fuel consumption MERCEDES-BENZ C320 4MATIC 2003 W203 Owner's Manual

132 Controls in detailControl systemTrip computer menu
Use the trip computer menu to call up
statistical data on your vehicle. The
following information is available:Fuel consumption statistics after start

Press button
ÿ
or
è
repeatedly
until you see the first function of the
Trip computer menu.

Press button
j
or
k
repeatedly
until you see this message in the
display:
AFTER START
.
1Distance driven since start
2Time elapsed since start
3Average fuel consumption since start
4Average speed since startFuel consumption since last reset

Press button
ÿ
or
è
repeatedly
until you see the first function of the
Trip computer menu.

Press button
j
or
k
repeatedly
until you see this message in the
display:
AFTER RESET
.
1Distance driven since last reset
2Time elapsed since last reset
3Average fuel consumption since last
reset
4Average speed since last reset
Function
Page
Fuel consumption statistics after
start
see
below
Fuel consumption statistics
since last reset
see
below
Call up range (distance to empty)
133

133 Controls in detail
Control system
Resetting fuel consumption statistics
Press button
ÿ
or
è
repeatedly
until you see the first function of the
Trip computer menu.

Press button
j
or
k
repeatedly
until you see the reading that you want
to reset in the display.

Press and hold the reset knob in the
instrument cluster (
page 22) until
the value is reset to0.Call up range (distance to empty)

Press button
ÿ
or
è
repeatedly
until you see the first function of the
Trip computer menu.

Press button
j
or
k
repeatedly
until you see this message in the
display:
RANGE
.
In the display you will see the
calculated range based on the current
fuel tank level.
iAll statistics stored since the last
engine start will be reset approximately
four hours after the key in the starter
switch is turned to position0 or
removed from the starter switch.
Resetting will not occur if you turn the
key back to position1 or2 within 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
at regular intervals by an authorized
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
Pedals
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 is sharply increased when you drink
or take drugs and drive.
Please don’t drink or take drugs and drive or
allow anyone to drive after 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.

322 Technical dataRims and Tires
Rims and TiresUse 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,
exhibit dimensional variations and dif-
ferent tire deformation characteristics
under load that could cause them to
come into contact with the vehicle
body or axle parts. Damage to the tires
or the vehicle may be the result.
iFurther information on tires and rims is
available at any authorized
Mercedes-Benz Center. A tire inflation
pressure table is located on the fuel fill-
er cap of the vehicle. The tire pressure
should be checked regularly and
should only be adjusted on cold tires.
Follow tire manufacturer’s mainte-
nance recommendation included with
vehicle.

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

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
before the engine has fully adapted to the
different 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
engine 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 before the engine is fully
warmed up.
Hot weather performance
At ambient temperatures above 95°F
(35°C) start times may increase and be
accompanied 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
repairs.
!E85 fuel is unsuitable for use when am-
bient temperatures fall below 14°F
(-10°C).
iUse of E85 may reduce your driving
range.

354 Index
Messages in display 269
Switching off 76
Switching on 77
Warning lamp 256
ETD 64, 342
Safety guidelines 59
Ethanol fuel
At the gas station 233
Requirements 334
Switching fuels 334
Exterior lamp switch 47, 101
Exterior lamps
Delayed shut-off 126
Exterior rear view mirrors
Adjusting 39
Parking position* for 131
F
Fahrenheit
Setting temperature units 123
Fastening the seat belts 41
Fine adjustment
Cruise control 195
First aid kit 279
Flat tire 297
Lowering the vehicle 301
Mounting the spare wheel 297Preparing the vehicle 297
Spare wheel 281
Flexible fuel vehicles 334
At the gas station 233
Switching fuels 334
Flexible Service System (FSS) 247, 342
Fog lamp, rear 103, 291
Fog lamps
Replacing bulbs 290
Fog lamps, front 103
Messages in display 274
Replacing bulbs 291
Switching on 103
Four wheel electronic traction system
(4MATIC) with ESP 78
4MATIC 78
Front airbags 60
Front lamps
Bi-Xenon type* 293
Halogen-type 292
Messages in display 272–275
Replacing bulbs 290, 292
Switching on 101
Front seat head restraints
Installing 94
Manual seat 94Power seat* 94
Removing 94
Front seats
Heater* 97
FSS (Flexible Service System) 247, 342
Fuel 234
Additives 334
Cruising range 335
E85 (Ethanol fuel) 335
Fuel reserve warning lamp 259
Gasoline additives 334
Premium unleaded
gasoline 234, 330, 333
Requirements 333, 334
Reserve warning 23
Switching (Flexible fuel vehicle) 334
Technical data 329
Fuel additives 334
Fuel consumption statistics
After start 132
Since last reset 132, 133
Fuel filler flap 233
Locking 233
Opening 287
Unlocking 233

