open gas tank MERCEDES-BENZ S550 4MATIC 2008 W221 Owner's Manual

539 Operation
At the gas station
Take off the fuel filler cap and set it in
the direction of arrow 2 and place it
into holder 3 located on the inside of
the fuel filler flap.
To prevent fuel vapors from escaping
into open air, fully insert filler nozzle
unit.
Only fill your tank until the filler nozzle
unit cuts out – do not top off or over-
fill.
Replace the fuel cap by turning it clock-
wise until it audibly engages.
Close the fuel filler flap.
You should hear the latch close shut.
Warning!G
Overfilling of the fuel tank may create pres-
sure in the system which could cause a gas
discharge. This could cause the gas to spray
back out when removing the fuel pump noz-
zle, which could cause personal injury.
iMake sure to close the fuel filler flap before
locking your vehicle as the flap locking pin pre-
vents closing after you have locked the vehicle.
iOnly use premium unleaded gasoline with a
minimum Posted Octane Rating of 91 (average of
96 RON/86 MON). Please contact gas station
personnel in case labels on the pump cannot be
found.
For more information on gasoline see “Premium
unleaded gasoline” (
page 729), see “Fuel re-
quirements” (
page 729) and the Factory Ap-
proved Service Products pamphlet.
iLeaving the engine running and the fuel cap
open can cause the yellow engine malfunction
indicator lamp ± to illuminate.
For more information, see the “Practical hints”
section (
page 602).

743 Index
Fuel 539, 726, 729
Additives 730
Capacity, Fuel tank 726
Filling the tank 538
Fuel filler flap and cap 538
Fuel reserve warning lamp 29, 605
Gauge 29
Premium unleaded gasoline 539,
726, 729
Requirements, Octane rating 729
Fuel cap
Message in display 649
Fuel consumption statistics
Since last reset 268
Since start 268
Fuel filler flap 538
Locking/Unlocking 538
Fuel tank
Capacity 726
Filler flap 538
Fuels, coolants, lubricants etc.
Capacities 724Fuses 704
Fuse box in engine compartment 705
Fuse box in passenger
compartment 706
Fuse boxes in dashboard 706
Fuse chart (vehicle tool kit) 668
Fuse extractor (vehicle tool kit) 668
Replacing 704
Spare fuses (vehicle tool kit) 668
G
Garage door opener 518
Gasoline see Fuel
GAWR 576
Gear range
Automatic transmission 408
Limiting 408
Shifting into optimal 413
Gear selector lever 399
Gearshift pattern 399
Messages in display 617, 622, 624,
625, 667
Position 402
Shifting procedure 402
Transmission position 403Glove box 494
Gloves, Vehicle tool kit 668
GPS
Reception (COMAND) 163
Tele Aid 510
Gross Axle Weight Rating see GAWR
Gross Vehicle Weight Rating see GVWR
Gross Vehicle Weight see GVW
GVW 576
GVWR 577
H
Hands-free microphone 33
Hard plastic trim items, cleaning 594
Hazard warning flasher 377
Head restraints 353
Adjustment 353
Folding back and placing upright rear
head restraints 354
Front seat 353
Luxury active head restraints
(S 600 only) 55
Rear seat 354
Resetting activated luxury active head
restraints (S 600 only) 675