2010 MERCEDES-BENZ GL cooling

Canada only: Display J (Y page 183) is
cleared.XReactivating: Press button Ã.
i
You can also press button ^ on the
climate control panel.
If you press button ¦ to reactivate the
climate control system, the defrosting
mode is activated.
Deactivating the rear climate control
from the front
USA only
XDeactivating: Press button ±.
The indicator lamp in the button comes on.XReactivating: Press button ±.
The indicator lamp in the button goes out.
Canada only
XDeactivating: Press button X.
The indicator lamp in the button comes on.
In display J ( Y page 183), you will see the
Y symbol followed by MODE for
approximately 3 seconds.XWithin these 3 seconds press button
^ .
In display J, you will see the Y symbol
followed by OFF.
The rear climate control is switched off.XReactivating: Press button X.
The indicator lamp in the button comes on.
In display J, you will see the Y symbol
followed by ON and MODE . The MODE display
is cleared and the indicator lamp in button
X goes out after approximately
3 seconds.
The rear climate control switches on.Deactivating the rear climate control
from the rearXDeactivating: Press button ^.
The indicator lamp in the button comes on.XReactivating: Press button Ã.
The indicator lamp in the button comes on.
Air conditioning
The air conditioning is operational while the
engine is running and cools the interior air to
the temperature set by the operator. In
addition, the air conditioning dehumidifies
the interior air and helps prevent window
fogging.
GWarning!
If you switch off the air conditioning, the
vehicle will not be cooled when weather
conditions are warm. The windows can fog up
more quickly. Window fogging may impair
visibility and endanger you and others.
i Condensation may drip out from
underneath the vehicle. This is normal and
not an indication of a malfunction.
Deactivating
It is possible to deactivate the cooling
function of the climate control system. The
interior air will then no longer be cooled or
dehumidified.
XPress button Á.
The indicator lamp in the button goes out.
The cooling function switches off after a
short delay.
Activating
Moist air can fog up the windows. You can
dehumidify the interior air with the air
conditioning.
XPress button Á again.
The indicator lamp in the button comes on.1863-zone automatic climate controlControls in detail
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The air conditioning uses the refrigerant
R134a. This refrigerant is free of CFCs which
are harmful to the ozone layer.
! If the air conditioning cannot be activated
again, this indicates that the air
conditioning is losing refrigerant. The
compressor has turned off.
Have the air conditioning checked at the
nearest authorized Mercedes-Benz Center.
Automatic mode
You can switch the climate control system on
and off for each zone of the passenger
compartment as desired.
When operating the climate control system in
automatic mode, the interior air temperature,
air volume and air distribution are adjusted
automatically.
In automatic mode, cooling with
dehumidification is switched on. This function
can be switched off if necessary.
GWarning!
If you switch off the air conditioning, the
vehicle will not be cooled when weather
conditions are warm. The windows can fog up
more quickly. Window fogging may impair
visibility and endanger you and others.
XSet the desired temperature
( Y page 187).XActivating: Press button Ã.
The indicator lamp in the button comes on.
i The settings for the passenger side are
also used for the rear passenger
compartment.
XDeactivating: Press button I or K .
The indicator lamp in button à goes out.
The automatic air volume is switched off
and is controlled according to the desiredsetting. The automatic air distribution
remains switched on.
or
XPress an air distribution button Z14
,
M 14
, \ 14
, P , ¯ 15
, c 14
or
O .
The indicator lamp in button à goes out.
The automatic air distribution is switched
off and is controlled according to the
desired position. The automatic air volume
remains switched on.
Automatic mode with rear climate
control panel
XActivating: Press button Ã.
The indicator lamp in the button comes on.
The temperature, air volume and air
distribution are adjusted automatically.XDeactivating: Press button I or K .
The automatic air volume is switched off
and is controlled according to the desired
setting. The automatic air distribution
remains switched on.
or
XPress button M or P .
The automatic air distribution is switched
off and is controlled according to the
desired position. The automatic air volume
remains switched on.
Setting the temperature
You can set the air temperature for each of
the 3 zones separately.You should raise or
lower the temperature setting in small
increments, preferably starting at 72‡
(22†).
