2005 MERCEDES-BENZ C CLASS COUPE fuel pressure

429
Technical data
Fuels, coolants, lubricants, etc.
Premium unleaded gasoline
Fuel requirements
Use only premium unleaded fuel meeting
ASTM standard D 439:

The octane number (posted at the
p um p) m us t be 91 mi n. It i s an a vera ge
of both the Research (R) octane num-
ber and the Motor (M) octane number:
(R+M) / 2). This is also known as the
ANTI-KNOCK INDEX.
Unleaded gasoline containing oxygenates
such as Ethanol, IPA, IBA and TBA can be
used provided the ratio of any one of these
oxygenates to gasoline does not exceed
10%; MTBE must not exceed 15%.
The ratio of Methanol to gasoline must not
exceed 3% plus additional cosolvents.
Using mixtures of Ethanol and Methanol is
not allowed. Gasohol, which contains 10%
Ethanol and 90% unleaded gasoline, can be
used.
These blends must also meet all other fuel
requirements, such as resistance to spark
knock, boiling range, vapor pressure, etc.
!To maintain the engine’s durability and
performance, premium unleaded gaso-
line must be used. If premium unleaded
is not available and low octane fuel is
used, follow these precautions:

Have the fuel tank only partially
filled with unleaded regular and fill
up with premium unleaded as soon
as possible.


Avoid full throttle driving and abrupt
acceleration.


Do not exceed an engine speed of
3000 rpm if the vehicle is loaded
with a light load such as two per-
sons and no luggage.


Do not exceed
2/3 of maximum ac-
celerator pedal position if the vehi-
cle is fully loaded or operating in
mountainous terrain.
iFlexible Fuel Vehicles (identified by a
label reading Premium gasoline or
E85 only! on fuel filler flap) are de-
signed to operate on premium unlead-
ed gasoline or Ethanol fuel (E85), or any
mixture of these two.
For more information, see “Flexible
Fuel Vehicles” (
page 431).

439
Technical terms
GPS*
(G
lobal P
ositioning S
ystem)
Satellite-based system for relaying
geographic location information to and
from vehicles equipped with special re-
ceivers. Employs CD digital maps for
navigation.
GVW (G
ross V
ehicle W
eight)
(
page 324)
GVWR (Gross V
ehicle W
eight R
ating)
(
page 324)
Instrument cluster The displays and indicator/warning
lamps in the driver’s field of vision, in-
cluding the tachometer, speedometer
and fuel gauge. Kickdown
Depressing the accelerator past the
point of resistance shifts the transmis-
sion down to the lowest possible gear.
This very quickly accelerates the vehi-
cle and should not be used for normal
acceleration needs.
Kilopascal (kPa) (
page 324)
Lock button Button on the door which indicates
whether the door is locked or un-
locked. Pushing the lock button down
on an individual door from inside will
lock that door.
Maintenance System (U.S. vehicles) Maintenance service indicator in the
multifunction display that informs the
driver when the next vehicle mainte-
nance service is due. The Maintenance
System in your vehicle tracks distance
driven and the time elapsed since your
last maintenance service, and calls for
the next maintenance service accord-
ingly. Maximum load rating
(
page 324)
Maximum loaded vehicle weight (page 324)
Maximum tire inflation pressure (page 324)
Memory function* Used to store three individual seat,
steering wheel and mirror positions for
each SmartKey.
MON (Motor O
ctane N
umber)
The Motor Octane Number for gasoline
as determined by a standardized meth-
od. It is an indication of a gasoline's
ability to resist undesired detonation
(knocking). The average of both the
MON (Motor Octane Number) and
->RON (Research Octane Number) is
posted at the pump, also known as
ANTI-KNOCK INDEX.

456 IndexM
Main dimensions 424
MaintenanceVehicles with E85 fuel 432
Maintenance service Overdue 331
Types 331
Maintenance service indicator Calling up 331, 332
Clearing 331, 332
Maintenance System (USA vehicles) 330, 439
Malfunction Displaying 132
Malfunction memory Calling up 132
Clearing 133
Manual headlamp mode 111
Manual operations Fuel filler flap 379
Interior lighting control 118
Locking the vehicle 379
Panorama roof with power tilt/sliding panel* 381
Unlocking the driver’s door 377
Unlocking the trunk lid 378 Unlocking transmission gear selector
lever 380
Manual seat Adjusting 36
Adjusting backrest tilt 36
Adjusting head restraint height 37
Adjusting head restraint tilt 37, 39
Adjusting seat cushion tilt 36
Adjusting seat height 36
Front seat head restraints 102
Seat fore and aft adjustment 36
Manual transmission 157 Shifting into reverse 158
Starting with 48
MAXCOOL maximum cooling 188
Maximum load rating 324
Maximum loaded vehicle weight 324
Maximum tire inflation pressure 324
MB Tex upholstery Cleaning 338
Mechanical key 377
Memory function* 107, 439 Recalling positions from memory 108
Storing exterior rear view mirror park-
ing position 109 Storing key dependent settings 108
Menus 124 AUDIO 129
In control system 126, 127
NAVI* 131
Settings menu 133
Standard display 128
Submenus 125
TEL* 153
Trip computer 151
Vehicle status message memory menu 132
Microphone Hands-free microphone 29
Miles/kilometers in speedometer Setting 137
Mirrors Adjusting 42
Auto-dimming* for rear view mirrors 168
Exterior rear view mirror parking position* 150, 169
Exterior rear view mirrors 42
Interior rear view mirror 42, 167
Storing exterior rear view mirror park-
ing position* 109

460 IndexRange (distance to empty)Calling up 152
Reading lamp 29
Rear bench seat Foldable 250
Rear fog lamp 385 Bulb 385
Switching on 113
Rear lamp bulbs Replacing 390
Rear lamps Messages in display 366–370
Rear lamps see Tail lamps
Rear passenger compartment Adjustable air vents 194
Rear passenger compartment, adjustable air ventsClimate control 180
Rear seat head restraints 103 Adjusting 103
Adjusting tilt 105
Folding back 104
Installing 105
Placing upright 105
Removing 105
Seats 105 Rear seats
Adjusting head restraint height 103
Head restraints 103
Rear view mirrors see Mirrors
Rear window defroster 170 Activating 170
Deactivating 170
Recommended tire inflation pressure 325
Reconnecting Vehicle battery 403
Refilling Coolant 296
Headlamp cleaning system* 299
Refrigerant Air conditioner 428
Refuelling 288
Regular checks 290
Reinstalling vehicle battery 402
Remote control SmartKey 90
Remote door unlock With Tele Aid* 268 Removing
Spare wheel 375
Vehicle battery 402
Wheel 396
Wiper blades 393
Replacing Backup lamp bulbs 390
Batteries (SmartKey) 382, 383
Brake lamp bulbs 390
Bulbs 384
Front lamp bulbs 385, 386
Front turn signal bulbs 388, 389
High beam bulbs (xenon-type* headlamps) 389
License plate lamp bulbs 392
Low beam bulbs 387
Parking lamp bulbs 388, 390
Rear fog lamp bulb 390
Rear lamp bulbs 385, 390
Rear turn signal bulbs 390
Side marker lamp bulbs 390, 391
Standing lamp bulbs 388, 390
Wiper blades 393
Reset button in the instrument cluster 134, 135