2006 MERCEDES-BENZ CLK500 cooling

Contents
Trip computer menu..................... 161
TEL menu* ................................... 163
Automatic transmission ..................... 166
Gear selector lever position ......... 168
Driving tips ................................... 170
Gear ranges ................................. 171
Automatic shift program .............. 172
Gear selector lever
one-touch gearshifting ................. 173
Steering wheel gearshift
control one-touch gearshifting ..... 174
Manual shift program
CLK 55 AMG ................................ 178
Emergency operation
(Limp Home Mode) ...................... 180
Good visibility .................................... 181
Headlamp cleaning system* ........ 181
Rear view mirrors ......................... 181
Sun visors .................................... 184
Rear window defroster ................. 185
Climate control (CLK 350) ................. 186
Deactivating the
climate control system................. 189
Operating the climate control
system in automatic mode ........... 189
Setting the temperature ............... 190Adjusting air distribution............... 190
Adjusting air volume ..................... 191
Front defroster.............................. 191
Air recirculation mode .................. 192
Air conditioning............................. 194
Rear passenger compartment
adjustable air vents....................... 195
Automatic climate control
(CLK 500/CLK 55 AMG)..................... 196
Deactivating the
automatic climate control system. 199
Operating the climate control system in
automatic mode ............................ 199
Setting the temperature................ 200
Adjusting air distribution............... 200
Adjusting air volume ..................... 201
Front defroster.............................. 201
Maximum cooling MAXCOOL ........ 202
Air recirculation mode .................. 203
Charcoal filter ............................... 204
Air conditioning............................. 206
Residual heat and ventilation*
(Canada only) ................................ 207
Rear passenger compartment
adjustable air vents....................... 208Audio system...................................... 209
Audio and telephone*, operation .. 209
Operating safety ........................... 209
Sound system* ............................. 209
Operating and display elements ... 210
Button and soft key operation ...... 212
Operation...................................... 212
Radio operation ............................ 217
Introduction to satellite radio*
(USA only) ..................................... 222
CD mode....................................... 227
GSM network phones ................... 233
TDMA or CDMA network phones .. 240
Emergency calls “911” ................. 247
Power windows .................................. 249
Opening and
closing the windows ..................... 249
Synchronizing power windows ...... 251
Summer opening feature .............. 252
Convenience closing feature......... 253
Opening and closing all side
windows with the soft top switch . 254
Soft top .............................................. 255
Opening and closing the soft top .. 255
Opening and closing the
soft top with the SmartKey ........... 260

56 Getting startedDrivingProblems while driving
The engine runs erratically and misfires

An ignition cable may be damaged.


The engine electronics may not be op-
erating properly.


Unburned gasoline may have entered
the catalytic converter and damaged it.

Give very little gas.

Have the problem repaired by an au-
thorized Mercedes-Benz Center as
soon as possible.The coolant temperature is
above 248°F (120°C)
The coolant is too hot and is no longer
cooling the engine.

Stop the vehicle in a safe location as
soon as possible and turn off the en-
gine. Allow engine and coolant to cool.

Check the coolant level and add
coolant if necessary (
page 327).In case of accident
If the vehicle is leaking gasoline:

Do not start the engine under any cir-
cumstances.

Notify local fire and/or police authori-
ties.
If the extent of the damage cannot be de-
termined:

Notify an authorized Mercedes-Benz
Center.
If no damage can be determined on the


major assemblies


fuel system


engine mount:

Start the engine in the usual manner.

187 Controls in detail
Climate control (CLK 350)
Canada only
USA only
Item
1
Left side air vent, adjustable
2
Thumbwheel for air volume control
for center air vents
3
Right side air vent, adjustable
4
Climate control panel
5
Right center air vent, adjustable
6
Thumbwheel for air volume control
for right side center air vent
7
Thumbwheel for air volume control
for left side center air vent
8
Left center air vent, adjustableiFor draft-free ventilation, move the
sliders for the side air vents1 and3
and center air vents5 and 8 to the
middle position.
Item
1
Air volume control
2
Left side temperature control
3
Right side temperature control
4
Air distribution control
5
Rear window defroster
6
AC cooling on/off
7
Air distribution and air volume
(automatic mode)
8
Air recirculation
9
Front defroster

