
remove SmartKey from starter switch and
reinsert.GWarning!
With the engine not running, there is no power
assistance for the brake and steering
systems. In this case, it is important to keep
in mind that a considerably higher degree of
effort is necessary to brake and steer the
vehicle. Adapt your driving accordingly.
XMake sure the ignition is switched on.XWith the vehicle at a standstill, depress the
brake pedal and keep it pressed.XShift the automatic transmission into
neutral position N.XRelease the brake pedal.XIf engaged, release the parking brake.XSwitch on the hazard warning flasher
( Y page 90).
!
The vehicle may be towed only for
distances up to 30 miles (50 km) and at a
speed not to exceed 30 mph (50 km/h).
i While being towed with the hazard
warning flasher in use, use the combination
switch in the usual manner to signal turns.
Only the selected turn signal will operate.
Upon canceling the turn signal, the hazard
warning flasher will operate again.
Towing with one axle raised
! The vehicle may be towed only for
distances up to 30 miles (50 km) and at a
speed not to exceed 30 mph (50 km/h).
! Vehicles with 4MATIC: Do not tow with
one axle raised. Doing so could damage the
transfer case, which is not covered by the
Mercedes-Benz Limited Warranty.
All wheels must be on or off the ground.
Observe instructions for towing the vehicle
with all wheels on the ground.
When towing the vehicle with one axle raised,
the wheels on the ground have to move freely.
Therefore follow the respective steps below,
after the front or the rear axle being raised:
Towing with the front axle raisedXMake sure the ignition is switched on.XWith the vehicle at a standstill, depress the
brake pedal and keep it pressed.XShift the automatic transmission into
neutral position N.XRelease the brake pedal.XIf engaged, release the parking brake.XSwitch off the automatic central locking
( Y page 124).XSwitch off the ignition and leave the
SmartKey in the starter switch.XSwitch on the hazard warning flasher
( Y page 90).
!
Because the ESP ®
operates
automatically, the engine and ignition must
be shut off (SmartKey in starter switch
position 0 or 1) when the vehicle is being
towed with one axle raised.
Active braking action through the ESP ®
may otherwise seriously damage the brake
system which is not covered by the
Mercedes-Benz Limited Warranty.
Towing with the rear axle raised
XSwitch off the ignition and remove the
SmartKey from the starter switch.XSwitch on the hazard warning flasher
( Y page 90).XTake the SmartKey with you when leaving
the vehicle.
Stranded vehicle
Freeing a stranded vehicle, on which the
wheels are dug into sand or mud, should be
done with the greatest of care, especially if
the vehicle is heavily loaded.
324Towing the vehiclePractical hints
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moisture or dirt could enter the fuse box
and possibly impair fuse operation.
Fuse box in engine compartment
XOpen the hood.XWith a dry cloth, remove any moisture from
fuse box cover.
XOpening: Release wire ; from fuse box
cover.
XRelease clamps :.XRemove fuse box cover.XClosing: Make sure the sealing rubber is
positioned properly.
XPress fuse box cover down and secure with
clamps :.
XFasten wire ; on fuse box cover.
! The fuse box cover must be properly
positioned as described. Otherwise,
moisture or dirt could enter the fuse box
and possibly impair fuse operation.
XClose the hood after checking or replacing
fuses.Fuse box in cargo compartmentXOpening: Open the cargo compartment.XLift the cargo compartment floor ;
(Y page 260).
XRemove the storage space :.XFold down cover =.XClosing: Install everything in reverse order.326FusesPractical hints
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Vehicle specification GLK 350
(204.956)
The quoted data apply only to the standard
vehicle. Contact an authorized Mercedes-
Benz Center for the corresponding data of all
special bodies and special equipment.
i The GLK 350 is available in the USA only.Engine GLK 350Engine, type272Mode of operation4-stroke engine,
gasoline injectionNo. of cylinders6Bore3.66 in (92.90 mm)Stroke3.39 in (86.00 mm)Total piston
displacement213.5 cu in
(3 498 cm 3
)Compression
ratio10.7:1Output acc. to
SAE J 1349 14268 hp/6
000 rpm
(200 kW/6 000 rpm)Maximum torque
acc. to SAE J 1349258 lb-ft/
2 400 - 5 000 rpm
(350 Nm/
2 400 - 5 000 rpm)Maximum engine
speed6 500 rpmFiring order1-4-3-6-2-5Poly-V-belt2 404 mmElectrical system GLK 350Alternator14 V/150 AStarter motor12 V/1.4 kWElectrical system GLK 350Battery12 V/70 AhSpark plugs, typeBosch J 7 MPP33Spark plugs,
electrode gap0.031 in (0.8 mm)Spark plugs,
tightening torque15 - 18 lb-ft
(20 - 25 Nm)Main dimensions GLK 350Overall vehicle
length178.3 in (4 528 mm)179.4 in
(4 556 mm) 15Overall vehicle
width 1679.4 in (2
016 mm)Overall vehicle
height66.9 in (1 698 mm)66.4 in (1 686 mm) 15Wheelbase108.5 in (2
755 mm)Track, front61.7 in (1 568 mm)Track, rear62.5 in (1 589 mm)Ground clearance7.9 in (201 mm) 17Turning circle37.7 ft (11.5 m)Weights GLK 350Roof loadmax. 165 lb (75 kg)
Vehicle specification GLK 350
4MATIC (204.987)
