2003 MERCEDES-BENZ C CLASS COUPE cooling

ContentsControls in detail ............................... 81
Locking and unlocking ......................... 82 SmartKey ........................................ 82
Opening the doors from the inside . 85
Opening the trunk lid ...................... 85
Closing the trunk lid ....................... 86
Trunk lid emergency release .......... 86
Automatic central locking .............. 87
Locking and unlocking from
the inside ....................................... 87
Seats .................................................... 89 Easy-entry/exit feature* ................ 89
Head restraints............................... 90
Heated seats* ................................ 91
Memory function* ................................ 93 Storing positions into memory ....... 94
Recalling positions from memory ... 94
Storing exterior rear view mirror
parking position ............................. 95
Lighting ................................................ 96 Exterior lamp switch ....................... 96
Combination switch ........................ 99
Hazard warning flasher ................... 99
Interior lighting ............................. 100 Instrument cluster ............................. 102
Instrument cluster illumination .... 102
Coolant temperature gauge ......... 102
Trip odometer .............................. 103
Tachometer .................................. 103
Outside temperature indicator ..... 104
Control system .................................. 105 Multifunction display .................... 105
Multifunction steering wheel ........ 106
Menus .......................................... 108
Standard display menu ................ 110
AUDIO menu ................................ 110
NAV menu .................................... 112
Malfunction memory menu .......... 112
Settings menu .............................. 114
Trip computer menu ..................... 125
TEL menu* ................................... 126
Manual transmission ......................... 130 Shifting into reverse ..................... 131
Automatic transmission* ................... 132 One-touch gearshifting ................. 133
Gear ranges .................................. 134
Gear selector lever position ......... 135
Program mode selector switch ..... 136
Accelerator position ..................... 137 Emergency operation
(Limp Home Mode) ...................... 137
Good visibility .................................... 138 Rear view mirror ........................... 138
Headlamp cleaning system* ........ 140
Sun visors .................................... 141
Climate control .................................. 142 Setting the temperature ............... 145
Adjusting air distribution and
volume ......................................... 145
Defrosting .................................... 146
Air recirculation mode .................. 146
Rear window defroster ................. 147
Air conditioning ............................ 148
Ventilated storage compartment . 148
Rear passenger compartment
adjustable air vents ...................... 149
Deactivating the climate control
system ......................................... 149
Automatic climate control*
(Canada only) .................................... 150 Setting the temperature ............... 152
Adjusting air distribution .............. 153
Adjusting air volume .................... 153
Maximum cooling MAXCOOL ....... 154
Defrosting .................................... 154

50 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 over 248°F
(120°C)
The coolant is too hot and is no longer
cooling the engine.

Stop the vehicle as soon as possible
and turn off the engine. Allow engine
and coolant to cool.

Check the coolant level and add cool-
ant if necessary (
page 229).
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.

143
Controls in detail
Climate control
Climate control panel
The storage compartment between the
front seats can be ventilated (
page 148).
Information about rear passenger com-
partment adjustable air vents
(
page 149).
Item
1
Climate control panel
2
Left center air vent, adjustable
3
Right center air vent, adjustable
4
Air volume control for left center air
vent
5
Air volume control for right center
air vent
6
Air volume control for side air vent
7
Side air vent, adjustable
8
Side defroster vent, fixediFor draft-free ventilation, move the slid-
ers for the center air vents to the mid-
dle position.
Item
1
Air volume control
2
Left-side temperature control
3
Right-side temperature control
4
Air distribution control switch
5
Rear window defroster
6
AC cooling on/off
7
Air distribution and air volume
(automatic)
8
Air recirculation
9
Defrosting

144 Controls in detailClimate controlThe climate control is operational whenev-
er the engine is running. You can operate
the climate control system in either the au-
tomatic or manual mode. The system cools
or heats the interior depending on the se-
lected interior temperature and the cur-
rent 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
AC
OFF
mode is selected
(
page 148)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.
iIf the vehicle interior is hot, ventilate
the interior before driving off.
Keep the air intake grille in front of the
windshield free of snow and debris.

148 Controls in detailClimate controlAir 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 climate
control system. The air in the vehicle will
then no longer be cooled or dehumidified.
Press buttonAC
OFF
(page 143).
The indicator lamp on the
button AC
OFF
lights up. Activating
Moist air can fog up the windows. You can
dehumidify the air with the air condition-
ing.

