2012 MERCEDES-BENZ M-Class lane assist

ATT
ENTI ONASSIST asses ses your level of
fa tig ue orlaps es inconce ntrationb yta king
th efo llowi ngcriteri ainto acc oun t:
R your person aldri vin gst yle, e.g. steer ing
ch arac teris tics
R dri vin gco nd ition s,e.g. time, drivin gtime
The function alit yof ATTENTI ON ASSIST is
res trict ed and warn ings may bedelaye dor
no toc cur atall:
R ifth ero ad cond ition ispoo r,e.g. ifth e
sur faceis une ven orifth ere arepotholes
R ifth ere isast ro ng side wind
R ifyou haveadop tedaspo rty dri vin gst yle
wit hhig hco rneri ng spe eds orhig hrat es of
acc eler ation
R ifyou predom inant lydri ve atspe eds under
50 mph (80km/h)or over 11 2mph
(18 0km /h)
R ifyou arecurren tly usin gCOMA NDor
mak ing ate leph onecal lwit hit
R ifthe timehas been setincorrect ly
R in act ive drivin gsit uation s,such aswhen
you chan gelanes orchan geyour speed
War ning anddisplaymessa gesinthe
mu ltifunct iondisp lay X
Ac tivate ATTENTION ASSIS Tusing theon-
board computer (Ypage 232).
Symbo l: appears inthe mult ifunc tion
display.
If ATT ENTION ASSIS Tis act ive, you willbe
warne dno soon erthan 20min utes afteryour
jour ney hasbegun. Youwillthenhear an
int ermit tentwarning tonetwice, andthe Att
ention Assist:Dro wsiness Det
ected mess
ageappears inthe
mult ifunction display. X
Ifnec essar y,tak eabreak .
X Pres sa or% tocon firm the
mess age.
On longjo urn eys, takeregular breaksin good
tim eto allow yourse lfto rest prop erly. Ifyou
do not takeabreak andATTENTION ASSIST
st ill det ectstypic alindi cators offat igue or
inc reasin glapses incon centratio n,you willbe
warn edagain after15 min utes attheearlies t.
ATT ENTION ASSIST isrese twhen you
con tinue your journ eyand start sasses sing
your tiredn ess again if:
R you switchoff theeng ine.
R you takeoff your seatbeltandopen the
driv er's door ,e.g .for achange ofdrivers or
to take abreak. Night
ViewAssist Plus
Import antsafety notes In
addition tothe illumination providedbythe
normal headlamps, NightViewAssist Plus
uses infrared lighttoilluminate theroad. The
Night ViewAssist Pluscamera picksupthe
infrared lightanddisplay sag ray scale image
in COMAND. Theimag edisp layed in
COMAND correspondstoaroad litup byhigh -
bea mheadlamps. Thisenables youtosee the
road's course andanyobstac lesingood time.
If pedestrian recognitionisactiv ated,
pedestrian srecogn izedbythe system are
highlighted inthe Night ViewAssist Plus
display. G
WARN
ING Night
ViewAssist Plusisonly anaid designed
to assist driving. Itis not asubstit utefor
atten tivedriving. Donot rely solely onthe
Night ViewAssist Plusdisplay. Continueto
look through thewindshield. Youare
respon sibleforsafety andmust drivein
accor dance withtrafficcon ditions .You could
otherwise putyourself andothers indanger. Driving
systems
195Driving and parking
Z

Problems
withNight ViewAssist Plus Problem Possible
causes/co nsequences andM Solutions
The
picture qualityof
Night ViewAssist Plus
has deteriorated. The
windshield wipersaresmearing thewindshield.
X Repla cethe wiper blades (Ypage 119). The
windshield issmeared afterthevehicle hasbeen cleaned ina
car wash.
X Clea nthe windshield (Ypage 321). There
iswindshield chipdamage inthe camera's fieldofvision.
X Repla cethe windshield. The
windshield isfogged upon the inside.
X Defrost thewindshield (Ypage 132). The
windshield isiced up.
X De-ice thewindshield (Ypage 131). There
isdirt onthe inside ofthe windshield.
X Clea nthe inside ofthe windshield (Ypage 321). Lane
Tracking package
General notes The
Lane Tracking packageconsistsof Blind
Spot Assist (Ypage 198)andLane Keeping
Assist (Ypage 200).
