2012 MERCEDES-BENZ GL SUV air suspension

R
you depress the brak epedal again wit ha
certain amount of pressure until ëdis-
appears from themultifun ctiondisplay.
R you secur ethe vehi cleu sing the elec tric
parking brake.
R you activat eDISTRONIC PLU S.
i After atime, the electric parking brake
secures the vehicle and relieves the service
brake.
The electric parking brak esecures the vehicle
automatically if the HOL Dfunction is activa-
ted and:
R the driver' sdoor is open and the driver's
seat belt is unfastened.
R the engin eisswitched off, unless it is auto-
matically switched off by the ECO start/
stop function.
R as ystem fault occurs.
R the powe rsupply is not sufficient.
On steep uphill or downhill inclines or if there
is am alfunction, the transmissio nmay also
be automatically shifted int oposition P. AIRMATIC package
Genera lnotes AIRMATI
Cenable sasuspension tuning set-
ting to be selected and regulates the damping
behaviour and level of your vehicle. The sys-
tem comprises aminimum of two compo-
nents. These are AD S(Adaptive Damp ingS ys-
tem) (Y page 212) and level control
(Y page 213) .Your vehicle ma yalso be equip-
ped with the Active Curv eSystem
(Y page 213).
Observe the notes on driving with atrailer
(Y page 257).
ADS (Adaptive Damping System) General notes
ADS adapts th
edamping characteristic sto
the curren toperatin gand driving situation. Thi
sd epends on:
R your drivin gstyle
R the road surface conditions
R the AD Ssetting
R the vehicle level setting
Your selection remains stored even if you
remov ethe key from the igni tion lock.
Sports tuning Example: vehicles wit
hthe ON&OFFROA Dpackage
X Start the engine.
X Press button :.
Indicator lamp ;ligh tsup. You have sele c-
ted "Sport stuning". The vehicle is lowered
by 15 mm.
The firmer suspension tuning in Spor tmode
ensures even bette rcontac twith th eroad.
Select this mode when empl oyingasporty
driving style, e.g .onwindingcountr yroads.
Comfor ttun ing
X Press button :.
Indicator lamp =light sup. You have selec-
ted "Comfor ttuning". The vehicle is raised
by 15 mm.
In com fort mode, the dri ving characteristics
of your vehicl eare more comfortable. There-
fore, select this mode if you prefer amore
comfortable drivin gstyle. Select comfort
mode also when driving fast on straigh troads,
e.g. on straight stretches of motorway. 212
Driving systemsDriving and pa
rking

Usefu
linfor mati on
i This Owner's Manual describes all mod-
els, series and optional equipment for your
vehicle that were available at the time of
going to press. National variation sare pos-
sible. Note that your vehicl emay not be
equippe dwith all of the function sdescri-
bed. This is also the case for system sand
functions relevant to safety.
i Read the information on qualified special-
ist workshops: (Y page25). Impo
rtantsafety notes G
WARNING
If wheels and tyres of the wron gsize are used,
the wheel brakes or suspension components
may be damaged. There is arisk of accident.
Always replac ewheels and tyr es with those
that fulfil th especifications of the original part
(designation ,manufacturer, model). G
WARNING
Af lat tyre severely impair sthe driving, steer-
ing and bra king characteristics of the vehicle.
There is arisk of accident.
Tyres withou trun-flat characteristics:
R do not drive with aflat tyre.
R immediately replac ethe fla ttyre with your
emergenc yspare wheel or spare wheel, or
consult aqualified specialist workshop.
Tyres with run-flat characteristics:
R pay attention to the information and warn-
ing notices on MOExtended tyre s(tyres
with run-flat charac teristics).
Accessorie sthat ar enot approved for your
vehicle by Mercedes-Ben zorare not be ing
use dcorrectly can impair the operating
safety. Before purchasing and using non-approved
accessories, visi
taqualified specialist work-
sho pand enquire about:
R suitability
R leg alstipulations
R factory recommendations
Information on the dimensions and types of
wheels and tyres for your vehicle can be
found in the "Wheel/tyre combinations" sec-
tion (Y page 409).
Information on air pressure for the tyres on
your vehicle can be found:
R on the tyre pressure label on the fuel filler
flap (Y page 175)
R in the "Tyre pressure" section
R under "Tyre pressure" (Y page 399)
Modification work on the brake system and
wheels is not permitted. The use of wheel
spacers or brake dust shields is not permit-
ted. This invalidates the general operating
permit for the vehicle.
i Further information on wheels and tyres
can be obtained at any qualified specialist
workshop. Operation
Information on driving
Check the tyre pressures when the vehicle is
heavily laden and, if necessary, adjust.
While driving, pay attention to vibrations,
noises and unusual handling charac teristics,
e.g .pulling to one side .This ma yindicate that
the wheels or tyres are damaged. If you sus-
pect that atyre is defective, reduce your
speed immediately. Stop the vehicle as soon
as possibl etocheckthe wheels and tyres for
damage. Hidden tyr edamage could also be
causing the unusual handling characteristics.
If you find no signs of damage, have the tyres
and wheel schecked at aqualified specialist
workshop.
When parking your vehicle, make sure that
the tyres do not get deformed by the kerb or 396
OperationWheels and tyres

