2012 MERCEDES-BENZ GLK SUV trailer

X
Release the brake pedal.
X Release the parking brake. Transporting the vehicle
The towing eyes or trailer tow hitch can be
used to pull the vehicle onto a trailer or trans-
porter if you wish to transport it.
X Vehicles with manual transmission:
shift to neutral.
X Vehicles with automatic transmission:
turn the key to position 2in the ignition
lock.
X Shift the automatic transmission to posi-
tion N.
As soon as the vehicle is loaded:
X Prevent the vehicle from rolling away by
applying the parking brake.
X Vehicles with manual transmission:
engage first or reverse gear.
X Vehicles with automatic transmission:
shift the automatic transmission to posi-
tion P.
X Turn the key in the ignition lock to position
0 and remove the key from the ignition
lock.
X Secure the vehicle.
! Only lash the vehicle down by the wheels
or wheel rims, not by parts of the vehicle
such as axle or steering components. Oth-
erwise, the vehicle could be damaged. Notes for 4MATIC vehicles
! Vehicles with 4MATIC must not be towed
with the front or rear axle raised; otherwise,
the transmission may be damaged.
If the vehicle has transmission damage or
damage to the front or rear axle, have it trans-
ported on a transporter or trailer.
In the event of damage to the electrical
system If the battery is defective, the automatic
transmission will be locked in position
P. To
shift the automatic transmission to position
N, you must provide power to the vehicle's
electrical system in the same way as when
jump-starting (Y page 341).
Have the vehicle transported on a transporter
or trailer. Recovering a vehicle that has become
stuck
! When recovering a trapped vehicle, do not
jerk the vehicle or pull it at an angle. If the
tractive power is too high, the vehicles
could be damaged.
If the drive wheels get trapped on loose or
muddy ground, recover the vehicle with the
utmost care, especially so if the vehicle is
laden.
Never attempt to recover a vehicle with a
trailer attached.
Pull out the vehicle backwards, if possible,
using the tracks it made when it became
stuck. Tow-starting (emergency engine
starting)
When tow-starting, it is important that you
observe the safety instructions (Y page 342)
and the legal requirements for the relevant
countries.
! Vehicles with automatic transmission
must not be tow-started. The transmission
may otherwise be damaged.
You can find information on "Jump-starting"
at (Y page 341).
Before tow-starting the following conditions
must be fulfilled:
R the battery is connected.
R the engine has cooled down.
R the exhaust system has cooled down. Towing and tow-starting
345Breakdown assistance Z

Operation with a trailer:
the applicable
value for the rear tyres is the maximum tyre
pressure value stated in the table inside the
fuel filler flap.
The table inside the fuel filler flap may state
tyre pressures for different load conditions.
These are defined in the table as different
numbers of passengers and amounts of lug-
gage. The actual number of seats may vary;
for more information, please refer to the vehi-
cle's registration documents.
The tyre pressures specified on the fuel filler
flap apply to all tyres approved for this vehi-
cle, if not stated otherwise. If a tyre size precedes a tyre pressure, the
following tyre pressure information is only
valid for that tyre size.
To test tyre pressure, use a suitable pressure
gauge. The outer appearance of a tyre does
not permit any reliable conclusion about the
tyre pressure. G
WARNING
If you fit unsuitable accessories onto tyre
valves, the tyre valves may be overloaded and
malfunction, which can cause tyre pressure
loss. Due to their design, retrofitted tyre pres-
sure monitors keep the tyre valve open. This
can also result in tyre pressure loss. There is
a risk of accident.
Only screw standard valve caps or valve caps
specifically provided by Mercedes-Benz for
your vehicle onto the tyre valve. G
WARNING
If the tyre pressure drops repeatedly, the
wheel, valve or tyre may be damaged. Tyre
pressure that is too low may result in a tyre
blow-out. There is a risk of accident.
R Check the tyre for foreign objects.
R Check whether the wheel is losing air or the
valve is leaking.
If you are unable to rectify the damage, con-
tact a qualified specialist workshop.
If possible, only correct tyre pressures when
the tyres are cold.
The tyres are cold:
R if the vehicle has been parked with the tyres
out of direct sunlight for at least three
hours and
R if the vehicle has not been driven further
than 1.6 km
Depending on the ambient temperature, the
speed at which you are driving and the load
on the tyres, the tyre temperature and thus
the tyre pressure change by approximately
10 kPa per 10 † (0.1 ba r/1.5 psi). Take this
into account when checking the pressure of
warm tyres and only correct it if it is too low
for the current operating conditions.
Driving with tyre pressure that is too high or
too low can:
R shorten the service life of the tyres
R cause increased tyre damage
R have a negative effect on handling charac-
teristics and thus the driving safety (e.g.
aquaplaning)
i The tyre pressure values given for low
loads are minimum values which offer you
good ride comfort characteristics.
However, you can also use the values given
for higher loads. These are permissible and
will not adversely affect the running of the
vehicle. H
Environmental note
Check the tyre pressure regularly, at least
every 14 days. 354
Tyre pressureWheels and tyres

