2012 MERCEDES-BENZ GL SUV change time

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

X
Shift the transmissio ntoposition Dwhile
the vehicle is stationary.
Active Parkin gAssist immediately steer sin
the othe rdirection.
The Park Assist active Accelerate and brake Observe surroundings mes-
sage appears in the multifunction display.
i You will achieve the best results by wait-
ing for the steerin gprocedure to complete
before pulling awa y.
X Drive forwards and be ready to brake at all
times.
X Stop as soo nasPARKTRONIC sounds the
continuous warning tone, if not before.
The ParkAssist active Select R Observe surroundings message appears in
th em ultifunction display.
Further transmissio nshift sm ay be neces-
sary.
As soon as the parking procedure is com-
plete, the Park Assist switched off mes-
sage appears in the multifunc tion display.
PARKTRONIC is still available.
X Manoeuvr eifnecessary.
X Alway sobserv ethe warnin gmessages dis-
played by PARKTRONI C(Ypage 217).
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 the way your vehicle is positioned in the
parking space after parking is dependent
on various factors. Thes einclude the posi-
tion and shape of the vehicles parked in
front and behind it and the condi tions of the
location .Insome cases, Active Parking
Assist ma yguide you too far into aparking
space, or not far enough into it. In some
cases, it may also lead you across or onto
the kerb. If necessary, you should cancel the parking procedure with Active Parking
Assis
t.
R you can also engag eforward gear prema-
turely. The vehicle redirects and does not
drive as far int othe parkin gspace. Should
ag ear be changed too early, the parking
procedure will be cancelled. Asensible
parkin gposition can no longer be achieved
from this position.
Exiting aparkin gspace G
WARNING
Active Parking Assist doe snot monitor street
traffic .Insome cases, the vehicle will also
tak eyou onto section softhe oncoming lane
when exitin gaparking space.
You are responsible for safety at all times and
must pay attention to any road users
approaching or passing. Stop the vehicle if
necessary or cancel Active Parking Assis t.
Activ eParking Assis tcan only assis tyou with
exitin gaparking space if you have parked the
vehicle using Active Parking Assis t.
X Start the engine.
X Switch on the turn signal on the side facing
the street.
X Shift the transmission to position Dor R.
The Star tPark Assist? Yes: OK No: %
message appears in th emultifunction
display.
X To cancel the procedure: press the
% button on the multifunction steering
wheel or pull away.
or
X To exit aparkin gspace usin gActive
Parking Assist: press theabutton on
the multifunction steering wheel.
The Park Assis tactive Accelerate and brake Observe surroundings mes-
sage appear sinthe multifuncti on display.
X Releas ethe multifunction steeri ngwheel.
X Revers ethe vehi cleo rdrive forwards, being
ready to brake at all times .Donot exceed
am aximum spee dofapproximately 222
Driving systemsDriving and parking

R
if you are cur rently using COM ANDOnline
or ma kingatelephon ecall with it
R if the tim ehas been set incorrectly
R in active drivin gsituations, such as when
you change lanes or change your speed
Warning and display messages in the
multifunction display X
Activate ATTE NTION ASSIS Tusing the on-
boar dcomputer (Y page 278).
Symbol :appears in the multifunction
display.
X The Attentio nA ssist: Take a break! mess
agea ppears in th emulti-
function display. If necessary, takea
break.
X Press the aor% button to confirm
the message.
If ATTENTION ASSI STis active, you will be
warne dnosooner than 20 minutes after your
journey has begun. In additio ntothe message
shown in the multifunc tion display, you will
then hear an intermit tent warning tone twice.
On long journeys ,take regular breaks in good
time to allow yourself to rest properly. If you
do not take abrea kand ATTENTION ASSIST
stil ldetect sincreasing lapses in concentra-
tion, you will be warned agai nafter
15 minutes at th eearliest.
ATTENTION ASSIST is reset and starts
assessing your tiredness again when you con-
tinue your journey if:
R you switch off the engine.
R you take off your seat belt and open the
driver' sdoor, e.g. for achange of driver sor
to take abreak. Speed Limit Assist
Important safety notes G
WARNING
Speed Limit Assis tiso nly an aid and may
detect speed limit signs incorrectly or not at
all.
The system may be impaired or may not func-
tion if:
R there is poo rvisibility, e.g. due to snow,
rain, fog or spray.
R there is glare, e.g. from the sun or from
oncoming traffic.
R the windscreen is dirty, misted up or cov-
ered, for instance by asticker, in the vicinity
of the camera.
R the traffic signs are covered, for instance
by dirt, snow or trees.
R the traffic signs are poorly illuminated.
R there are ambiguous traffic signs, for
instance near roadworks or on multi-lane
roads.
Traffic signs alway shave priority over the
Speed Limit Assis tdisplay .Speed Limit Assist
cannot detec troad and traffic conditions. It is
not asubstitute for atten tivedriving.
Alway spay atten tion to traffic condition sand
your surroundings. Otherwise ,you may fai lto
recognise dangers in time ,cause an accident
and injure yourself and others.
General notes Driving systems
233Drivingand parking Z