Country Radio type approval number
Brazil 1489-10-4415
Dubai TRA, Registered NO
0016161/08
TRA, Registered NO
0016162/08
Morocco MR5527 ANRT 2010
/27. April
2010
MR5526 ANRT 2010/ 27. April
2010 Ph
ilip-
pines ESD-1105558C
Singa-
pore Compliance with IDA Standard
N0140-09
South
Africa TA-2008/1068
TA-2008/1069
Changing
awheel Flat tyre
Yo uc an find information on wha ttodointhe
even tofa flat tyre in th e"Breakdown assis-
tance" sectio n(Ypage 378). Instruction sfor
drivin gwith MOExtended tyres in the event of
af lat tyre are also provided there.
Vehicles with an emergency spare
wheel: in the event of aflat tyre, the emer-
gency spare wheel is fitted according to the
description under "Fittin gawheel"
(Y page 405). Inte
rchangin gthe wheels G
WARNING
Interchanging the front and rear wheel smay
severely impair the driving characteristic sif
the wheels or tyres have differen tdimensions.
The wheel brakes or suspension componen ts
may als obedamaged. There is arisk of acci-
dent. Interchange front and rear wheels only if the
wheels and tyre
sare of th esame dimensions.
! On vehicles fitted with atyre pressure
monitor ,electronic componen tsare loca-
ted in the wheel.
Tyre-fittin gtools should not be applied in
the area of the valve, as this coul ddamage
the electronic components.
Only have tyre schanged at aqualified spe-
cialist workshop.
Interchanging the front and rear wheel sof
diff ering dimension scan render the general
operating permit invalid.
Obse rvet he instructions and safet ynotes in
the "Fi ttin gaw heel" section (Y page 405).
The wear pattern sonthe fr ont an drear tyr es
diff er,depending on the operating conditions.
Interchange the wheels befor eaclear wear
pattern ha sform edon the tyr es.F ront tyres
typicall ywearm ore on the shoulder sand the
rea rtyre sint he centre.
On vehicles that have the same size front and
rear wheels, you can interchange the wheels
every 5000k mto10,000 km depending on
the degre eoftyre wear. Maintain the direc-
tion of tyre rotation.
Clea nthe con tact surface softhe wheel and
the brake disc thoroughly ever ytime awheel
is interchanged. Chec kthe tyr epressure and,
if necessary, restart th etyre pressure loss
warning syste morthe tyrepressure monitor. Directio
nofrotation
Tyres with aspecified direction of rotation
have additional benefits, e.g. if there is arisk
of aquaplaning. You will only gain these ben-
efits if the correct direction of rotation is
observed.
An arrow on the sidewall of the tyre indicates
its correct direction of rotation. 404
Changing
awheelWheels and tyres