2011 MERCEDES-BENZ M-CLASS SUV warning light

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 20 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 y20seconds. The PARKTRONI
Csensors are dirt yorthere is interference.
X Clean the PARKTRONI Csensors (Y page 327).
X Switch the ignition back on. The problem may be caused by an exter
nalsource of radio or
ultrasoun dwaves.
X See if PARKTRONIC functions in adifferent location. Active Parking Assist
Important safet ynotes Active Parking Assist is an electronic parking
aid with ultrasound. Ultrasound is used to
measure the road on both sides of the vehicle.
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 191). When PARK-
TRONIC is switched off, Active Parking Assist
is also unavailable. 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 insta nce,this ma ybethe case
when the vehicle parked in front of or behind
the space changes its position or when 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 accident and injure yourself and oth-
ers.
You are always responsible for safet yand
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 194
Drivin
gsystemsDrivin gand 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 parkin gresults
by waiting for the steerin gprocedure to
complete before moving forwards.
X Drive forward sand be ready to brake at all
times.
X Stop as soon as PARKTRONIC sounds the
continuou swarning tone, if not before.
The Park Assist active Select R Observe surroundings message appears in
the multifunc tion display.
X Further transmission shift smay 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 con tinues to be available.
X Manoeuvre if necessary.
X Always observe the warning message sdis-
played by PARKTRONI C(Ypage 192).
Cancell ingA ctive Parking Assist You can cancel Active Parking Assist at any
time.
X Stop the movemen tofthe multifunc tion
steerin gwheel or steer yourself.
Ac tive Parkin gAssist will be cancelled at
once. The Park Assist cancelled mes-
sage appears in the multifunc tion display.
or
X Press the PARKTRONIC button on the
cen trec onsole (Y page 192).
PARKTRONIC is switched off and Active
Parkin gAssist is immediately cancelled.
The Park Assist cancelled message
appears in the multifunc tion display. Active Parkin
gAssist is cancelled automati-
cally if:
R parkin gusing Ac tive Parkin gAssist is no
longe rpossible.
R you ar edriving faster than 10 km/h.
R aw heel spins and ESP ®
intervenes or fails.
The ä warnin glamp lights up in the
instrument cluster.
Aw arning ton esounds. The par king spa ce
sym boldisappear sand the ParkA ssist cancelled messag
eappear sinthe multi-
functio ndisplay.
When Activ eParking Assist is cancelled, you
must steer again yourself.
Towing atrailer For vehicles with
atrailer to whitch, the min-
imum length for parking spaces is slightly
increased.
If yo uhavea ttache datrailer to your vehicle,
yo us houl dnot us eActiv eParking Assist.
Once the electrica lconnection is established
between your vehicl eand the trailer, Active
Parking Assist is no longer available .PARK-
TRONIC is deactivated for the rear area. Reversin
gcamera
Important safety notes Th
er eversing camera is an optica lparking
and manoeuvring aid. It shows the area
behind your vehicle with guide lines in the
COMAND displ ay. G
WARNING
Make sure tha tnopersons or animals are in
the manoeuvring range. Otherwise, they
could be injured.
The reversing camera is in the handle on the
tailgate. Driving systems
197Drivingand park ing Z

