2008 MERCEDES-BENZ R350 fuel reserve

29 At a glance
Instrument cluster
ItemPage
8Multifunction display with:

Trip odometer155

Main odometer157
9Tachometer with:
420
1Supplemental
Restraint System
(SRS) indicator lamp70,
424
?Engine malfunction in-
dicator lamp,
USA only417
±Engine malfunction in-
dicator lamp,
Canada only417
ItemPage
AHigh beam headlamp
indicator lamp147
qPreglow indicator
lamp153
aFuel gauge with:
Fuel tank reserve warning
lamp424
4Fuel filler flap indica-
tor: The fuel filler flap
is located on the rear
right-hand side352
1Vehicles with diesel engine only.
ItemPage
bMultifunction display with:

Outside temperature
indicator or digital
speedometer (depending
on selected setting in the
control system)157,
175

Transmission position
indicator194

Gear range indicator199

Program mode indicator200

Distance warning function
indicator* (Canada only)275

Rear window wiper
indicator61

Set speed for

Cruise control

Distronic*
(Canada only)
259
268

353 Operation
At the gas station
Briefly push on fuel filler flap at the
position indicated the arrow.
The fuel filler flap opens slightly.
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 off 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 418).
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.
Please contact gas station personnel in case
labels on the pump cannot be found.
For more information on gasoline, see “Premium
unleaded gasoline (gasoline engine)”
(
page 539), see “Fuel requirements”
(
page 540), and the Factory Approved Service
Products pamphlet (USA only) or contact an
authorized Mercedes-Benz Light Truck Center.
iDiesel engine:
Only use commercially available vehicular
ULTRA-LOW SULFUR HIGHWAY DIESEL FUEL
(15 ppm SULFUR MAXIMUM). Information on
diesel quality can normally be found on the fuel
pump. Please contact gas station personnel in
case labels on the pump cannot be found.
For more information on diesel fuels, refer to the
Factory Approved Service Products pamphlet
(USA only) or contact an authorized
Mercedes-Benz Light Truck Center.


424 Practical hints
What to do if …
ProblemPossible cause/consequenceSuggested solution
The yellow fuel tank reserve warning lamp in
the fuel gauge comes on while driving.The fuel level has gone below the reserve mark.Refuel at the next gas station
(
page 352).
1The red SRS indicator lamp comes
on while driving.There is a malfunction in the restraint systems.
The air bags or Emergency Tensioning Device
(ETDs) could deploy unexpectedly or fail to
deploy unexpectedly in an accident.Drive with added caution to the
nearest authorized
Mercedes-Benz Light Truck
Center.
Warning!G
In the event a malfunction of the SRS is indi-
cated as outlined above, the SRS may not be
operational. For your safety, we strongly
recommend that you contact an authorized
Mercedes-Benz Light Truck Center immedi-
ately to have the system checked, otherwise
the SRS may not be activated when needed
in an accident, which could result in serious
or fatal injury, or it might deploy unexpect-
edly and unnecessarily which could result in
an accident and/or injury to you or to
others.

461 Practical hints
What to do if …
Display symbolDisplay messagePossible cause/consequencePossible solution
4Reserve FuelThe fuel level has gone below the reserve
mark.Refuel at the next gas station
(
page 352).
Ultra Low-sulfur
Diesel Fuel OnlyVehicles with diesel engine only:
The fuel level has gone below the reserve
mark.Refuel at the next gas station
(
page 352).
Only use commercially available
vehicular ULTRA-LOW SULFUR
HIGHWAY DIESEL FUEL
(15 ppm SULFUR MAXIMUM).
L Tele Aid
InoperativeOne or more main functions of the
Tele Aid* system are malfunctioning.Have the Tele Aid* system checked
by an authorized Mercedes-Benz Light
Truck Center.
Tele Aid
BatteryThe emergency power battery for the
Tele Aid* system is malfunctioning. If the
vehicle battery is also malfunctioning or
drained, Tele Aid* will not be operational.Have the Tele Aid* system checked
by an authorized Mercedes-Benz Light
Truck Center.
tFunction
unavailableThis display appears if
buttontorson the multifunc-
tion steering wheel is pressed and the
vehicle is not equipped with a telephone.
WTop Up
Washer FluidThe fluid level has dropped to
about1/3of total reservoir capacity.
Add washer fluid (page 362).