360 IndexN
Navigation system
See separate COMAND*
operating instructions
Navigation system*
Operating 118
Night security illumination 103
Setting 126
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 anchors 69
Seat belts 41, 59
Odometer, main 23
Oil
Adding 237
Checking level 236
Consumption 236
Dipstick 236
Filler neck 237
Viscosity 342Oil level
Checking 234
One-touch gearshifting 139
Canceling gear range limit 139
Downshifting 139
Upshifting 139
Opening
Ashtray 207
Cup holders 204
Doors from the inside 87
Fuel filler flap 233
Fuel filler flap manually 287
Glove box 203
Hood 235
Side windows 188
Sliding/pop-up roof* 190, 289
Sliding/pop-up roof* in an
emergency 289
Sliding/pop-up roof* with
SmartKey 191
Trunk 86, 88
Trunk from the inside 88
Windows 187
Windows with SmartKey 188Operating
Audio system 165
Cassette player 118
CD player* 117
COMAND* see separate
operating instructions
Garage door opener 220
Integrated remote control 220
Navigation system* 118
Radio 115, 117
Radio transmitters 230
Safety 16
Telephone* 134, 165, 182
Vehicle outside the USA and
Canada 13
Operating safety 16
Audio system 165
Operator’s Manual 10
Ornamental moldings 251
Outer seats
Rear seat head restraints 95
Outside temperature indicator 110
Overdue service 247
Overhead control panel 27
Overspeed range 343

363 Index
Fuses 313
High beam bulbs 292
High beam bulbs
(xenon-type* headlamps) 293
License plate lamp bulbs 295
Low beam bulbs 292
Parking lamp bulbs 293, 294
Rear fog lamp bulb 295
Rear lamp bulbs 291, 295
Rear turn signal bulbs 295
Side marker lamp bulbs 294
Standing lamp bulbs 293, 294
Wiper blade insert 296
Wiper blades 296
Reporting
Safety defects 18
Reset knob in the
instrument cluster 23, 120
Resetting
All functions (control system) 120
All functions of a submenu 120
Fuel consumption 132, 133
Service indicator (FSS) 248
Trip odometer 109
Residual heat utilization 163
Residual ventilation 163Restraint system see Infant and child
restraint systems 65, 68, 344
Reverse (manual transmission)
Shifting into 137
Rims 322
Roadside Assistance 12
Rolling code programming 219
RON
(Research Octane Number) 234, 344
Roof rack* 196
Rotating wheels 244
Rubber parts
Cleaning 252
S
Safety
Occupant 56
Safety belts see Seat belts 41
Safety defects
Reporting 18
Safety systems
Driving 73
Saving current speed 194
Searching
Radio station 117Seat belt force limiter 64
Seat belt height adjustment 43
Seat belts 61
Cleaning 252
Fastening 41
Height adjustment 43
Proper use of 43, 63
Safety guidelines 59
Warning lamp 259
Seat cushion depth
Adjusting 96
Seat heater*
Switching off 97
Switching on 97
Seats 93
Adjusting 32, 33
Easy entry/exit feature* 93
Heater* 97
Manual seat 33
Multicontour seat* 96
Power seat* 34
Rapid seat heating* 97
Split rear bench seat* 199
Selecting
Display 124