
sucked into the fuel system. If this happens,
the malfunction indicator lamp  = (USA
only) or  ; (Canada only) comes on and the
engine may not start immediately after
refueling the vehicle.
After refueling:XMake sure the automatic transmission is in
park position  P.
The transmission position indicator in the
multifunction display should be on  P.XDo not depress the accelerator.XIf necessary, remove the KEYLESS-GO
start/stop button from the starter switch.XTurn the SmartKey in the starter switch to
position  2 for at least 10 seconds.XReturn the SmartKey in the starter switch
to position  0.XTurn the SmartKey in the starter switch to
position  3 and hold it there for a maximum
of 10 seconds or until the engine runs
surge-free.
If the engine does not start:
XTurn the SmartKey in the starter switch
once more to position  2 for at least
10 seconds.XReturn the SmartKey in the starter switch
to position  0.XTurn the SmartKey in the starter switch
once more to position  3 and hold it there
for a maximum of 10 seconds or until the
engine runs surge-free.XIf necessary, repeat the above steps.
If the engine still does not start after
3 attempts:
Do not make any further attempts to start the
engine. Contact an authorized Mercedes-
Benz Center or call Roadside Assistance
( Y  page 216).
i When the malfunction indicator lamp
=  (USA only) or  ; (Canada only) in
the instrument cluster has been illuminated
for the above condition, it will remain
illuminated until the engine was cycled on
and off four times in a row.
AdBlue ®
 (diesel engine only)
The BlueTEC exhaust gas aftertreatment
system requires a reducing agent (AdBlue ®
)
in order to function properly. Refilling with
AdBlue ®
 is part of the regular maintenance
service work. A tankful of AdBlue ®
 should
suffice until the next maintenance service
under normal driving conditions.
When the AdBlue ®
 tank is low, the message
Check Additive See Operator’s 
Manual  appears in the multifunction display.
When the AdBlue ®
 level drops to the
minimum level, the message  Remaining 
Starts: 20  appears in the multifunction
display.
i When the message  Remaining Starts: 
20  appears in the multifunction display, you
can start the engine 20 more times. If you
do not add AdBlue ®
, the engine cannot be
started beyond that point. Fill the
AdBlue ®
 tank with approximately 1 gal
(3.79 l) AdBlue ®
 (corresponds to
approximately 2 AdBlue ®
 refill containers)
or have the AdBlue ®
 tank filled by an
authorized Mercedes-Benz Center.
i For refilling outside the maintenance
service intervals, refill the AdBlue ®
 tank
with approximately 1 gal (3.79 l) AdBlue ®
(corresponds to approximately 2 AdBlue ®
refill containers).
Always use the particular AdBlue ®
 refill
containers for refilling outside the
maintenance service interval. Contact an
authorized Mercedes-Benz Center or call
Roadside Assistance if necessary
( Y  page 216).
Additional information on BlueTEC exhaust
gas aftertreatment and AdBlue ®
 is available
at any authorized Mercedes-Benz Center.346AdBlue ®
 (diesel engine only)Practical hints
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Refilling with AdBlue® GWarning!
Make sure
RAdBlue® does not come into contact with
skin, eyes, or clothing
Rto keep AdBlue® out of the reach of children
If you and/or others have come into contact
with AdBlue®:
RIf AdBlue® has gotten into contact with
eyes, flush with plenty of water immediately
and seek medical help.
RClean affected skin immediately with plenty
of water.
RIf AdBlue® was swallowed, rinse mouth
immediately with plenty of water and drink
plenty of water. Consult a physician.
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.
! 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.
! 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.
! AdBlue® is not a fuel additive and must
not be added to the diesel fuel tank. If
AdBlue® reaches the diesel fuel tank, the
engine could be damaged which is not
covered by the Mercedes-Benz Limited
Warranty.
For more information on AdBlue®, see
(Y page 373).
The AdBlue® filler neck is located under the
cargo compartment floor.
XSwitch off the ignition.XOpen the tailgate (Y page 75).XLift the cargo compartment floor
(Y page 284).
XTurn AdBlue® filler cap cover :
counterclockwise and remove it.
XTurn AdBlue® filler cap ;
counterclockwise and open it.
Filler cap ; is tethered with a plastic strap.
AdBlue® (diesel engine only)347Practical hintsX164_AKB; 5; 31, en-USd2ureepe,Version: 2.11.8.12009-09-11T12:30:16+02:00 - Seite 347Z     

XPull dust cap off of AdBlue® refill container
=.
XPlace AdBlue® refill container = on the
filler neck as illustrated and tighten it
moderately (hand-tight) by turning it
clockwise.
! Make sure to tighten the AdBlue® refill
container only moderately, i.e. hand-tight,
as you could otherwise damage it.
XPush AdBlue® refill container = down.
The AdBlue® tank is filled. This may take up
to 1 minute.
iWhen you stop pushing the AdBlue® refill
container down, the filling process is
stopped and you can remove the refill
container.
XRelease AdBlue® refill container =.XTurn AdBlue® refill container =
counterclockwise and remove it.
XPlace AdBlue® filler cap ; (Y page 347) on
filler neck and turn it clockwise.
XPlace AdBlue® filler cap cover : as
illustrated and turn it clockwise to its stop.
XLower cargo compartment floor.XClose the tailgate.XDrive the vehicle at a speed of at least
10 mph (16 km/h).
The message Check Additive See 
Operator’s Manual disappears after
approximately 1 minute.
iIf the message Check Additive See 
Operator’s Manual still appears in the
multifunction display, refill with one more
container of AdBlue®.
iHave the AdBlue® level checked and, if
necessary, filled completely afterward at
an authorized Mercedes-Benz Center.
Battery
Safety notes
A battery should always be sufficiently
charged in order to achieve its rated service
life. Refer to Maintenance Booklet for battery
maintenance intervals.
If you use your vehicle mostly for short-
distance trips, you will need to have the
battery charge checked more frequently.
When replacing a battery, always use a
battery approved by Mercedes-Benz.
If you do not intend to operate your vehicle
for an extended period of time, contact an
authorized Mercedes-Benz Center about
steps you need to observe.
GWarning!
Observe all safety instructions and
precautions when handling automotive
batteries.
348BatteryPractical hints
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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