2012 MERCEDES-BENZ GL SUV park assist

X
Release the brak epedal.
X Carefully depress th eaccele rator pedal.
The electric parkin gbrake (Y page 182) is
automaticall yreleased.
The red !indicator lam pinthe instru-
men tcluster goes out.
i It is only possible to shift the transmission
from position Pto the desired position if
you depress the brake pedal. Only then is
the parkin glock released. If the brake
pedal is not depressed, the DIRECT SELECT
leve rcan still be moved but the parkin glock
remains engaged.
i The vehicle lock scentrally onc eyou have
pulled away .The lockin gknobs in the doors
drop down.
You can open the doors from the inside at
any time.
You can also deactivat ethe automatic lock-
ing featur e(Ypage 28 3).
i Upshif tstake place at higher engine
speeds after acold star t.This helps the
catalytic converter to reach its operating
temperature mor equickly.
Pullin gaway with atrailer To ensure that you do not roll backwards
when pulling away on an uphill slope, engage
the electric parking brake.
X
Press and hol dhandle :.
The electric parking brake continues to
brake and prevent the vehicle from rolling
backwards. The red
!indicator lamp in the instru-
ment cluster remains on.
X Depress the accelerator pedal.
X As soon as the vehicle/trailer combination
is held by the driving force of the engine,
release lever :.
The electric parking brake is released.
The red !indicator lamp in the instru-
ment cluster goes out.
Hill star tassist G
WARNING
Af teras hort time, hill star tassist will no lon-
ger brake your vehicle and it could rol laway.
There is arisk of an accident and injury.
Therefore, quickly move your foot from the
brake pedal to the accelerator pedal. Never
leave the vehicle when it is held by hill start
assist.
X Remove your foot from the brake pedal.
The vehicle is then held for about asecond.
X Pull away.
Hill star tassist helps you when pulling away
forwards or in reverse on an uphil lgradient.
It hold sthe vehicle for ashort tim eafter you
have removed you rfoot from the brake pedal.
This gives you enough tim etomove your foot
from the brake pedal to the accelerator pedal
and depress it befor ethe vehicle begin sto
roll.
Hil lstart assist will not function if:
R you are pulling away on alevel road or a
downhill gradien t.
R the transmission is in position N.
R the electric parking brake is engaged.
R ESP ®
is malfunctioning. 162
DrivingDrivin
gand pa rking

in effect achieved in the process reduces
the stoppin gdistanc ewhen drivin goff-
road. Th esteerabilit yofthe vehi cleisc on-
siderably redu cedift he wheels lock. Driving systems
Cruise cont
rol
Important safety notes G
WARNING
Do not change down for additional engine
braking on aslipper yroad surface. This could
cause the driv ewheels to lose their grip and
the vehi clec ould skid. G
WAR
NING
Cruise control cannot tak eaccount of road
and traffic conditions.
Alway spay attention to traffic conditions
even when cruis econtrol is activa ted.
Cruise control is only an aid designed to assist
driving. You are responsible for the vehicle's
speed and for braking in good time. G
WAR
NING
Do not use cruise control
R in traffic conditions that do not allow you to
drive at aconstan tspeed (e.g. heavy tra ffic
or winding roads). You may otherwise
cause an accident.
R on slippery roads. The drive wheels may
lose their grip when brakin goraccelerating
and the vehicle may skid.
R whe nther eisl ow visibility ,e.g. due to fog,
heavy rain or snow.
General notes Cruis
econtr ol maintains aconstan troad
speed for you. It brakes automatically in order
to avoid exceeding the set speed. On long and
steep downhil lgradients, especiall yifthe
vehicle is laden or towing atrailer, yo umust
select shift range 1,2or 3in good time. By doing so, you will make use of the braking
effec
tofthe engine. This relieves the load on
the brake system and prevents the brakes
from overheating and wearing too quickly.
Use cruise con trolonly if road and traffic con-
ditions make it appropriate to maintain a
steady speed for aprolonged period. Yo ucan
store any road spee dabove 30 km/h.
Cruise contro llever :
To activate or increase speed
; LIMi ndicato rlamp
= To activate at the current speed/last
stored speed
? To activate or reduce speed
A To switch between cruise control and var-
iable SPEEDTRONIC
B To deactivate cruise control
You can operate cruise control and variable
SPEEDTRONIC with the cruise control lever.
X To switch between variable SPEED-
TRONIC and cruise control: press the
cruise control lever in the direction of arrow
A.
LIM indicator lamp ;on the cruise control
lever indicates which function you have selec-
ted:
R LIM indicator lamp ; off:
cruise control
is selected.
R LIM indicator lamp ; on:
variable
SPEEDTRONIC is selected.
When you activate cruise control, the stored
spee diss hown in the multifunction display Driving systems
193Driving and parking Z

