2012 MERCEDES-BENZ GLK SUV snow chains

up
: for a higher or down ;for a lower
set speed.
On vehicles with a 4-button multifunction
steering wheel, the set value appears in the
left-hand status indicator. On vehicles with
a luxury multifunction steering wheel (12
buttons), the set value appears in the mul-
tifunction display.
X To increase or reduce the set speed by
2 km/h increments: briefly press the
cruise control lever beyond the pressure
point up :for a higher or down ;for a
lower set speed.
On vehicles with a 4-button multifunction
steering wheel, the set value appears in the
left-hand status indicator. On vehicles with
a luxury multifunction steering wheel (12
buttons), the set value appears in the mul-
tifunction display. Off-road drive program
i The off-road drive program is only availa-
ble on vehicles with the Off-Road Engineer-
ing package.
The off-road drive program assists you in driv-
ing off-road. The engine’s performance char-
acteristics and the gearshifting characteris-
tics of the automatic transmission are adap-
ted for this purpose. ABS, ESP ®
and ETS pro-
grams especially adapted to off-road driving
are also activated.
Do not use the off-road drive program on
roads that are snow-covered or icy or if you
have fitted your vehicle with snow chains.
For information about driving off-road, see
(Y page 170). X
To switch on: press the:button.
Indicator lamp ;lights up.
On vehicles with a luxury multifunction steer-
ing wheel (12 buttons): in the multifunction
display you see the off-road symbol: X
To switch off: press button:.
Indicator lamp ;goes out. On vehicles
with a luxury multifunction steering wheel
(12 buttons), off-road symbol also goes off. Towing a trailer
Notes on towing a trailer
Important safety notes G
WARNING
The braking system can overheat if you leave
your foot on the brake pedal while driving.
This increases the braking distance and could
even cause the braking system to fail. There
is a risk of an accident.
Never use the brake pedal as a footrest. Do
not simultaneously depress both the brake
pedal and the accelerator pedal while driving. Towing a trailer
215Driving and parking Z

If you have fitted M+S tyres:
X
Check the tyre pressures (Y page 353).
X Restart the tyre pressure loss warning sys-
tem (Y page 355).
After fitting a spare wheel or an emergency
spare wheel, do not drive faster than
80 km/h. Snow chains
G
WARNING
If you have fitted snow chains to the front
wheels, they may scrape against the vehicle
body or chassis components. This could
cause damage to the vehicle or the tyres.
There is a risk of an accident.
To avoid hazardous situations:
R never fit snow chains on the front wheels
R fit snow chains to the rear wheels in pairs.
! Vehicles with steel wheels: if you wish
to fit snow chains to steel wheels, make
sure that you remove the respective
wheels' hubcaps first. The hubcaps may
otherwise be damaged.
For safety reasons, Mercedes-Benz recom-
mends that you only use snow chains that
have been specially approved for your vehicle
by Mercedes-Benz, or that are of a corre-
sponding standard of quality.
If you intend to fit snow chains, please bear
the following points in mind:
R snow chains cannot be fitted to all wheel-
tyre combinations. Permissible wheel-tyre
combinations (Y page 357).
R only use snow chains when the road sur-
face is completely snow-covered. Remove
the snow chains as soon as possible when
you come to a road that is not snow-cov-
ered.
R local regulations may restrict the use of
snow chains. Observe the appropriate reg-
ulations if you wish to fit snow chains. R
Do not exceed the maximum permissible
speed of 50 km/h.
R Snow chains must not be fitted to the emer-
gency spare wheel, e.g. a collapsible emer-
gency spare wheel.
i You can deactivate ESP ®
(Y page 67)
when pulling away with snow chains fitted.
This way you can allow the wheels to spin
in a controlled manner, achieving an
increased driving force (cutting action). Tyre pressure
Tyre pressure specifications
G
WARNING
Tyres with too low or too high tyre pressure
contain the following hazards:
R they can burst, in particular if the vehicle is
heavily laden or when driven at high
speeds.
R the tyres can wear excessively and/or
unevenly, which can severely impair tyre
traction.
R the driving, steering and braking character-
istics may be severely impaired.
There is a risk of accident.
Follow recommended tyre inflation pressures
and check the pressure of all the tyres includ-
ing the spare wheel:
R at least every two weeks
R if the load changes
R before beginning a long journey
R for changed operating conditions, e.g. off-
road driving
If necessary, correct the tyre pressure.
You will find a table of tyre pressures for var-
ious operating conditions on the inside of
your vehicle's fuel filler flap.
Operation with an emergency spare
wheel: the applicable value is stated on the
wheel and in the "Wheel/tyre combinations"
section (Y page 357). Tyre pressure
353Wheels and tyres Z

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

Tyres
Summer tyres Light-alloy wheels V1
BA 235/6
0 R 17 102 V 7.5 J
x 17 H2 ET 47.5 #
FA
RA 235/50 R 19 99 V
255/45 R 19 100 V
13 7.5 J x 19 H2 ET 47
8.5 J x 19 H2 ET 52 #
FA
RA 235/45 R 20 100 W XL
255/40 R 20 101 W XL
13 8.0 J x 20 H2 ET 45
9.0 J x 20 H2 ET 57 #
All-weather tyres Light-alloy wheels V1
BA 235/60 R 17 102 V M+S 7.5 J x 17 H2 ET 47.5 #
FA
RA 235/60 R 17 102 V M+S
255/55 R 17 104 V M+S
13 7.5 J x 17 H2 ET 47.5
8.0 J x 17 H2 ET 57 #
BA 235/50 R 19 99 V M+S 7.5 J x 19 H2 ET 47 #
All-terrain tyres Light-alloy wheels V1
BA 235/60 R 17 102 H M+S 7.5 J x 17 H2 ET 47.5 #
Winter tyres Light-alloy wheels V1
BA 235/60 R 17 102 H M+S
i 7.5 J x 17 H2 ET 47.5 #
BA 235/50 R 19 99 H M+S
i 7.5 J x 19 H2 ET 47 #
Collapsible emergency spare wheel
13Tyres Wheels V1
185/75 – 17 98 P
Tyre pressure: 280 kPa (2.8 bar/41 psi) 6.0 B x 17 H2 ET 25 #
Depending on the country, the engine and the wheels fitted, your vehicle may be equipped
with TIREFIT or a collapsible emergency spare wheel.
i
The specified tyre pressure is printed in yellow on the emergency spare wheel.
13 Use of snow chains is not permitted. Observe the notes in the "Snow chains" section. Wheel and tyre combinations
359Wheels and tyres Z