2005 MERCEDES-BENZ C CLASS COUPE fuel consumption

151
Controls in detail
Control system
Trip 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 orè repeatedly
until the first function of the Trip
computer menu appears in the
multifunction display.

Press button j ork repeatedly
until the message
After start
appears
in the multifunction display.
1 Distance driven since start
2 Time elapsed since start
3 Average speed since start
4 Average fuel consumption since start Fuel consumption since last reset

Press button
ÿ orè repeatedly
until the first function of the Trip
computer menu appears in the
multifunction display.

Press button j ork repeatedly
until the message
After reset
appears
in the multifunction display.
1 Distance driven since last reset
2 Time elapsed since last reset
3 Average speed since last reset
4 Average fuel consumption since last
reset
Function
Page
Fuel consumption statistics after
start
151
Fuel consumption statistics
since last reset
151
Call up range (distance to empty)
152


152 Controls in detailControl system
Resetting fuel consumption statistics
Press buttonÿ orè repeatedly
until the first function of the trip
computer menu appears in the
multifunction display.

Press button j ork repeatedly
until the reading that you want to reset
appears in the multifunction display.

Press and hold the reset button in the
instrument cluster (
page 119) until
the value is reset to0. Call up range (distance to empty)

Press button
ÿ orè repeatedly
until the first function of the trip
computer menu appears in the
multifunction display.

Press button j ork repeatedly
until the message
Distance
appears in
the multifunction display.
The calculated range based on the
current fuel tank level appears in the
multifunction display.
iAll statistics stored since the last
engine start will be reset approximately
four hours after the SmartKey in the
starter switch is turned to position 0 or
removed from the starter switch.
Resetting will not occur if you turn the
SmartKey back to position 1 or 2
within this time period.


277
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 Maintenance Booklet
and as required by the maintenance
service display. Contact 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 area.
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
vehicle.

419
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 placard with
the recommended tire inflation
pressures is located on the driver’s
door B-pillar. Some vehicles may have
supplemental tire inflation pressure
information for driving at high speeds
(page 310) or for vehicle loads less
than the maximum loaded vehicle con-
dition. If such information is provided,
it can be found on the placard located
on the inside of the fuel filler flap. The
tire inflation pressure should be
checked regularly and should only be
adjusted on cold tires. Follow tire
manufacturer’s maintenance recom-
mendation included with vehicle.

432 Technical dataFuels, coolants, lubricants, etc.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
gasoline operation.
Maintenance
Please inform your authorized
Mercedes-Benz Center if you use or have
used E85 fuel when your vehicle is deliv-
ered for maintenance or repairs.
Coolants
The engine coolant is a mixture of water
and anticorrosion/antifreeze, which
provides:

Corrosion protection


Freeze protection


Boiling protection (by increasing the
boiling point)
The cooling system was filled at the factory
with a coolant providing freeze protection
to approximately -22°F (-30°C) and corro-
sion protection.
If the antifreeze mixture is effective to
-22°F (-30°C), the boiling point of the cool-
ant in the pressurized cooling system is
reached at approximately 266°F (130°C). The coolant solution must be used
year-round to provide the necessary corro-
sion protection and increase boil-over pro-
tection. Refer to Maintenance Booklet for
replacement interval.
Coolant system design and coolant used
determine the replacement interval. The
replacement interval published in the
Maintenance Booklet is only applicable if
MB 325.0 anticorrosion/antifreeze solu-
tion or other Mercedes-Benz approved
products of equal specification (see Facto-
ry Approved Service Products pamphlet)
are used to renew the coolant concentra-
tion or bring it back up to the proper level.
To provide important corrosion protection,
the solution must be at least 45% anticor-
rosion/antifreeze (equivalent to freeze
protection to approximately - 22°F
[-30°C]).
iUse of E85 may reduce your driving
range.

