2011 MERCEDES-BENZ GL350 BlueTEC fuel system

Problems with the fuel and fuel tankProblemPossible causes/consequences and M SolutionsFuel is leaking from the
vehicle.GRisk of explosion or fire
The fuel line or fuel tank is defective.
XTurn the SmartKey to position 0(Y page 147) in the ignition lock
immediately and remove it.XDo not restart the engine under any circumstances.XConsult a qualified specialist workshop.The fuel filler flap
cannot be opened.The fuel filler flap is not released.
or
The SmartKey batteries are discharged.XUnlock the vehicle using the mechanical key ( Y page 75).XOpen the tailgate.XManually unlock the fuel filler flap using the emergency release
( Y page 161).The fuel filler flap is released, but the opening mechanism is
jammed.XManually unlock the fuel filler flap using the emergency release
( Y page 161).XConsult a qualified specialist workshop.The fuel tank in a diesel
engine vehicle has
been run completely
dry and the engine will
not start.There is air in the fuel system.XRefuel the vehicle with at least 5.3 US qt (5 liters) of diesel.XTurn the ignition on for at least 10 seconds. Turn the SmartKey
to position 2(Y page 147) in the ignition lock.XStart the engine continuously for up to 10 seconds until it runs
smoothly.
If the engine does not start:
XTurn the ignition on again for approximately 10 seconds. Turn
the SmartKey to position 2(Y page 147) in the ignition lock.XStart the engine again continuously for up to 10 seconds until
it runs smoothly.
If the engine does not start after three attempts:
XConsult a qualified specialist workshop.162RefuelingDriving and parking
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Driving tips
General driving tips
Important safety instructions
GWarning!
Please do not forget that your primary
responsibility is to drive the vehicle. A driver’s
attention to the road must always be his/her
primary focus when driving. For your safety
and the safety of others, we recommend that
you pull over to a safe location and stop
before placing or taking a telephone call.
If you choose to use the telephone 25
while
driving, please use the hands-free device and
only use the telephone when road, weather
and traffic conditions permit. Some
jurisdictions prohibit the driver from using a
mobile telephone while driving a vehicle.
Only operate the COMAND 25
(Cockpit
Management and Data System) if road,
weather and traffic conditions permit.
Otherwise, you may not be able to observe
traffic conditions and could endanger yourself
and others.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your vehicle is
covering a distance of 44 feet (approximately
14 m) every second.
Drive sensibly – save fuel
To save fuel, observe the following notes:
XKeep tires at the recommended inflation
pressures.XRemove unnecessary cargo.XRemove the roof carrier when not in use.XRemove the basic carrier bars when not in
use.XMaintain a low engine speed until the
engine is warm.XAvoid frequent acceleration and
deceleration.XHave all maintenance work performed at
the service intervals specified in the
Service Booklet or indicated by the service
interval indicator.
Fuel consumption is also increased by driving
in cold weather, in stop-and-go traffic, on
short trips and in mountainous areas.
Drinking and driving
GWarning
Drinking and driving and/or taking drugs and
driving are very dangerous combinations.
Even a small amount of alcohol or drugs can
affect your reflexes, perceptions and
judgment.
The possibility of a serious or even fatal
accident are greatly increased when you drink
or take drugs and drive.
Do not drink or take drugs and drive or allow
anyone to drive who has been drinking or
taking drugs.
Pedals
GWarning
Make sure absolutely no objects are
obstructing the pedals' range of movement.
Keep the driver's footwell clear of all
obstacles. If there are any floormats or
carpets in the footwell, make sure that the
pedals still have sufficient clearance.
During sudden driving or braking maneuvers,
the objects could get caught between the
pedals. You could then no longer brake or
accelerate. This could lead to accidents and
injury.
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Check list before driving off-roadXEngine oil level: check the engine oil and
top it up if necessary.
The oil supply can only be guaranteed on
steep slopes if the engine oil level is
sufficient.
! If the engine oil warning lamp lights up
while the vehicle is in motion, stop the
vehicle in a safe place as soon as possible.
Check the engine oil level. The engine oil
warning lamp warning must not be ignored.
Continuing the journey while the symbol is
displayed could lead to engine damage.