change lane, yo
uwilla lsor eceive an optical
and audible collisio nwarning. For monitoring,
Active Blin dSpot Assist uses sensors in the
rear bumper.
For Blin dSpot Assist to assist you when driv-
ing, the rada rsensor system must be activa-
ted (Y page 283) and operational.
The rada rsensor system is switched off auto-
maticall yinthe vicinit yofradio telescope
facilities (Y page 433).
Monitoring range of the sensors G
WARNING
Blind Spot Assist monitors certain areas in the
immediate vicinit yofyour vehicle. Vehicles
that approach and driv epast at high speeds
are not detected. There is no display and no
warning.
If the lanes are very wide, it may not be pos-
sible to monitor the complete width of the
neighbouring lane. For this reason, vehicles in
the next lane may not be detected, especially
if they are driving in astaggered formation in
different lanes .This ma ybethe case if vehi-
cles ar edriving at th eedge of their lane that
is furthest away from your vehicle.
Alway spay attention to traffic conditions and
your surroundings. Otherwise ,you may fai lto
recognis edangers in time, cause an accident
and injure yourself and others. Blind Spot Assis
tmonitors the area up to
3. 0mb ehind your vehicle and direc tlyn extto
your vehicle, as shown in the diagram.
If the lanes are narrow, vehicles drivin gint he
lan ebeyond th elan en ext to your vehicle may
be indicated, especially if th evehicles are not
drivin gint he midd le of their lane. This may
be th ecase if there are vehicles at th eedge
of their lan eneares tyour vehicle.
Due to th enature of th esystem:
R warnings may be issued in error when driv-
ing close to crash barriers or similar solid
lane borders.
R warnings may be interrupted when driving
alongside long vehicles, for example lor-
ries, for aprolonged time.
Th et wo radar sensors for Blin dSpot Assist
are integrated int othe sides of the rear
bumper .Make sure that the bumper is free of
dirt, ice or slush in the vicinity of the sensors.
The sensor smust not be covered, for exam-
ple by cycle racks or overhanging loads .Fol-
lowin gasevereimpact or in th eevent of dam-
ag etot he bumpers, hav ethe function of the
sensor schecked at aqualified special ist
workshop. Blind Spot Assist may otherwise
not work properly.
Indicator and warning display :
Yello windicato rlamp/red warning lamp
If Blind Spot Assis tiss witched on, indicator
lamp :in the exterior mirrors lights up yel-
low up to aspeed of 30 km/h. At speeds
above 30 km/h, the indicator lamp goes out
and Blin dSpot Assist is operational. Driving systems
239Driving and parking Z

R
the lane markings on the roa dare unclear,
e.g. near roadworks.
R the lane markings change quickly, e.g.
lanes branc hoff, cros sone another or
merge.
R the road is narrow and winding.
Lane Keeping Assist cannot detect road and
traffic conditions. It is not asubstitute for
attentive driving. You are responsible for the
vehicle's speed, braking in good time, and
steering correctly. Always adapt your driving
style to suit the prevailing road and weather
conditions. Always pay attention to traffic
conditions and your surroundings. Otherwise,
you may fail to recognise dangers in time,
cause an accident and injure yourself and oth-
er s.
General notes :
Lane Keeping Assist camera
Lane Keeping Assist mon itors the area in
front of your vehicle by means of acamera at
the top of the windscre en.LaneK eeping
Assist detect slan em arking sont he road and
warns you before you leave your lane unin-
tentionally.
If you select km on the on-board com
puterin
the Display unit Speed-/odometer func-
tio n(Ypage 280), Lane Keeping Assist is
active starting at aspeed of 60 km/ h.If the
miles disp
layu nitiss elected, the assistance
range begins at 40 mph.
Aw arning may be given if afront wheel
passes ove ralane marking. It will warn you by means of intermittent vibration in the
steering wheel for up to 1.5 seconds.
Activating Lane Keeping Assist
X
Switch on Active Lane Keeping Assis tusing
the on-boar dcomputer ;todoso, select
Standard or
Adaptive (Y
page 279).
Symbol :appears in the multifunction
display.
If you drive at speeds abov e60km/h and
lan em arkings are detected, symbol :is
shown in green. Lane Keeping Assis tis
ready for use.
Standard
If Standard is selected, no warning vibration
occurs if:
R yo uh ave switched on the turn signals .In
this case, the warnings are suppressed for
ac ertain period of time.
R ad riving safet ysystem intervenes, such as
ABS ,BAS or ESP ®
.
Adaptive
If Adaptive is selected
,nowarning vibration
occurs if:
R you have switched on the turn signals .In
this case, the warnings are suppressed for
ac ertain period of time.
R ad riving safet ysystem intervenes, such as
ABS ,BAS or ESP ®
.
R you accelerate hard, e.g. kickdown.
R you brake hard.
R you stee ractively, e.g .swerve to avoid an
obstacle or change lane quickly.
R you cut the corner on ashar pbend.
In order that you are warned only when nec-
essary and in good tim eifyou cross the lane Driving systems
241Driving and parking Z

