2012 MERCEDES-BENZ GL SUV park assist

HIGH RANGE
Positio
nfor all norma lon-
road driving conditions. LOW RANGE
Off-road pos
ition for driv-
ing off-road and fording.
The transmission ratio
between the engine and
wheels is only approx-
imately one third of that in
the HIG HRANGE road
pos ition. The drive torque
is correspondingly higher
as aresult.
Do not use LOW RANGE:
R on slippery road surfa-
ces, e.g. in the even tof
slush
R on snow or ice-covered
roads
R if you hav esnow chains
on you rvehicle The LOW RANGE off
-road gear assists you
when drivin goff-roa dand whe nfordi ng.W hen
LOW RANGE is engaged, the engine’s per-
forma ncec haracteristic sand the gearshifting
characteristic softhe automatic transmission
ar ea dapted for this purpose.
Fur ther information about "Drivin goff-road"
(Y pag e188). Yo uwill find information about
drivin gsafety systems in conjunction with
LOW RANGE in the "Safety" section
(Y page 60).
From HIGH RANG EtoLOW RAN GE
! Only change from HIGH RANGE to LOW
RANGE if:
R the engi neis running
R the transmission is in position N
R you are drivin gatspeeds below
40 km/h
X Press LOW RANGE button :.
Indicator lamp ;flashes.
Onc ethe gear change procedur eiscom-
plete, indicator lamp ;lights up. The LOW RANGE display appear
sint he multifunction
displa yand in the status indicator.
While indicator lamp ;is flashing, you can
cancel the gea rchange by pressing LOW
RANGE button :again.
i You can nota ctivate LOW RANGE if the
SPORT on-road program is activated. The
LOW RANG ENot in drive program SPORT message then appears in th
emulti-
function display.
From LOW RANG EtoHIGH RANGE
! Only change from HIGH RANGE to LOW
RANGE if:
R the engine is running
R the transmission is in position N
R if you are driving at speeds below
70 km/h
X Press LOW RANGE button :.
Indicator lamp ;flashes.
When the gear change is complete, indica-
tor lamp ;goes out. In the multifunction
display, the LOWR ANGE Off message
appears and status indicator =goes out.
Whil eindicator lamp ;is flashing, you can
cancel the gea rchange by pressing LOW
RANGE button :again. Driving systems
255Driving and parking Z

Make sur
ethat the followin gvalues are not
exceeded:
R the permissible trailer drawba rnoseweight
R the permissible trailer load
R the permissible rea raxle load of the towing
vehicle
R the maximum permissible gros svehicle
weight of both the towing vehicle and the
trailer
The applicable permissible values, which
must not be exceeded, can be found:
R in the vehicle documents
R on the identification plates of the trailer tow
hitch, the trailer and the vehicle
If the values differ, the lowest value applies.
You will fin dthe values approved by the man-
ufacturer on the vehicle identification plates
and those for the towing vehicle under "Tech-
nical data "(Ypage 433).
When towing atrailer, your vehicle's handling
characteristics wil lbedifferent in comparison
to when drivin gwithout atrailer.
Th ev ehicle/ trailer combination:
R is heavier
R is restricted in its acceleration and gradi-
ent-climbin gcapability
R has an increased braking distance
R is affected more by stron gcrosswinds
R demand smore sensitive steering
R has alarger turnin gcircle
This could impair the handling charac teris-
tics. Adapt your styl eofdriving accordingly.
Maintain asafe distance. Drive carefully.
When towing atrailer, alw aysa djust your
speed to the current road and weather con-
ditions. Do not exceed the maximum permis-
sible speed for your vehicle/trailer combina-
tion.
General notes !
Use adrawbar noseweigh tasc lose as
possible to the maximum permissible nose-
weight. Do not use anoseweight of less than 50kg, otherwise the trailer ma
ycome
loose.
Not ethat the payload and the rea raxle load
are reduce dbythe actual payload.
i Chec kthe tyr epressures when towin ga
trailer. You will find the values in the tyre
pressure table in the fuel filler flap of the
vehicle (Y page 399).
You will find installation dimensions and loads
in the "Technical data" section
(Y page 432).
The maximum permissible trailer drawbar
noseweight on the ball coupling is 140 kg.
However, the actual noseweight must not
exceed the value given on the trailer tow hitch
or trailer identification plates .The lowest
weight applies.
Please not ethat when towing atrailer, PARK-
TRONIC (Y page 216) and Blind Spo tAssist
(Y page 238) ar eonly available with limita-
tions ,orn ot at all.
Driving tips i
Observ ethe information on ESP ®
trailer
stabilisation (Y page 67)and on pulling
away with atrailer. (Y page 162).
Vehicle swith the ON&OFFROAD pack-
age: select the trailer program (Y page 250)
with the off- road program selector wheel in
the centre console.
The maximum permissible spee dfor vehicle/
trailer combina tions depends on the type of
trailer .Befor ebeginning the journey, check
the trailer's document stosee what the max-
imu mpermitted speed is. Observ ethe legally
prescribed maximum speed in the relevant
country.
For cer tain Mercedes-Benz vehicles, the max-
imum permissible rear axle load is increased
when towing atrailer. See "Technica ldata" to
find out whethe rthis applies to your vehicle
(Y page 433). If you utilise any of the added
maximum rea raxle load whe ntowing atrailer,
th ev ehicle/ trailer combination may not
exceed amaximum spee dof100 km/h for 258
Towin
gatrailerDriving an dparking