Tyre pressure loss warning system
Important safety notes While the vehicle is in motion, the tyre pres-
sure loss warning system monitors the set
tyre pressure using the rotational speed of
the wheels. This enables the system to detect
significant pressure loss in a tyre. If the speed
of rotation of a wheel changes as a result of
a loss of pressure, a corresponding warning
message will appear in the multifunction dis-
play.
The tyre pressure warning system does not
warn you of an incorrectly set tyre pressure.
Observe the notes on the recommended tyre
pressure (Y page 353).
The tyre pressure loss warning system does
not replace the need to regularly check your
vehicle's tyre pressures, since an even loss of
pressure on several tyres at the same time
cannot be detected by the tyre pressure loss
warning system.
The tyre pressure monitor is not able to warn
you of a sudden loss of pressure, e.g. if the
tyre is penetrated by a foreign object. In the
event of a sudden loss of pressure, bring the
vehicle to a halt by braking carefully. Avoid
abrupt steering manoeuvres.
The function of the tyre pressure loss warning
system is limited or delayed if:
R snow chains are fitted to your vehicle's
tyres.
R road conditions are wintry.
R you are driving on sand or gravel.
R you adopt a very sporty driving style (cor-
nering at high speeds or driving with high
rates of acceleration).
R you are towing a very heavy or large trailer.
R you are driving with a heavy load (in the
vehicle or on the roof). Restarting the tyre pressure loss warn-
ing system Restart the tyre pressure loss warning system
if you have:
R
changed the tyre pressure
R changed the wheels or tyres
R fitted new wheels or tyres
X Before restarting, consult the table of tyre
pressures on the inside of the fuel filler flap
to ensure that the tyre pressure in all four
tyres is set correctly for the respective
operating conditions.
The tyre pressure loss warning system can
only give reliable warnings if you have set
the correct tyre pressure. If an incorrect
tyre pressure is set, these incorrect values
will be monitored.
X Observe the notes in the section on tyre
pressures (Y page 353).
Restarting using the 4-button multifunc-
tion steering wheel
X Make sure that the key is in position 2in
the ignition lock.
X Press the Vbutton to select Tyre
Tyre
pressure Menu: R pressure Menu: R.
X Press the Cbutton.
The RFI active Restart: R
RFI active Restart: R message
appears in the multifunction display.
X Press the Cbutton.
The Tyre
Tyre press.
press. OK?
OK?message appears in
the multifunction display.
If you wish to confirm the restart:
X Press the Wbutton.
The Run Flat Indicator restarted Run Flat Indicator restarted
message appears in the multifunction dis-
play.
After a teach-in period, the tyre pressure
loss warning system will monitor the set
tyre pressures of all four tyres.
or Tyre pressure
355Wheels and tyres Z

Useful information
............................362
Information on technical data .........362
Genuine Mercedes-Benz parts .........362
Vehicle electronics ...........................363
Identification plates .........................364
Service products and capacities .....365
Vehicle data ...................................... 372
Trailer tow hitch ................................ 373
24 GHz radar sensor system (coun-
try overview) ..................................... 375 361Technical data

equipment") when retrofitting RF (radio fre-
quency) transmitters. Comply with the legal
requirements for add-on parts.
If your vehicle has fittings for two-way radio
equipment, use the power supply or aerial
connections intended for use with the basic
wiring. Be sure to observe the manufacturer's
additional instructions when installing.
Deviations with respect to wavebands, maxi-
mum transmission outputs or aerial positions
must be approved by Mercedes-Benz.
The maximum transmission output (PEAK) at
the base of the aerial must not exceed the
following values: Waveband Maximum
transmission
output (PEAK) Short wave (f < 54 MHz) 100 W
4 m waveband 30 W
2 m waveband 50 W
Trunked radio/Tetra 35 W
70 cm waveband 35 W
GSM/DCS/PCS
850/900/1800/1900 10 W
UMTS/LTE 10 W
The following can be used in the vehicle with-
out restrictions:
R
RF transmitters with a maximum transmis-
sion output of up to 100 mW
R mobile phones (GSM/DCS/PCS/UMTS/
LTE)
There are no restrictions when positioning the
aerial on the outside of the vehicle for the fol-
lowing wavebands:
R trunked radio/Tetra
R 70 cm waveband
R GSM/DCS/PCS
R UMTS/LTE Identification plates
Vehicle identification plate with vehi-
cle identification number (VIN)
X
Open the front right-hand door.
You will see vehicle identification plate :. Example: vehicle identification plate
:
Vehicle identification plate
; Vehicle manufacturer (Daimler AG)
= EU type approval number (only for certain
countries)
? Vehicle identification number (VIN)
A Maximum permissible gross vehicle
weight (kg)
B Maximum permissible mass of vehicle/
trailer combination (kg)
C Maximum permissible front axle load (kg)
D Maximum permissible rear axle load (kg)
E Paint code
i The data shown on the identification plate
is example data. This data is different for
every vehicle, and can deviate from the
data shown here. You can find the data 364
Identification platesTechnical data

