2007 MERCEDES-BENZ CLK550 COUPE heating

Contents
Safety and Security........................... 63
Occupant safety................................... 64
Air bags .......................................... 65
Occupant Classification System ..... 70
Seat belts ....................................... 75
Active head restraints .................... 79
Children in the vehicle .................... 80
Blocking of rear
side window operation ................... 86
Panic alarm .......................................... 87
Activating ....................................... 87
Deactivating ................................... 87
Driving safety systems ......................... 88
ABS ................................................ 88
BAS ................................................ 90
ESP
®............................................... 91
Anti-theft systems................................ 94
Immobilizer..................................... 94
Anti-theft alarm system .................. 94
Controls in detail............................... 97
Locking and unlocking ......................... 98
SmartKey ....................................... 98
SmartKey with KEYLESS-GO* ...... 101
Checking the batteries in
the SmartKey or
SmartKey with KEYLESS-GO* ...... 107
Loss of the SmartKey or
SmartKey with KEYLESS-GO* ...... 107
Opening the doors
from the inside ............................. 108
Opening the trunk ........................ 109
Closing the trunk.......................... 111
Trunk emergency release ............. 116
Valet locking ................................ 117
Automatic central locking ............ 118
Locking and unlocking
from the inside ............................. 118
Seats ................................................. 120
Front seat active head restraints . 120
Rear seat head restraints ............. 120
Multicontour seat* ....................... 123
Seat heating* ............................... 124
Seat ventilation* .......................... 125Memory function ............................... 126
Storing positions into memory ..... 127
Recalling positions from memory. 127
Lighting ............................................. 128
Exterior lamp switch .................... 128
Combination switch ..................... 132
Corner-illuminating front
fog lamps* (With Bi-Xenon*
headlamps only)........................... 133
Hazard warning flasher ................ 135
Interior lighting ............................ 136
Door entry lamps ......................... 137
Trunk lamp ................................... 137
Instrument cluster ............................. 138
Adjusting
instrument cluster illumination .... 138
Coolant temperature indicator ..... 139
Resetting trip odometer ............... 139
Tachometer.................................. 140
Clock............................................ 140
Outside temperature indicator ..... 140
Control system .................................. 141
Multifunction display.................... 141
Multifunction steering wheel........ 142
Menus .......................................... 144
Standard display menu ................ 146

124 Controls in detail
Seats
Seat heating*
Both switches for the front seats are
located in the center console.
1Seat heating switchThe red indicator lamps on the switch1
show which heating level you have select-
ed.
Switch on the ignition (page 38).Switching on seat heating
Press seat heating switch1 once.
Three red indicator lamps in the switch
come on.
Continue pressing seat heating
switch1 until desired seat heating
level is reached.
Switching off seat heating
Press seat heating switch1
repeatedly until all red indicator lamps
go out.
Level
3Three indicator lamps on
(highest level).
After approximately five minutes,
seat heating is automatically
switched to level 2.
2Two indicator lamps on.
After approximately ten minutes,
seat heating is automatically
switched to level 1.
1One indicator lamp on
(lowest level).
After approximately 20 minutes,
seat heating is automatically
switched off.
offNo indicator lamp on.
iIf one or more of the indicator lamps on the
seat heater switch1 are flashing, there is insuf-
ficient voltage due to too many electrical con-
sumers being switched on. The seat heating
switches off automatically.
The seat heating will switch back on again auto-
matically as soon as sufficient voltage is avail-
able.

189 Controls in detail
Climate control
Press buttonU (page 185).
The indicator lamp on the button goes
out. The automatic air distribution is
switched off. The air distribution is
controlled according to the selected
control setting.
Turn air distribution control 4
(
page 185) to the desired symbol.
Opening center and side air vents
Turn thumbwheels 2, 6and7
(
page 184) 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 184) 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 185).
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 185) 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 185).
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
iKeep this setting selected only until the
windshield or the side windows are clear again.

196 Controls in detail
Automatic climate control
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 204).
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 195) 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 fea-
ture” (
page 248). The automatic climate con-
trol will then adjust the interior temperature to
the set value much faster.
Keep the air intake grille in front of the wind-
shield free of snow and debris.
Do not obstruct air flow by placing objects on the
air flow-through exhaust slots below the rear
window.

