2012 MERCEDES-BENZ M-Class change time

:
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

may
detect thelane markings onthe road
incorrectly ornot atall.
The system maybeimpa iredormay not
function if:
R severa lor no lane markings forasingle lane
are present.
R there ispoor visibility, e.g. due to
insuffi cientillumina tionofthe road, ordue
to snow, rain,fogorspray .
R there isgla re, e.g. from oncoming traffic,
the sun, orreflection fromother vehicles.
R the winds hieldis dirty, fogged upor
covered, forinstance byasticker, inthe
vicinity ofthe camera .
R the lane markings areworn away,dark or
covered up,e.g. bydirt orsnow.
R the dista ncetothe vehicl ein front istoo
smal land thelane 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.
Active LaneKeepi ngAssist cannot detect
road andtraffic conditions. Itis not a
subs titute forattentive driving.You are
responsi bleforthe vehicl e'sspeed ,braking in
good time, andsteering correctly. Always
ada ptyou rdriving styletosui tthe prevailing
road andweather conditions .Always pay
att ent ion totraffic condition sand your
surro undin gs.Oth erwise, youmay failto
rec ogn izedanger sin tim e,cause anacc ident
and injure yourself andothers.
War ning vibration inthesteer ingwheel
A warnin gcan begiven when afro ntwheel
passes overalane mark ing.You willbe
warned bymean sof intermit tentvibrat ionin
the steerin gwheel forupto1.5s econ ds.
In order thatyouarewarned onlywhen
nec essary andingood timeifyou cross the lane
markin g,the system recognizescertain
con ditions andwarns youaccor dingly.
The warning vibration occursearlier if:
R you approach theouter lanemarkin gon a
bend.
R the road hasvery wide lanes, e.g.a
freeway.
R the system recognizessolid lanemarkin gs.
The warning vibration occurslater if:
R the road hasnarrow lanes.
R you cutthe corn eron abend.
Lane-corr ectingbrakeapp lication
If you leave yourlaneunder certain
circ umstan cesthevehicle willbrake briefly
on one side. Thisismeant toassist youin
bringin gthe vehicle backtothe original lane.
This functionisavailable inthe range between
40 mph and120 mph (60km/ hto
200 km/h).
A lane-c orrectingbrake application canonly
be made afterdriving overasolid,
recogn izablelanemarkin g.Befor ethis, a
warning mustbegiven bymeans of
int ermit tentvibrat ioninthe steerin gwheel.
In additio n,alane with lanemark ingsonbot h
sides mustberec ogn ized. Thebrak e
applicat ionalso slight lyreduc esvehic le
speed.
If alane- correctingbrak eapplicat ionoccurs,
the followin g,for exam ple,appears inthe
mult ifunc tiondisplay: i
A
furt her lane- correctingbrak e
applicat ioncan only occurafteryour
vehic lehas returne dto the origin allane. 206
Driving
systemsDriving and parking