W
X R
Adjusts the volume 8 R
Mute Bac
kbutton %
Press briefly:
R
Back
R Switch esoff LINGUATRONIC;
see the separate operating
instructi ons
R Hides displa ymessages/calls
up the last Trip men
ufunction
used
R Exits the telephone book/redial
memory %
Press and hold:
R
Call supt he standard display in
the Trip menu
Multifunction display
:
Time
; Permanent display: outside tem perature
or spee d(Ypage 280)
= Description field
? Menu bar A
Drive program (Y page 168)
B Transmission position (Y page 168)
X To sho wmenu bar ?:press the =
or ; button on the steerin gwheel.
Men ubar? disappears after afew seconds.
Text field =shows the selected men uor
submen uaswell as display messages.
i You can set the tim eusing the audi osys-
tem or COMAND Online; see the separate
operating instructions.
The followi ngmessage scan appear in the
multifunction display:
Xj Y ActiveParking Assist
(Y page 219)
¯ Cruise control (Y page 193)
LIM SPEEDTRONI
C(Ypage 19 6)
f DSR DSR (Y
page 251)
Ç Off-ro ad program (vehicles with-
out the ON&OFFROAD package)
(Y page 252)
Ç Off-road program (vehicles with
the ON&OFFROAD package)
(Y page 253)
LO WR ANGE LO
WR ANGE off-road gear
(Y page 254)
_ Adaptive Main-beam Assist
(Ypage 125)
À ATTENTION ASSIST
(Ypage 232)
¤ ECO start/stop function
(Ypage 163)
Ä SpeedLimit Assist
(Y page 233)
à Lane KeepingAssist
(Y page 24 0)
à ActiveLane Keepin gAssist
(Y page 24 5)
ë HOLD functio n(Ypage 21 1)
Ä Distancewarnin gfunction
(Y page 63) 270
Display
sand ope rationOn-board computer and displays

If the
Sensors deactivated messa
ge
appears, the radar senso rsystem is deacti-
vated.
X Check whether or not the radar sensor sys-
tem is permitted to be activated
(Y page 433).
X Switc honthe radar sensor system
(Y page 28 3).
Activating/deactivating distance warn-
ing function X
Press =or; on the steering wheel
to select the Assist. menu.
X Press 9or: to select Dist. warn‐
ing .
X Press the abutton.
The curren tselection is displayed.
X To activate/deac tivate: press the a
button again.
When the distanc ewarning function is acti-
vated, the multifunction display shows the
Ä symbol if the HOLD function is not acti-
vated (Y page 211).
Vehicles with Active Parking Assist: if
PARKTRONIC is activated and you are driving
at as peed under 35 km/h, the jActive
Parkin gAssist symbol is shown instead of the
Ä symbol ( Ypage 21 9).
Further information on the distance warning
function (Y page63).
Activating/deactivatin gPRE-SAFE ®
Brake PRE-SAFE
®
Brake is only available in vehicles
with DISTRONIC PLUS.
X Press =or; on the steering wheel
to select the Assist. menu.
X Pres sthe 9 or: button to select
PRE-SA FEBrake .X
Press the abutton.
The curren tselection is displayed.
X To activate/deac tivate: press the a
button again.
When PRE-SAFE ®
Brak eisa ctivated, the mul-
tifunction displa yshows the Äsymbol as
long as the HOL Dfunction is not activated
(Y page 211).
Vehicles with Active Parking Assist: if
PARKTRONIC is activated and you are driving
at as peed under 35 km/h, the jActive
Parkin gAssist symbol is shown instead of the
Ä symbol ( Ypage 21 9).
If the PRE-SA FEBrake: Sensors deacti‐ vated message appears
,the radar sensor
system is deactivated.
X Chec kwhether or not the radar sensor sys-
tem is permi tted to be activated
(Y page 43 3).
X Switch on the radar senso rsystem
(Y page 283).
For more information on PRE-SAFE ®
Brake,
see (Y page 68).
Activating/deactivating ATTENTION
ASSIST X
Press =or; on the stee ring wheel
to select the Assist. menu.
X Pres sthe 9 or: button to select
Attent ionA sst. X
Press the abutton.
The curren tselection is displayed.
X To activate/deac tivate: press the a
button again.
When ATTENTION ASSI STis activated, the
À symbol appears in the multifunction
display when the ignition is on.
For further information about ATTENTION
ASSIST, see (Y page 232).278
Menus and submenusOn-boar
dcomputer and displays

