372
Engine oils.................................... 374
Engine oil additives ...................... 374
Air conditioning refrigerant .......... 374
Brake fluid .................................... 375
Premium unleaded gasoline ......... 375
Fuel requirements ........................ 375
Gasoline additives ........................ 376
Coolants....................................... 376
Windshield and headlamp washer
system ......................................... 379
Consumer information ....................... 380
Uniform tire quality grading ......... 380
Technical terms............................... 383Index................................................. 389

176 Controls in detailAutomatic climate controlNearly all dust particles, pollutants and
odors are filtered out before outside air en-
ters the passenger compartment through
the air distribution system.
The air conditioning will not engage (no
cooling) if the ± mode is selected
(page 183).
Setting the temperature
Use temperature controls aand8
(page 175) to separately adjust the air
temperature on each side of the passenger
compartment. You should raise or lower
the temperature setting in small incre-
ments, preferably starting at 72°F (22°C).
Increasing / decreasing

Press button a or 8 repeatedly up or
down until the display shows the de-
sired temperature.
The automatic climate control system
will accordingly adjust the interior air
temperature.
Warning!
G
Follow the recommended settings for heat-
ing and cooling given on the following pag-
es. Otherwise the windows could fog up,
impairing visibility and endangering you and
others.
iThe current climate control settings
(ON / OFF, temperature, air volume, ac-
tivated charcoal filter, etc.) are stored
for each SmartKey before it is removed
from the starter switch or when the ve-
hicle is locked using the SmartKey with
KEYLESS-GO* (
page 116).
If the vehicle interior is hot, ventilate
the interior before driving off.
Keep the air intake grille in front of the
windshield free of snow, leaves, sticks,
and any other debris.
Do not obstruct air volume by placing
objects on the air volume-through ex-
haust slots below the rear window.
iWhen operating the climate control
system in automatic mode, you will
only rarely need to adjust the tempera-
ture, air volume and air distribution.

178 Controls in detailAutomatic climate controlWindows fogged on the inside
Press button± to switch on the air
conditioning (
page 175).
The indicator lamp in the button goes
out.

Press button, to switch off the air
recirculation (
page 175).
The indicator lamp on the button goes
out.

Make sure left and right buttonU
emerges.
Theh, », d and
csymbols become visible.

Press left and rightd button.

Set blower to the maximum speed.

Adjust left and right air vents1
and6 upwards (
page 173).

Increase temperature setting.

Open the side air vents9 and direct
them onto the side windows
(page 173).
Windshield fogged on the outside

Switch the windshield wipers on
(page 50).

Press on both U buttons until they
click in.
Theh, », d and c sym-
bols are no longer visible.
Adjusting air volume
Use air volume control9 (
page 175) for
both automatic and manual air volume ad-
justment.
Adjusting automatically

PressA on air volume switch9
(page 175).
The display shows “
AUTO
”. The air vol-
ume is adjusted automatically.
Adjusting manually
Reducing air volume

Press switch 9 down until the desired
air volume is reached.
The display shows the current level.
Increasing air volume

Press switch9 up until the desired air
volume is reached.
The display shows the current level.

180 Controls in detailAutomatic climate control
Deactivating
Press button, (
page 175).
The indicator lamp on the button goes
out.The air recirculation mode is deactivated
automatically:


after five minutes if the outside temper-
ature is below approximately 41°F
(5°C)


after five minutes if the air conditioning
is turned off


after 30 minutes if the outside temper-
ature is above approximately 41°F
(5°C)
At outside temperatures above 79°F
(26°C) the system will not automatically
switch back to outside air. A quantity of
outside air is added after approximately
30 minutes.
Warning!
G
Never operate the side windows and the
sliding/pop-up roof if there is the possibility
of anyone being harmed by the closing pro-
cedure.
In the event that the procedure causes po-
tential danger, the closing of the side win-
dows can be immediately halted by
releasing the, button or by pressing the
respective window switch. The closing of the
sliding/pop-up roof can be immediately
halted by releasing the, button or by
moving the sliding/pop-up roof switch in the
overhead control panel in any direction.
iThe air recirculation mode is activated
automatically:

at high outside temperatures


if the concentration of carbon mon-
oxide and nitrogen oxide in the out-
side air increases beyond a
predetermined level, for example in
a tunnel.
Please note that the charcoal filter
must be activated (
page 181) for the
air recirculation mode to be activated
automatically.
If you have turned off the air condition-
ing (
page 183) or the outside
temperature is below 41°F (5°C), the
air recirculation mode will not switch
on automatically.
iIf you keep button, pressed, the
side windows and the sliding / pop-up
roof will return to their previous posi-
tion.

