2004 MERCEDES-BENZ C320 COUPE fuel consumption

113 Controls in detail
Control system
Menus, submenus and functions
Menu1
Menu2
Menu3
Menu4
Menu5
Menu6
Menu7
Commands/submenusStandard dis-
play
AUDIO
NAVI*
Malfunction
memory
Settings
Trip computer
Telephone
Coolant temper-
ature display
Select radio sta-
tion
Activate route
guidance
Call up malfunc-
tion messages
Reset to factory
settings
Fuel consumption
statistics after
start
Load phone
book
Digital speed-
ometer
Operate CD
player*
Instrument cluster
submenu
Fuel consumption
statistics since the
last reset
Search for name
in phone book
Call up FSS
Operate cas-
sette player
Lighting submenu
Call up range
Check engine oil
level
Vehicle submenuConvenience sub-
menu

132 Controls in detailControl systemSetting parking position for exterior rear
view mirror
Use the
MIRROR SETTING WHEN PARKING

function to select whether the passen-
ger-side exterior rear view mirror should be
turned downward during parking maneu-
vers when reverse gear is engaged. For ad-
ditional information, see “Activating
exterior rear view mirror parking position”
(
page 147).
You can store a parking position for the
passenger exterior rear view mirror using
the memory switch (
page 97).

Move the selection marker with
theæ orç button to the
CONVE-
NIENCE
submenu.

Press buttonj ork repeatedly
until you see this message in the dis-
play:
MIRROR SETTING WHEN PARKING
.
The selection marker is on the current
setting.

Pressæ orç to switch function ON or
OFF
.
Trip computer menu
Use the trip computer menu to call up sta-
tistical data on your vehicle. The following
information is available:Function
Page
Fuel consumption statistics after
start
133
Fuel consumption statistics
since last reset
133
Call up range (distance to empty)
134

133 Controls in detail
Control system
Fuel consumption statistics after start
Press buttonÿ orè repeatedly
until you see the first function of the
Trip computer menu.

Press buttonj ork repeatedly
until you see this message in the dis-
play:
AFTER START
.
1Distance driven since start
2Time elapsed since start
3Average speed since start
4Average fuel consumption since startFuel consumption since last reset

Press buttonÿ orè repeatedly
until you see the first function of the
Trip computer menu.

Press buttonj ork repeatedly
until you see this message in the dis-
play:
After RESET
.
1Distance driven since last reset
2Time elapsed since last reset
3Average speed since last reset
4Average fuel consumption since last re-
setResetting fuel consumption statistics

Press buttonÿ orè repeatedly
until you see the first function of the
Trip computer menu.

Press buttonj ork repeatedly
until you see the reading that you want
to reset in the display.

Press and hold the reset button in the
instrument cluster (
page 22) until
the value is reset to 0.
iAll statistics stored since the last en-
gine start will be reset approximately
four hours after the SmartKey in the
starter switch is turned to position0 or
removed from the starter switch.
Resetting will not occur if you turn the
SmartKey back to position1 or2 with-
in this time period.

223 Operation
Driving instructions
Driving instructions
Drive sensibly – save fuel
Fuel consumption, to a great extent, de-
pends on driving habits and operating con-
ditions.
To save fuel you should:

Keep tires at the recommended infla-
tion pressures


Remove unnecessary loads


Remove roof rack when not in use


Allow engine to warm up under low
load use


Avoid frequent acceleration and decel-
eration


Have all maintenance work performed
by qualified technicians at the intervals
specified in the Service Booklet and as
required by the FSS. Contact your au-
thorized Mercedes-Benz Center
Fuel consumption is also increased by driv-
ing in cold weather, in stop-and-go traffic,
on short trips and in hilly country.
Drinking and driving
PedalsPower assistance
Warning!
G
Drinking and driving and/or taking drugs
and driving are very dangerous combina-
tions. Even a small amount of alcohol or
drugs can affect your reflexes, perceptions
and judgement.
The possibility of a serious or even fatal ac-
cident are greatly increased when you drink
or take drugs and drive.
Do not drink or take drugs and drive or allow
anyone to drive who has been drinking or
taking drugs.
Warning!
G
Keep driver’s foot area clear at all times. Ob-
jects stored in this area may impair pedal
movement.Warning!
G
With the engine not running, there is no
power assistance for the brake and steering
systems. In this case, it is important to keep
in mind that a considerably higher degree of
effort is necessary to brake and steer the ve-
hicle.

325 Technical data
Rims and Tires
Rims and Tires
Use only tires and rims which have been
specifically developed for your vehicle and
tested and approved by Mercedes-Benz.
Other tires and rims can have detrimental
effects, such as

poor handling characteristics


increased noise


increased fuel consumption
!Moreover, tires and rims not approved
by Mercedes-Benz may, under load, ex-
hibit dimensional variations and differ-
ent tire deformation characteristics
that could cause them to come into
contact with the vehicle body or axle
parts. This may result in damage to the
tires or the vehicle.
iFurther information on tires and rims is
available at any authorized Mercedes-
Benz Center. A tire inflation pressure
table is located on the fuel filler flap of
the vehicle. The tire pressure should be
checked regularly and should only be
adjusted on cold tires. Follow tire man-
ufacturer’s maintenance recommenda-
tion included with vehicle.

