2008 MERCEDES-BENZ ML550 Residual heat and ventilation

Contents
Control system .................................. 147
Multifunction display .................... 147
Multifunction steering wheel ........ 148
Menus .......................................... 150
Standard display menu ................ 154
AMG menu ................................... 156
Off-road Mode menu .................... 159
AUDIO menu ................................ 160
NAV* menu .................................. 161
AIRMATIC*/Compass menu ........ 162
Vehicle status message
memory menu .............................. 162
Settings menu .............................. 163
Vehicle configuration ................... 177
Trip computer menu..................... 178
TEL* menu ................................... 180
Automatic transmission ..................... 183
Gear selector lever ....................... 183
Shifting procedure ....................... 186
Transmission positions................. 187
Driving tips ................................... 190
Gear ranges ................................. 192
Steering wheel gearshift control .. 193
Shift program (ML 63 AMG only).. 194
Emergency operation
(Limp-Home Mode) ...................... 197Transfer case ...................................... 198
Good visibility ..................................... 199
Headlamp cleaning system* ......... 199
Rear view mirrors .......................... 199
Power folding exterior
rear view mirrors* ......................... 200
Sun visors ..................................... 201
Rear window defroster .................. 203
Climate control ................................... 204
Deactivating the
climate control system ................. 208
Operating the climate control
system in automatic mode............ 208
Setting the temperature................ 209
Adjusting air distribution............... 209
Adjusting air volume ..................... 210
Front defroster.............................. 210
Air recirculation mode .................. 212
Air conditioning............................. 214
Residual heat and ventilation ........ 215
Rear climate control*.................... 2163-zone automatic climate control* ..... 218
Deactivating the
automatic climate
control system .............................. 222
Operating the automatic
climate control system
in automatic mode ........................ 223
Setting the temperature ............... 223
Adjusting air distribution .............. 224
Adjusting air volume ..................... 225
Front defroster ............................. 225
Maximum cooling MAXCOOL ........ 226
Air recirculation mode .................. 227
Air conditioning ............................ 229
Using driver-side settings
for all temperature zones.............. 229
Residual heat and ventilation........ 230
Rear automatic climate control..... 231
Power windows .................................. 235
Door windows ............................... 236
Synchronizing the door windows .. 237
Summer opening feature .............. 237
Convenience closing feature......... 238
Power tilt/sliding sunroof .................. 240
Opening and closing ..................... 240
Synchronizing ............................... 242

206 Controls in detail
Climate control
1Temperature control, left
2Air distribution and air volume
(automatic, manual)
3Front defroster
4Increasing air volume
5Air distribution (directs air through
the windshield and side air vents)
6Rear climate control* on/off
Air supply for rear passenger
compartment on/off
:USA only
7Temperature control, right
8AC cooling on/off
Residual heat/ventilation
9Air distribution (directs air through
center and side air vents)
aAir distribution (directs air through
the footwells and side air vents)
bAir volume display
cDecreasing air volume
dRear window defroster
eAir recirculation
fInterior temperature sensor
gClimate control on/off

215 Controls in detail
Climate control
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 button9 (page 206).
The indicator lamp on the button goes
out.
Activating
Moist air can fog up the windows. You can
dehumidify the air with the air condition-
ing.
Press button9 (page 206) 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.
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
Switch off the ignition (page 40).
Press button9 (page 206).
The indicator lamp on the button
comes on.
Deactivating
Press button9 (page 206).
The indicator lamp on the button goes
out.
!If the air conditioning cannot be turned on
again, this indicates that the air conditioning is
losing refrigerant. The compressor has turned
off.
Have the air conditioning checked at the nearest
authorized Mercedes-Benz Light Truck Center.
iHow long the system will provide heating
depends on

the coolant temperature

the battery voltage
Regardless of the temperature and air volume
set on the climate control panel, the interior tem-
perature is set to 72°F (22°C) and the blower
runs on low speed to protect the vehicle battery.
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

220 Controls in detail
3-zone automatic climate control*
1Temperature control, left
2Air distribution and air volume
(automatic, manual)
3Air distribution, driver’s side
4Front defroster
5Increasing air volume
6Rear window defroster
7Air distribution, passenger side
8Rear automatic climate control
on/off
>USA only
™Canada only
9Temperature control, right
aAutomatic climate control on/off
bAir distribution, passenger side
cAir distribution, passenger side
dAC cooling on/off
Residual heat/ventilation
eDisplay
fDecreasing air volume
gAir recirculation
hAir distribution, driver’s side
jAir distribution, driver’s side
kInterior temperature sensor
lAdopting driver’s side settings for all
zones

230 Controls in detail
3-zone automatic climate control*
Activating
Adjust the temperature, air volume and
air distribution (
page 220).
Press button; (page 220).
The indicator lamp on the button
comes on.
The driver-side settings are used for all
temperature zones.
Deactivating
Press button; (page 220) again.
The indicator lamp on the button goes
out.
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
Switch off the ignition (page 39).
Press button9 (page 220).
The indicator lamp on the button
comes on.
Deactivating
Press button9.
The indicator lamp on the button goes
out.
iIf you manually set the temperature, air vol-
ume or air distribution for the passenger side or
the rear passenger compartment when the
MONO setting is active, the MONO setting will
be switched off.
iHow long the system will provide heating
depends on

the coolant temperature

the battery voltage
Regardless of the temperature and air volume
set on the automatic climate control panel, an
interior temperature is aimed at by 72°F (22°C)
and the blower runs on low speed to protect the
vehicle battery.
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

547 Index
Replacing bulbs 463
Additional turn signals, Exterior rear
view mirrors 470
Backup lamps 463, 471
Brake lamps 463, 471
Corner-illuminating front fog
lamps* 463, 464, 469
Fog lamp, Rear 463, 471
Fog lamps, Front 463, 464, 469
High beam headlamps 463, 464, 467
License plate lamps 463, 473
Low beam headlamps 463, 464, 466
Parking/standing lamps 463, 468,
471, 472
Side marker lamps, Front 463, 464,
466, 469
Side marker lamps, Rear 463, 471
Tail lamps 463, 464, 471, 472
Turn signal lamps, Front 463, 464,
468
Turn signal lamps, Rear 463, 471Reporting safety defects 19
Reset button, In instrument cluster 164
Reset tool
Active head restraints,
Depository 459
Residual heat and ventilation 215, 230
Reverse gear position, Automatic
transmission 183, 187
Rims 381, 515
Roadside Assistance 12
Roadside Assistance button see Tele Aid
RON 338, 526
Roof rails 266
Rubber parts, Cleaning 396
Run Flat Indicator (Canada only) 360S
Safety
Driving safety systems 98
Occupant safety 72
Reporting safety defects 19
Safety belts see Seat belts
Satellite radio* 160
Scissors-type vehicle jack 450, 451
Seat belt force limiter 87
Seat belts 84
Children in the vehicle 89
Cleaning 397
Fastening 51
Height adjustment 53
Messages in the multifunction
display 407
Proper use of 53, 86
Safety guidelines 76
Telltale 29, 84, 406
Warning lamp 406, 407
Seat cushion depth see Seats