Press
AC
OFF
again (
page 143).
The indicator lamp on the
button AC
OFF
goes out.
The air conditioning system uses the refrig-
erant R134a. This refrigerant is free of
CFCs which are harmful to the ozone layer.
Ventilated storage compartment
The front center console storage compart-
ment has its own air vent that allows for
cooling ventilation when the climate con-
trol system is activated.
1 Lever
iCondensation may drip out from under-
neath the vehicle. This is normal and
not an indication of a malfunction.
!If the air conditioning cannot be turned
on again, this indicates that the air con-
ditioning system is losing refrigerant.
The compressor has turned itself off.
Have the air conditioning system
checked at the nearest authorized
Mercedes-Benz Center.
iYou should keep this air vent closed
when outside temperatures are low.

151
Controls in detail
Automatic climate control* (Canada only)
Automatic climate control panel
Item
1
Automatic climate control panel
2
Left center air vent, adjustable
3
Right center air vent, adjustable
4
Air volume control for left center air
vent
5
Thumbwheel for adding outside air
6
Air volume control for right center
air vent
7
Air volume control for side air vent
8
Side air vent, adjustable
9
Side defroster vent, fixediFor draft-free ventilation, move the slid-
ers for the center air vents to the mid-
dle position.
Item
1
Temperature control, left, raising
2
Left-side air distribution control
(automatic or manual operation)
3
Activated charcoal filter
4
Display
5
Right-side air distribution control
(automatic or manual operation)
6
Temperature control, right, raising
7
Temperature control, right, lower-
ing
8
Rear window defroster
9
AC cooling on/off (
AC
OFF
)
Residual heat/ventilation
10
Air volume control
11
Automatic climate control on/off
(complete system)
12
Air recirculation
13
Defrosting
14
Temperature control, left, lowering

152 Controls in detailAutomatic climate control* (Canada only)The automatic climate control is operation-
al whenever the engine is running. You can
operate the climate control system in ei-
ther the automatic or manual mode. The
system cools or heats the interior depend-
ing 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 economy mode AC
OFF
mode
is selected (
page 151).
Setting the temperature
Use temperature controls 1 and 14 for the
left side or 6 and 7 for the right side to
separately adjust the air temperature on
each side of the passenger compartment.
You should raise or lower the temperature
setting in small increments, preferably
starting at 72°F (22°C). Increasing

Push temperature control
1 and/or 6.
The automatic climate control system
will correspondingly adjust the interior
air temperature.
Decreasing

Push temperature control 7
and/or 14.
The automatic climate control system
will correspondingly adjust the interior
air temperature.
Adding outside air

Turn thumbwheel 5 in dashboard
(page 150) to increase flow of out-
side air through air vents for center, left
and right sides and rear passenger
compartment.
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.
iIf the vehicle interior is hot, ventilate
the interior before driving off.
Keep the air intake grille in front of the
windshield free of snow and debris.iWhen operating the climate control
system in automatic mode, you will
only rarely need to adjust the tempera-
ture, air volume and air distribution.

154 Controls in detailAutomatic climate control* (Canada only)Maximum cooling MAXCOOL
If the left and right air distribution controls
as well as the airflow volume control are
set to
U
and there is a high need for
cooling, the display “AUTO MAXCOOL” ap-
pears.
This provides the fastest possible cooling
of the vehicle interior (when windows and
panorama sliding/pop-up roof* are
closed).
Defrosting
Activating
Press button
P
(page 151).
The indicator lamp on the button lights
up

Switch off air recirculation, if selected.

Press button
O
(page 151).
The indicator lamp on the button goes
out.

Close center air vents.

Adjust side air vents upwards.
Deactivating

Press button
P
(page 151).
The indicator lamp on the button goes
out. Defrosting is turned off.
Air recirculation mode
Switch to air recirculation mode to prevent
unpleasant odors from entering the vehicle
from the outside. This setting cuts off the
intake of outside air and recirculates the
air in the passenger compartment.
Activating
Press button
O
(page 151).
The indicator lamp on the button lights
up.
iThese settings should only be selected
for a short time.
Warning!
G
When the outside temperature is below
41°F (5°C), only switch to air recirculation
mode for short periods to prevent window
fogging.