XWheel-changing tool kit: check that the
jack is working and make sure you have the
wheelbrace, a robust tow cable and a
folding spade in the vehicle.XWheels and tires: check the tire tread
depth and tire pressure. A table with the
recommended tire pressures can be found
on the B-pillar on the driver's side of your
vehicle.XCheck for damage and remove any foreign
objects, e.g. small stones, from the
wheels/tires.XReplace any missing valve caps.XReplace dented or damaged wheels.XWheels: dented or deformed wheels could
result in a loss of tire pressure and damage
the tire bead. Therefore, check the wheels
before driving off-road and replace them if
necessary.
Check list after driving off-road
GWarning
If you feel a sudden significant vibration or
ride disturbance, or you suspect that possible
damage to your vehicle has occurred, you
should turn on the hazard warning flashers,
carefully slow down, and drive with caution to
an area which is a safe distance from the road.
Inspect the tires and the vehicle underbody
for possible damage. If the vehicle appears
unsafe, have the vehicle towed to the nearest
authorized Mercedes-Benz Center or tire
dealer for repairs.
Driving over rough terrain places greater
demands on your vehicle than driving on
normal roads. After driving off-road, check
the vehicle. This allows you to detect damage
promptly and reduce the risk of an accident
to yourself and other road users.XDeactivate the off-road drive program
( Y page 204) or the LOW RANGE off-road
gear ( Y page 157).XDeactivate DSR ( Y page 203).XSet the differential lock setting to AUTO on
the selector wheel ( Y page 207).XLower the vehicle level again to a level
suitable to the road conditions, e.g. to the
highway/high-speed level.XClean the headlamps and rear lights and
check for damage.XClean the front and rear license plates.XClean the wheels/tires, wheel arch and the
underbody with a water jet. Check for
damage and remove any foreign objects.XAfter the trip, examine without fail the
entire undercarriage, wheels, tires, brakes,
bodywork structure, steering, chassis and
exhaust system for damage.XCheck whether twigs or other parts of
plants have become trapped. These
increase the risk of fire and can damage
fuel pipes, brake hoses or the rubber
bellows of the axle joints and propeller
shafts.XAfter driving for extended periods across
sand, mud, gravel, water or in similarly dirty
conditions, have the brake discs, wheels,
brake pads/linings and axle joints checked
and cleaned.XIf you detect strong vibrations after off-road
travel, check for foreign objects in the
wheels and drive train and remove them ifDriving tips175Driving and parkingBA 164.8 USA, CA Edition B 2011; 1; 2, en-USd2sboikeVersion: 3.0.3.52010-04-21T15:08:44+02:00 - Seite 175Z

Crossing vehicles
DISTRONIC may detect vehicles that are
crossing your lane by mistake. Activating
DISTRONIC at, for example, a traffic light with
crossing traffic, could cause your vehicle to
pull away at the wrong time.
Level control
Important safety guidelines
Level control automatically adapts the vehicle
level to the current operating and driving
situation. This results in reduced fuel
consumption and improved handling.
Vehicles with ADS: when you are driving in
ADS COMF or ADS AUTO(Y page 194), the
vehicle is automatically lowered to high-
speed level as the speed increases. As the
vehicle speed decreases, the vehicle is raised
back up to highway level. In ADS
SPORT(Y page 194), the vehicle skips
highway level and is lowered directly to high-
speed level.
Make changes to the vehicle level while the
vehicle is in motion. This enables the vehicle
to adjust to the new level as quickly as
possible.
The vehicle level may change visibly if you
park the vehicle and the outside temperature
changes. If the temperature drops, the
vehicle level is lower; with an increase in
temperature, the vehicle level rises.
When you unlock the vehicle or open a door,
the vehicle begins to balance the load
discrepancies while still parked. However, for
significant level changes, e.g. after the
vehicle has been stationary for a long period,
the engine must be on. For safety reasons,
the vehicle is only lowered when the doors are
closed. Lowering is interrupted if a door is
opened, and it continues once the door has
been closed.
GWarning!
Make sure that nobody is in the vicinity of the
wheel arch or the underbody when changing
the vehicle level. You could otherwise trap
yourself or others.
GWarning!
Always select as low a vehicle level as
possible. If the vehicle level is high, the vehicle
center of gravity shifts upwards. This
increases the risk of the vehicle tipping over.