183 Controls in detail
Automatic climate control
Air conditioning
The air conditioning is operational while
the engine is running and cools the interior
air to the temperature set by the operator.
Deactivating
It is possible to deactivate the air condi-
tioning (cooling) function of the automatic
climate control system. The air in the vehi-
cle will then no longer be cooled or dehu-
midified.
Press button± (
page 175).
The indicator lamp on the button±
comes on.Activating
Moist air can fog up the windows. You can
dehumidify the air with the air condition-
ing.

Press± again (
page 175).
The indicator lamp on the button±
goes out.
The air conditioning uses the refrigerant
R134a. This refrigerant is free of CFCs
which are harmful to the ozone layer.
Residual heat and ventilation
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.
Activating
Turn the SmartKey in the starter switch
to position1 or0, or remove it from
the starter switch.

Press buttonT (
page 175).
The indicator lamp on buttonT
comes on.
iCondensation may drip out from under-
neath the vehicle. This is normal and
not an indication of a malfunction.
!If the± button on the automatic cli-
mate control panel starts to flash, this
indicates that the air conditioning is
losing refrigerant. The compressor has
turned itself off. The air conditioning
cannot be turned on again.
Have the air conditioning checked at
the nearest authorized Mercedes-Benz
Center.

184 Controls in detailAutomatic climate controlDeactivating
Press buttonT (
page 175).
The indicator lamp on buttonT
goes out.
The residual heat is automatically turned
off:


when the ignition is switched on


after about 30 minutes


if the battery voltage dropsVentilated storage compartment
(except CL 55 AMG)
The storage compartment under the front
armrest (
page 222) can be ventilated
when the automatic air conditioning is
switched on. The switch is located inside
the storage compartment in the front. The
air temperature is about the same as that
of the center air vents.
The air volume is dependent on the setting
of:


Air distribution control


Air volume control


Air vents in the dashboard
The air temperature is about the same as
that of the dashboard air vents. It cannot
be regulated separately.Switching ventilation on

Open the storage compartment in front
of the armrest, see “Storage compart-
ment below the front armrest”
(page 222)

Push upper portion of switch.
Switching ventilation off

Open the storage compartment in front
of the armrest, see “Storage compart-
ment below the front armrest”
(page 222)

Push lower portion of switch.
iHow long the system will provide heat-
ing depends on the coolant tempera-
ture and the temperature set by the
operator. The blower will run at speed
setting1 regardless of the air
distribution control setting.
!Do not obstruct the air vent in the stor-
age compartment.iThe compartment can get very warm
due to its confined space. When storing
heat sensitive objects in the compart-
ment, close the air vent while heating
the passenger compartment.

363 Technical data
Layout of poly-V-belt drive
Layout of poly-V-belt drive
CL 500
1Automatic belt tensioner
2ABC tandem pump (pump for
power-steering assistance and ABC
chassis)
3Air conditioning compressor
4Crankshaft
5Coolant pump
6Generator (alternator)
7Idler pulley
CL 55 AMGThe CL 55 AMG has two poly-V-belts (belt
one shown in purple/belt two shown in
black).1Idler pulley
2Automatic belt tensioner
3ABC tandem pump (pump for
power-steering assistance and ABC
chassis)
4Air conditioning compressor
5Crankshaft
6Coolant pump
7Generator (alternator)
8Idler pulley
9Automatic belt tensioner
aSupercharger
CL 600
1Automatic belt tensioner
2ABC tandem pump (pump for
power-steering assistance and ABC
chassis)
3Air conditioning compressor
4Crankshaft
5Coolant pump
6Generator (alternator)
7Idler pulley
8Idler pulley
9Idler pulley