2005 MERCEDES-BENZ S CLASS fuel pressure

422 Technical dataRims 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, 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. Damage to the tires or the vehi-
cle may be the result.
iFurther information on tires and rims is
available at any authorized
Mercedes-Benz Center. A placard with
the recommended tire inflation pres-
sures is located on the driver's door
B-pillar. Some vehicles may have sup-
plemental tire pressure information for
driving at high speeds (
page 306) or
for vehicle loads less than the maxi-
mum loaded vehicle condition. If such
information is provided, it can be found
on the placard located on the inside of
the fuel filler flap. 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.

432 Technical dataFuels, coolants, lubricants, etc.Premium unleaded gasoline
Fuel requirements
Use only 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 co-solvents.
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.
Gasoline additives
A major concern among engine manufac-
turers is carbon build-up caused by gaso-
line. Mercedes-Benz recommends only the
use of quality gasoline containing additives
that prevent the build-up of carbon depos-
its.
After an extended period of using fuels
without such additives, carbon deposits
can build up especially on the intake valves
and in the combustion area, leading to en-
gine performance problems such as:

Warm-up hesitation


Unstable idle


Knocking/pinging


Misfire


Power loss
!To maintain the engine’s durability and
performance, premium unleaded gaso-
line must be used. If premium unleaded
gasoline 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
persons and no luggage.


Do not exceed 2/3 of maximum
accelerator pedal position if the ve-
hicle is fully loaded or operating in
mountainous terrain.

457 Index
M
Main 428
Main Dimensions 428
Maintenance 12, 328
Maintenance service
Calling up the maintenance service
indicator 329
Overdue 329
Maintenance service indicator
Calling up 329
Clearing 328
Resetting 329
Maintenance System (U.S. vehicles) 440
Manual headlamp mode 132
Manual operations
Closing the power tilt/sliding
sunroof 386
Fuel filler flap 385
Interior lighting control 137
Locking the vehicle 384
Opening the power tilt/sliding
sunroof 386
Power tilt/sliding sunroof 386
Unlocking the driver’s door 383Manual shift program S 55 AMG
Activating 183
Automatic transmission 183
Deactivating 185
Massage function 123
MAXCOOL
Maximum cooling 198
Maximum inflation pressure 323
Maximum load rating 323
Maximum loaded vehicle weight 323
Mechanical key 383
Memory function 128, 440
Recalling positions from
memory 129
Storing exterior rear view mirror park-
ing positions 130
Storing key dependent settings 129
Menus 145
AUDIO 148
Distronic* 156, 220
In control system 146, 147
NAVI 155
Settings menu 160Standard display 148
Submenus 145
TEL* 153
Trip computer 157
Vehicle status message memory 159
Microphone
Hands-free microphone 29
Miles/kilometers in speedometer
Setting 163
Mirrors
Activating exterior rear view mirror
parking position 187
Adjusting 41
Auto-dimming for rear view
mirror 186
Exterior rear view mirror 41
Exterior rear view mirror parking
position 171
Interior rear view mirror 41
Storing exterior rear view mirror park-
ing position 130
MON 284
MON (Motor Octane Number) 440

461 Index
PRE-SAFE see Preventive occupant
safety 70
Preventive occupant safety
(PRE-SAFE) 70
Problems
While driving 54
With vehicle 17
Product information 9
Production options weight 323
Program mode selector switch 441
Proper use of the vehicle 16
PSI 323
PULSE function (Massage function) 123
Q
Quick search
Phone book* 154
R
Radio
Selecting satellite radio*
stations 149
Selecting stations 149
Radio transmitters, control and
operation 280
Range (distance to empty)
Calling up 158Reading lamps in the front 138
Reading lamps in the rear 138
Rear fog lamp 390
Bulb 390
Switching on 134
Rear lamp bulbs
Replacing 394
Rear lamps see Tail lamps
Rear passenger compartment
Adjustable air vents 204
Rear seat head restraints
Folding back with switch 120
Placing upright 121
Rear seats 120
Rear seats 117
Fore and aft adjustment 118
Head restraint height* 117, 118
Individual seats* 117
Passenger seat fore and aft
adjustment 119
Passenger seat head restraint
height 119
Passenger seat height 119
Rear seat head restraints 120Seat height 118
Setting front passenger seat position
from rear* 118
Rear view mirror 29
Rear view mirror auto-dimming 186
Rear view mirrors see Mirrors
Rear window
Blocking operation 78
Rear window defroster 201
Activating 201
Deactivating 201
Rear window sunshade* 191
Recommended inflation pressure 323
Reconnecting
Vehicle battery 405
Recovery services
For stolen vehicle 263
Refueling 283
Regular checks 284
Regular driving style 232
Reinstalling vehicle battery 404
Remote control
SmartKey 92
SmartKey with KEYLESS-GO* 96

467 Index
Tightening torque (Wheel bolts) 402
Tilt/sliding sunroof
Stopping 213
Synchronizing 213
TIN 324
Tire
Vehicle maximum load on 324
Tire and Loading Information 300
Tire and loading terminology 322
Tire care and maintenance 297
Tire Identification Number see TIN
Tire inflation pressure
Checking 285, 305, 307
Setting units 164
Tire inflation pressure see the placard on
the fuel filler flap
Tire inspection 297
Tire load rating 324
Tire ply composition and material
used 324
Tire speed rating 278, 314, 324, 442
Tire terminology 322
Tire traction 277Tires 296
Direction of rotation 299
Driving instructions 276
Messages in display 372–378
Retreads 296
Rotating 325
Service life 297
Temperature 306, 321
Tire inflation pressure monitor warning
lamp 344
Tread depth 298, 326
Wear pattern 325
Winter 326
Tools 379
Tow-away alarm 89
Arming 89
Disarming 89
Disarming for transport 89
Towing eye bolt (vehicle tool kit) 380
Installing 410
Towing the vehicle 408
Traction 179, 324, 442
Transmission see Automatic
transmission 292
Tread 324
Tread depth 298Tread depth (tires) 326
Treadwear indicators 324
Trip computer 157
Trip odometer
Resetting 141
Trunk
Auxiliary fuse box 412
Closing 105
Closing from the inside
automatically* 105
Lighting 138, 139
Lock button, KEYLESS-GO* 101
Message in display 371
Opening 103
Opening from inside vehicle 104
Opening with SmartKey 95
Parcel net 250
Tie-down hooks 241
Trunk lid 103, 105
Trunk lock 384
Unlocking with SmartKey 95
Unlocking with SmartKey with
KEYLESS-GO* 102
Trunk lid
Limiting opening height* 105
Trunk lid emergency release 111