:
Reversin gcamera
View through th ecamera Th
ea rea behind the vehicle is displaye dina
mirror-inverted manner, as in the rea r-view
mirror. G
WARNING
The reversin gcamera is only an aid and may
display obstacles in adistorted or incorrect
manner, or may no teven display them at all.
Th er eversing camera does not relieve you of
the responsibility to pay attention. The cam-
era cannot show objects:
R ver ynear to the rear bumper
R belo wthe rea rbumper
R that are located above the tailgate handle
recess
You are alway sresponsible for safet yand
must continue to pay attentio ntoyourimme-
di at es urroundings when parking and
manoeuvring. This applie stothe areas
behind, in front of and nex ttothe vehicle. You
coul dotherwise endang er yourself and oth-
ers. G
WARNING
Under the following circumstances, the
reversing camera will not function, or will
function in alimited manner:
R if the tailgate is open
R in heavy rain, snow or fog
R at night or in very dark places
R if the camer aisexposed to very brigh tlight R
if the area is lit by fluorescen tlight or LED
lighting (the display may flicker)
R if there is asudden change in temperature,
e.g. when driving into aheated garage in
winter
R if the camera lens is dirt yorobstruc ted
R if the rear of your vehicle is damaged. In this
event ,have the camera positio nand setting
checked at aqualified specialist workshop.
Mercedes-Benz recommends that you use
aM ercedes-Benz Servic eCentr efor this
purpose.
Do not use the reversin gcamera in these
types of situation. You could otherwise injure
others or damage objects and your vehicle
while you are parking.
Activating/deactivating the reversing
camera X
To activate: make sure that the key is in
position 2in the ignition lock.
X Make sure that the "Reversing camera"
function is selected in COMAND Online
(see the separate operating instructions for
COMAND).
X Engage reverse gear.
The area behind the vehicle is shown with
guide lines in the COMAND display. X
To change the function mode: using the
COMAND controller, select symbol :for
the "Reverse parking" function or sym-
bol ;for the "Coupling up atrailer" func- 198
Dri
ving systemsDriving and parking

tion. See the separate COMAND operating
instructi
ons.
The symbo lofthe selected function is high-
lighted.
To deactivate: the reversing camera is deac-
tivated if you:
R shift the transmission to position P
R drive forward ten metres
R shift the transmission from position Rto
anothe rposition (after 15 seconds)
R drive forwards at aspeed of over
10 km/h
Displays in the COMAN Ddisplay G
WARNING
Usin gthe reversing camera can be dangerous
if you ar ecolour-blin dorify our ability to dis-
tinguish colours is impaired.
Only use the reversin gcamera if you can see
and distinguis hbetween all the coloured
guide lines that are displayed by the reversing
camera in the COMAN Ddisplay. G
WARNING
Please note that objects not at ground level
may appea rtobefurther away than they
actually are. Thes einclude:
R the bumper of avehicle that is parked
behind your vehicle
R at railer drawbar
R theb all coupling of atrailer tow hitch
R thet ail-end of alorry
R slanted posts
The lines are only guides, not accurate meas-
urements of the distance to an obstacle.
Therefore, you should never pass the red line
when approachin ganobstacle. You could oth-
erwise cause an accident and injur eyourself
and others. :
Vehicle width includin gexterior mirrors
; Vehicl ewidth including wheel extremities
= Yellow guide line at adistance of approx-
imately 4.0 mfrom th erear area
? Red lane of vehicle width at curren tsteer-
ing whee langle (dynamic)
A Yellow lane of tyres at current steering
wheel angle (dynamic)
B Bumper
C Red guid eline at adistance of approx-
imately 0.2 5mfrom th erear area
D Yellow guide line at adistance of approx-
imately 1.0 mfrom th erear area
E White lane of vehicle width with steering
wheel straight (static)
F Vehicle centre axle (marker assistance)
The guide lines are only shown when the
transmission is in position R.
The distance specification sonly appl yto
objec tsthat are at ground level. Driving systems
199Drivingand park ing Z