14 Canada only
15 USA only3-zone automatic climate control187Controls in detailX164_AKB; 5; 31, en-USd2ureepe,Version: 2.11.8.12009-09-11T12:30:16+02:00 - Seite 187Z

For more information on engine oil, see
“Fuels, coolants, lubricants etc.”
(Y page 368).
For information on messages in the
multifunction display concerning engine oil,
see the “Practical hints” section
(Y page 308).
Adding engine oil
! Only use approved engine oils and oil
filters required for vehicles with
Maintenance System. For a listing of
approved engine oils and oil filters, contact
an authorized Mercedes-Benz Center or
visit www.mbusa.com (USA only).
The following will result in engine or
emission control system damage not
covered by the Mercedes-Benz Limited
Warranty:
RUsing engine oils and oil filters of
specification other than those expressly
required for the Maintenance System.
RChanging of oil and oil filter at change
intervals longer than those called for by
the Maintenance System.
RUsing any oil additives.
Example illustration: GL 450 (GL 350 BlueTEC,GL 550 similar)
XUnscrew filler cap : from filler neck.XAdd engine oil as required. Be careful not
to overfill with oil.
Be careful not to spill any oil when adding.
Avoid environmental damage caused by oil
entering the ground or water.
! Excess oil must be siphoned or drained
off. It could cause damage to the engine
and emission control system not covered
by the Mercedes-Benz Limited Warranty.
XScrew filler cap : back on filler neck.
For more information on engine oil, see the
“Technical data” section (Y page 368) and
(Y page 370).
Transmission fluid level
The transmission fluid level does not need to
be checked. If you notice transmission fluid
loss or gearshifting malfunctions, have an
authorized Mercedes-Benz Center check the
transmission.
Coolant level
The engine coolant is a mixture of water and
anticorrosion/antifreeze.
When checking the coolant level, the vehicle
must be parked on level ground, and the
coolant temperature must be below 158‡
(70†).
GWarning!
In order to avoid any potentially serious burns:
RUse extreme caution when opening the
hood if there are any signs of steam or
coolant leaking from the cooling system, or
if the coolant temperature display indicates
that the coolant is overheated.
RDo not remove the cap on the coolant
expansion tank if the coolant temperature
is above 158‡ (70†). Allow the engine to
cool down before removing the cap. The
coolant expansion tank contains hot fluid
and is under pressure.
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Display messagesPossible causes/consequences and M SolutionsÁCompressor
Cooling
DownYou have selected a higher vehicle level. Due to frequent level
changes within a short period, the compressor must cool
down first.
! When the message Compressor Cooling Down appears
in the multifunction display, driving is still possible. Keep in
mind that the ride height of the vehicle is not yet reached,
so you can damage the underbody of the vehicle.XLet the compressor cool down until the message
disappears.
The selected level will be set once the compressor has
cooled down.ÁRising
Max. 12
MPHThe vehicle is adjusting to off-road level 3.XDo not drive faster than 12 mph (20 km/h).ÁMax. 12
MPHYou are driving while using off-road level 3. The message
reminds you of the maximum speed at which you may drive
with off-road level 3.XDo not drive faster than 12 mph (20 km/h).ÆBeing
lowered
Max. 12
MPHThe vehicle is being lowered from off-road level 3 to off-road
level 2.XDo not drive faster than 12 mph
(20 km/h) until the off-road level 2 is reached.ÆReduce
speed to
under
12 MPHYou are driving too fast for the set vehicle level.GWarning!
Adapt your driving style to the modified driving conditions.
Avoid extreme, quick steering maneuvers. Please keep in
mind that the driving characteristics of the vehicle have been
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.
XDo not drive faster than 12 mph
(20 km/h) until the off-road level 2 is reached.8Locking
System
Inoperativ
e Service
RequiredThe differential locks are malfunctioning.XDo not drive faster than 50 mph (80 km/h).XHave the vehicle checked at an authorized Mercedes-Benz
Center.302Vehicle status messages in the multifunction displayPractical hints
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EngineDisplay messagesPossible causes/consequences and M Solutions+Top Up
Coolant
See
Operator’s
ManualThe coolant level is too low.XAdd coolant ( Y page 231).XIf you have to add coolant frequently, have the cooling
system checked at an authorized Mercedes-Benz Center.GWarning!