The quoted data apply only to the standard
vehicle. Contact an authorized Mercedes-
14 Premium fuel required. Performance may vary with fuel octane rating.
15 Vehicles with AMG Sport Package.
16 Exterior rear view mirrors folded out.
17 Operational vehicle (vehicle with driver, all liquids, and full fuel tank).330Vehicle specification GLK 350 4MATIC (204.987)Technical data
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Benz Center for the corresponding data of all
special bodies and special equipment.Engine GLK 350 4MATICEngine, type272Mode of operation4-stroke engine,
gasoline injectionNo. of cylinders6Bore3.66 in (92.90 mm)Stroke3.39 in (86.00 mm)Total piston
displacement213.5 cu in
(3 498 cm 3
)Compression
ratio10.7:1Output acc. to
SAE J 1349 18268 hp/6
000 rpm
(200 kW/6 000 rpm)Maximum torque
acc. to SAE J 1349258 lb-ft/
2 400 - 5 000 rpm
(350 Nm/
2 400 - 5 000 rpm)Maximum engine
speed6 500 rpmFiring order1-4-3-6-2-5Poly-V-belt2 404 mmElectrical system GLK 350 4MATICAlternator14 V/150 AStarter motor12 V/1.4 kWBattery12 V/70 AhSpark plugs, typeBosch J 7 MPP33Electrical system GLK 350 4MATICSpark plugs,
electrode gap0.031 in (0.8 mm)Spark plugs,
tightening torque15 - 18 lb-ft
(20 - 25 Nm)Main dimensions GLK 350 4MATICOverall vehicle
length178.3 in (4 528 mm)179.4 in
(4 556 mm) 19Overall vehicle
width 2079.4 in (2
016 mm)Overall vehicle
height66.9 in (1 698 mm)66.4 in (1 686 mm) 19Wheelbase108.5 in (2
755 mm)Track, front61.7 in (1 568 mm)Track, rear62.5 in (1 589 mm)Ground clearance7.9 in (201 mm) 21Turning circle37.7 ft (11.5 m)Weights GLK 350 4MATICRoof loadmax. 165 lb (75 kg)
Rims and tires
Notes
! Only use tires which have been tested and
approved by Mercedes-Benz. Tires
approved by Mercedes-Benz are developed
to provide best possible performance in
conjunction with the driving safety systems
on your vehicle such as the ABS or the
18 Premium fuel required. Performance may vary with fuel octane rating.
19 Vehicles with AMG Sport Package.
20 Exterior rear view mirrors folded out.
21 Operational vehicle (vehicle with driver, all liquids, and full fuel tank).Rims and tires331Technical dataX204_AKB; 3; 23, en-USd2ureepe,Version: 2.11.8.12009-07-16T19:16:58+02:00 - Seite 331Z

ESP®
. Tires specially developed for your
vehicle and tested and approved by
Mercedes-Benz can be identified by finding
the following on the tire’s sidewall:
R MO =
Mercedes-Benz Original
equipment tires
Using tires other than those approved by
Mercedes-Benz may result in damage that
is not covered by the Mercedes-Benz
Limited Warranty.
! Using tires other than those approved by
Mercedes-Benz can have detrimental
effects, such as
R poor handling characteristics
R increased noise
R increased fuel consumption
Moreover, tires and rims not approved by
Mercedes-Benz may, under load, exhibit
dimensional variations and different tire
deformation characteristics that could
cause them to come into contact with the
vehicle body or axle parts. Damage to the
tires or the vehicle may be the result.
i Further information on tires and rims is
available at any authorized Mercedes-Benz
Center. The Tire and Loading Information
placard with the recommended tire
inflation pressures for cold tires is located
on the driver’s door B-pillar. Supplemental
tire inflation pressure information for
driving at high speeds or for vehicle loads
less than the maximum loaded vehicle
condition can be found on the tire inflation
pressure label. The tire inflation pressure
label is located on the inside of the fuel filler
flap. The tire inflation pressure should be
checked regularly and should only be
adjusted on cold tires. Follow tire
manufacturer’s maintenance
recommendation included with the vehicle.