537 Technical data
Fuels, coolants, lubricants, etc.
ModelCapacityFuels, coolants, lubricants, etc.
Power steeringapprox. 1.3 US qt (1.2 l)MB Power Steering Fluid or approved
Dexron III ATF
Front wheel hubsapprox. 1.5 oz (43 g) eachHigh temperature roller bearing grease
Brake systemMB Brake Fluid (DOT 4+)
Cooling systemR 320 CDI 4MATIC10.0 US qt (9.5 l)MB Anticorrosion/Antifreeze
R 3501, R 350 4MATIC
1USA only.
10.0 US qt (9.5 l)
R 550 4MATIC2
2Canada only.
12.7 US qt (12 l)
Fuel tank
including a reserve of21.1 US gal (80.0 l)
approx. 3.4 US gal (13.0 l)Gasoline engine:
Premium unleaded gasoline:
Minimum Posted Octane 91
(Avg.of96RON/86MON)
Diesel engine:
ULTRA-LOW SULFUR HIGHWAY DIESEL
FUEL (15 ppm SULFUR MAXIMUM)

552 Index
Fuel 352, 537, 539
Additives 540
Capacities, Fuel tank 537
Consumption statistics 185
Filling the tank 352
Fuel filler flap and cap 352
Fuel gauge 29
Fuel reserve warning lamp 29, 424
Premium unleaded
gasoline 352, 539, 540
Requirements, Octane rating 540
Fuel cap
Messages in the multifunction
display 452
Fuel filler flap 352
Locking/unlocking 352
Opening 352
Opening in an emergency 475
Fuels, coolants, lubricants etc. 536Fuses 518
Fuse box, Cargo compartment 519
Fuse box, Engine compartment 519
Fuse box, Passenger
compartment 520
Fuse chart 467, 518
Fuse extractor 467, 518
Replacing 518
Spare fuses 467, 518
G
Garage door opener 329
Gasoline see Fuel
GAWR 394
Gear range
Automatic transmission 199
Limiting 199
Shifting into optimal 202Gear selector lever 25, 53, 190
Gearshift pattern 53, 190
Message in the display 437
Messages in the multifunction
display 437
Position 193
Shifting procedure 193
Transmission position 194
Global locking/unlocking see
Key, SmartKey
Glove box 304
Good visibility 203
Gross Axle Weight Rating see GAWR
Gross Trailer Weight see GTW
Gross Vehicle Weight Rating see GVWR
Gross Vehicle Weight see GVW
GTW 394
GVW 394
GVWR 394

555 Index
Messages in the multifunction
display 453–454
Opening the power windows
(Summer opening feature) 244
Opening the tilt/sliding panel*
(Summer opening feature) 244
Opening the tilt/sliding sunroof*
(Summer opening feature) 244
Remote control 113
Replacing batteries 479
Selective settings 117
Start/stop button 41
Starter switch positions 39, 41
Starting the engine 54
Turning off engine 66
Unlocking and opening, Power
tailgate* 121
Kickdown 197
Kilopascal 394L
Labels 524
Certification label 524
Emission control information 525
Engine number 525
Paint code 524
Vehicle Identification Number
(VIN) 525
Lamps, exterior 481
Front 481
Light sensor, Messages in the multi-
function display 455
Messages in the multifunction
display 455–460
Rear 481
Lamps, Indicator and warning
ABS 27, 414, 415
Brakes 27, 415
Center console 31, 425
CHECK ENGINE 29, 417, 418
Distance warning lamp* 266
Engine diagnostics 29, 417, 418
ESP
®27, 419
Front passenger front
air bag off 76, 77, 81, 82, 425Fuel reserve 29, 424
High beam headlamps 29
Instrument cluster 26, 414
Parktronic* 283, 284
Preglow indicator, Diesel engine 29
Seat belt telltale 29, 82, 420
Seat heating* 139
Seat ventilation* 140
SRS 29, 70, 85, 424
Turn signals 27
Language, Setting 174
LATCH-type child seat anchors see
Children in the vehicle
Leather upholstery, Cleaning and
care of 412
License plate lamps 481
Messages in the multifunction
display 457
Replacing bulbs 481, 488
Light alloy wheels, Cleaning 410
Light sensor
Messages in the multifunction
display 455
Lighter see Cigarette lighter