2012 MERCEDES-BENZ GL SUV steering

X
Slide cover :of positive terminal ;in the direction of the arro w.
X Connect positive terminal ;on your vehicl etopositive terminal =of donor battery B
using the jum plead. Alway sbegin with positive terminal ;on your own vehicle fir st.
X Start th eengine of the donor vehicle and run it at idling speed.
X Connec tnegativ eterminal ?of donor battery Bto eart hpoint Aof your vehicle using
the jum plead, connectin gthe jum plead to donor battery Bfirst.
X Start the engine.
X Before disconnecting the jum pleads, let the engines run for several minutes.
X First, remove the jum pleads from eart hpoint Aand negative terminal ?,then from pos-
itiv eterminal ;and positiv eterminal =,each time beginning at the contacts on your own
vehicle first.
X Close cover :of positive terminal ;after removing the jump leads.
X Have the battery checked at aqualified specialist workshop.
i Jump-starting is not considered to be anormal operatin gcondition.
i Jump-starting cables and further information regarding jum pstartin gcan be obtained at
any qualified specialis tworkshop. Towing and tow-starting
Important safety notes
G
WARNING
Safety-relevant func tions are restric tedorn ot
available if:
R the engin eisnot running.
R the brake system or the power steering is
malfunctioning
R the voltage supply or the vehicle' selectrical
system is malfunctioning.
If your vehicle is towed, significantly greater
forc emay be required to steer the vehicle or
to brake. There is arisk of an accident.
In such circumstances, use atowing bar.
Make sure that the steering is moving freely
befor etowing. G
WARNING
If the weight of the vehicle to be towed or tow-
started is greater than the permissible gross
weight of your vehicle:
R the towin geye could detach itself
R the vehicle/traile rcombination coul dover-
turn.
There is arisk of an accident.
When towing or tow-startin ganothe rvehicle,
its weight should not be greater than the per-
missible gross weight of your vehicle. G
WARNING
The vehicle is braked when the HOL Dfunction
or DISTRONIC PLUS is activated. Therefore,
deactivate HOLD and DISTRONIC PLUS if the
vehicle is to be towed.
! Make sure that the electric parking brake
is released. If the electric parking brake is
faulty, visit aqualified specialist workshop.
! Only secure the tow rope or towing bar to
the towing eyes. The vehicle may otherwise
be damaged. 388
Towin
gand tow-startingBreakdow nassistance

switch, the hazard warnin
glamps start
flashing again. Transporting 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.
The towing eyes or trailer tow hitch can be
used to pull the vehicle onto atrailer or trans-
porter if yo uwish to transport it.
X 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 electric parkin gbrake.
X Shift th eautomatic transmission to posi-
tion P.
X Turn the key to position 0in the ignition
lock and remove it.
X Secure the vehicle. Information 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 atransporter or trailer.
In the even tofdamage to the ele ctrical
system
If the battery is defective, the automatic
transmission will be locked in position P.To
shif tthe automatic transmission to position
N,y ou must provide power to the vehicle's
electrical system in the same way as when
jump-starting (Y page 386).
Hav ethe vehicle transported on atransporter
or trailer. Recov
ering avehicle that ha sbecome
stuck
! When recovering atrapped vehicle ,donot
je rk the vehicle or pull it at an angle. If the
tractive powe rist oo high, th evehicles
could be damaged.
If th edrive wheels ge ttrapped on loose or
muddy ground, recover th evehicle with the
utmost care, especially so if the vehicle is
laden.
Never attempt to recover avehicle with a
trailer atta ched.
Pull out the vehicle backwards, if possible,
using the tracks it made when it became
stuck. Tow-starting (emergency engine
starting)
! Vehicles with automatic transmission
must not be tow-star ted. Otherwise, you
could damage the automatic tra nsmission.
You ca nfind information on "Jump-starting"
at (Y page 386). Electrical fuses
Important safet
ynotes G
WARNING
Only use fuses that have been approved for
Mercedes-Benz vehicles and which have the
correct fuse ratin gfor the system scon-
cer ned. Do not attempt to repair or bridge
faulty fuses. Usin gfuses which have not been
approved or attempting to repair or bridge
faulty fuses could cause the fuse to be over-
loaded and result in afire. Have the cause
traced and rectified at aqualified specialist
workshop.
! Only use fuses marked with an "S" for the
fuse box in the engine compartment and
under the rear bench seat. Components or
systems could othe rwise be damaged. Electrical fuses
391Breakdown assistance Z