Adapt your driving style to suit the vehicle
level. ESP® cannot reduce the risk of an
accident if you drive too fast. ESP® cannot
override the laws of physics.
! When driving on extremely rough terrain,
select a high vehicle level in good time.
Make sure that there is always sufficient
ground clearance to prevent damage to the
vehicle.
! Remove the key from the ignition before
raising one or more wheels with the
appropriate equipment.
Information on "Off-road driving"; see
(Y page 173).
Vehicles without the extended Off-Road
Pro engineering package
Basic setting
The extent to which the vehicle is raised or
lowered depends on the basic setting
selected.
Select:
RRaised level for off-road driving
RHighway/high-speed level for normal roads
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The individual vehicle levels differ from
highway level as follows:
R +2.3 in (+ 60 mm) in raised level
R +/–0 in (+/–0 mm) in highway level 26
R –0.6 in (–15 mm) in high-speed level
Raised level
Only select raised level if this is appropriate
for the road conditions. Otherwise, fuel
consumption increases and handling may be
affected.
Your selection remains stored even if you
remove the key from the ignition lock.XStart the engine.
If indicator lamp ; is not lit:
XPress button :.
The vehicle rises to raised level.
While the adjustment is taking place, a
message appears in the multifunction
display, e.g.:
If you press the V, U , & or *
button on the multifunction steering wheel,
the message will disappear.
Once the raised level has been reached, you
will see a message in the multifunction
display, for example:
If you have not previously selected the off-
road menu ( Y page 220) in the on-board
computer, the message disappears after
about five seconds.
Highway/high-speed level
! Make sure that there is enough ground
clearance when the vehicle is being
lowered. It could otherwise hit the ground,
damaging the underbody.
XStart the engine.
If indicator lamp ; is lit:
XPress button :.
The vehicle adjusts to highway level.
While the adjustment is taking place, a
message appears in the multifunction
display, e.g.:
26 Ground clearance: 8.5 in (217 mm).190Driving systemsDriving and parking
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If you press the V, U , & or *
button on the multifunction steering wheel,
the message will disappear.
Once highway level has been reached, all
indicator lamps = go out. You will see a
message in the multifunction display, for
example:
If you have not previously selected the off-
road menu ( Y page 220) in the on-board
computer, the message disappears after
about five seconds.
The vehicle automatically selects highway
level if you are driving faster than 55 mph
(88 km/h). Depending on the ADS setting,
the vehicle is lowered to high-speed level at
speeds higher than this.
i If you are towing a trailer, the vehicle is
not lowered to high-speed level.
Vehicles with the extended Off-Road
Pro engineering package
Basic settings
The extent to which the vehicle is raised or
lowered depends on the basic setting
selected.
Select:
R Off-road level 3 for freeing the vehicle in
impassable terrain at low speeds only
R Off-road level 2 for driving on normal off-
road terrain
R Off-road level 1 for driving on easily
negotiable off-road terrain
R Highway/high-speed level for normal roads
The individual vehicle levels differ from
highway level as follows:
R +3.5 in (+ 90 mm) in off-road level 3
R +2.3 in (+ 60 mm) in off-road level 2
R +1.2 in (+ 30 mm) in off-road level 1
R +/–0 in (+/–0 mm) in highway level
R –0.6 in (–15 mm) in high-speed level
Off-road levelsGWarning!
Vehicle off-road level 3 is not intended for use
on paved roads. This vehicle level is intended
for clearing impracticable situations at low
speed exclusively. The vehicle has a very high
center of gravity in off-road level 3. This
increases the overturning hazard.
R Select off-road level 3 exclusively for
clearing impracticable situations at low
speed.
R Adapt your driving style to the modified
conditions.
R Do not exceed a speed of 12 mph
(20 km/h).
R Avoid extreme, quick steering movements.
R Keep in mind the vehicle’s driving
characteristics are modified.
You should therefore drive in off-road level 3
with particular caution as it could otherwise
lead to an accident and/or serious injury to
you or others.
If you are driving too fast in off-road level 3,
the Reduce speed to under 12 mph
( 20 Km/h ) message appears in the
multifunction display. You also hear a
warning. The vehicle is lowered.
i You cannot clear these messages.
Only select an off-road level when this is
appropriate for road conditions. Otherwise,
fuel consumption increases and handling may
be affected.