200 Controls in detail
Automatic climate control
Adjusting air volume
Use buttonU (
page 195) for auto-
matic mode or air volume controls

orQ (
page 195) to adjust air volume
manually.
Seven blower speeds are available.
Press button
to decrease
orQ (
page 195) to increase air
volume to the desired level.
The indicator lamp on the buttonU
goes out.
The automatic air distribution remains
switched on.
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 buttonP or0
(
page 195).
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 offDeactivating
Press buttonP or0
(
page 195) again.
The indicator lamp on the button goes
out.
The previous settings are once again in
effect.
Windshield fogged on the outside
Switch the windshield wipers on
(
page 56).
If the automatic mode of the automatic cli-
mate control is switched off:
Turn air distribution control1 or8
toa orY (
page 195).
iKeep this setting selected only until the
windshield or the side windows are clear again.
iIf you have switched on the defrost function
using thePor0 button, you cannot
make any other settings.
iThe cooling remains switched on.
iKeep this setting selected only until the
windshield is clear again.

205 Controls in detail
Automatic climate control
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.ActivatingSwitch off the ignition (page 38).
Press button9 (page 195).
The indicator lamp on the button
comes on.Deactivating
Press button9 (page 195).
The indicator lamp on the button goes
out.
The residual heat is automatically turned
off:

when the ignition is switched on

after about 30 minutes

if the battery voltage drops
iHow long the system will provide heating de-
pends on

the coolant temperature

the temperature set by the operator
The blower will run at speed setting 1 regardless
of the air distribution control setting.

274 Controls in detail
Useful features
Cigarette lighter
Switch on the ignition (page 38).1Cover
2Cigarette lighter
Briefly press the bottom of cover
plate1.
The cover plate opens automatically.
Push in cigarette lighter2.
The cigarette lighter will pop out
automatically when hot.
Push down cover plate 1 to close the
ashtray.
The cover plate engages.
Warning!G
Never touch the heating element or sides of
the cigarette lighter; they are extremely hot.
Hold the knob only.
Make sure that any children traveling with
you do not injure themselves or start a fire
with the hot cigarette lighter.
When leaving the vehicle, always remove the
SmartKey or SmartKey with KEYLESS-GO*
from the starter switch, take it with you, and
lock the vehicle. Do not leave children unat-
tended in the vehicle, or with access to an
unlocked vehicle. A child’s unsupervised ac-
cess to a vehicle could result in an accident
and/or serious personal injury.
!The lighter socket can accommodate 12V
DC electrical accessories (up to a maximum of
85 W) designed for use with the standard “ciga-
rette lighter” plug type. Keep in mind, however,
that connecting accessories to the lighter socket
(for example extensive connecting and discon-
necting, or using plugs that do not fit properly)
can damage the lighter socket. With the socket
damaged, the lighter may no longer be able to be
placed in the heating (pushed-in) position, or the
lighter may pop out too early with the lighter not
hot enough.
To help avoid damaging the cigarette lighter
socket, we recommend connecting 12V DC elec-
trical accessories designed for use with the stan-
dard “cigarette lighter” plug type to the 12V
power outlet (
page 275) in your vehicle when-
ever possible.

294 Operation
Driving instructions
Power assistance
Brakes
To help prevent brake disk corrosion after
driving on wet road surfaces (particularly
salted roads), it is advisable to brake the
vehicle with considerable force prior to
parking. The heat generated serves to dry
the brakes.If your brake system is normally only sub-
ject to moderate loads, you should occa-
sionally test the effectiveness of the
brakes by applying above-normal braking
pressure at higher speeds. This will also
enhance the grip of the brake pads.
Refer to the description of the Brake Assist
System (BAS) (
page 90).
Brake pad wear or a leak in the system may
be the reason for low brake fluid level in
the reservoir.
The brake fluid level in the reservoir may
be too low if the brake warning lamp in the
instrument cluster comes on and an
acoustic warning sounds although the
parking brake is released (
page 358).
Warning!G
With the engine not running, there is no
power assistance for the brake and steering
systems. In this case, it is important to keep
in mind that a considerably higher degree of
effort is necessary to brake and steer the ve-
hicle.
Warning!G
After driving in heavy rain for some time
without applying the brakes or through wa-
ter deep enough to wet brake components,
the first braking action may be somewhat
reduced and increased pedal pressure may
be necessary to obtain expected braking ef-
fect. Maintain a safe distance from vehicles
in front.
Resting your foot on the brake pedal will
cause excessive and premature wear of the
brake pads.
It can also result in the brakes overheating,
thereby significantly reducing their effec-
tiveness. It may not be possible to stop the
vehicle in sufficient time to avoid an acci-
dent.
!Because the ESP® operates automatically,
the engine must be shut off when

the parking brake is being tested on a brake
test dynamometer

the vehicle is being towed with the front axle
raised
Active braking action through the ESP
® may oth-
erwise seriously damage the brake system.
Warning!G
Make sure not to endanger any other road
users when carrying out these braking
maneuvers.