188 Controls in detailClimate control (CLK 350)The climate control is operational when-
ever the engine is running. You can oper-
ate the climate control system in either the
automatic or manual mode. The system
cools or heats the interior depending on
the selected interior temperature and the
current outside temperature.Nearly 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 A/C mode is deactivated
(
page 194).
Warning!
G
When operating the climate control, the air
that enters the passenger compartment
through the air vents can be very hot or very
cold (depending on the set temperature).
This may cause burns or frostbite on unpro-
tected skin in the immediate area of the air
vents. Always keep sufficient distance be-
tween unprotected parts of the body and the
air vents. If necessary, use the air distribu-
tion control (
page 187) to direct the air to
air vents in the vehicle interior that are not
in the immediate area of unprotected skin.
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.
iSevere conditions (e.g. strong air
pollution) may require replacement of
the filter before its scheduled interval.
A clogged filter will reduce the air
volume to the interior.
If the vehicle interior is hot, ventilate
the interior before driving off, see
“Summer opening feature”
(page 252). The climate control will
then adjust the interior temperature to
the set value much faster.
Keep the air intake grille in front of the
windshield free of snow and debris.
Do not obstruct air flow by placing
objects on the air flow-through exhaust
slots below the rear window.

189 Controls in detail
Climate control (CLK 350)
Deactivating the climate control system
Deactivating
Set air volume control1 (
page 187)
to position0.
Reactivating

Set air volume control1 (
page 187)
to any speed.Operating the climate control system
in automatic mode
Activating
Press buttonU (
page 187) while
the engine is running.
The indicator lamp on the button
comes on. The air volume and air distri-
bution are adjusted automatically.

Use temperature controls2 and3
(page 187) to separately adjust the
air temperature on each side of the
passenger compartment.
The temperature of the vehicle interior
is adjusted automatically.
Deactivating

Press buttonU (
page 187) again.
The indicator lamp on the button goes
out. The automatic operation of air vol-
ume and air distribution switches off.
iWhen the climate control system is de-
activated, the outside air supply and
circulation are also deactivated. Only
choose this setting for a short time.
Otherwise the windows could fog up.
iWhen operating the climate control
system in automatic mode, you will
only rarely need to adjust the tempera-
ture, air volume and air distribution.
In automatic mode, cooling with dehu-
midify is switched on. This function can
be switched off if necessary.

191 Controls in detail
Climate control (CLK 350)
Adjusting air volume
Six blower speeds are available.
Press buttonU (
page 187).
The indicator lamp on the button goes
out. The automatic air volume control
is switched off. The air volume is con-
trolled according to the currently se-
lected control setting.

Use the air volume control1
(page 187) to adjust the air volume.
Front defroster
You can use this setting to defrost the
windshield, for example if it is iced up.
You can also defog the windshield and the
side windows.
Activating
Press buttonPor0
(page 187).
The indicator lamp on the button
comes on.The air conditioning switches
automatically to the following functions:


cooling on to dehumidify


maximum blowing and heating
power


air flows onto the windshield and
the front side windows


the air recirculation mode is
switched off
Deactivating

Press buttonP or0
(page 187) again.
The indicator lamp on the button goes
out. Defrosting is turned off.
iKeep this setting selected only until the
windshield or the side windows are
clear again.
iThe cooling remains switched on.

194 Controls in detailClimate control (CLK 350)Air conditioning
The cooling function, is 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 187).
The indicator lamp on the button goes
out.
The cooling function switches off after
a short delay.Activating
Moist air can fog up the windows. You can
dehumidify the air with the air condition-
ing.

Press button2(
page 187) 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.
iCondensation may drip out from under-
neath 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 itself off.
Have the air conditioning checked at
the nearest authorized Mercedes-Benz
Center.

197 Controls in detail
Automatic climate control (CLK 500/CLK 55 AMG)
Canada only
USA only
Item
1
Left side air vent, adjustable
2
Thumbwheel for air volume control
for center air vents
3
Right side air vent, adjustable
4
Automatic climate control panel
5
Right center air vent, adjustable
6
Thumbwheel for air volume control
for right side center air vent
7
Thumbwheel for air volume control
for left side center air vent
8
Left center air vent, adjustableiFor draft-free ventilation, move the slid-
ers for the center air vents1, 3, 5,
8 to the middle position.
Item
1
Left side air distribution control
2
Front defroster
3
Temperature control, left, raising
4
Display
5
Air volume control, raising
6
Temperature control, right, raising
7
Rear window defroster
8
Right side air distribution control
9
Charcoal filter
a
AC cooling on/offResidual heat/ventilation
(Canada only)
b
Temperature control, right, lowering
c
Air volume control, lowering
d
Temperature control, left, lowering
e
Air recirculation
f
Automatic climate control on/off
(complete system)
g
Air distribution and air volume
(automatic mode)Item