Do not spill antifreeze on hot engine parts. Antifreeze contains ethylene glycol which may burn
if it comes into contact with hot engine parts. You could be seriously burned.
! Do not ignore the low engine coolant level warning. Extended driving with the message
and symbol displayed may cause serious engine damage not covered by the Mercedes-Benz
Limited Warranty.
Do not drive without sufficient amount of coolant in the cooling system. The engine will
overheat causing major engine damage.
Display messagesPossible causes/consequences and M Solutions?Coolant
Stop car,
switch
engine
off.The coolant is too hot.XStop the vehicle immediately as soon as it is safe to do so.XTurn off the engine immediately.XEngage the parking brake.XOnly start the engine again after the message disappears.
You could otherwise damage the engine.XObserve the coolant temperature in the multifunction
display.XIf the temperature rises again: Contact an authorized
Mercedes-Benz Center immediately.
During severe operation conditions and stop-and-go city
traffic, the coolant temperature may rise close to 248‡
(120†).
GWarning!
Driving when your engine is overheated can cause some fluids which may have leaked into the
engine compartment to catch fire. You could be seriously burned.
Steam from an overheated engine can cause serious burns which can occur just by opening the
engine hood. Stay away from the engine if you see or hear steam coming from it.
Stop the vehicle in a safe location away from other traffic. Turn off the engine, get out of the
vehicle and do not stand near the vehicle until the engine has cooled down.
306Vehicle status messages in the multifunction displayPractical hints
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! The engine should not be operated with the coolant temperature above 248‡ (120†).
Doing so may cause serious damage which is not covered by the Mercedes-Benz Limited
Warranty.Display messagesPossible causes/consequences and M Solutions?Coolant
Stop car,
switch
engine
off.The poly-V-belt could be broken.XStop the vehicle immediately as soon as it is safe to do so.XTurn off the engine immediately.XCheck the poly-V-belt.XIf it is broken: Do not continue to drive. Otherwise the
engine will overheat due to an inoperative water pump
which may result in damage to the engine. Contact an
authorized Mercedes-Benz Center.XIf it is intact: Do not continue to drive the vehicle with this
message displayed. Doing so could result in serious engine
damage that is not covered by the Mercedes-Benz Limited
Warranty.XObserve the coolant temperature in the multifunction
display.XDrive to the nearest authorized Mercedes-Benz Center
immediately.?The radiator cooling fan is malfunctioning.XObserve the coolant temperature in the multifunction
display.
If the coolant temperature is below 248‡ (120†), you may
continue driving to an authorized Mercedes-Benz Center.XAvoid placing heavy loads on the engine (e.g. by driving
uphill) as well as stop-and-go traffic.XHave the fan replaced as soon as possible.Vehicle status messages in the multifunction display307Practical hintsX164_AKB; 5; 31, en-USd2ureepe,Version: 2.11.8.12009-09-11T12:30:16+02:00 - Seite 307Z

ModelCapacityFuels, coolants,
lubricants, etc.Engine with oil
filterGL 350 BlueTEC9.0 US qt (8.5 l)Approved engine
oilsGL 450
GL 5509.5 US qt (9.0 l)Automatic
transmissionAll models9.5 US qt (9.0 l)MB Automatic
Transmission FluidFront axleAll models1.2 US qt (1.1 l)Hypoid gear oilRear axleAll models1.2 US qt (1.1 l)Hypoid gear oilRear axle with
differential lockAll models1.7 US qt (1.6 l)Hypoid gear oilTransfer case
single speedAll models0.53 US qt (0.5 l)MB Automatic