G
WARNING
DISTRONIC PLUS canno ttake account of road
and traffic conditions. If DISTRONI Cdoes not
recognise or no longer recognises the vehicle
in front, do not activate DISTRONIC or, if it is
alr eady active, deactivate it. This is especially
the case:
R befor ecorners
R on filter lanes
R when changing to alane with faster moving
traffic
R in comple xdriving situations or where lanes
are diverte d,e.g. at roadworks on amotor-
way
DISTRONIC PLU Sotherwise maintains the
current spe ed setbyyou or accelerates up to
the set speed.
DISTRONIC PLU Scannot take account of
weather conditions. Deactivate, or do not
activate, DISTRONI CPLUS:
R if th eroads are slippery, snow-covered or
icy .The wheels coul dlose their grip when
brakin goraccelerating .The vehicle could
star ttos kid.
R if the sensors are dirty or there is poo rvis-
ibility, e.g. due to snow, rain or fog. Dis-
tance control may be impaired.
Always pay attention to traffic conditions
even when DISTRONIC PLU Sisactivate d.
Otherwise, you ma yfail to recognise dangers
in time, caus eanaccident and injure yourself
and others. G
WARNING
DISTRONIC PLUS brake syourvehicle up to a
maximu mof4m /s2
depending on its speed.
This corresponds to approximately 40% of
your vehicle's maximum braking power. You
must als oapply the brakes yourself if this
braking power is not sufficient.
If DISTRONI CPLUS detect sarisk of collision
with avehicle in front, an intermit tent warning
tone sounds. In addition, the ·distance
warning lamp in the instrument cluste rlights
up. Brak etoavoidac ollision. G
WAR
NING
The vehicle can be braked when DISTRONIC
PLUS is activated. For this reason, deactivate
DISTRONIC PLUS if the vehicle is to be set in
motion by othe rmeans (e.g. in acar wash or
by towing).
The radar senso rsystem is switched off auto-
matically in the vicinity of radio teles cope
facilities (Y page 433).
If you want DISTRONIC PLUS to assist you,
the radar sensor syste mmust be activated
(Y page 283 )and operational.
General notes DISTRONIC PLUS regulates the speed and
automati
cally helps you maintain the dis-
tanc etot he vehicle detected in front. DI S-
TRONIC PLU Sbrake sautomatically so that
the set spee disnot exceeded.
On long and steep downhil lgradients, espe-
ciall yifthe vehicle is laden or towing atrailer,
yo um ust select shift range 1,2or 3in good
time. By doing so, you will make use of the
braking effec tofthe engine. This relieves the
load on the brake system and prevents the
brakes from overheating and wearing too
quickly.
If DI STRONIC PLUS detects aslower-moving
vehicle in front ,your vehicle is braked in order
to maintain the preset distance to the vehicle
in front.
If ther eisnov ehicle in front ,DISTRONIC
PLUS operate sinthe sam eway as cruise
control in the spee drange between
30 km/h and 200 km/h. If avehicle is driving
in fron tofyou, DI STRONIC operates in the
speed range betwee n0km/h and
200 km/h.
Do not us eDISTRONIC PLUS on roa dswith
steep gradients. Driving systems
199Drivinga nd parking Z

In th
eAssistanc emenu (Y page 277)of the
on-boar dcomputer ,you can select the dis-
tance display.
X Selec tthe Distance display function
usin gthe on-boar dcomputer .
In the Assistanc emenu of the on-boar dcom-
puter ,you can also activate or deactivate
PRE-SAFE ®
Brake (Y page 278).
Display when DISTRONIC PLUS is activa-
ted Distanc
edisplay with DISTRONIC PLUS activated
in the multif unction display
: DISTRONIC PLUS activated
; Own vehicle
= Specifie dminimum distance to the vehi-
cle in front; adjustable
? Vehicle in front, if detected
In the Assistance menu (Y page 277)of the
on-board computer ,you can select the dis-
tance display.
X Selec tthe Distance display function
usin gthe on-boar dcomputer .
You will see the stored speed for about five
seconds when you activat eDISTRONIC PLU S.
Tip sfor driving with DISTRONIC PLUS General notes
Pay particular attention in the followin
gtraffic
situatio ns:
R Cornering, going int oand coming out of a
bend
R Vehicles travelli ngon adifferen tline R
Other vehicles changing lane
R Nar rowv ehicles
R Obstruc tions and stationar yvehicles
R Crossing vehicles
In such situations, brak eifnecessary. DIS-
TRONI CPLUS is then deactivated.
Cornering ,going into and coming out of a
bend The ability of DISTRONIC PLUS to detect vehi-
cles when cornering is limited. Your vehicle
may brake unexpectedly or late.
Vehicles travelling on
adifferent line DISTRONIC PLU
Smay not detec tvehicles
travelling on adifferent line. The distance to
the vehicle in fron twill be too short. 206
Drivin
gsystemsDrivin gand parking