Blind SpotAssist Import
antsafety notes
Blind SpotAssist usesaradar sensor system
to monitor theareas onboth sides ofyour
vehicle. Itsupports youfrom speeds of
approximately 20mph (30km/h) .A warning
displa yin the exterior mirrorsdrawsyour
attent iontovehicles detectedinthe
monitored area.Ifyou then switch onthe
corresponding turnsignal tochange lane,you
will also receive anoptical andaudible
collision warning. BlindSpotAssist uses
sensors inthe rear bumper formonitorin g
purposes. G
WARNING Blind
SpotAssist isonly anaid designed to
assist driving. Itmay failtodetect some
vehicles andisno substitute forattent ive
driving.
Blind SpotAssist cannot detectroadand
traffic condition s.Itmay failtodetect narrow
vehicles, suchasmotorc yclesorbicycles, or
may onlydetect themtoolate.
Monitoring maybeaffected bydirty sensors,
stron gspray orpoor visibili tycaused bysnow,
rain ormist, forexample. Inthis case, vehicles
are detected lateornot atall.
Always payattent iontotraffic condition sand
your surroundings. Otherwise,youmay failto
recogniz edangers intime, cause anaccident
and injure yourself andothers. i
USA
only:
This device hasbeen approved bythe FCC
as a“Vehicular RadarSyst em” .The radar
sensor isinten dedforuse inan automotive
radar system only.Removal, tampering, or198
Driving
systemsDriving and parking

alte
ringof thedevi cewill void any
warr anties, and isno tp ermit tedbythe
FCC. Donot tamper with,alter, oruse in
any non-approved way.
An yunauthoriz edmodificat iontothis
device couldvoidtheuser’s authorit yto
operate theequipment.
For Blind SpotAssist toassist youwhen
driving, theradar sensor system mustbe
activat ed(Ypage 236)and operation al.
Monitoring rangeofthe sensors
Blind SpotAssist monitorsthe area shown in
the figure upto10 ft(3 m) behind and
immediately adjacenttoyour vehicle. G
WARNIN
G Blind
SpotAssist monitorscert ainareas inthe
immediate vicinityof your vehicle. Vehicles
that approach anddrive pastathigh speeds
are not detect ed.There isno display andno
warning.
If the lanes arevery wide, itmay notbe
possible tomonit orthe complete widthofthe
neighboring lane.Forthis reason, vehicles in
the next lanemaynotbedetect ed,especially
if they aredriving inastaggered formation.
This may bethe case ifvehicles aredriving at
that edge oftheir lanewhich isfurthest away
from yourvehicle. Always
payatten tiontotraffic conditionsand
your surroundings. Otherwise,youmay failto
recogn izedangers intime, cause anaccident
and injure yourself andothers.
If the lanes arenarrow, vehicles drivinginthe
lane beyond thelane next toyour vehicle may
be indicated, especially ifthe vehicles arenot
driving inthe middle oftheir lane. Thismay
be the case ifthe vehicles aredriving onthe
inner sideoftheir lane.
Due tothe nature ofthe system:
R warnings maybeissued inerror when
driving closetocrash barriers orsimilar
solid laneborders.
R warnings maybeinterr upted whendriving
alongside longvehicles, suchastruck s,for
a prolonged time.
The two sensors forBlind SpotAssist are
integr atedintothesides ofthe rear bumper.
Make surethatthebumper isfree from dirt,
ice orslush around thesensors. Therear
sensors mustnotbecovered, forexample by
bicycle racksoroverhanging loads.Following
a severe impact orinthe event ofdamage to
the bumpers, havethefunct ionofthe radar
sensors checkedataquali fiedspecialist
workshop, e.g.anauthorized Mercedes-B enz
Center. BlindSpotAssist mayotherwise not
work properly.
Indicator andwarning display :
Yellow indicator lamp/red warninglamp
When BlindSpotAssist isactivated, indicator
lamp :lights upyellow inthe exter ior
mirrors uptoavehicle speedof20 mph Driving
systems
199Driving and parking Z

(30
km/h). When thevehic lespeed exceeds
20 mph (30km/h), theindic atorlamp goes
out and BlindSpot Assistisready foruse.
When yourspeed exceeds approx imately
20 mph (30km/h), warnin glamp :light sup
red ontheco rrespo nding side when evera
vehicl eis detected inthe blind spot
monitoring range.Thiswarning isalw ays
given when avehicl eenters theblind spot
monitoring rangefrombehindorfrom the
side .When youarepassing another vehicle,
the warning isemitted onlyifthe difference
in speed isless than 7mph (12km/h).
The yellow indicator lampgoesoutifreverse
gear isengaged. Inthis event, BlindSpot
Assist isno longer active.