Transmission FluidTransfer case
double speedAll models1.6 US qt (1.5 l)MB Automatic
Transmission FluidPower steeringAll modelsapprox. 1.1 US qt (1.0 l)MB Power Steering
Fluid or approved
Dexron III ATFBrake systemAll models0.63 US qt (0.6 l)MB Brake Fluid
(DOT 4+)Cooling systemGL 350 BlueTECapprox. 10.0 US qt (9.5 l)MB 325.0
Anticorrosion/
AntifreezeGL 450
GL 550approx. 12.7 US qt (12.0 l)Fuel tankAll models26.4 US gal (100.0 l)Gasoline engine:
Premium unleaded
gasoline (Minimum
Posted Octane 91
[Avg. of
96 RON/86 MON])
Diesel engine:
ULTRA-LOW
SULFUR HIGHWAY
DIESEL FUEL
(ULSD, 15 ppm
SULFUR MAXIMUM)Fuel tank
reserveAll modelsapprox. 3.4 US gal (13.0 l)AdBlue ®
tankGL 350 BlueTEC8.3 US gal (31.7 l)AdBlue ®
complying
with ISO 22241Fuels, coolants, lubricants, etc.369Technical dataX164_AKB; 5; 31, en-USd2ureepe,Version: 2.11.8.12009-09-11T12:30:16+02:00 - Seite 369Z

vehicles are not covered by the Mercedes-
Benz Limited Warranty or by any pre-owned
or Extended Limited Warranties.
AdBlue ®
AdBlue ®
is a non-flammable, non-toxic,
colorless and odorless, water-soluble liquid.
! Only use AdBlue ®
complying with
ISO 22241. Do not blend with additives.
! Rinse surfaces that have come into
contact with AdBlue ®
, or remove AdBlue ®
with a moist cloth and cold water
immediately. If AdBlue ®
has crystallized
already, use cold water and a sponge.
AdBlue ®
residues will crystallize and soil
the affected surfaces.
High ambient temperatures
If AdBlue ®
in the reservoir heats up to above
122‡ (50†) for a long period of time, for
example due to direct sunlight, ammonia gas
vapors may escape when opening the
AdBlue ®
tank.
GWarning!
When opening the filler cap of the AdBlue ®
tank ammonia gas vapors may escape. Refill
AdBlue ®
in a well ventilated area only.
Ammonia gas vapors have a pungent odor and
are particularly irritating for your skin,
mucous membranes, and eyes. Inhaling
ammonia gas vapors will cause burning eyes,
nose, and throat, as well as coughing and
watering eyes.
Low ambient temperatures
AdBlue ®
freezes at a temperature of
approximately 12‡ (-11†). Your vehicle is
factory equipped with an AdBlue ®
preheating
system. The vehicle can thus be operated at
temperatures below 12‡ (-11†).
Special additives
! Only use AdBlue ®
complying with
ISO 22241. Do not add additives to
AdBlue ®
and do not dilute AdBlue ®
with
water. Otherwise, the BlueTEC exhaust gas
aftertreatment system could be damaged.
Damage caused by using additives or
diluting with water are not covered by the
Mercedes-Benz Limited Warranty.
Purity
The purity of AdBlue ®
is of particular
importance for avoiding malfunctions in the
exhaust gas aftertreatment.
If AdBlue ®
is pumped out of the tank, e.g.
during repair work, the same liquid must not
be used to refill the tank as its purity is no
longer guaranteed.
! Impurities caused for example by other
service products, cleaning agents, and dust
result in increased emissions,
malfunctions, catalyst damage, or engine
damage.
Coolants
The engine coolant is a mixture of water and
anticorrosion/antifreeze, which provides:
R Corrosion protection
R Freeze protection
R Boiling protection (by increasing the boiling
point)
The cooling system was filled at the factory
with a coolant providing freeze protection to
approximately -35‡ (-37†) and corrosion
protection.
! Add premixed coolant solution only.
Adding water and MB 325.0 Anticorrosion/
Antifreeze separately from each other,
could cause engine damage not covered by
the Mercedes-Benz Limited Warranty.
Fuels, coolants, lubricants, etc.373Technical dataX164_AKB; 5; 31, en-USd2ureepe,Version: 2.11.8.12009-09-11T12:30:16+02:00 - Seite 373Z