climate control MERCEDES-BENZ ML320 2003 W163 Owner's Manual

Contents
Tow-away alarm,
glass breakage sensor.................... 79
Controls in detail............................... 83
Locking and unlocking ......................... 84
Remote control with folding key ..... 84
Opening the doors
from the inside ............................... 86
Opening the liftgate........................ 87
Closing the liftgate ......................... 88
Automatic central locking .............. 89
Locking and unlocking
from the inside ............................... 90
Seats.................................................... 91
Seat heater*................................... 91
Removing and installing
head restraints ............................... 92
Rear seats ...................................... 93
Third row seats* ............................. 96
Memory function*................................ 99
Storing positions in memory ........ 100
Recalling positions from memory . 100
Exterior rear view mirror parking
position (passenger side) ............. 100Lighting.............................................. 102
Combination switch ..................... 102
Fog lamps .................................... 105
Hazard warning flasher ................ 106
Interior lighting............................. 107
Instrument cluster ............................. 110
Instrument cluster illumination .... 110
Coolant temperature gauge ......... 111
Display in the speedometer ......... 111
Resetting trip odometer ............... 112
Tachometer .................................. 112
Outside temperature indicator ..... 112
Setting the clock .......................... 112
Automatic transmission ..................... 113
One-touch gearshifting................. 113
Gear ranges.................................. 114
Gear selector lever position ......... 115
Accelerator position ..................... 117
Towing a trailer ............................ 117
Emergency operation (Limp Home
Mode)........................................... 117
Transmission control –
LOW RANGE mode............................. 118
Switching on LOW RANGE mode .. 118
Switching off LOW RANGE mode . 118Good visibility .................................... 119
Rear view mirror .......................... 119
Headlamp cleaning system* ........ 121
Windshield wipers ........................ 122
Rear window wiper....................... 123
Sun visor ...................................... 123
Automatic climate control ................. 124
Automatic mode .......................... 126
Adjusting air volume and air
distribution manually ................... 127
Defrosting .................................... 128
Air recirculation mode.................. 128
Air conditioning ............................ 129
Residual heat and ventilation ....... 130
Rear window defroster ................. 131
Rear passenger compartment
ventilation and rear automatic
climate control ............................. 131
Front and rear air outlets ............. 132
Power windows.................................. 134
Opening and closing the side
windows ....................................... 134
Rear quarter windows* ................ 136
Sliding/pop-up roof* ......................... 137
Opening and closing the
sliding/pop-up roof ...................... 137

27 At a glance
Center console
Center console
Upper part
Item
Page
1
Air outlets, automatic
climate control
132
2
MCS, see separate
operating instructions
3
Automatic climate control
124
Rear window defroster
switch
131
4
Seat heater switch*,
passenger side
91
5
Rear quarter window
switch*, right
136
6
ESP control switch
75
Item
Page
7
Rear window wiper/wash-
er switch
123
8
Rear quarter window
switch*, left
136
9
Seat heater switch*,
driver’s side
91
10
Front and rear fog lamp
switch
105
11
Indicator lamp for antitheft
alarm system
78
12
Transmission control
switch, LOW RANGE mode
118

83 Controls in detail
Locking and unlocking
Seats
Memory function*
Lighting
Instrument cluster
Automatic transmission
Transmission control – LOW RANGE mode
Good visibility
Automatic climate control
Power windows
Sliding/pop-up roof*
Loading
Driving systems
Useful features

124 Controls in detailAutomatic climate control
Automatic climate control

125 Controls in detail
Automatic climate control
Automatic climate control panel in the front
Item
1
Thumbwheel center air outlet
2
Center air outlet, adjustable
3
Defroster air outlet windshield
4
Thumbwheels side air outlet
5
Side air outlet, adjustable
6
Footwell air outlet
7
Automatic climate control
Item
1
Air volume control
2
Defrosting
3
Air recirculation
4
Temperature control
5
Automatic control (temperature, air
distribution, air volume)
6
AC
OFF
(AC cooling on/off), econo-
my mode
Residual heat/ventilation
7
Interior temperature sensor
8
Air distribution control
9
Rear window defroster
10
Rear passenger compartment venti-
lation on/off

126 Controls in detailAutomatic climate controlThe 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.
Automatic mode
Switching on
Briefly press button
U

(
page 125).
The indicator lamp lights up. The tem-
perature, air volume and distribution
are controlled automatically.

