Contact an authorized Mercedes-Benz Center
should you require an explanation of
information contained in this manual.
General information
R Only install an approved trailer coupling on
your vehicle.
Further information on availability and on
installation is available from any authorized
Mercedes-Benz Center.
R The bumpers of your vehicle are not
suitable for installing detachable trailer
couplings.
R Do not install hired trailer couplings or
other detachable trailer couplings on the
bumpers of your vehicle.
R To reduce the risk of damage to the ball
coupling, remove it from the ball coupling
recess when not in use.
Coupling up a trailer
Observe the maximum permissible trailer
dimensions (width and length).
Most federal states and all Canadian
provinces require by law:
R safety chains between the towing vehicle
and the trailer. The chains should be cross-
wound under the trailer drawbar. They must
be fastened to the vehicle's trailer
coupling, not to the bumper or the axle.
Allow for enough play in the chains to
facilitate turning tight corners.
R a separate brake system for certain types
of trailer.
R a safety switch for braked trailers. Check
the specific legal requirements applicable
to your federal state.
If the trailer detaches from the towing
vehicle, the safety switch applies the
trailer's brakes.
! Do not connect the trailer's brake system
(if featured) to the hydraulic brake system
of the towing vehicle, as the latter is
equipped with an anti-lock brake system.
Doing so will result in a loss of function of
the brake systems of both the vehicle and
the trailer.
i The vehicle's wiring harness features a
line to the brake indicator lamp.XMake sure that the automatic transmission
is set to position P.XApply the vehicle's parking brake.XClose all doors and the tailgate.XCouple up the trailer.XEstablish all electrical connections.
Towing a trailer
There are numerous legal requirements
concerning the towing of a trailer, e.g. speed
restrictions. Make sure that your vehicle/
trailer combination complies with the local
requirements not only in your area of
residence but also at any location to which
you are traveling. The police and local
authorities can provide reliable information.
Please observe the following when towing a
trailer:
R To acquaint yourself with driving with a
trailer and with the resulting changes to
handling, you should practice cornering,
stopping and reversing in a traffic-free
location.
R Before driving, check:
- the trailer coupling
- the safety switch for braked trailers
- the safety chains
- the electrical connections
- the lights
- the wheels
R Adjust the exterior mirrors to provide an
unobstructed view of the rear section of the
trailer.
R If the trailer features electronically
controlled brakes, pull away the vehicle/
trailer combination carefully, manually
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car tires must meet under Federal Motor
Vehicle Safety Standard No. 109. Grades B
and A represent higher levels of performance
on the laboratory test wheel than the
minimum required by law.
Interchanging the wheels
GWarning
Rotate front and rear wheels only if the tires
are of the same dimension.
If your vehicle is equipped with mixed-size
tires (different tire dimensions front vs. rear),
tire rotation is not possible.
GWarning!
Have the tightening torque checked after
changing a wheel. The wheels could come
loose if they are not tightened to a torque of
110 lb-ft (150 Nm).
Only use genuine Mercedes-Benz wheel bolts
specified for your vehicle’s rims.
The wear patterns on the front and rear tires
differ, depending on the operating conditions.
Rotate the wheels before a clear wear pattern
has formed on the tires. Front tires typically
wear more on the shoulders and the rear tires
in the center.
If your vehicle's tire configuration allows, you
can rotate the wheels according to the
intervals in the tire manufacturer's warranty
book in your vehicle documents. If no
warranty book is available, the tires should be
rotated every 3000 to 6000 miles
(5000 to 10000 km), or earlier if tire wear
requires. Do not change the direction of
wheel rotation.
Clean the contact surfaces of the wheel and
the brake disc thoroughly every time a wheel
is rotated. Check the tire pressures.
Information on changing a wheel and
mounting the spare wheel ( Y page 247).
Tire labeling
Overview of tire labeling
The following markings are on the tire in
addition to the tire name (sales designation)
and the manufacturer's name:
:Uniform Tire Quality Grading Standard
( Y page 284);DOT, Tire Identification Number
( Y page 283)=Maximum tire load ( Y page 278)?Maximum tire pressure ( Y page 274)AManufacturerBTire material ( Y page 284)CTire size designation, load-bearing
capacity and speed index ( Y page 281)DLoad index ( Y page 283)ETire name
i
Tire data is vehicle-specific and may
deviate from the data in the example.
280Tire labelingTires and wheels
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Tires of the same dimensions
i BA: both axlesModelGLK 350 34
GLK 350 4MATICR17BAAlloy wheels
Offset7.5 J x 17 H2
1.87 in (47.5 mm)Winter tires 35235/60 R17 102 H M+S
iR19BAAlloy wheels
Offset7.5 J x 19 H2
1.85 in (47 mm)All-weather tires235/50 R19 99 H M+SR20BAAlloy wheels
Offset8.5 J x 20 H2
1.77 in (45 mm)All-weather tires235/45 R20 100 H XL M+S
Spare wheel
i Please note that the tire pressure of the spare wheel differs from the tire pressure of the
other wheels.
i The specified tire pressure is printed in yellow on the emergency spare wheel.