When you are close to radi
otelescope facili-
ties, the rada rsensor system will be deacti-
vated automatically.
The following system sare switche doff when
th er adar senso rsystem is deactivated:
R DISTRONIC PLUS (Y page 198)
R BAS PLUS (Y page 62)
R PRE-SAFE ®
Brak e(Ypage 68)
R Blin dSpot Assist (Y page 238)
R Active Blin dSpot Assist (Y page 242)
Heating submenu Auxiliary heating dep
arture time G
WARNING
Exhaus tfumes are produced when the auxili-
ary heating is in operation. Inhaling the se
exhaus tfumes can be poisonous. You should
therefor eswitch off th eauxiliar yheating in
confine dspaces without an extraction sys-
tem, e.g .agarage. G
WARNING
When operating the auxiliary heating parts of
the vehicle can get very hot. Make sure that
the exhaust system does not under any cir-
cumstances come into contact with easily
ignitable material such as dry grass or fuels.
The material could otherwise ignite and set
the vehicle alight. Choos eyour parkin gspot
accordingly.
Operating the auxiliary heating is thus pro-
hibited at fillin gstations or when your vehicle
is being refuelled .You must therefor eswitch
off the auxiliary heating at filling stations.
! Operating the auxiliary heating/ventila-
tion draws on the vehicle battery. After you
have heated or ventilated the vehicle a
maximum of two times, drive for alonger
distance.
This func tion is only available on vehicles with
auxiliary heatin g(Ypage 148). In the
Heating submenu, you can select a
stored departure tim eorchange adeparture
time.
The auxiliary heatin gtimer func tion calcu-
lates the switch-on tim eaccording to the out-
sid etemperatur esothat the vehicle is pre-
heate dbyt he departur etime. When the
departur etime is reached, the auxiliary heat-
ing continues to heat for afurther five
minutes and then switches off. The auxiliary
heating adopts the THERMATI Cor
THERMOTRONI Ctemperature setting.
You can switc hoff th eauxiliary heating by
using the remot econtrol or the auxiliar yheat-
ing button on the centre console.
i Swit chthe auxiliary heating on regularly
once amonthfor about ten minutes.
Selecting th edepartur etime or deactivat-
ing aselected depa rtur et ime
X Press the =or; button on the steer-
ing wheel to select the Settings menu.
X Press the :or9 button to select the
Heating submenu.
X Press ato confirm.
You will see the selected setting.
X Press ato confirm.
X Press the :or9 button to select
one of the three departur etimes or Timer off (no timer active).
X Press ato confirm.
If ad eparture tim eisselected, the yellow
indicator lam plights up on the auxiliary
heating button.
Changing the depa rtur et ime
X Press the =or; button on the steer-
ing wheel to select the Settings menu.
X Press the :or9 button to select the
Heating submenu.
X Press ato confirm.
You will see the selected setting.
X Press ato confirm. 284
Menus and submenusOn-board computer and displays

Displa
ymessages Possible causes/consequences and
M Solutions
Blind Spot Assis
torActive Blind Spo tAssist is temporarily inop-
erative. Possible causes:
R the sensors are dirty.
R the function is impaired due to heavy rain or snow.
R the radar senso rsystem is outside the operating temperature
range.
R the radar sensor syste mistemporarily inoperative, e.g. due to
electromagneti cradiation emitted by nearby TV or radio sta-
tions or other sources of electromagnetic radiation.
The yellow 9indicator lamps also light up in the exterior mir-
rors.
When the causes listed above no longer apply ,the displa ymes-
sage goes out.
Blin dSpot Assist or Active Blin dSpot Assist is operational again.
If the display message does not disappear:
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Secure the vehicle against rollin gaway (Y page 181).
X Clean the sensors (Y page 370).
X Restart the engine. Blin
dSpot Assist inoperative
Active Blind Spot
Assist inoperative Blind Spot Assist or Active Blind Spot Assist is faulty.
Th
ey ellow 9indicator lamps also light up in the exterior mir-
rors.
X Visit aqualified specialist workshop. Park Assist cancel‐
led The driver'
sdoor is open and the driver's seat belt has not been
fastened.
X Repeat the parkin gprocess wit hthe seat belt fastened and the
driver's door closed. You hav
einadvertently touched the multifunction steerin gwheel
while steerin gintervention was active.
X While steerin gintervention is active, make sure not to touch the
multifunction steerin gwheel. The vehicle has star
tedtos kid and ESP ®
has intervened.
X Use Active Parking Assist again later (Y page 219).312
Display messagesOn-board computer and displays