Additiona
lmessages for vehicles with PARK-
TRONIC
: Fron twarning display
; Additiona lPARKTRONIC measurement
operationa lreadiness indicator
= Rear warning display
Veh icleswithP ARKTRONIC: when PARK-
TRONIC is operationa l(Y page 191), addi-
tional operat iona lreadiness indicator ;also
appears. Warning displays :and =are
active if the corresponding PARKTRONIC
warning displays are active (Y page 192).
They ligh tupy ellow as soon as th efirst seg-
men tint he PARKTRONIC warnin gdisplay
lights up yellow, and they light up red as soon
as the first segment in the PARKTRONIC
warnin gdispla ylights up red.
"Reverse parking" function X
Make sure that the reversing camera is
activated and that the "Reverse parking"
func tion is selected. See the separate oper-
atin ginstructions for COMAND.
The lane and the guid elines are shown. Reversing straight into
aparking space
without turnin gthe steering wheel :
Vehicl ewidth including exterior mirrors
; White lane with steering wheel straight
= Yellow guide line at adistance of approx-
imately 1.0 mfrom th erear area
? Red guide line at adistance of approx-
imately 0.2 5mfrom th erear area
X With the help of white lane ;,check
whether the vehicle will fit int othe parking
space.
X Using the white lan easaguide, carefully
reverse until you reach the end position.
Red guide line ?is then at the end of the
parking space. The vehicle is almost paral-
lel in the parking space.
Reverse perpendicular parking with the
steering wheel at an angle
X Drive past the parking space and bring the
vehicle to astandstill. 200
Drivin
gsystemsDrivin gand parking

:
Vehicl ecentr epoint on the red guide line
at ad istance of approxim ately0.25 m
from the rear area
; Vehicl ecentr epoint on the yellow guide
line at adistance of approxim ately1.0 m
from the rear area
= Trailer drawbar
? Ball coupling
X Set the heigh toftrailer drawbar =so that
it is slightly higher than ball coupl ing?.
X Posi tion the vehicle centrally in front of
trailer drawbar =. :
Ball coupling
; Red guid eline at adistance of approx-
imately 0.2 5mfrom th eball coupling
= Trailer drawbar marker assistant
? Trailer drawbar
A Symbol for the "Coupling up atrailer"
function X
Use th eCOMAN Dcontroller to select sym-
bol A.S ee the separate operatin ginstruc-
tions for COMAND.
The "Coupling up atrailer" functio niss elec-
ted. The distan cespecifi cations now only
apply to obje ctst hat ar eatthe sam elevel
as the ball coupling.
X Reverse carefully, makin gsure that trailer
drawbar marker assistant =points
approximately in the direction of trailer
drawbar ?.
X Reverse carefully until trailer drawbar ?
reaches red guide line ;.
X Couple up the trailer (Y page 226). ATTENTION ASSIST
Important safet ynotes ATTENTION ASSIS
Thelps you during long,
monotonous jour neys such as on motorways
and trun kroads. It is active in the 80 km /h
to 180 km/ hrange.
If ATTENTION ASSIS Tdetects typical indica-
tors of fatigue or inc reasing lapses in con-
centration on the part of the driver, it sug-
gests takin gabreak. G
WARNING
ATTENTIO NASSIST is only an aid and may
detec tyour tiredness or lapses in concentra-
tion too late or not at all. It is not asubstitute
for aw ell reste dand attentiv edriver.
Fatigue may cause you to recognise hazard-
ou ss ituations to olate ,misjudge asituation
or reac tslower .For this rea son, make sure
you fee lreste dbefore you begin driving and
duri ngyour jour ney. Always tak ebreaks in
good time and regularly ,especiall yduring
long jour neys. Otherwise ,you may fai ltorec-
ognise danger sintime, caus eanaccidentand
injur eyours elfa nd others. 202
Driving systemsDriving and
parking