HOL
Dfunction
Gen eral notes Th
eH OLD function ca nassist the driver in the
foll owing situations:
R when pulling away, especially on steep
slopes
R when manoeuvrin gonsteep slopes
R when waiting in traffic
The vehicle is kept stationary without the
driver having to depress the brake pedal.
The braking effect is cancelled and the HOLD
function is deactivated when you depress the
accelerator peda ltop ull away.
i Do not use the HOLD function when driv-
ing off-road, on steep downhill or uphill
inclines or on aslippery or loose surface.
Under such circumstances, the HOLD func-
tion may not be able to keep the vehicle
stationary.
Activation conditions You can activate the HOLD func
tion if:
R the vehicle is stationary.
R the engin eisrunning or if it has been auto-
matically switched off by the ECO start/
stop function.
R the driver' sdoor is closed or if your seat
belt is fastened.
R the electric parkin gbrake is released.
R thet ransmission is in position D,Ror N.
R DISTRONIC PLUS is deactivated.
Activatin gthe HOL Dfunction G
WARNING
Th ev ehicle' sbrake sare applied when the
HOLD functio nisactivated. For thi sreason,
deactivat ethe HOL Dfunction if the vehicle is
to be set in motion by other means (e.g. in a
car wash or by towing). X
Make sure that the activation conditions
are met.
X Depress the brake pedal.
X Quickly depres sthe brake pedal further
until ë appears in the multifunction dis-
play.
The HOL Dfunction is activated. You can
release the brake pedal.
i If depressing the brake pedal the first
time does not activate the HOLD function,
wait briefly and then try again.
Deactivating the HOLD function G
WARNING
Never get out of the vehicle when the HOLD
function is activated.
The HOLD function must never be operated
or deactivated by apassenger or from outside
the vehicle.
The HOLD function does not replace the elec-
tric parking brake and must not be used for
parking.
The braking effect of the HOLD function is
cancelled and the vehicle could roll away if:
R the HOLD function is deactivated by
depressing the accelerator pedal or the
brake pedal.
R there is amalfunction in the system or an
interruption in the power supply ,e.g. bat-
tery failure.
R the electrical system in the engine com-
partment, the battery or the fuses are tam-
pere dwith.
R the battery is disconnected.
If you leave the vehicle or park it, deactivate
the HOLD func tion and secur ethe vehicle
against rolling away.
The HOL Dfunction is deactivated automati-
cally if:
R you accelerate and the transmission is in
position Dor R.
R you shift the transmission to position P. Driving systems
211Drivingand pa rking Z

One or mor
esegments light up as the vehicle
approaches an obstacle, dependin gonthe
vehicle' sdistance from the obstacle.
From the:
R sixth segment onwards, you will hear an
intermittent warnin gtone for approx-
imately two seconds.
R seventh segmen tonwards ,you will hear a
warnin gtone for approximately two sec-
onds. This indicates that you have now
reached the minimu mdistance.
Deactivating/activating PARKTRONIC :
Indicator lamp
; To deactivate/activate PARKTRONIC
If indicator lamp :lights up, PARKTRONIC is
deactivated. Active Park Assist is then also
deactivated.
i PARKTRONIC is automatically activated
when you turn the key to position 2in the
ignition lock.
Towing atrailer !
Foldint he ball coupling if the trailer tow
hitc hisn ot required. PARKTRONIC meas-
ures the min imumdetect ionr ange to an
obstacle from the bumper, no tthe ball cou-
pling.
PARKTRONIC is deactivated for the rea rarea
when yo uestablish an electrica lconnection
between your vehicle and atrailer. 218
Dri
ving systemsDriving and pa rking