The brightness ofthe indicator/warnin g
lamps isadjusted automatically accordingto
the ambient light. G
WARNING Blind
SpotAssist isnot active atspeeds under
approximately 20mph (30km/h). The
indicator lampsinthe exterior mirrorsare
yellow .Vehicles inthe monit oringrange are
then notindicat ed.
Always payatten tiontotraff iccon ditions and
your surroundin gs.Other wise,youmay failto
recogn izedangers intime, cause anacciden t
and injure yourself andother s.
Collisio nwarning
If avehicle isdetec tedinthe monit oringrange
of Blind SpotAssist andyouswitch onthe turn
signal, adouble warning tonesounds. Red
warning lamp:flashes. Ifthe turn signal
remains on,detect edvehicles areindicated
by the flashing ofred warning lamp:.There
are nofurther warning tones.
Switching onBlind SpotAssist
X Make surethattheradar sensor system
(Y page 236)andBlind SpotAssist (Y
page 232)areactivated inthe on-board
computer.
X Turn theSmartK eytoposition 2in the
ignition lock.
Warning lamps:light upred inthe
exterior mirrorsforapproximately 1.5
seconds andthen turnyellow.
Tra iler towing
When youattach atrailer, makesureyouhave
correct lyestablished theelectrical
conn ection. Thiscanbeaccomplished by
check ingthe trailer lighting. Inthis event,
Blind SpotAssist isdeactivated. Theindicator
lamp inthe exterior mirrorslightsupyell ow,
and the Blind
SpotAssist Currently Unavailable
SeeOperator's Manual message
appearsinthe multifunction
displa y. i
You
candeactivate theindicator lampsin
the exterior mirrors.
To do so, switch offBlind SpotAssist when:
R the SmartK eyisin position 2in the
ignition lock.
R the engine isnot running.
R the electrical connection tothe trailer
has been established.
Lane Keeping Assist Import
antsafety notes
Lane Keeping Assistmonitors thearea in
front ofyour vehicle bymeans ofacamera at
the top ofthe windshield. LaneKeeping Assist
detect slane markings onthe road andwarns
you before youleave yourlane
uninten tionally. 200
Driving
systemsDriving and parking

:
Lane Keepi ngAssist camera
If you have chosen the Display
Unit Speed-/Odom
eter (Y
page 233)function in
the on-board computer andselect km as
the
unit ofmeasu rement, ActiveLaneKeepi ng
Assist isactive fromspeed sof 60 km/h. If
the miles disp
layunit isselected, the
assi stance rangebeginsat40 mph. G
WARNING Lane
Keepi ngAssist doesnotkeep your
vehicle inits lane. Itis only anaid and may
detect thelane markings onthe road
incorrectly ornot atall.
The system maybeimpa iredormay not
function if:
R there ispoor visibility, e.g. due to
insuffici entillumina tionofthe road, ordue
to snow, rain,fogorspray .
R there isgla re, e.g. from oncoming traffic,
the sun, orreflection fromother vehicle s.
R the windshi eldisdirty, fogged upor
covered, forinstance byasticker, inthe
vicinity ofthe camera.
R several orno lane markings forasingle lane
are present.
R the lane markings areworn away,dark or
covered up,e.g. bydirt orsnow.
R the distance tothe vehicle infront istoo
small andthelane markings thuscannot be
detected.
R the lane markings onthe road areunclea r,
e.g. near roadw orks. R
the lane markings changequickly, e.g.
lanes branch off,cross oneanother or
merge.
R the road isnarrow andwindi ng.
Lane Keepi ngAssist cannot detectroadand
traffic conditions. Itis not asubstitu tefor
attentive driving.Youareresponsib lefor the
vehicle 'sspeed ,braking ingood time, and
steering correctly. Alwaysada ptyou rdriving
style tosui tthe prevailing roadandweather
conditions .Always payattent iontotraffic
conditions andyour surroundings. Otherwise,
you may failtorecognize dangersintime,
cause anaccident andinjure yourself and
others.
A warning canbegiven when afront wheel
passes overalane marking. Itwill warn you
by means ofintermit tentvibration inthe
steering wheelforupto1.5 seconds.
Switching onLane Keeping Assist X
Switch onAct iveLane Keeping Assistusing
the on-board computer; todo so, select Standard or Adaptive (Y
page 233).
Symbol :appea rsinthe multifunction
displa y.
If your speed exceeds 40mph (60km/h)
and lane markings aredetected,
symbol :ishighlighted. LaneKeeping
Assist isready foruse.
