set clock MERCEDES-BENZ C300 2008 W204 Owner's Manual

151 Controls in detail
Control system
Control system
The control system is activated as soon as
the SmartKey in the starter switch is
turned to position2 or as soon as the
KEYLESS-GO* start/stop button (Canada
only) is in position 2. The control system
enables you to:

call up information about your vehicle

change vehicle settings
For example, you can use the control
system to find out when your vehicle is
next due for service, to call up statistical
data on your vehicle, and much more.
The control system relays information to
the multifunction display.
Multifunction display
1Text field
2Line for main menus
3Temperature
4Current program mode
(automatic transmission*)
5Current gear selector lever
position/gear range
(automatic transmission*)
Additional speedometer
(manual transmission)
6Digital clock
Settings, functions, submenus as well as
any malfunctions are shown to you in the
text field.
Warning!G
A driver’s attention to the road and traffic
conditions must always be his/her primary
focus when driving.
For your safety and the safety of others,
selecting features through the multifunction
steering wheel should only be done by the
driver when traffic and road conditions
permit it to be done safely.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your vehicle is
covering a distance of 44 feet
(approximately 14 m) every second.

253 Controls in detail
Dual-zone automatic climate control
Operating the climate control system
in automatic mode
Activating: Press buttonU
(
page 250) while the engine is run-
ning.
The indicator lamp in the button comes
on. The air volume and air distribution
are adjusted automatically.
Use temperature controls1 and6
(
page 250) to separately adjust the
air temperature on each side of the
passenger compartment.
The temperature of the vehicle interior
is adjusted automatically.
Deactivating: Press buttonU
(
page 250) again.
The indicator lamp in the button goes
out. The automatic operation of air vol-
ume and air distribution switches off.
The symbols of air distribution and air
volume appear in displayb.
Adjust air distribution (page 254).
Adjust air volume (page 254).
Setting the temperature
Use temperature controls1 and6
(
page 250) 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
control1 and/or6 (
page 250)
slightly clockwise.
The climate control system will corre-
spondingly adjust the interior air tem-
perature.
Decreasing: Turn temperature
control1 and/or6 (
page 250)
slightly counterclockwise.
The climate control system will corre-
spondingly adjust the interior air tem-
perature.
iWhen operating the climate control system
in automatic mode, you will only rarely need to
adjust the temperature, air volume and air distri-
bution.
In automatic mode, cooling with dehumidify is
switched on. This function can be switched off if
necessary (
page 258).

262 Controls in detail
3-zone automatic climate control* (Canada only)
Deactivating: Press buttonU
(
page 259) again.
The indicator lamp in the button goes
out. The automatic operation of air vol-
ume and air distribution switches off.
The symbols of air distribution and air
volume appear in displayd.
Adjust air distribution (page 263).
Adjust air volume (page 263).
Setting the temperature
Use temperature controls1 and/or8
(
page 259) 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
control1 and/or8 (
page 259)
slightly clockwise.
The climate control system will corre-
spondingly adjust the interior air tem-
perature.
Decreasing: Turn temperature
control1 and/or8 (
page 259)
slightly counterclockwise.
The climate control system will corre-
spondingly adjust the interior air tem-
perature.
iYou can also adjust the temperature in the
rear passenger compartment (
page 268).
iIf you turn the temperature control fully
clockwise for one side of the vehicle, you are in-
creasing the temperature for the other side of
the vehicle as well.
iIf you turn the temperature control fully
counterclockwise for one side of the vehicle, you
are decreasing the temperature for the other
side of the vehicle as well.

323 Operation
At the gas station
Turn off the engine.
Vehicles with automatic transmission*:
Move the gear selector lever to
positionP (
page 140).
Remove the SmartKey from the starter
switch.
Vehicles with SmartKey with
KEYLESS-GO*:
Turn off the engine by pressing the
KEYLESS-GO* button once.
Open the driver’s door (this puts
the starter switch in position0,
same as with the SmartKey re-
moved from the starter switch). The
driver’s door then can be closed
again.
Open the fuel filler flap by pushing at
the point indicated by arrow 1.The fuel filler flap springs open.
Turn the fuel cap counterclockwise and
hold on to it until possible pressure is
released.
Take off the fuel filler cap and set it in
the direction of arrow 2 and place it
into holder 4 located on the inside of
the fuel filler flap.
To prevent fuel vapors from escaping
into open air, fully insert filler nozzle
unit.
Only fill your tank until the filler nozzle
unit cuts out – do not top off or over-
fill.
Replace the fuel cap by turning it clock-
wise until it audibly engages.
Close the fuel filler flap.
You should hear the latch close shut.
For more information on gasoline or E85, see
“Premium unleaded gasoline” (
page 481) or
the Factory Approved Service Products
pamphlet (USA only) in your vehicle literature
portfolio, or contact an authorized
Mercedes-Benz Center.
Warning!G
Overfilling of the fuel tank may create pres-
sure in the system which could cause a gas
discharge. This could cause the gas to spray
back out when removing the fuel pump noz-
zle, which could cause personal injury.
iMake sure to close the fuel filler flap before
locking your vehicle as the flap locking pin pre-
vents closing after you have locked the vehicle.
iLeaving the engine running and the fuel cap
open can cause the yellow engine malfunction
indicator lamp ± to illuminate.
For more information, see the “Practical hints”
section (
page 378).