For information on recommended tire
inflation pressure and supplemental tire
inflation pressure information for special
driving situations, see ( Y page 219).
i Please keep in mind that the vehicle must
be equipped
R with wheels of identical dimensions on
each axle (left and right)
R with tires of identical characteristics all
around, i.e. summer tires, winter tires, or
all-season tires etc.
i The following pages also list the approved
rim and tire sizes for equipping your vehicle
with winter tires. Winter tires are not
available as standard or optional factory
equipment, but can be purchased from an
authorized Mercedes-Benz Center.
Equipping your vehicle with winter tires
approved for your vehicle model may
require the purchase of rims of the
recommended size for use with these
winter tires. This depends on vehicle model
and the standard or optional factory-
equipped wheel rim/tire configuration on
your vehicle. For more information contact
an authorized Mercedes-Benz Center.332Rims and tiresTechnical data
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Fuels, coolants, lubricants, etc.
Capacities
Vehicle components and their respective
lubricants must match. Therefore only use
products tested and approved by Mercedes-
Benz.
For information on tested and approved
products, contact an authorized Mercedes-
Benz Center or visit www.mbusa.com (USA
only).
GWarning!
Comply with all valid regulations with respect
to handling, storing, and disposing of service
fluids. Otherwise you could endanger persons
or the environment.
Keep service fluids out of the reach of
children.
For health reasons, you should prevent
service fluids from coming into direct contact
with your skin or clothing.
If a service fluid is swallowed, contact a
physician immediately.ModelCapacityFuels, coolants,
lubricants, etc.Engine with oil
filterAll models8.5 US qt (8.0 l)Approved engine
oilsAutomatic
transmissionGLK 350 269.5 US qt (9.0 l)MB Automatic
Transmission FluidGLK 350 4MATIC9.5 US qt (9.0 l)Front axleGLK 350 4MATIC0.63 US qt (0.6 l)Hypoid gear oil
(SAE 75W-85)Rear axleGLK 350 261.2 US qt (1.1 l)Hypoid gear oil
(SAE 75W-85)GLK 350 4MATIC1.1 US qt (1.0 l)Transfer caseGLK 350 4MATIC0.63 US qt (0.6 l)MB Automatic
Transmission FluidPower steeringAll modelsapprox. 1.1 US qt (1.0 l)MB Power Steering
Fluid (Pentosin
CHF 11.S)Brake systemAll models0.53 US qt (0.5 l)MB Brake Fluid
(DOT 4+)Cooling systemAll modelsapprox. 8.9 US qt (8.4 l)MB 325.0
Anticorrosion/
Antifreeze26 USA only.334Fuels, coolants, lubricants, etc.Technical data
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is fully loaded or operating in
mountainous terrain.
Fuel requirements
Only use premium unleaded gasoline. The
octane number (posted at the pump) must be
91 min. It is an average of both the Research
Octane Number (RON) and the Motor Octane
Number (MON): (RON+MON)/2. This is also
known as the ANTI-KNOCK INDEX.
Reformulated gasolines (RFG) and/or
unleaded gasoline containing oxygenates
such as ethanol, TAME, ETBE, IPA, IBA, and
TBA can be used provided the ratio of any one
of these oxygenates to gasoline does not
exceed 10%; MTBE must not exceed 15%.
The ratio of methanol to gasoline must not
exceed 3% plus additional cosolvents.
Using mixtures of ethanol and methanol is not
allowed. Gasohol, which contains 10%
ethanol and 90% unleaded gasoline, can be
used.
These blends must also meet all other fuel
requirements, such as resistance to spark
knock, boiling range, vapor pressure, etc.
Gasoline additives
A major concern among engine
manufacturers is carbon build-up caused by
gasoline. Mercedes-Benz recommends only
the use of quality gasoline containing
additives that prevent the build-up of carbon
deposits.
After an extended period of using fuels
without such additives carbon deposits can
build up, especially on the intake valves and
in the combustion area, leading to engine
performance problems such as:
R Warm-up hesitation
R Unstable idle
R Knocking/pinging
RMisfire
R Power loss
In areas where carbon deposits may be
encountered due to lack of availability of
gasoline which contains these additives, the
use of Mercedes-Benz approved additives is
recommended.
Contact an authorized Mercedes-Benz Center
or visit www.mbusa.com (USA only) for a
listing of approved products. Follow
directions on the product label.
Do not blend other fuel additives with fuel.
This only results in unnecessary cost and may
be harmful to the engine operation.
! Damage or malfunction resulting from
poor fuel quality or from blending additional
fuel additives other than those tested and
approved by us for use on Mercedes-Benz
vehicles are not covered by the Mercedes-
Benz Limited Warranty or by any pre-owned
or Extended Limited Warranties.
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.
If the antifreeze mixture is effective to -35‡
(-37† ), the boiling point of the coolant in the
pressurized cooling system is reached at
approximately 266‡ (130†).
Fuels, coolants, lubricants, etc.337Technical dataX204_AKB; 3; 23, en-USd2ureepe,Version: 2.11.8.12009-07-16T19:16:58+02:00 - Seite 337Z