Standa rd
If Standard is
selected, nowarning vibration
occurs if: Driving
systems
201Driving and parking Z

R
you swit chon thetur nsignals .Int his event,
the warnings aresuppressed foracertain
period oftime.
R adriving safetysystem interven es,such as
ABS ,BAS orESP ®
.
Adapt ive
If Adaptive is
selected, nowarning vibration
occurs if:
R you switch onthe turn signals. Inthis event,
the warnings aresuppressed foracertain
period oftime.
R adriving safetysystem interven es,e.g.
ABS ,BAS orESP ®
.
R you accelerate hard,e.g.kickdown.
R you brake hard.
R you steer actively, e.g.swerve toavoid an
obstacle orchange lanequickly.
R you cutthe corner onasharp bend.
In order thatyouarewarned onlywhen
necessary andingood timeifyou cross the
lane marking, thesystem recogniz escertain
condition sand warns youaccordingly.
The warning vibration occursearlierif:
R you approach theouter lanemarking ona
bend.
R the road hasvery wide lanes, e.g.a
freeway.
R the system recogniz essolid lanemarkings.
The warning vibration occurslaterif:
R the road hasnarrow lanes.
R you cutthe corner onabend. Active
Driving Assistance package
General notes The
Active Driving Assistanc epackage
consist sof DIS TRONIC PLUS(Ypage 169),
Act ive Blind SpotAssist (Ypage 202)and
Act ive Lane Keeping Assist(Ypage 205). Active
BlindSpotAssist Import
antsafety notes
Act ive Blind SpotAssist usesaradar sensor
system tomonitor theside areas ofyour
vehicle whichareinback ofthe driver. A
warning displayin the exterior mirrorsdraws
your attent iontovehicles detectedinthe
monitored area.Ifyou then switch onthe
corresponding turnsignal tochange lane,you
will also receive anoptical andaudible
collision warning. Ifarisk oflateral collision
is detect ed,correct ivebraking mayhelp you
avoid acollision. Tosupport thecourse-
correct ingbrake application, Active Blind
Spot Assist alsouses theforward-facing radar
sensor system. Active Blind SpotAssist
supports youfrom speeds ofapproximately
20 mph (30km/h). G
WARNING Act
ive Blind SpotAssist isonly anaid, and
may detect vehicles/obstacles incorrectlyor
not atall.
The system maybeimpaired ormay not
funct ionif:
R there ispoor visibili ty,e.g. due tosnow,
rain, fogorspray.
R the rear and/or frontsensors aredirty.
Act ive Blind SpotAssist maynotdetect
narrow vehicles, suchasmotorc yclesor
bicycles, ormay onlydetect themtoolate. It
cannot detectvehicles thatareovertaken at
a small distance andthen enter theblind spot
area.
Act ive Blind SpotAssist cannot detectroad
and traffic condition s.Itis not asubstitute for
attent ivedriving. Youareresponsible forthe
vehicle's speed,braking ingood time, and
steering correctly.Always adaptyourdriving
style tosuit theprevailing roadandweather
condition s.Always payattent iontotraffic
condition sand your surroundings. Otherwise,
you may failtorecogniz edangers intime,
cause anaccident andinjure yourself and
others. 202
Driving
systemsDriving and parking

i
USA
only:
This device hasbeen approved bythe FCC
as a“Vehicula rRadar System”. The radar
sen sor isint ended foruse inan auto motive
radar systemonly. Remo val,tampering,or
alte ringof thedevi cewill void any
warr anties, and isno tp ermit tedbythe
FCC. Donot tamper with,alter, oruse in
any non-approved way.
An yunauthoriz edmodificat iontothis
device couldvoidtheuser’s authorit yto
operate theequipment.
For Active Blind SpotAssist toassist you
when driving, theradar sensor system must
be activat ed(Ypage 236)and operation al.
Monitoring area
Ac tive Blind SpotAssist monitorsthe area
shown inthe figure upto10 ft(3 m) behind
and immediately adjacenttoyour vehicle. For
this purpose, Active Blind SpotAssist uses
radar sensors inthe rear bumper. G
WARNIN
G Act
ive Blind SpotAssist monitorscert ain
areas inthe immediate vicinityof your vehicle.
Vehicles thatapproach anddrive pastathigh
speeds arenot detect ed.Novisual nor
audibl ewarnings areemitt edand thesystem
does notbrake thevehicle tocorrec tyour
course. If
the lanes arevery wide, itmay notbe
possible tomonit orthe complete widthofthe
neighboring lane.Forthis reason, vehicles in
the next lanemaynotbedetect ed,especially
if they aredriving inastaggered formation.