R
you leave or enter atow n.
R the roa dtypec hanges (e.g. mot orway,
country road).
R yo uh avet ravelle dacertainminimum dis-
tance withou tthe traffic sign being repea-
ted or detected again.
X Display Speed Limi tAssist usin gthe on-
boar dcomputer (Y page 244).
i You can also activat eSpeed Limit Assist
using COMAND Online. The maximum per-
missible speed is shown in the COMAND
display; see the COMAND operating
instruc tions. Nigh
tView Assist Plus
Important safet ynotes In addition to the illumination provided by the
normal headlamps, Night View Assist Plus
uses infrared light to illuminat
ethe road. The
Night View Assist Plus camer apicksupt he
infrared light and displays amonochrome
image in COMAND. The image displayed in
COMAN Dcorresponds to aroad lit up by
main-beam headlamps. This enables you to
see the road's course and any obstacles in
good time. When pedestrian recognition is
active, pedestrians recognised by the system
ar eh ighlighted in the Night View Assist Plus
display. G
WARNING
Night View Assist Plus is only an aid designed
to assist driving and does not relieve you of
the responsibility to pay attention. Continue
to look through the windscreen instead of
relyin gont he Night View Assist Plus display.
You ar eresponsible for safet yand must drive
in accordance with traffic conditions .You
coul dotherwis eendange ryoursel fand oth-
ers. 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 the windscreen is dirty, misted up or cov-
ered, for instance by asticker, in the vicinity
of the camera.
R on bends ,onuphill gradients or downhill
gradients.
Light from the headlamps of oncoming vehi-
cles does not affect the Night View Assist Plus
display in the multifunction display. This is
also the case if you cannot switch on the
main-beam headlamps due to oncomin gtraf-
fic. G
WARNING
Night View Assis tPlus does not detect
object sinthe immediat evicinity of the vehi-
cle. Look through the windscreen when
manoeuvring. Make sure that there are no
people or animals in the area in which you are
manoeuvring.
i Infrared light is not visible to the human
eye and therefore does not dazzle. Night
View Assist Plus can therefore remain
switched on even if there is oncomin gtraf-
fic. :
Night Vie wAssist Plus camera
Activating Nigh tView Assist Plus Depending on your vehicle'
sdate of manu-
facture, the csymbol or Ãfor the Driving systems
205Drivingand parking Z

position "Automatic drivin
glights/daytime
drivin glights" is located on the light switch. You can only activat
eNight View Assist Plus
if:
R the key is in position 2in the ignition lock.
R it is dark.
R the light switc hisset to either c,
à orL.
R rev ers egear has not been engaged.
X Make sure COMAND Onlin eisswitched on.
X Press button :.
The Night View Assist Plus display appears
in the COMAN Ddisplay. :
Night View Assist Plus display
; Pedestrian recognised
= Framing
? Symbol for active pedestrian recognition
You can read abou thow to adjust the bright-
nes soft he COMAND displa yinthe COMAND
operating instructions.
i The infrared headlamps only switc hon
when the vehicle is being drive natspeeds of at least 10 km/h. This mean
sthat you
do not hav ethe full visual range while sta-
tionar yand cannot check whether Night
View Assist Plus is working.
Pedestrian recognition G
WARNING
Pedestrian recognition may be impaired or
inoperative if:
R pedestrians are partiall yorentirely
obscured by obje cts, e.g. by parked vehi-
cles.
R the silhouett eofthe pedestrian in the Night
View Assist Plus displa yisincomplete or
interrupted, e.g. by powerful ligh treflec-
tions.
R pedestrians do not contrast with the sur-
roundings.
R pedestrians are not in an upright position,
e.g. sitting, squattin gorlying.
i Animals are not recognised by pedestrian
recognition.
Night View Assist Plus is able to recognise
pedestrians by typical characteristics, e.g. a
silhouette in the shape of aperson.
Pedestrian recognition is then switched on
automatically if:
R Night View Assist Plus is activa ted.
R you are driving faster than about 10 km/ h.
R the surrounding sare dark ,e.g.w hen driv-
ing outside built-up areas without street
lighting.
If pedestrian recognition is active ,sym-
bol ?appears. If apedestrian is now recog-
nised, they are framed =and thereby high-
lighted. If the pedestrian recognition system
has brought apedestrian to your atten tion,
look through the windscreen to evaluate the
situation .The actual distanc etoobjectsand
pedestrians cannot be gauged accurately by
looking at ascreen.
It may be the case that objects are highlighted
as wel laspedestrians. 206
Driving systemsDriving and parking