335 Technical data
Fuels, coolants, lubricants, etc.
When switching fuels, make sure:

Fuel level is below half full.


Fuel level is above reserve (reserve
warning lamp is not lit).


Amount of added fuel is more than
5 gallons (20 liters).


Ignition is off during refill.


Immediately after refueling engine is
started and operated for at least five
minutes.
These precautions and recommendations
are supposed to prevent any difficulties
when starting and operating the engine
which otherwise may be experienced be-
fore the engine has fully adapted to the dif-
ferent fuel.
If in spite of these recommendations the
engine does not perform properly, adding
more gasoline (at least 3 gallons
[12 liters]) to the fuel may improve the en-
gine behavior.Cold weather performance
It is possible that starting times will signif-
icantly increase at temperatures below
32°F (0°C). At low temperatures the use
of a block heater is recommended (see
your authorized Mercedes-Benz Center for
further information). Rough idling may also
be experienced at such temperatures be-
fore the engine is fully warmed up.
Hot weather performance
At ambient temperatures above 95°F
(35°C) start times may increase and be ac-
companied by a rough idle following the
start.Cruising range
E85 fuel contains less energy per gallon
than gasoline. To ensure that engine per-
formance with Ethanol fuel is similar to
that when using gasoline, the engine must
burn more Ethanol fuel. As a result, it is to
be expected that the fuel consumption will
increase when using E85 compared to gas-
oline operation.
Maintenance
Please inform your Mercedes-Benz Center
if you use or have used E85 fuel when your
vehicle is delivered for maintenance or re-
pairs.
!E85 fuel is unsuitable for use when am-
bient temperatures fall below 14°F
(-10°C).
iUse of E85 may reduce your driving
range.

356 IndexFront seat head restraints
Installing 90
Manual seat 90
Power seat* 91
Removing 90
Front seats
Heater 93
FSS (Flexible Service System) 249, 342
Fuel 234
Additives 334
Cruising range 335
E85 (Ethanol fuel) 335
Fuel reserve warning lamp 262
Gasoline additives 334
Premium
unleaded gasoline 234, 331, 333
Requirements 333
Reserve warning 23
Switching (Flexible fuel vehicle) 334
Technical data 330
Fuel additives 334Fuel consumption statistics
After start 133
Since last reset 133
Fuel filler flap 233
Locking 233
Opening 291
Unlocking 233
Fuel requirements 333
Fuel reserve tank
Message in display 277
Fuel tank
Capacity 331
Filler flap 233
Fuels, coolants, lubricants etc.
Capacities 330
Functions (control system) 110, 113
Resetting 120
Fuse box 317
Fuse chart 317
Fuse extractor 318
Fuses 317Auxiliary fuse box in trunk 318
Fuse box in engine compartment 317
Fuse box in passenger
compartment 317
Fuse chart 317
Fuse extractor 318
G
Garage door opener 27, 214
Gasoline see Fuel 234
Gasoline additives 334
Gear range 342
Automatic transmission 141
Limiting 141
Shifting into optimal 140
Gear range limit
Canceling 140
Gear selector lever 291
Cleaning 255
Position 142
Unlocking manually 291
Global
Locking 83
Unlocking 83

362 Index
Washer fluid 283
Multifunction steering wheel 24, 110, 343
Buttons 110
N
Navigation system
Operating 117
See separate COMAND* operating in-
structions
Night security illumination 100
Setting 127
O
Occupant safety 56
Airbags 57
Children and airbags 58
Children in the vehicle 65
Fastening the seat belt 41
Infant and child restraint systems 65
LATCH child seat mounts 70
Seat belts 41, 60
Odometer, main 23Oil
Adding 239
Consumption 237
Dipstick 237
Filler neck 240
Viscosity 342
Oil level
Checking 235
One-touch gearshifting 140
Canceling gear range limit 140
Downshifting 140
Upshifting 140
Opening
Ashtray 203
Doors from the inside 85
Fuel filler flap 233
Fuel filler flap manually 291
Glove box 200
Hood 236
power window with SmartKey 188
Roller sunblind for the
sliding/pop-up roof 189Side windows 187
Sliding/pop-up roof 190, 292
Sliding/pop-up roof in an
emergency 292
Sliding/pop-up roof with
SmartKey 192
Trunk 85
Windows 186, 187
Windows with SmartKey 188
Operating
Audio system 159
Cassette player 116
CD player 116
COMAND* see separate operating in-
structions
Navigation system 117
Radio 115
Radio transmitters 230
Telephone* 134, 159, 179
Operating safety
Audio system 159
Operator’s Manual 10
Ornamental moldings 253