2006 MERCEDES-BENZ CLK COUPE air conditioning

Contents
Settings menu .............................. 152
Trip computer menu..................... 165
TEL menu* ................................... 167
Automatic transmission ..................... 170
Gear selector lever position ......... 172
Driving tips ................................... 174
Gear ranges ................................. 175
Automatic shift program .............. 176
Gear selector lever
one-touch gearshifting................. 177
Steering wheel gearshift
control one-touch
gearshifting (CLK 500) ................. 178
Emergency operation
(Limp-Home Mode) ...................... 179
Good visibility .................................... 180
Headlamp cleaning system* ........ 180
Rear view mirrors ......................... 180
Sun visors .................................... 183
Rear window sunshade*
(Canada only) ............................... 184
Rear window defroster ................. 185
Climate control (CLK 350) ................. 186
Deactivating the
climate control system................. 189Operating the climate control
system in automatic mode............ 189
Setting the temperature................ 190
Adjusting 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) . 196
Deactivating the
automatic climate control system. 199
Operating the automatic
climate control system in
automatic mode ............................ 199
Setting the temperature................ 200
Adjusting air distribution............... 201
Adjusting air volume ..................... 201
Front defroster.............................. 202
Maximum cooling MAXCOOL ........ 202
Air recirculation mode .................. 203
Charcoal filter ............................... 204
Air conditioning............................. 206
Residual heat and ventilation*
(Canada only) ................................ 207Rear passenger compartment
adjustable air vents ...................... 208
Audio system...................................... 209
Audio and telephone*, operation .. 209
Operating safety ........................... 209
Operating and display elements ... 210
Button and soft key operation ...... 212
Operation...................................... 212
Radio operation ............................ 216
Introduction to satellite radio*
(USA only) ..................................... 220
CD mode....................................... 225
GSM network phones ................... 231
TDMA or CDMA network phones .. 238
Emergency calls “911” ................. 244
Power windows .................................. 246
Opening and
closing the windows ..................... 246
Synchronizing power windows ...... 248
Summer opening feature .............. 249
Convenience closing feature......... 250
Power tilt/sliding sunroof* ................ 251
Opening and closing
the power tilt/sliding sunroof ....... 251
Synchronizing
the power tilt/sliding sunroof ....... 253

ContentsTowing the vehicle ............................. 432
Towing the vehicle........................ 432
Installing towing eye bolt.............. 434
Fuses ................................................. 436
Aids for replacing fuses ................ 436
Main fuse box in passenger
compartment................................ 437
Fuse box in engine compartment . 437
Fuse box in trunk.......................... 438
Technical data................................. 439
Parts service ...................................... 440
Warranty coverage............................. 441
Loss of Service and Warranty
Information Booklet ..................... 441
Identification labels ........................... 442
Layout of poly-V-belt drive ................. 443
CLK 350 ....................................... 443
CLK 500 ....................................... 443
Engine................................................ 444
Rims and tires.................................... 445
Same size tires ............................. 447
Mixed size tires ............................ 448
Minispare wheel ........................... 449
Electrical system ............................... 450
Main dimensions and weights............ 451
Main dimensions .......................... 451
Weights ........................................ 451Fuels, coolants, lubricants, etc. ......... 452
Capacities .................................... 452
Engine oils ................................... 454
Engine oil additives ...................... 454
Air conditioning refrigerant .......... 454
Brake fluid.................................... 454
Premium unleaded gasoline ......... 455
Fuel requirements ........................ 455
Gasoline additives ........................ 456
Coolants ...................................... 457
Windshield washer system and
headlamp cleaning system*......... 459
Technical terms............................... 461Index................................................. 467

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 249). 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.

191 Controls in detail
Climate control (CLK 350)
Opening center and side air vents
Turn thumbwheels 2, 6and7
(page 186) upward.
The side air vents1 and3 and cen-
ter air vents5 and 8 are open.
Closing center and side air vents

Turn thumbwheels 2, 6and7
(page 186) downward.
The side air vents1 and3 and cen-
ter air vents5 and 8 are closed.
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.

192 Controls in detailClimate control (CLK 350)Windshield fogged on the outside
Switch the windshield wipers on
(page 54).

Press button U (
page 187).
The indicator lamp on the button
comes on. Air distribution and air vol-
ume are adjusted automatically.
If the automatic mode of the climate con-
trol is switched off:

Turn air distribution control4
toaorY(
page 187).
Air recirculation mode
Switch to air recirculation mode to prevent
unpleasant odors from entering the vehicle
from the outside (e.g. before driving
through a tunnel). This setting cuts off the
intake of outside air and recirculates the
air in the passenger compartment.Activating

Press button, (
page 187).
The indicator lamp on the button
comes on.
iKeep this setting selected only until the
windshield is clear again.
Warning!
G
Fogged windows impair visibility, endanger-
ing you and others. If the windows begin to
fog on the inside, switching off the air
recirculation mode immediately should clear
interior window fogging. If interior window
fogging persists, make sure the air
conditioning (
page 194) is activated, or
press buttonP or0.
iThe air recirculation mode is activated
automatically at high outside tempera-
tures.
The indicator lamp on button, is
not lit when the air recirculation mode
is automatically switched on.
A quantity of outside air is added after
approximately 30 minutes.

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.

195 Controls in detail
Climate control (CLK 350)
Rear passenger compartment adjustable air vents
The air conditioning for the rear passenger
compartment is controlled via the climate
control panel (
page 187).The air vents for the rear passenger
compartment are located in the rear
center console.
1Thumbwheel for air volume control for
center air vents
2Left center air vent
3Right center air ventAdjusting air distribution

Push the slide for the left center
vent2 or right center vent3 to the
left, right, up or down.
The air flow is directed in the corre-
sponding direction.
Adjusting air volume

Turn thumbwheel1 to the left or right.
The air volume is increased or
decreased.
iThe temperature at the center air vents
for the rear passenger
compartment2 and3 (
page 195)
is the same as at the dashboard center
air vents.
iFor draft-free ventilation, push
slides2 and3 upward.

198 Controls in detailAutomatic climate control (CLK 500)The automatic climate control is operation-
al whenever the engine is running. You can
operate the automatic climate control sys-
tem in either the automatic or manual
mode. The system cools or heats the inte-
rior depending on the selected interior
temperature and the current outside tem-
perature.Nearly all dust particles, pollutants and
odors are filtered out before outside air
enters the passenger compartment
through the air distribution system.
The air conditioning will not engage (no
cooling) if theA/C mode is deactivated
(
page 206).
Warning!
G
When operating the automatic 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 frost-
bite on unprotected skin in the immediate
area of the air vents. Always keep sufficient
distance between unprotected parts of the
body and the air vents. If necessary, use the
air distribution controls (
page 197) to
direct the air to air vents in the vehicle inte-
rior that are not in the immediate area of un-
protected skin.
Warning!
G
Follow the recommended settings for
heating and cooling given on the following
pages. 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 249). The automatic 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.