Displa
ymessages Possible causes/consequences and
M Solutions
Pa
rk Assist inoper‐
ative Yo
uh avej ustc arrie doutalarg enumber of turning or parking
manoeuvres.
Active Parking Assist will become available again after approx-
imately ten minutes (Y page 219).
X Pull over and stop the vehicle safel yassoon as possible ,paying
attention to road and traffic conditions.
X Switch off and restart the engine.
If the display message continues to be displayed:
X Visit aqualified specialist workshop. PARKTRONI
Cisfaulty.
X Visit aqualified specialist workshop. Park Assist
switched off The vehicle is parked.
Awarning ton ealso sounds.
The display message disappear sautomatically. DI
STRONIC PLU Soff DISTRONIC PLUS ha
sbeen deactivate d(Ypage 198).
If it was deactivate dautomatically, awarning ton ealso sounds. DI
STRONIC PLUS available again DISTRONIC PLUS is operational agai
nafter having been tempo-
rarily unavailabl e. Youcan now reactivat eDISTRONIC PLUS
(Y page 198). DISTRONIC PLUS cur‐
rently unavailable
See Owner's Manual DISTRONIC PLUS is temporarily inoperative. Possible causes:
R thef unction is impaired due to heavy rain or snow.
R the sensors in the radiator trim and in the bumpers are dirty.
R the radar senso rsystem is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radio sta-
tions or othe rsources of electromagnetic radiation.
R the system is outside the operatin gtemperature range.
R the on-boar dvoltage is too low.
Aw arning ton ealso sounds.
When th ecauses listed above no longer apply, the display mes-
sage goes out.
DISTRONI Cisoperational again.
If th edisplay message does no tdisappear:
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Secure the vehicle against rollin gaway (Y page 181).
X Clean the sensors in the radiator trim and in the bumpers
(Y page 370).
X Restar tthe engine. Displa
ymessages
313On-board compu tera nd displays Z

C
Warning triangle
D Wheel bolts
E Towing eye
X Lif tthe luggage compar tment floor up
(Y page 344). Flat ty
re Prep
aring the vehicle
Your vehicle may be equipped with:
R MOExtended tyres (tyres with run -flat char-
acteristics) (Y page 378)
R aT IREFIT kit (Y page 379)
R an emergency spare whee l(only for cer tain
countries) (Y page 414)
Information on changing/fitting awheel
(Y page 404).
Vehicle preparation is not necessar yonvehi-
cles with MOExtended tyres.
X Stop the vehicle as far away as possible
from traffic, on solid, non-slipper yand level
ground.
X Switch on the hazard warning lamps.
X Engag ethe electric parkin gbrake man-
ually.
X Bring th efront wheels into the straight-
ahead position.
X Move the DIRECT SELECT leve rtoP.
X Vehicle swith the ON&OFFROAD pack-
age: makesure that highway level is selec-
ted (Y page 207).
X Switch off the engine.
X Vehicles without KEYLESS-GO: remove
the key from the ignition lock.
X Vehicles with KEYLESS-GO: open the
driver' sdoor.
The on-boar delectronic shave status 0,
which is the same as the key having been
removed.
X Vehicles with KEYLESS-GO: remove the
Start/Stop button from the ignition lock
(Y page 159). X
All occupants must leave the vehicle. Make
sure that they are not endangered as they
do so.
X Make sure that no one is near the danger
area while awheel is being changed. Any-
one who is not directly assisting in the
wheel change should, for example, stand
behind the barrier.
X Get out of the vehicle. Pay attention to traf-
fic condition swhen doing so.
X Close the driver's door.
X Plac ethe warnin gtriangl easuitable dis-
tance away (Y page 376). Observe legal
requirements.
X Unload heavy luggage.
i Only operate the tyre inflation compres-
sor using a12Vs ocket,even if the ignition
is turned off (Y page 350).
An emergenc ycut-off ensures that the on-
board voltage does not drop too low. If the
on-board voltage is too low, the power to
the sockets is automatically cut. This
ensures that there is sufficient power to
start the engine. MOExtended tyres (tyres with run-flat
characteristics)
G
WARNING
When driving in emergenc ymode, the driving
characteristic sdeteriorate, e.g. when cor ner-
ing, accelerating quickly and when braking.
There is arisk of accident.
Do not exceed the stated maximum speed.
Avoid abrupt steering and drivin gmanoeu-
vres, and driving over obstacles (kerbs, pot-
holes ,off-road) .This applies in particular to a
laden vehicle.
Sto pdriving in emergency mod eif:
R you hear banging noises.
R the vehicl estart stos hake.
R you see smok eand smell rubber. 378
Flat tyreBreakdown assistance