clock setting MERCEDES-BENZ R320 2008 W251 Owner's Manual

27 At a glance
Instrument cluster
ItemPage
1LLeft turn signal
indicator lamp
2To dim instrument cluster
illumination154
3Reset button for:

Resetting trip odometer

Resetting all settings
155
171
4To brighten instrument
cluster illumination154
5KRight turn signal
indicator lamp
6Clock176
ItemPage
7Speedometer with:
-Antilock Brake
System (ABS)
indicator lamp414
’Variable speed limiter
indicator lamp1
lDistance warning
lamp2262,
414
1Lamp without function. It illuminates when the
ignition is on. It should go out when the engine is
running.
2Vehicles without Distronic*: Warning lamp without
function. It illuminates when the ignition is on.
It should go out when the engine is running.
ItemPage
;Brake warning lamp,
USA only415
3Brake warning lamp,
Canada only415
vElectronic Stability
Program (ESP®)
warning lamp
419
HCombination low tire
pressure/TPMS
malfunction telltale,
USA only422
Low tire pressure
telltale*, Canada only422

176 Controls in detail
Control system
Time/Date submenu
Access the
Time/Date submenu via the
Settings menu. Use the Time/Date
submenu to change the time and date
settings.
The following functions are available:Setting the time
This function is not available if your vehicle
is equipped with the COMAND system and
navigation module*.
Move the selection marker with
buttonæ orçto the
Time/Date
submenu.
Press buttonj ork repeatedly
until the message
Clock Set Hour or
Clock Set Minute(s) appears in the
multifunction display.
Example illustration for setting the hour
Press buttonæ orç to set the
time.Setting the date
This function is not available if your vehicle
is equipped with the COMAND system and
navigation module*.
Move the selection marker with
buttonæ orç to the
Time/Date
submenu.
Press buttonj ork repeatedly
until the message
Date Set Month,
Date Set Day, or Date Set Year
appears in the multifunction display.
Example illustration for setting the month
Press buttonæ orç to set the
date.
FunctionPage
Setting the time176
Setting the date176
iIf your vehicle is equipped with the
COMAND system and navigation module*, see
separate COMAND operating instructions for
information on how to set the date and time.

213 Controls in detail
Climate control
Deactivating
Press button
orQ
(
page 210).
The indicator lamp on buttonU
goes out. The automatic operation of
air volume switches off. The selected
blower speed is shown in the air
volume displayb (
page 210).
or
Press air distribution button 5,9,
ora (
page 210).
The indicator lamp on buttonU
goes out. The automatic operation of
air distribution switches off.
Setting the temperature
Use temperature controls1 and7
(
page 210) to separately adjust the air
temperature on each side of the passenger
compartment. You should raise or lower
the temperature setting in small incre-
ments, preferably starting at 72°F (22°C).
The climate control will adjust to the set
temperature as fast as possible.
Increasing
Turn temperature control1and/or
7 (
page 210) slightly clockwise.
The climate control system will corre-
spondingly adjust the interior air
temperature.
Decreasing
Turn temperature control1 and/or
7 (
page 210) slightly counterclock-
wise.
The climate control system will corre-
spondingly adjust the interior air
temperature.
Adjusting air distribution
Press air distribution button5,9, ora
(
page 210) to adjust the air distribution.
The following symbols are found on the
buttons:
Press the desired air distribution
button5,9, ora (
page 210).
The indicator lamp on buttonU
goes out.
SymbolFunction
aDirects air through the center
and side air vents
ZDirects air to the windshield
and side air vents
YDirects air to the footwells and
side air vents

227 Controls in detail
3-zone automatic climate control*
Operating the automatic climate
control system in automatic mode
You can switch the automatic climate
control system on and off separately for
each zone as needed.
Activating
Press buttonU (page 224) while
the engine is running.
The indicator lamp on the button
comes on. Air volume and air distribu-
tion are controlled separately for each
zone.
Use temperature controls1 and9
(
page 224) to separately adjust the
air temperature on each side of the
passenger compartment.
The temperature of the interior is
adjusted automatically.
Deactivating
Press one button of the air distribution
(
page 224) or press button

orQ (
page 224).
The indicator lamp on the buttonU
goes out.
Depending on which button you press –
the air distribution button or the air vol-
ume button
or Q – automatic
control of either the air distribution or
air volume is switched off.
Setting the temperature
Use temperature controls1 and9
(
page 224) to separately adjust the air
temperature on each side of the passenger
compartment. You should raise or lower
the temperature setting in small incre-
ments, preferably starting at 72°F (22°C).
The automatic climate control will adjust
to the set temperature as fast as possible.
Increasing
Turn temperature control
1and/or9 slightly clockwise.
The automatic climate control system
will correspondingly adjust the interior
air temperature.
Decreasing
Turn temperature control
1and/or9 slightly counterclock-
wise.
The automatic climate control system
will correspondingly adjust the interior
air temperature.
iWhen operating the automatic climate con-
trol system in automatic mode, you will only
rarely need to adjust the temperature, air volume
and air distribution.
In automatic mode, cooling with dehumidify is
switched on. This function can be switched off if
necessary.