This may bethe case ifvehicles aredriving at
that edge oftheir lanewhich isfurthest away
from yourvehicle.
Always payatten tiontotraffic conditionsand
your surroundings. Otherwise,youmay failto
recogn izedangers intime, cause anaccident
and injure yourself andothers.
If the lanes arenarrow, vehicles drivinginthe
lane beyond thelane next toyour vehicle may
be indicated, especially ifthe vehicles arenot
driving inthe middle oftheir lane. Thismay
be the case ifthere arevehicles drivingatthe
inner edgeoftheir lanes.
Due tothe nature ofthe system:
R warnings maybeissued inerror when
driving closetocrash barriers orsimilar
solid laneborders.
R warnings maybeinterr upted whendriving
alongside longvehicles, suchastruck s,for
a prolonged time.
Two Active Blind SpotAssist radarsensors
are integrat edinto thefront andrear bumpers
respect ively.Anadditional radarsensor is
located behindthecover inthe radiator grill.
Make surethatthesensor areasonthe
bumpers andthesensor coverinthe radiator
grill arefree ofdirt, iceand slush. Therear
sensors mustnotbecovered, forexample by
cycle racks oroverhanging cargo.Following
a severe impact orinthe event ofdamage to
the bumpers, havethefunct ionofthe radar
sensors checkedataquali fiedspecialist
workshop. BlindSpotAssist mayotherwise
not work properly. Driving
systems
203Driving and parking Z

Indi
catorand warning displa y :
Yellow indicat orlamp/ redwarn inglamp
When ActiveBlin dSpo tAssist isactivated,
indicator lamp:lights upyell ow inthe
exterior mirrorsuptoav ehicle speed of
20 mph (30km/ h).When thevehicle speed
exc eeds 20mph (30km/ h),the indicat or
lamp goesoutand Active Blind SpotAssist is
ready foruse.
When yourspeed exceeds approximat ely
20 mph (30km/ h),warning lamp:lights up
red onthe corr espondin gside whenever a
vehicle isdetec tedinthe blind spot
monit oringrange. Thiswarning isalway s
given when avehicle enters the blind spot
monit oringrange frombehind orfrom the
side. When youarepassing anothervehicle,
the warning isemitt edonly ifthe differen ce
in speed isless than 7mph (12km/ h).
The yellow indicatorlamp goesoutifrevers e
gear isengaged. Inthis event ,Ac tive Blind
Spot Assist isno longer active.
The brightn essofthe indicat or/warn ing
lamps isadjusted automatic allyaccor dingto
the ambient light. G
WARN
ING Act
iveBlind SpotAssist isnot active atspeeds
lower than20mph (30km/ h).The indicat or
lamps inthe exterior mirror sare yellow.
Vehicles inthe monit oringrange arethen not
indicat ed.
Always payatten tiontotraff iccon ditions and
your surroundin gs.Other wise,youmay failto recogn
izedangers intime, cause anacciden t
and injur eyourself andother s.
Visua land audible collision warnings
If you switch onthe appropriate turnsignals
and avehicle isdetec tedinthe side
monit oringrange, youwillreceive avisual and
acoustic collisionwarning. Youwillhear a
double warning toneand redwarning
lamp :flashes. Ifthe turn signal remains on,
vehicles detectedareindicat edbythe
flashing ofred warning lamp:.Thereareno
further warning tones.
Course-correcting brakeapplication
If Act ive Blind SpotAssist detectsa risk ofa
lateral collision inthe monitorin grange, a
course-corr ectingbrakeapplication iscarried
out. This ismeant toassist youinavoiding a
collision.
The course-corr ectingbrakeapplication is
availa bleinthe range between 20mph
(30 km/h) and120 mph (200 km/h).
If acourse-corr ectingbrakeapplication
occurs, redwarning lamp:flashes inthe
exterior mirrorandthefollowing isshown in
the multifunction display,for example: G
WARNING Act
ive Blind SpotAssist isonly anaid
designed toassist driving. Itis not asubstitute
for attent ivedriving. Insome cases, the
course-corr ectingbrakeapplication isnot
sufficient toavoid acollision. Insuch acase,
you must steer, brakeoraccelerate.
In very rarecases, thesystem may
erroneously detectadanger ofcollision inthe
area ofcrash barriers orsimilar laneborders
and apply thebrakes. ActiveBlind SpotAssist
does notdetect alltraffic situations androad 204
Driving
systemsDriving and parking