423 Practical hints
Where will I find ...?
Removing the Minispare wheel
Remove vehicle tool kit1
(
page 421).
Turn luggage bowl2 counterclock-
wise and remove it.
Remove Minispare wheel3.Setting up the collapsible wheel chock
The collapsible wheel chock serves to
additionally secure the vehicle, e.g. while
changing the wheel.
1Tilt the plates upward
2Fold the lower plate outward
3Insert the plate
Tilt both plates upward1.
Fold the lower plate outward2.
Guide the tabs of the lower plate all the
way into the openings of the base
plate3.
For information on where to place wheel
chocks when changing a wheel, see “Lift-
ing the vehicle” (
page 441).

450 Practical hints
Battery
Reconnecting the battery
Turn off all electrical consumers.
Remove SmartKey from starter switch.
Vehicles with KEYLESS-GO* (Canada
only):
Open the driver’s door.
Connect the battery positive lead and
fasten its cover (
page 448).
Connect the battery negative lead
(
page 448).
Make sure that the ventilation hose4
is attached to the battery.
Reinstall filter box (page 447).
!Always connect the starter battery in the or-
der described below. Otherwise, the vehicle’s
electronics could be damaged.
!Never invert the terminal connections.
!Make sure the battery has a plug where the
ventilation hose
4 is attached to it.
iThe following procedures must be carried
out following any interruption of battery power
(e.g. due to reconnecting):

Reset the automatic exterior mirror fold in
function (
page 99).

Set the clock (page 170).
Vehicles with COMAND*: see COMAND op-
erator’s manual.

490 Index
Dual-zone automatic climate
control 250
Front defroster 255
Rear climate control 268
Rear window defroster 256, 265
Residual engine heat and
ventilation 266
Setting the temperature 262
Temperature 253
Windshield, defogging 255
Clock 151
Setting time 170
Cockpit 24
Cold weather performance 483
COMAND* see separate COMAND
operating instructions
Combination switch 112
Corner-illuminating front fog
lamps* 112
High beam flasher 112
Turn signals 131
Windshield wipers 117
Control system 151
Multifunction display 151
Multifunction steering wheel 152
Resetting to factory default 165Control system menu 151
AUDIO 158
Menus overview 154
Navi* 158
Service menu 164
Settings menu 165
Standard display 156
TEL* 160
Trip computer 156
Vehicle status message
memory 164
Control system submenus 153, 155
Convenience 174
Instrument cluster 168
Lighting 171
Time/Date 170
Vehicle 173
Coolant 329
Adding 329
Anticorrosion/antifreeze mixing ratio
and quantity 484
Checking level 329
Messages in display 405
Temperature 321
Temperature gauge 27, 148Coolant level
Checking 329
Corner-illuminating front fog lamps* 112
Replacing bulbs 431
Cruise control 241
Activating 242
Canceling 243
Driving downhill 243
Driving uphill 243
Setting current speed 242
Setting to last stored speed
(“Resume” function) 245
Cruising range, fuel 483
Cup holder
In front seat armrest 287
In rear seat armrest 287
Curb weight 356

491 Index
D
Date display, setting 170
Daytime running lamp mode 110
Setting 171
Deep water see Standing water
Defogging
Windshield 255
Defrosting 264
Defrosting, Front 255
Delayed shut-off
Interior lighting 173
Department of Transportation see DOT
Difficulties
While driving 132
While starting 129
Digital clock see clock
Digital speedometer 158
Additional speedometer 169, 170
Permanent display 169
Dimensions, Vehicle 474
Direction of rotation, Tires 334Displays
Additional speedometer 169, 170
Digital speedometer 158
Maintenance service indicator 362
Multifunction display 151
Outside temperature 158
Permanent display 169
Vehicle status message see
Multifunction display messages
Vehicle status messages
memory 165
Distance to empty (range),
Trip computer 157
Document holder 289
Door
Control panel 32
Entry lamps 116
Inside door handle 79
Locking 72, 77
Locking with Tele Aid* 302
Messages in display 406
Opening from inside vehicle 79
Opening from outside 72, 77
Unlocking 71, 76
Unlocking with Tele Aid* 301
DOT 357Downhill driving
Cruise control 243
Drink holder see Cup holder
Drinking and driving 311
Driving 126
Abroad 318
Hydroplaning 315
In winter 317
Instructions 126, 311
Problems 132
Safety systems 59
Through standing water 318
Driving off 314
Driving safety systems
4MATIC 65
ABS 59
BAS 60
EBP 61
Electronic traction system 63
ESP
®62
Driving systems 241
Cruise control 241
Driving safety systems 59
Driving tips 142
Accelerator position 142
Kickdown 142