238 Controls in detail
3-zone automatic climate control*
Adjusting air distribution
Use the air distribution controls3 or5
to adjust the air distribution for the rear
passenger compartment.
The symbols on the controls represent the
following functions:
Adjusting manually
Press the desired air distribution con-
trol.
The indicator lamp on button U
goes out.Adjusting automatically
Press buttonU.
The indicator lamp on the button
comes on. The air distribution is ad-
justed automatically.
Setting the temperature
Use temperature controla (
page 236)
to separately adjust the air temperature of
the rear passenger compartment.
You should raise or lower the temperature
setting in small increments, preferably
starting at 72°F (22°C). The automatic
climate control will adjust to the set
temperature as fast as possible.Increasing the temperature
Turn temperature controla
(
page 236) slightly clockwise.
The rear automatic climate control will
correspondingly adjust the interior air
temperature for the rear passenger
compartment.
Decreasing the temperature
Turn temperature controla
(
page 236) slightly counterclock-
wise.
The rear automatic climate control will
correspondingly adjust the interior air
temperature for the rear passenger
compartment.
SymbolFunction
ZDirects air to the center air
vents
YDirects air to the footwells and
the side air vents
iThe rear automatic climate control will not
cool the air when the air conditioning is switched
off (
page 234).

548 Index
Climate control 208
Air conditioning, Cooling 219
Air conditioning refrigerant 538
Air distribution 213
Air recirculation mode 216
Air vents, Front 208, 214
Air vents, Rear 220
Air volume 214
Control panel, Front 210
Control panel, Rear 220
Deactivating system 212
Defogging 216
Defrosting 214
Rear passenger compartment 220
Residual heat utilization (REST) 219
Clock 26, 176
Cockpit 24
Cold tire inflation pressure 394
Collapsible tire 471, 532
Collapsible wheel chock 471
Combination switch 58, 59, 61, 147
Compass 334
Control system 180Control and operation of radio
transmitters 348
Control system 157
Multifunction display 157
Multifunction steering wheel 158
Resetting to factory default 171
Control system menus 160
AIRMATIC*/Compass 168
AUDIO 165
Distance warning function* 185
Distronic* (Canada only) 168
NAV* 167
Settings 170
Standard display 164
TEL* 187
Trip computer 185
Vehicle status message memory 169
Control system submenus 161, 163
Comfort* 183
Instrument cluster 174
Lighting 177
Time/Date 176
Vehicle 180Coolant 360, 537, 541
Anticorrosion/antifreeze mixing ratio
and quantity 541
Capacities 537
Checking coolant level 360
Messages in the multifunction
display 448–450
Temperature 350
Corner-illuminating front fog lamps* 148
Messages in the multifunction
display 456
Replacing bulbs 480, 481
Cruise control 257
Activating 258
Messages in the multifunction
display 430
Cup holders 308
Front center console 308
Rear center console* 310
Curb weight 394
Customer Assistance Center see CAC

561 Index
Seats 128
Adjusting 43
Easy entry/exit feature 128
Heating* 139
Memory function* 141
Multicontour seat* 132
Ventilation* 140
Securing cargo 290
Selector lever see Gear selector lever
Self-test
Lamps in the instrument cluster 414
OCS 82
Tele Aid* 323
Service and warranty information 10
Service intervals see Maintenance, Service
indicator message 402
Service life
Tires 364
Vehicle battery 503
Service, Parts 522
Service see Maintenance
Service system see Maintenance SystemSettings
AIRMATIC* 276
Clock 176
Comfort functions* 183
Control system menus 160, 162
Control system
submenus 161, 163, 171
Date 176
Distance warning function* 185
Factory, SmartKey 112
Factory, SmartKey with
KEYLESS-GO* 116
Individual, Vehicle 170
Instrument cluster 174
Language, multifunction display 175
Lighting 177
Memory function* 141
Resetting all, Control system 171
Selective, SmartKey 112
Selective, SmartKey with
KEYLESS-GO* 117
Time 176
Vehicle level control* 277Shift program mode, Automatic
transmission 200
Shifting, Automatic transmission 190
Side impact air bags 76
Side marker lamps
Cleaning lenses 407
Messages in the multifunction
display 458
Replacing bulbs 480, 481
Side windows see Power windows
Sidewall 395
SmartKey see Key, SmartKey 110
SmartKey with KEYLESS-GO* see Key,
SmartKey with KEYLESS-GO* 113
Snow chains 399
Snow tires see Winter tires
Spare fuses 467
Spare wheel 471, 532
Inflating 499
Mounting 493
Wheel bolts 467, 498
Speed settings
Cruise control 261
Distronic* (Canada only) 268
Speedometer 27
Spinning see Tires, Direction of rotation