Snow chains
G
WARNING
If you hav efitted 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 arisk of an accident.
To avoid hazardous situations:
R never fit snow chains on the fron twheels
R fit snow chains to the rea rwheels in pairs.
! You must driv eatraised vehicle level if
snow chains have been fitted. The vehicle
could otherwise be damaged. Observe the
information in the "AIRMATIC package"
section.
! Do not use the Adaptive Damping System
(ADS )sports mode if you have fit teds now
chains .The vehicle could otherwise be
damaged.
! On some tyr esizes there is not enough
space for snow chains. In order to prevent
damage to the vehicle or the tyres, observe
the "Tyre and wheel combinations" section
under "Tyres and wheels".
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 acorre-
spondin gstandard of quality.
If you intend to fit snow chains ,please bear
the following points in mind:
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 aroad that is not snow- cov-
ered.
R do not exceed the maximu mpermissible
speed of 50 km /h. R
local regulations may restric tthe use of
snow chains. Observ ethe appropriate reg-
ulations if you wish to fit snow chains.
R snow chains cannot be fitted to all wheel-
tyr ec ombinations. Permissible wheel-tyre
combination s(Ypage 409).
i You may wish to deactivat eESP®
when
pull inga way with snow chains fitted
(Y page 67). This way you can allow the
wheels to spin in acontrolled manner ,ach-
ieving an increased driving force (cutting
action).
For more information on driving with the
emergency spare wheel, se e(Ypage 414). Ty
re pr essure Tyr
epressure 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 arisk 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 along journey
R for changed operatin gconditions, e.g. off-
road driving
If necessary ,correct the tyr epressure. G
WARNING
If you fit unsuitabl eaccessories onto tyre
valves ,the tyr evalves may be overloaded and Tyr
epressure
399Wheels and ty res
Z

i
The tyr epressure values given for low
load sare minimum values which offe ryou
good rid ecomfor tcharacteristics.
However ,you can also use the values given
for higher loads. These ar epermissible and
will not adversely affect the running of the
vehicle. Ty
re pr essur eloss warning system
Important safety notes While the vehicle is in motion, the tyre pres-
sure loss warnin gsystem monitors the set
tyre pressure using the rotational speed of
the wheels. This enable sthe system to detect
significant pressur eloss in atyre. If the speed
of rotation of awheel changes as aresult of
al oss of pressure, acorrespondin gwarning
message will appea rinthe multifunction dis-
play.
The tyr epressure warning system does not
warn yo uofani ncorrectly set tyre pressure.
Observe the notes on the recommended tyre
pressure (Y page399).
Th et yre pressure los swarning 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 asudden loss of pressure, e.g. if the
tyre is penetrated by aforeign objec t. Inthe
event of asudden loss of pressure, bring the
vehicle to ahalt 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 avery sporty driving style (cor-
nering at high speeds or driving with high
rates of acceleration). R
you are towing avery heavy or large trailer.
R you are driving with aheavy load (in the
vehicle or on the roof).
Resta rting the ty re pressur eloss warn-
ing system Restart the tyre pressure loss warnin
gsystem
if you have:
R changed the tyre pressure
R changed the wheels or tyres
R fitted new wheels or tyres
X Before restarting, make sure that the tyre
pressures are set properly on all four tyres
for the respective operating conditio ns.
The recommended tyr epressures can be
found in th etable on the fuel filler flap.
The tyre pressure loss warning system can
only give reliabl ewarnings if you have set
the correct tyre pressure. If an incorrect
tyre pressure is set, these incorrec tvalues
will be monitored.
X Also observ ethe notes in the sectionon
tyre pressures (Y page 399).
X Make sure tha tthe key is in posi-
tion 2(Ypage 159) in the ignition lock.
X Press the =or; button on the steer-
ing wheel to selec tthe Serv. menu.
X Press the 9or: button to select
Tyre pressure .
X Press the abutton.
The RunF lat Indicator active Restart with OK message appe
arsint he
multifunction display.
If yo uwish to confirm the resta rt:
X Press the abutton.
The Tyre press. no wOK? message
appe arsint he multifunction display.
X Press the 9or: button to select
Yes .
X Press the abutton.
The RunF lat Indicator restarted message appe
arsint he multifunction dis-
play. Ty
re pressure
401Wheelsand ty res Z