2006 MERCEDES-BENZ C350 4MATIC fuel pressure

444 Technical dataFuels, coolants, lubricants, etc.In areas where carbon deposits may be
encountered due to lack of availability of
gasolines which contain these additives,
Mercedes-Benz recommends the use of
additives approved by us for use on
Mercedes-Benz vehicles. Refer to Factory
Approved Service Products pamphlet for a
listing of approved product(s). Follow
directions on product label.
Do not blend other fuel additives with fuel.
This only results in unnecessary cost and
may be harmful to engine operation.
Damage or malfunction resulting from
poor fuel quality or from blending
additional fuel additives other than those
tested and approved by us for use on
Mercedes-Benz vehicles listed in the
Factory Approved Service Products
pamphlet are not covered by the
Mercedes-Benz Limited Warranty.
Fuel requirements
Only use premium unleaded fuel:

The octane number (posted at the
pu mp ) m ust b e 91 m i n. It is an a ve ra 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.
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
corrosion protection.
If the antifreeze mixture is effective
to -22°F (-30°C), the boiling point of the
coolant in the pressurized cooling system
is reached at approx. 266°F (130°C).

451 Technical terms
GPS
(G
lobal P
ositioning S
ystem)
Satellite-based system for relaying
geographic location information to and
from vehicles equipped with special
receivers. Employs CD digital maps for
navigation.
GVW
(G
ross V
ehicle W
eight) (
page 332)
GVWR
(G
ross V
ehicle W
eight R
ating)
(
page 332)
Instrument cluster
The displays and indicator/warning
lamps in the driver’s field of vision,
including the tachometer, speedo-
meter, engine temperature display 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
vehicle and should not be used for
normal acceleration needs.
Kilopascal (kPa)
(
page 332)
Locking knob
Knob on the door which indicates
whether the door is locked or un-
locked. Pushing the locking knob 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 tire inflation pressure
(
page 332)
Maximum load rating
(page 332)
Maximum loaded vehicle weight
(page 332)
Memory function*
Used to store three individual seat,
steering wheel and mirror positions.

467 Index
R
Radio
Operation 202, 207
Selecting stations (Control
system) 136
Radio transmitters 291
Range (distance to empty) 156
Reading lamp 125
Rear bench seat, foldable* 253
Rear door window
Blocking operation 85
Rear fog lamp see Fog lamps
Rear lamps see Tail lamps
Rear outer seats
Adjusting head restraint height 110
Rear passenger compartment
Adjustable air vents 184, 197
Rear seat ashtray see Ashtray
Rear seat head restraints see Head
restraints
Rear view mirrors see Mirrors
Rear window defroster 175
Rear window sunshade* 174
Recommended tire inflation
pressure 333Recovery services, Stolen vehicle
(Tele Aid*) 273
Refrigerant, Air conditioning 442
Refueling 294
Regular checks 295
Remote control, SmartKey 98
Remote door unlock (Tele Aid*) 272
Replacing bulbs
Additional turn signal lamps 403
Backup lamp 404
Brake lamps 404
Corner-illuminating front fog
lamps* 398
Fog lamps 404
Headlamps 398, 400, 402
High beam headlamps 398, 400
License plate lamps 404
Low beam headlamps 400
Parking lamps 401, 403, 404
Side marker lamps 403
Standing lamps 401, 403
Tail lamps 399, 404
Turn signal lamps 401, 403, 404
Reporting safety defects 18
Research Octane Number see RONReset button, In the instrument
cluster 127, 141
Reset tool
Location 394
Residual heat utilization 197
Residual ventilation 197
Restraint system
see Children in the vehicle
see Infant and child restraint systems
see SRS
Restraint system see Infant and child
restraint systems
Reverse gear position, Automatic
transmission* 49
Reverse gear position, Manual
transmission 48
Rims 333, 432
Roadside Assistance 12
RON 453
Roof rack* 250
Rubber parts, Cleaning 346
Run Flat Indicator* (Canada only) 317