R
you switchon thetur ns ignals .Int his
event, thewarnings aresuppressed fora
certain periodoftime.
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.
Tra iler towing
When youattach atrailer, makesureyouhave
correct lyestablished theelectrical
conn ection. Thiscanbeaccomplished by
check ingthe trailer lighting. Off-r
oaddriving systems 4MATIC
(permanentfour-wheel drive)
4MATIC ensuresthatallfour wheels are
permanent lydriven. Together withESP®
and
4ETS, itimproves thetract ionofyour vehicle
whenever adrive wheel spinsdueto
insufficient grip. G
WARNING If
adrive wheel isspinning duetoinsufficient
tract ion:
R While driving off,apply aslittle throttleas
possible.
R While driving, easeupon the accelerator
pedal.
R Adapt yourspeed anddriving styletothe
prevailing roadcondition s.
Failure toobserve theseguidelinescould
cause thevehicle toskid.
The 4MATIC cannotprevent accidents
resulting fromexcessive speed.
! Never towthevehicle withoneaxle
raised. Thismay damage thetransf ercase.
Damage ofthis sort isnot covered bythe
Mercedes-Ben zLimited Warranty. All
wheels mustremain eitheronthe ground or
be fully raised. Observe theinstruct ions
for towing thevehicle withallwheels infull
cont actwith theground. i
In
wintry driving condition s,the maximum
effect of4MATIC canonly beachieved if
you usewinter tires(M+S tires ),wi th snow
chai nsifnecessa ry.
! Function orperfo rmance testsmayonly
be perfo rmed ona2-axle dynamome ter.If
you wish tooper atethe vehi cleonsuch a
dy namome ter,please consul tan
auth orizedMer cedes-Ben zCent er
beforehan d.You could otherwisedamage
the drive trainorthe brake system.
For infor mation aboutdriving off-road, see
(Y page 162). DSR
(Dow nhillSpeed Regulat ion)
Impor tantsafet ynotes DS
Rassists youwhen driving downhill. It
keeps thespeed oftravel atthe speed seton
the on-board comput er.The steeper the
downhill gradient,the greater theDSR
brakin geffec tonthe vehicle. Whendriving on
flat stret ches ofroad oron anuphill gradient,
the DSR braking effectisminimal ornon-
existent . G
WARNING Downhill
SpeedRegulation (DSR) isa
conven iencesystem designed toassist the
driver during vehicle operation. Thesystem
settin gmust beappropriate tothe
topographical andweather condition s
encount ered,which canchange quickly. The
driver isresponsible forthe vehicle speedand
for safe brake operation atall times.
Depending onthe programmed speed,actual
vehicle speedandgradient, switching onDSR
while driving cancause thevehicle toslow
down rapidly ,and youmay hear asound,
caused bythe activation ofthe vehicle's brake
system through DSR.Sudden andunexpected
deceleration canresult inloss ofvehicle 208
Off-r
oaddriving systemsDriving and parking

Dri
vin gsys tems Disp
laymessa ges Poss
iblecauses/ conse quences andM Solu
tions À
Att
ention Assist: Dro
wsiness Det
ected Bas
edon spe cific criteri a,AT TENTI ON ASSIST has determ ined that
th edri ver istired orpayin gles sat te nt ion .Aw arning tone also
soun ds.
X Ifne ces sary, takeabreak .
Dur inglongjo urn eys, takereg ular break sin good timeso you get
en ough rest. À
Att
ention Assist Ino
perative AT
TENTI ON ASSIST has faile d.
X Visi taqu alified specialist workshop. Á
Drive
MoreSlowly You
cann otchang ethe vehicle level.Possible causesare:
R you aredrivin gtoo fast forthe select edvehicle level.
R you aretowin gatrailer.
R the trailer- coupling socketisbeing used,e.g.forabicycle rack.
X Driv emore slowly andthen select thedesired vehiclelevelagain
(Y page 181).
X Observ ethe noteson towin gatra iler (Y page 210) . Á
Com
pressorIs Coo
ling Yo
uha ve selected ahigh er veh iclelevel .The compressor first
needs tocool down because offrequent levelchanges.
X Drive inamanner appropria tefor the current vehiclelevel.
X Make surethatthere issufficient groundclearance.
X Allow thecompressor tocool down.
When thecompressor hascooled down,thedispla ymessage
disappe ars.Thevehicle thencontinues rising tothe selected
level. Á
Malfunction AIRMATIC
ismalfunctionin g.
X Drive inamanner appropria tefor the current vehiclelevel,but
no faster than50mph (80km/h).
X Make surethatthere issufficient groundclearance.
X Have thevehicle checkedataqual ified specialist workshop. The
Active Curve System isfaulty. Thevehicle's handling
characterist icsmay beaffected.
X Do not drive faster than50mph (80km/h).
X Have thevehicle checkedataqual ified specialist workshop. 258
Display
messagesOn-board computer and displays