Collapsible emergency spare wheel 36All modelsR17Alloy wheels
Offset6 B x 17 H2
0.98 in (25 mm) Tires185/75-17 98 PTire pressure280 kPa (2.8 bar/41 psi)34 USA only.
35 Not available as standard or optional equipment from the factory.
36 Use of snow chains not permitted.Wheel/tire combinations289Tires and wheelsBA 204.9 USA, CA Edition A 2011; 1; 6, en-USd2mwentsVersion: 3.0.3.62010-06-15T08:58:39+02:00 - Seite 289Z
overheating. In the Service Booklet, you can
find information on the intervals for renewal.
The renewal interval is determined by the
coolant type and the cooling system design.
The renewal interval in the Service Booklet is
only valid if the coolant is added or renewed
with Mercedes-Benz approved products.
Therefore, only use MB 326.0 antifreeze/
corrosion inhibitor or another Mercedes-Benz
approved product of the same specification.
Information on other Mercedes-Benz
approved products of the same specification
can be obtained at any authorized Mercedes-
Benz Center or on the Internet at
http://bevo.mercedes-benz.com .
The coolant is checked at every service date
at an authorized Mercedes-Benz Center.
The antifreeze/corrosion inhibitor
concentration in the cooling system should:
R be at least 50%. This will protect the cooling
system against freezing down to around
-35 ‡ (-37 †).
R not exceed 55% (antifreeze protection
down to -49 ‡ (-45 †); otherwise, heat will
not be dissipated as effectively.
If the coolant level is too low, MB 326.0
antifreeze/corrosion inhibitor should be
added. Have the cooling system checked for
leaks.
Windshield and headlamp cleaning
system
GWarning
Washer solvent/antifreeze is highly
flammable. Do not spill washer solvent/
antifreeze on hot engine parts, because it may
ignite and burn. You could be seriously
burned.
XUse MB Windshield Washer Concentrate
MB SummerFit.XAt temperatures above freezing: add 1
part MB SummerFit to 100 parts water, e.g.
1.34 fl oz (40 ml) MB SummerFit to 1 gal
(4.0 l) of water.XAt temperatures below freezing: add 1
part MB SummerFit to 100 parts washer
fluid, e.g. 1.34 fl oz (40 ml) MB SummerFit
to 1 gal (4.0 l) of water.
Vehicle data
Vehicle data, GLK 350
The data quoted here refers specifically to a
vehicle with standard equipment. Contact an
authorized Mercedes-Benz Center for the
data for all vehicle variants and trim levels.
i This vehicle is only available in the USA.
Vehicle dimensions, GLK 350Vehicle length178.3 in (4528 mm)179.4 in
(4556 mm) 39Vehicle width
including exterior
mirrors79.4 in (2016 mm)Vehicle height66.5 in (1688 mm)66.4 in (1686 mm) 39Wheel base108.5 in (2755 mm)Front track61.7 in (1568 mm)Rear track62.5 in (1589 mm)Ground clearance8.2 in (208 mm)40Turning circle37.7 ft (11.5 m)39
Vehicles with the AMG Sports package.
40 When the vehicle is loaded and ready to drive: fuel tank full, all fluids filled, with driver.Vehicle data299Technical dataBA 204.9 USA, CA Edition A 2011; 1; 6, en-USd2mwentsVersion: 3.0.3.62010-06-15T08:58:39+02:00 - Seite 299Z
Vehicle weight, GLK 350Maximum roof
loadMaximum 165 lb
(75 kg)
Vehicle data, GLK 350 4MATIC
The data quoted here refers specifically to a
vehicle with standard equipment. Contact an
authorized Mercedes-Benz Center for the
data for all vehicle variants and trim levels.
Vehicle dimensions, GLK 350 4MATICVehicle length178.3 in (4528 mm)179.4 in
(4556 mm) 41Vehicle width
including exterior
mirrors79.4 in (2016 mm)Vehicle height66.5 in (1688 mm)66.4 in (1686 mm) 41Wheel base108.5 in (2755 mm)Front track61.7 in (1568 mm)Rear track62.5 in (1589 mm)Ground clearance8.2 in (208 mm)42Turning circle37.7 ft (11.5 m)Vehicle weight, GLK 350 4MATICMaximum roof
loadMaximum 165 lb
(75 kg)41 Vehicles with the AMG Sports package.
42 When the vehicle is loaded and ready to drive: fuel tank full, all fluids filled, with driver.300Vehicle dataTechnical data
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