451
Index
Engine oil 292, 428
Adding 294
Additives 428
Checking level 292
Consumption 292
Display messages 363–364
Filler neck 295
Messages in display 293, 363–364
Viscosity 438
Engine oil level see Oil level
ESP 25, 83, 438 Messages in display 355–356
Switching off 84
Switching on 85
Warning lamp 343
ETD 438 Safety guidelines 64
ETD (Emergency tensioning device) 69
Ethanol fuel At the gas station 288
Switching fuels 431
Exterior lamp switch 110
Exterior lamps Delayed shut-off 146
Exterior rear view mirror
Parking position* for 150 Exterior rear view mirrors
Adjusting 42
F
Fahrenheit Setting temperature units 137
Fastening the seat belts 44
Fine adjustment Cruise control 249
First aid kit 373
Flat tire 394 Inflating the spare tire 398
Lowering the vehicle 400
Mounting the spare wheel 394
Preparing the vehicle 394
Spare wheel 375
Tighten wheel bolts 400
Flexible fuel vehicles 431 At the gas station 288
Switching fuels 431
Flexible Service System (Canada vehicles) 330, 438
Fog lamp, rear Message in display 368
Switching on 113 Fog lamps, front
Messages in display 366
Replacing bulbs 385, 386
Switching on 113
Front air bags 65
Front lamps Bi-Xenon* type 388
Halogen-type 386
Messages in display 366–370
Replacing bulbs 385, 386
Switching on 110
Front passenger front air bag off indicator lamp 27, 76, 345
Front seat backrest Folding backrest back 40
Folding backrest forward 39
Front seat head restraints Installing 102 Power seat* 103
Manual seat 102
Power seat* 103
Removing 102 Power seat* 103
Front seats Heating* 106

452 IndexFSS see Flexible Service System (Canada vehicles)
Fuel 289 Additives 430
Cruising range 432
E85 (Ethanol fuel) 432
Fuel reserve warning lamp 344
Gasoline additives 430
Premium unleaded gasoline 289, 427, 429
Requirements 429
Reserve warning 25
Switching (Flexible fuel vehicle) 431
Technical data 426
Fuel additives 430
Fuel cap Message in display 365
Fuel consumption statistics After start 151
Since last reset 151
Fuel filler flap 288 Locking 288
Opening in an emergency 379
Unlocking 288 Fuel tank
Capacity 427
Filler flap 288
Fuels, coolants, lubricants etc. Capacities 426
Functions (control system) 124, 127 Resetting 135
Fuse box 411 In trunk 412
Fuse chart 410
Fuse extractor 410, 412
Fuses 410 Aid for changing 410
Fuse box in engine compartment 411
Fuse box in passenger compartment 411
Fuse box in trunk 412
Fuse chart 410
Fuse extractor 410, 412 G
Garage door opener* 29, 269
Gasoline
Gasoline additives 430
Gasoline see Fuel 289
GAWR 323
Gear range 438 Automatic transmission* 161
Limiting 161
Shifting into optimal 161
Gear range limit Canceling 161
Gear selector lever 25, 159 Cleaning 337
Position (Automatic transmission*) 25, 159, 162
Global Locking 92
Unlocking 92
Global Positioning System (GPS) 439
Glove box 23, 254 Closing 254
Opening 254
Good visibility 167
GPS 439
Gross Axle Weight Rating see GAWR

457
Index
MON 289
MON (Motor Octane Number) 439
Mph or km/h in speedometer 137
Multifunction display 123, 440
Displaying gear range 161
Selecting language 138
Setting date (day) 142
Setting date (month) 141
Setting date (year) 143
Standard display 127
Multifunction display messages ABS 353
BAS 354
Brake fluid 358
Brake pads 358
Coolant 359–361
Cruise control 362
Display 362
Doors 362
Engine oil 363–364
ESP 355–356
Fuel cap 365
Hood 365
Key, SmartKey 365
Lamps, exterior 366–370
Oil 363–364 Panorama roof with power tilt/sliding
panel* 372
Parking brake 358
Restraint system 356
SRS 356
Steering gear oil level 371
Tele Aid* 372
Telephone* 372
Trunk lid 372
Windshield washer fluid 372
Multifunction steering wheel 26, 124, 440Buttons 124
N
Navigation system* Operating 131
See separate COMAND* operating in-structions
Night security illumination 112 Setting 146
Normal occupant weight 324 O
Occupant Classification System see OCS
Occupant distribution 324
Occupant safety 60
Air bags 61
Children and air bags 62
Children in the vehicle 70
Fastening the seat belt 44
Front passenger front air bag off indica-tor lamp 27, 76, 345
Infant and child restraint systems 66, 70
LATCH child seat anchors 78
OCS 73, 440
Seat belts 44, 64
OCS 73, 440 Self-test 77
Odometer, main 25
Oil Adding 294
Consumption 292
Filler neck 295
Viscosity 438
Oil level Checking 290