Tire
s Pro
blem Po
ssible cause s/consequ encesand M So
luti ons h
USA
only:
The yellow tire pressu re
moni torwarnin glamp
(p res sure loss/
ma lfunctio n)islit.
Ca nad aonl y:
The yellow tire pressu re
moni torwarnin glamp
(p res sure loss) islit. G
Ris
kofacciden t The
tirepres sure monitorh as det ectedaloss ofpres sure inat
least oneof thetir es.
X Stop theveh icle without makingany sudde nstee ring orbra king
ma neu vers.Pa yatte ntiontothe traffic conditionsasyou doso.
X Observe theadditional displaymessages inthe multifunct ion
display .
X Check thetire pressure. Ifnecessary, correctthe tire pressure
(Y page 359).
X Ifnecessary, changeawheel (Ypage 374). h
USA
only:
The yellow tirepressure
monit orwarning lamp
(pressure loss/
malfunct ion)flashes for
60 seconds andthen
remains lit. The
tirepressure monitorisfaulty.
X Observe theadditional displaymessages inthe multifunct ion
display .
X Visit aquali fiedspecialist workshop. G
WARNIN
G Each
tire,including thespare (ifprovided), shouldbecheck edatleast every twoweeks when
cold andinflated tothe pressure recommen dedbythe vehicle manufacturer onthe Tire and
Loading Information placard onthe driver's doorB-pillar or,ifavailab le,the tire pressure label
on the inside ofthe fuel filler flap.Ifyour vehicle hastires ofad iffer entsize than thesize indic ated
on the Tire andLoadin gInf ormat ionplacard orthe tirepress urelabel, youshould determin ethe
proper tirepress ureforthosetires.
As anadded safetyfeat ure, your vehic lehas been equipped withatir epress uremon itoring
syst em(TPMS )that illuminat esalow tirepress uretelltalewhen oneormore ofyour tires are
sign ifican tlyunder inflated. Accor dingly, whenthelow tirepress uretellt aleilluminat es,you should
sto pand chec kyour tires assoon aspossible, andinflate themtothe proper pressure. Driving
on asignificant lyunderinflated tirecauses thetire tooverheat andcanlead totire failure.
Underinf lationalsoreduces fuelefficienc yand tiretread life,and may affect thevehicle's handling
and stopping ability.PleasenotethattheTPMS isnot asubstitute forproper tiremainten ance,
and itis the driver's responsibility tomaintain correcttire press ure,even ifunder inflation has
not reach edthe level totrigger illuminat ionofthe TPMS lowtirepress uretelltale.
USA only:
Your vehic lehas also been equipped withaTPMS malfun ction indic atortoindic atewhen the
syst emisnot operat ingproper ly.The TPMS malfun ction indic atoriscom bined withthelow tire
press uretellt ale. When thesyst emdete ctsa malfun ction, thetellt alewill flash forapprox imately
1m inuteand thenremain continuously illuminated. Thissequence willberepeated everytime 280
War
ning andindicator lampsin theinstr ument clusterOn-board computer and displays

X
Turn theSmart Keytoposition 2in the
ignition lock.
X Press theprogramming buttonofthe door
or gate drive (seethedoor orgate drive
operating instructions ,e.g. under
"Programming ofadditional remote
cont rols"). i
You
now normally have30seconds to
initiate thenext step.
X Press thepreviously programmed
tran smitt erbutton ofthe HomeLin k®
integr atedgarage dooropener repeatedly
in succession untilthedoor opens.
The rolling codesynchron izationisthen
complete.
Notes onprogr ammingthe remot e
control
Canadian radiofrequency lawsrequire a
"break" (orinter ruption) ofthe tran smission
signals afterbroadcasting forafew seconds .
These signals maynottheref orelast long
enough forthe integr atedgarage dooropener
to recogn izethe signal during programming.
Comparable withCanadian law,some U.S.
garage dooropeners alsohave abuilt-in
"interr uption".
If you liveinCanada orhave difficulties
programming thegarage dooropener
(regardless ofwhere youlive) when usingthe
programming steps(seeabove), proceed as
follows:
X Press andhold oneoftran smitt er
button s; to? ofthe integr atedgarage
door opener.
Indicat orlamp :start sto flash yellow
after ashort period.
X Release thetran smitt erbutton .
X Press transmitt erbutton Bofthe garage
door remote controland hold fortwo
seconds, thenrelease fortwo seconds,
then press againandhold fortwo seconds. X
Repeat thissequence ontran smitt er
button Bofthe garage doorremot e
cont roluntil indicator lamp:isgreen.
Repeat theprocess ifindicator lamp:
turns red.
X Contin uewith theother programming
steps (seeabove).
Problems whenprogramming
If you areexperienc ingproblems
programming theintegr atedgarage door
opener onthe rear-view mirror,takenoteof
the following instructions :
R check thetran smission frequency of
garage doorremot econt rolA (usual ly
found onthe reverse sideofthe remot e
cont rol).
The integr atedgarage dooropener is
compatible withdevices thatcanbe
operated withunits inafrequency rangeof
280 to390 MHz.
R change thebatteries ingarage doorremot e
cont rolA.T hisincreases theprobabil ity
that garage doorremote controlA will
send astron gand precise signaltothe
integrated garagedooropener onthe rear-
view mirror.
R when programming, holdgarage door
remote controlA atdifferent distances
and angles fromthetransmit terbutton that
you areprogramming. Trydifferent angles
at adistance between 2and 12inches (5
to 30 cm) orthe same angle atvarying
distances.
R ifanother remotecontrolfor the same
garage doordrive isavaila ble,repeat the
same programming stepswiththisremote
cont rol.Before youperform thesteps ofthe
operation, makesurethatthere arenew
batteries inthe garage doorremote
cont rol.
R note thatsome remote controlsonly
transmit foralimited amount oftime (the
indicator lamponthe remote controlgoes Features
307Stowing and features Z