marking
,the system recognises certai ncon-
ditions and warns you accordingly.
The warning vibration occur searlier if:
R you approach the outer lane markin gona
bend.
R the road has ver ywidel anes ,e.g. am otor-
way.
R the system recognises solid lane markings.
The warning vibration occur slater if:
R the road has narrow lanes.
R you cut the corner on abend. Active Driving Assistance package
General notes The Active Drivin
gAssistanc epackag econ-
sists of DISTRONIC PLU S(Ypa ge198), Active
Blind Spo tAssist (Y page 242) and Active
Lane Keeping Assist (Y page 246).
Active Blind Spot Assist Importan
tsafety notes G
WARNING
Active Blind Spo tAssist is only an aid and may
detect vehicles/obstacles incorrectly or not
at all.
The system ma ybeimpaired or may not func-
tio nif:
R there is po orvisibility ,e.g. due to snow,
rain, fog or spray.
R the rear and/or front sensors are dirty.
Active Blind Spot Assist may not detect nar-
row vehi cles, such as motorcycles or bicycles,
or only detect the mtoo late. It can notd etect
vehicles which are overtaken at asmall dis-
tance and then enter th eblind spot area.
Active Blind Spot Assist cannot detect road
and traffic conditions. It is not asubstitute for
attentive driving. You are responsible for the
vehicle's speed, braking in good time, and
steering correctly. Always adapt your driving
style to suit the prevailing road and weather conditions. Always pay attention to traffic
conditions and your surroundings. Otherwise,
you may fail to recognise dangers in time,
cause an accident and injure yourself and oth-
ers.
The radar sensor syste misautomatically
deactivated near radio telescope facilities
(Y page 433).
For Active Blind Spot Assis ttoassist you
when driving, the radar sensor syste mmust
be activated (Y page 283)and operational.
General notes
Active Blind Spot Assist use saradar sensor
system to monitor the area to the sides of
your vehicle which are behind the driver. A
warning display in the exterior mirrors draws
your attention to vehicles detected in the
monitored area. If you then switch on the cor-
responding turn signal to change lane, you
will also receive an optical and audible warn-
ing. If arisk of lateral collision is detected,
corrective brakin gmay help you avoid acol-
lision. To suppor tthe course- correcting brake
application ,Active Blind Spo tAssist uses the
forward-facin gradar senso rsystem. The free
space in the direction of travel is then evalu-
ated.
Active Blind Spot Assist supports you from a
speed of approximatel y30km/h.
Monitorin grange G
WARNING
Active Blin dSpot Assist monitors cer tain
areas in the immediate vicinit yofyour vehicle.
Vehicles that approach and driv epast at high
speeds are not detected. No visual nor audi-
ble warnings are emitted and the system does
not brake the vehicle to correc tyour course.
If the lanes are ver ywide, it may not be pos-
sible to monitor the complete width of the
neighbouring lane. For this reason, vehicles in
the next lane may not be detected, especially
if they are drivin ginastaggered formation.
Thi sm ay be the case if vehicles are driving at 242
Driving systemsDrivin
gand pa rking

The yellow indicator lam
pgoes out if reverse
gear is engaged. Active Blin dSpot Assist is
then no longer active.
The brightness of the indicator/warning
lamps is adjusted automatically accordin gto
the ambient light.
Visual and acoustic collision warning Whe
nyou switc honthe tur nsignals to
change lanes and avehicle is detected in the
side monitorin grange, you receive avisual
and acoustic collision warning. You then hear
ad ouble warnin gtonea nd red warning
lamp :flashes. If the turn signal remains on,
detected vehicles are indicated by the flash-
ing of red warning lamp :.There ar enofur-
ther warning tones.
Course-correcting brake application G
WARNING
Active Blind Spot Assis tiso nly an aid
designe dtoassist driving. It is not asubstitute
for attentive driving. Automatic braking by the
system may not always be sufficient to avoid
ac ollision .Insuch cases, you need to steer,
brake or accelerate yourself.
In very rare cases, the system may detect a
risk of collision where there is none and brake
in error near crash barriers or similar road
boundaries .Active Blind Spot Assist cannot
detect all traffic situations and road users.
Ensure at all times that there is sufficient lat-
eral distance betwee nyou and other road
users or obstacles. You can ,for example,
countersteer gentl yordepress the accelera- tor pedal at any tim
etocancel inappropriate
braking action.
You are responsible for the vehicle's speed,
correct steering and for braking in good time.
Always adapt your driving style to suit the
prevailing road and weather conditions.
Always pay attention to traffic conditions and
your surroundings. Otherwise ,you may fai lto
recognise dangers in time ,cause an accident
and injure yourself and others. If Active Blind Spot Assis
tdetect sarisk of a
lateral collision in the monitorin grange, a
course-correcting brake application is carried
out. This is designed to help you avoid acol-
lision.
If ac ourse-cor recting brake application
occurs ,red warning lamp :flashes in the
exterior mirror and adual warning tone
sounds .Inaddition, display ;appears in the
multifunction display.
The course-cor recting brake applicatio nis
available in the spee drange between
30 km/h and 200 km/h. 244
Driving systemsDriving and parking