Problems wit
hPARKTRONIC Problem Possible causes/consequences and
M Solutions
Only the red segments
in the PARKTRONIC
warning display
sare lit.
Yo ua lso hear awarning
tone for approximately
two seconds.
PARKTRONIC is deacti-
vated after approx-
imately five seconds,
and the indicator lamp
in the PARKTRONIC
button lights up. PARKTRONIC has malfunctioned and has switched off.
X
If problems persist, have PARKTRONIC checked at aqualified
specialist workshop. Only the red segments
in the PARKTRONIC
warning display
sare lit.
PARKTRONIC is deacti-
vate dafter approx-
imatel yfive seconds. The PARKTRONIC sensors are dirty or there is interference.
X
Clean the PARKTRONIC sensors (Y page 370).
X Switc hthe ignition bac kon. The problem may be cause
dbyanexternal source of radio or
ultrasound waves.
X See if PARKTRONIC functions in adifferent location. Active Parking Assist
Important safet ynotes G
WARNING
Active Parkin gAssist is merely an aid and may
sometimes recommen dparking spaces that
are not suitable for parking. For example,
these might be spaces where parking is pro-
hibited ,driveways, unsuitabl esurfaces, etc.
Active Parking Assis tmeasures the parking
space as you driv epast it. Any later changes
to the parking space are not taken into
account. For instance, this may be the case
when the vehicle parked in front of or behind
the space changes its positio norwhen an
obstacle is moved int othe parkin gspace.
Active Parking Assist does not reliev eyou of
the responsibilit yofpaying attention. If you
rely solel yonA ctive Parkin gAssist, you could cause an acciden
tand injure yourself and oth-
ers.
You are always responsible for safety and
must continue to pay attention to your imme-
diate surroundings whe nparking and
manoeuvring. G
WARNING
Objects located above the heigh trange of
Active Parking Assis twill not be detected
when the parking space is measured. These
are not taken into account when the parking
procedure is calculated, e. g. overhanging
loads, tail sections or loading ramps of goods
vehicles. In some circumstances, Active Park-
ing Assist may therefor eguide you into the
parking space too early. This may lead to a
collision. For this reason, you should avoid
using Active Parking Assis tinsuch situations. Driving systems
219Drivingand pa rking Z

G
WARNING
Th ef ront of th evehicle will veer out in the
direction of the oncoming traffic during the
parking operation. In some cases the vehic le
wil lalsot ake you onto sections of the oncom-
ing lane during the parking procedure.
You are responsibl efor safet yatall times and
must pay attention to any road users
approaching or passing. Stop the vehicle if
necessary or cancel the Activ eParking Assist
parking procedure. G
WARNING
Make sure that no persons or animals are in
the manoeuvring range. Otherwise, they
coul dbei njured.
! If unavoidable ,you should driv eover
obstacles such as kerb sslowly and not at
as har pangle .Otherwi se,you ma ydamage
the wheels or tyre s.
Activ eParking Ass isti sane lectroni cparking
aid with ultrasound. Ultrasoun disused to
mea surethe road on bothsides of th evehicle.
As uitable parking space is indicated by the
parking symbol. Activ esteering intervention
can assis tyou during parking. You ma yalso
use PARKTRONIC (Y page 216). When PARK-
TRONIC is switched off, Active Parking Assist
is also unavailable.
Use Active Parking Assist for parkin gspaces:
R that are parallel to the direction of travel
R that are on straight roads, not bends
R that are on the same level as the road, e.g.
not on the pavement
Parking tips:
R on narrow roads, driv easclosely as possi-
ble past the parkin gspace.
R parking spaces that are littered, overgrown
or partially occupied by trailer drawbars
might be identified incor rectly or not at all.
R snowfall or heavy rain may lea dtoap arking
space being measured inaccurately. R
pay attention to the PARKTRONIC
(Y page 217 )warning message sduring the
parking procedure.
R at any time, you can intervene in the steer-
ing procedure to correc tit. Active Parking
Assist will then be cancelled.
R when transporting aload which protrudes
from your vehicle, you should not use
Active Parkin gAssist.
R when snow chains or an emergenc yspare
wheel are fit ted, you should not use Active
Parking Assist here either.
R mak esure that the tyre pressures are
always correct. This has adirec tinfluence
on the parking characteristics of the vehi-
cle.
R the wa yyourv ehicle is positioned in the
parking space after parking is dependent
on various factor s. Theseinclude the posi-
tion and shape of the vehicles parked in
front and behind it and the conditions of the
location. It may be the case that Active
Parking Assist guides you too far into a
parking space, or not far enoug hinto it. In
some cases, it may also lead you across or
onto the kerb. If necessary, you should can-
cel the parking procedure with Active Park-
ing Assist.
R you can also engage forward gea rprema-
turely. Th evehicle redirects and does not
driv easf ar into the parking space. Should
ag ear be changed too earl ytoa chieve a
sensible parkin gposition ,the parkin gpro-
cedure will be cancelled.
Detectin gparking spaces :
Detected parking space on the left
; Parking symbol
= Detected parking space on the right 220
Driving systemsDri
ving and parking