plastic
trim.This maintains thehigh-quali ty
look ofthe surfaces.
X Wipe theplastic trimwith adamp, lint-free
cloth, e.g.amicrofiber cloth.
X Heavy soiling:use carcare andcleaning
products recommen dedandapproved by
Mercedes-Ben z.
The surface maychange colortemporarily.
Wait untilthesurface isdry again.
Cleanin gthe steering wheelandgear or
selec torlever X
Thoroughly wipewithadamp clothoruse
leather careagents thathave been
recommen dedandapproved byMercedes-
Benz .
Cleanin ggenuine woodand trim
elements X
Wipe thewooden trimandtrim pieces with
a damp, lint-free cloth ,e.g. amicr ofiber
clo th.
X Hea vysoilin g: usecar care andcleani ng
pro ducts reco mmend edand appro ved by
Mer cedes-Be nz.
! Donot usesol vent-b ased cleani ngagents
su ch astar remo ver,wheelcleaner s,
polishes orwaxes. Thereisoth erwise arisk
of damagin gthe surface.
! Donot use chrome polish ontrim pieces .
The trim pieces haveachr ome lookbutare
most lymade ofanodiz edaluminum and
can lose theirshin eif chr ome polish is
used. Useadamp, lint-free clothinst ead
when cleaningthe trim pieces .
If the chrome- plated trim pieces arevery
dirt y,you can useachr ome polish. Ifyou
are unsur eas towhet herthetrim pieces
are chrome- plated ornot ,con sult an
author izedMerc edes- BenzCent er. Cleaning
theseat covers !
Donot use microf iberclothstoclean
genuine leather,artificialleather or
Alcan tara® covers.Ifused often,these can
damage thecover .
! Observe thefollowing whencleanin g:
R clean genuine leathercoverscaref ully
wit hadamp clothand then wipe the
co ver sdown withadry cloth.M ake sure
th at theleat her does notb ecome
soaked. Itmay other wisebecome rough
and crack ed.Only useleather care
agents thathave been testedand
approved byMercedes- Benz.You can
obtain thesefromaqualified specialist
worksho p,e.g. aMercedes- BenzService
cen ter.
R clean artificialleather coverswith aclot h
moisten edwith asolution containin g1%
detergen t(e.g. dish washing liquid).
R clean clothcover swith amicrof ibercloth
moisten edwith asolution containin g1%
detergen t(e.g. dish washing liquid).Rub
carefully andalway swipe entireseat
sect ions toavoid leaving visiblelines.
Leave theseat todry afterwards.
Cleaning resultsdepend onthe type of
dirt and how long ithas been there.
R clean Alcantara® coverswith adamp
clot h.Make sureyouwipe entireseat
sect ions toavoid leaving visiblelines. i
Note
thatregular careisessent ialto
ensure thattheappearance andcomf ortof
the cover sis retain edover time.
Cleaning theseat belts X
Use clean, lukewarm waterandsoap
solution.
! Donot clean theseat belts using chemic al
cleanin gagents .Donot drythe seat belts
by warming themabove 176‡(80 †)or
placing themindirect sunlight. 324
CareMaintenance and care