tions can be avoided by refuelling with diesel
fuel that corresponds to the climatic specifi-
cations outlined in EN 590. At unusually low
outside temperatures, it is possible that the
flow characteristics of the diesel fuel could be
insufficient. Accordingly, diesel fuel from
warmer areas may not be suitable for opera-
tion in colder climatic conditions.
i Further information on country-specific
fuel properties can be obtained from oil
companies, e.g. at filling stations.
Flow improvers
Flow improvers can be added to improve the
cold resistance of diesel fuel. The effective-
ness of flow improvers cannot be guaranteed
with all fuels.
Only use flow improvers tested and approved
by Mercedes-Benz. During use, please
observe the information on operation.
Correct dosage and thorough mixing are deci-
sive factors in ensuring improvement in low-
temperature resistance. Under certain cir-
cumstances, an excessive dosage may
actually decrease low-temperature resist-
ance and should therefore be avoided. Follow
the manufacturer's dosing instructions.
Mix the additive into the diesel in good time,
before the flow characteristics of the diesel
become insufficient. Otherwise, malfunctions
can only be rectified by heating the entire fuel
system, e.g. by parking in a heated garage.
More information about recommended flow
improvers can be obtained from any qualified
specialist workshop.
Fuel consumption information H
Environmental note
CO 2(carbon dioxide) is the gas which scien-
tists believe to be principally responsible for
global warming (the greenhouse effect). Your
vehicle's CO 2emissions are directly related to
fuel consumption and therefore depend on: R
efficient use of the fuel by the engine
R driving style
R other non-technical factors, such as envi-
ronmental influences or road conditions
You can minimise your vehicle's CO 2emis-
sions by driving carefully and having it serv-
iced regularly.
The vehicle will use more fuel than usual in
the following situations:
R at very low outside temperatures
R in urban traffic
R on short journeys
R in mountainous terrain
R when towing a trailer
i Only for certain countries: you can find
the current consumption and emission val-
ues of your vehicle in the COC documents
(EU CERTIFICATE OF CONFORMITY). These
documents are delivered with your vehicle.
The consumption figures were in each case
based on the currently applicable version:
R for vehicles that comply with standards
up to and including the EURO 4 standard,
in accordance with EU Directive
80/1268/EEC
R for vehicles that comply with or exceed
the EURO 5 standard, in accordance with
Regulation (EC) No. 715/2007
Deviations from these values may occur
under normal operating conditions. AdBlue
®
General notes AdBlue
®
is a non-flammable, non-toxic, col-
ourless, odourless and water-soluble fluid.
High outside temperatures G
WARNING
If you open the AdBlue ®
tank cap, small
amounts of ammonia vapour may be released. 368
Service products and capacitiesTechnical data

R
vehicle-specific weight information can be
found on the vehicle identification plate
(Y page 364).
R only for certain countries: you can find vehi-
cle-specific vehicle data in the COC docu-
ments (CERTIFICATE OF CONFORMITY).
These documents are delivered with your
vehicle. Dimensions and weights
Model : :
Open-
ing height ;
;
Maximum
headroom All models
2087 mm 1955 mm
Missing values were not available at the time
of going to print. All models
Vehicle length
4525 mm
Vehicle width including
exterior mirrors
2016 mm
Vehicle width excluding
exterior mirrors
1840 mm
Vehicle height
1689 mm
Wheelbase
2755 mm
Maximum roof load
75 kg GLK 300 4MATIC
GLK 300 4MATIC BlueEF-
FICIENCY
Unladen weight
1845 kg
Ground clearance
202 mm
GLK 350 4MATIC BlueEF-
FICIENCY
Unladen weight
Ground clearance
202 mm
GLK 200 CDI BlueEFFI-
CIENCY
GLK 220 CDI BlueEFFI-
CIENCY
Unladen weight, manual
transmission
1825 kg
Unladen weight, auto-
matic transmission
1845 kg
Ground clearance
188 mm
GLK 220 BlueTEC 4MATIC
GLK 250 BlueTEC 4MATIC
GLK 350 CDI 4MATIC
Unladen weight
1880 kg
Ground clearance
188 mm
Trailer tow hitch
Mounting dimensions
! If you have a trailer tow hitch retrofitted,
changes to the cooling system may be nec-
essary, depending on the vehicle type.
If you have a trailer tow hitch retrofitted,
observe the anchorage points on the chas-
sis frame. Trailer tow hitch
373Technical data Z

Example: anchorage points for the trailer tow hitch
: Anchorage points
; Overhang dimension
= Rear axle centre line
For trailer tow hitches fitted at the factory, the
overhang dimension including protective cov-
ering is 1,058 mm. Trailer loads
All models
Permissible trailer load,
unbraked
750 kg
Permissible trailer load,
braked
14 2000 kg
Maximum drawbar nose-
weight
15 80 kg
Permissible rear axle
load when towing a trailer
1410 kg
14
At a minimum gradient-climbing capability of 12% from a standstill.
15 The drawbar noseweight is not included in the trailer load. 374
Trailer tow hitchTechnical data