Adjust the temperature with the tem-
perature control4 (
page 125).
Temperature control is switched off in
the extreme position (blue or red dot).
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 pollu-
tion) may require replacement of the fil-
ter 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.
Keep the air intake grille in front of the
windshield free of snow and debris.
Do not touch the interior temperature
sensor to maintain a precise tempera-
ture.
The set value is indicated by a lighted
segment on the control wheels.

127 Controls in detail
Automatic climate control
Switching off
Briefly press button
U

(
page 125).
The indicator lamp goes out. The auto-
matic mode is switched off
Air volume control1 is set to fan
speed 2 and air distribution is set
toV
.
Activating basic setting

Press button
U
at least three sec-
onds.
All functions are switched to automatic
mode and temperature is set to 72°F
(22°C).Changing basic setting

Set temperature control4
(page 125) to desired temperature.

Press button
U
for ten seconds.
The selected temperature value is
stored and set.Adjusting air volume and air distribu-
tion manually
Adjusting air volume
Turn air volume control1 to one of five
air volume settings.
iAdjust temperature settings in small in-
crements.
iIf you turn air volume control1
(page 125) or air distribution
control8, the automatic mode switch-
es off. The indicator lamp in the
button
U
goes out. The tempera-
ture control will still be in automatic
mode.
iWhen set to 0, the system is fully deac-
tivated and no fresh air is supplied. This
setting should only be selected for
short periods of time.

128 Controls in detailAutomatic climate controlAdjusting air distribution
Turn air distribution control8
(page 125) to one the following sym-
bols:
Windshield fogged on the outside

Switch the windshield wipers on.

Turn air distribution control8 to
h

or
k
.
Defrosting
Activating
Press button
P
(page 125).
The indicator lamp on the button lights
up.
Deactivating

Press button
P
again.
or

Press button
U
(page 125).
The indicator lamp on the button lights
up.
The indicator lamp on the button lights up.
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.
Symbol
Function
h
Directs air to the center
and side air outlets
j
Directs air to the wind-
shield and side air outlets
V
Directs air into the entire
vehicle interior
k
Directs air to the foot-
wells and side air outlets
iThese settings should only be selected
for a short time.
When the defrost setting has been se-
lected, only the rear window defroster
can be switched on. No other settings
are possible.
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.

129 Controls in detail
Automatic climate control
Activating
Press button
O
(page 125).
The indicator lamp on the button lights
up.
Deactivating

Press button
O
(page 125).
The indicator lamp on the button goes
out.
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 125).
The indicator lamp on the button
°

lights up.
iTo achieve the fastest possible cooling
of the interior, the automatic climate
control automatically switches to air
recirculation. The indicator lamp in the
button
O
is not illuminated when
the system automatically switches to
air recirculation.
iThe air recirculation mode is activated
automatically after

30 minutes if the automatic climate
control is switched on


after five minutes if the air condi-
tioning is switched off


after five minutes if the outside
temperature is above approximate-
ly 45°F (7 °C)
iCondensation may drip out from under-
neath the vehicle. This is normal and
not an indication of a malfunction.

130 Controls in detailAutomatic climate controlActivating
Moist air can fog up the windows. You can
dehumidify the air with the air condition-
ing.
Press button
°
again.
The indicator lamp on the button
°

goes out.
The air conditioning system uses the refrig-
erant 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 key in the steering lock to
position1.

Press button
°
(page 125).
The indicator lamp on button
°

comes on.Deactivating

Press button
°
.
The indicator lamp on button
°

goes out.
!If the
°
button on the automatic cli-
mate control panel starts to blink, this
indicates that the air conditioning sys-
tem is losing refrigerant. The compres-
sor has turned itself off. The air
conditioning cannot be turned on
again.
Have the air conditioning system
checked at the nearest authorized
Mercedes-Benz Light Truck Center.
iHow long the system will provide heat-
ing depends on the coolant tempera-
ture and the temperature set in the
climate control. The blower will run at
lower speed regardless of the air vol-
ume control setting.
iThe residual heat is automatically
turned off:

when the ignition is switched on


after about 30 minutes


if the coolant temperature is too
low


if the battery voltage drops