open gas tank MERCEDES-BENZ R350 2007 R171 Owner's Manual

360 Operation
At the gas station
Refueling
The fuel filler flap is located on the
right-hand side of the vehicle towards the
rear. Locking/unlocking the vehicle with
the SmartKey or the SmartKey with
KEYLESS-GO* automatically
locks/unlocks the fuel filler flap.
Turn off the engine

by turning the SmartKey to
position0 (
page 39). Remove the
SmartKey from the starter switch.

by pressing the KEYLESS-GO*
start/stop button (
page 41).
Open the driver’s door (with the
driver’s door open, starter switch is
now in position 0, same as
SmartKey removed from starter
switch).
Briefly push on fuel filler flap at the
position indicated the arrow.
The fuel filler flap opens slightly.
Warning!G
Gasoline and diesel fuels are highly flamma-
ble and poisonous. They burn violently and
can cause serious injury.
Never allow sparks, flame or smoking mate-
rials near gasoline or diesel fuel!
Turn off the engine before refueling.
Whenever you are around gasoline or diesel
fuel, avoid inhaling fumes and skin or cloth-
ing contact, extinguish all smoking materi-
als.
Direct skin contact with gasoline or diesel
fuels and the inhalation of gasoline or diesel
fuel vapors can damage your health.
Warning!G
Do not fill diesel tanks with gasoline. Do not
mix diesel fuel with gasoline. Otherwise the
fuel system and engine could be damaged.
In addition, the vehicle could catch fire.
!Damage resulting from mixing gasoline with
diesel fuel is not covered by the Mercedes-Benz
Limited Warranty.
!Diesel engine: When filling the diesel fuel
tank using fuel containers, place a filling filter, a
suede cloth or a clean flannel cloth as a filter.
Otherwise, particles from the fuel container
could clog the fuel lines and/or the diesel injec-
tion system.

361 Operation
At the gas station
Open the fuel filler flap completely.
Turn the fuel cap to the counterclock-
wise and hold on to it until possible
pressure is released.
Take off the fuel cap.
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 up or overfill.
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.
!The fuel filler cap is tethered to the fuel filler
neck. Do not drop the cap. It could damage the
vehicle paint finish.
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
nozzle, which could cause personal injury.
iLeaving the engine running and the fuel cap
open can cause the yellow fuel tank reserve
warning lamp to flash and the? malfunction
indicator lamp (USA only) or the± malfunc-
tion indicator lamp (Canada only) comes on.
For more information, see “Practical hints”
(
page 424).
iGasoline engine:
Only use premium unleaded gasoline with a min-
imum Posted Octane Rating of 91 (average of
96 RON/86 MON). Information on gasoline
quality can normally be found on the fuel pump.
For more information on gasoline, see see “Pre-
mium unleaded gasoline (gasoline engine)”
(
page 541), see “Fuel requirements”
(
page 542), and the Factory Approved Service
Products pamphlet.
iDiesel engine:
Only use commercially available vehicular diesel
fuels No. 2 or No. 1 (ASTM D975 No. 2-D or
No. 1-D). Information on diesel quality can
normally be found on the fuel pump.
The sulfur content in diesel fuel should not
exceed 50 parts per million (ppm). When using
diesel fuel with a sulfur content of above
300 ppm, the engine oil interval should be
shortened.
For more information on diesel fuels, refer to the
Factory Approved Service Products pamphlet or
contact an authorized Mercedes-Benz Light
Truck Center.
!Diesel engine:
The engine is more susceptible to wear and
damage if you use

marine diesel fuel

heating oil

additives
The use of such non-approved fuels and/or
special additives is not covered by the
Mercedes-Benz Limited Warranty.

362 Operation
At the gas station
Low outside temperatures
(diesel engine)
To prevent malfunctions, diesel fuel with
improved cold flow characteristics is of-
fered in the winter months. Check with
your fuel retailer.Check regularly and before a long trip
Open the hood (page 364).
1Coolant level
2Brake fluid
3Windshield washer system and
headlamp cleaning system*Engine oil level
For more information on engine oil, see
“Engine oil” (page 366).
Coolant
For normal replenishing, use water (pota-
ble water quality). For more information,
see “Coolant level” (
page 370) and
“Fuels, coolants, lubricants, etc.”
(
page 538).
Brake fluid
!Do not fill the tank with gasoline. Do not
blend diesel fuel with gasoline or kerosine. The
fuel system and engine will otherwise be dam-
aged, which is not covered by the
Mercedes-Benz Limited Warranty.
!If you find that the brake fluid in the brake
fluid reservoir has fallen to the minimum mark or
below, have the brake system checked for brake
pad thickness and leaks immediately. Contact an
authorized Mercedes-Benz Light Truck Center
immediately. Do not add brake fluid as this will
not solve the problem. For more information, see
“Brake fluid” (
page 541).

554 Index
Fog lamp, Front see Corner-illuminating
front fog lamps*
Fog lamp, Rear 150
Messages in the multifunction
display 466
Replacing bulbs 484
4-ETS 106
Front air bags 77
Front defroster 224, 239
Front lamps see Headlamps
Front passenger front
air bag 77, 88, 93, 431
Front passenger front air bag off
indicator lamp 31, 77, 88, 93, 431
Front seat head restraints see
Head restraints
Front towing eye 518
FSS PLUS (Canada vehicles) 407
Fuel 360, 539, 541
Additives 542
Capacities, Fuel tank 539Consumption statistics 191
Filling the tank 360
Fuel filler flap and cap 360
Fuel gauge 29
Fuel reserve warning lamp 29, 430
Premium unleaded gasoline 360,
541, 542
Requirements, Octane rating 542
Fuel cap
Messages in the multifunction
display 460
Fuel filler flap 360
Locking/unlocking 360
Opening 360
Opening in an emergency 479
Fuels, coolants, lubricants etc. 538
Fuses 520
Fuse box, Cargo compartment 521
Fuse box, Engine compartment 521
Fuse box, Passenger
compartment 522
Fuse chart 472, 520
Fuse extractor 472, 520
Replacing 520
Spare fuses 472, 520G
Garage door opener* 337
Gasoline see Fuel
GAWR 401
Gear range
Automatic transmission 205
Limiting 205
Shifting into optimal 208
Gear selector lever 25, 54, 197
Gearshift pattern 54, 197
Message in the display 443
Messages in the multifunction
display 443
Position 200
Shifting procedure 200
Transmission position 201
Global locking/unlocking see
Key, SmartKey
Glove box 311
Good visibility 212