Your selection remains stored even if you
remove the key from the ignition lock.
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Vehicle equipment
i This manual describes all the standard
and optional equipment of your vehicle
which was available at the time of
purchase. Country-specific differences are
possible. Bear in mind that your vehicle
may not feature all functions described
here. This also refers to safety-related
systems and functions.
Important safety notes
You will find an illustration of the instrument
cluster in the "At a glance" section
( Y page 28).
GWarning
A driver's attention to the road and traffic
conditions must always be his/her primary
focus when driving.
For your safety and the safety of others,
selecting features through the multifunction
steering wheel should only be done by the
driver when traffic and road conditions permit
it to be done safely.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h ), your vehicle is
covering a distance of 44 feet (approximately
14 m) every second.
GWarning!
No messages will be displayed if either the
instrument cluster or the multifunction
display is inoperative.
As a result, you will not be able to see
information about your driving conditions,
such as
R speed
R outside temperature
R warning/indicator lamps
R malfunction/warning messages
R failure of any systems
Driving characteristics may be impaired.
If you must continue to drive, do so with added
caution. Contact an authorized Mercedes-
Benz Center as soon as possible.GWarning
Malfunction and warning messages are only
indicated for certain systems and are
intentionally not very detailed. The
malfunction and warning messages are
simply a reminder with respect to the
operation of certain systems. They do not
replace the owner's and/or driver's
responsibility to maintain the vehicle's
operating safety. Have all required
maintenance and safety checks performed on
the vehicle. Bring the vehicle to an authorized
Mercedes-Benz Center to address the
malfunction and warning messages.
Displays and operation
Tachometer
The red band in the tachometer indicates the
engine's overrevving range.
! Do not drive in the overrevving range, as
this could damage the engine.
The fuel supply is interrupted to protect the
engine when the red band is reached.
Outside temperature display
The outside temperature display is in the
multifunction display.
GWarning!
The outside temperature indicator is not
designed to serve as an ice-warning device
and is therefore unsuitable for that purpose.
Indicated temperatures just above the
freezing point do not guarantee that the road
surface is free of ice. The road may still be icy,
especially in wooded areas or on bridges.
Changes in the outside temperature are
displayed after a short delay.
214Displays and operationOn-board computer and displays
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Display messagesPossible causes/consequences and M SolutionsCThere is only a small amount of fuel in the fuel tank.XRefuel at the nearest gas station.8
Reserve FuelThe fuel level has fallen below the reserve range.
The fuel tank must be filled up to at least the reserve fuel level;
otherwise, engine running may be impaired.XRefuel at the nearest gas station.8
Gas Cap OpenThe fuel system pressure is too low. The fuel filler cap is not closed
correctly or the fuel system is leaking.XCheck that the fuel filler cap is correctly closed.XIf the fuel filler cap is not correctly closed: close the fuel filler
cap.XIf the fuel filler cap is closed: visit a qualified specialist
workshop.8
Ultra Low-sulfur
Diesel Fuel OnlyVehicles with a diesel engine: the fuel level has fallen below the
reserve range.XCheck that the fuel filler cap is correctly closed.XRefuel at the nearest gas station.XOnly use commercially available vehicular ULTRA-LOW SULFUR
DIESEL FUEL (ULSD, 15 ppm SULFUR MAXIMUM).¸
Replace air filterVehicles with a diesel engine: the engine air filter is contaminated
and must be replaced. XVisit a qualified specialist workshop.·
Clean Fuel FilterVehicles with a diesel engine: there is water in the fuel filter. The
water must be drained off. XVisit a qualified specialist workshop.Ø
Check Additive See
Operator's ManualThe AdBlue ®
tank is empty.XHave the AdBlue ®
tank filled as soon as possible at a qualified
specialist workshop ( Y page 163).
Visit a qualified specialist workshop.Ø
Remaining Starts:
20The AdBlue ®
level has fallen to a minimum.XHave the AdBlue ®
tank filled as soon as possible at a qualified
specialist workshop ( Y page 163).
Visit a qualified specialist workshop.Display messages243On-board computer and displaysBA 164.8 USA, CA Edition B 2011; 1; 2, en-USd2sboikeVersion: 3.0.3.52010-04-21T15:08:44+02:00 - Seite 243Z