2012 MERCEDES-BENZ M-Class windshield wipers

Smar
tKeypositions
Smar tKey g
Toremove theSmartK ey
1 Power supply forsome consumers, such
as the windshield wipers
2 Ignition (powersupplyforallconsumers)
and drive position
3 Tostart theengine
As soon asthe ignition isswitched on,allthe
indicator lampsinthe instrumen tcluster light
up. Ifan indic atorlamp doesnotgoout after
the engineisstart ed orifit light sup while the
vehic leisin mot ion, see(Ypage 271).
If the SmartKey isin posit ion0in the ignit ion
lock foranext ende dperiod oftim e,itcan no
long erbe turned inthe ignit ionlock .The
steering isthen locked. Tounlock, remove the
SmartK eyand reinsert itinto theignition lock.
The steering islocked whenyouremove the
SmartK eyfrom theignition lock.
X Remove theSmartK eywhen theengine is
switched off.
The starter battery couldotherwise be
discharged.
If you cannot turntheSmartK eyinthe ignition
lock, thestarter battery maynotbecharged
sufficiently.
X Check thestarter battery andrecharge itif
necessary (Ypage 340).
or
X Jump-start thevehicle (Ypage 341). i
The
SmartK eycan beturned inthe
ignition lockeven ifit is not thecorrect
SmartK eyfor the vehicle. Theignition isnot
switched on.The engine cannot bestarted.
KEY LESS-GO General
informat ion
Vehicles withKEYLE SS-GO are equipp edwith
aS martKey featuringanintegrated KEYLESS-
GO function andadetacha bleStart/St op
button.
The Start/St opbutton mustbeinserted inthe
ignitio nlock andtheKEYLESS-GO keymust
be inthe vehicl e.
Pressi ngthe Start/St opbutton severaltimes
in successi oncorrespond sto the differe nt
SmartKey positions inthe ignitio nlock. This
is only thecase ifyou arenot depressing the
brake pedal.
If you depress thebrake pedalandpress the
Start /Stopbutton ,the engine starts
immediately.
The Start /Stopbutton canberemoved from
the ignition lock.Then, youcan insert the
Smart Keyinto theignition lock. i
You
donot have toremove theStart /Stop
button fromtheignition lockwhen you
leave thevehicle. However, youshould
alwa ystake theSmart Keywith youwhen
leaving thevehicle. Thevehicle canbe
start edwith theStart /Stopbutton andthe
electric alequipment canbeoperated while
the Smart Keyisin the vehicle. Driving
139Driving 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

Useful
information
i This
Operat or'sManual describesall
models andallstan dard andoption al
equipment ofyour vehicle available atthe
time ofpublication ofthe Operat or's
Manual. Country-specificdiffer encesare
possible. Pleasenotethat your vehicle may
not beequipped withallfeature s
descr ibed. Thisalso applies tosafet y-
related systemsand func tions. i
Please
readtheinfor mation onqualified
specialist workshops(Ypage 25). Engine
compartment Hood
Opening thehood G
WARN
ING Do
not pull therelease leverwhile thevehicle
is in mot ion. Othe rwise, thehood could be
forc edopen bypassing airflow.
This could cause thehood tocome looseand
inj ure you and/o rothe rs. G
WA
RNING Do
not open the hoodwh en the engineis
ove rheated.Yo ucou ldbe serio uslyinju red.
Ob serve the coolant temp eraturedisp layto
de term inewheth erthe enginemaybe
ove rheated.Ifyo use efla mes orsmo ke
comi ngfromthe enginecomp artment, move
aw ay fromt hevehicle. Waituntiltheengine
has cooled. Ifnecessary, callthefire
department. G
WARNING There
isarisk ofinjury ifthe hood isopen,
even ifthe engine isnot running.
Some engine componen tscan become very
hot.
To avoid therisk ofburns, onlytouch those
componen tsdescribed inthe Operator's
Manual andobserve therelevant safetynotes. G
WARNING To
help prevent personal injury,stayclear of
moving partswhen thehood isopen andthe
engine isrunning.
The radiator fanmay continue torun for
approximately 30seconds ormay even
restart aftertheengine hasbeen turned off.
Stay clear offan blades. G
WARNING Vehicles
withgasoline engine:
The engine isequipp edwith atransist orized
ignition system. Because ofthe high voltage
it is dangerous totouch anycomponen ts
(ignition coils,spark plugsocket s,diagnostic
socket )of the ignition system
R with theengine running
R while startin gthe engine
R when theignition isswitched onand the
engine isturned manually G
WARNING Vehicles
withdiesel engine:
The engine isequipp edwith ahigh-voltage
electronic controlunit forthe inject ion
system. Because ofthe high voltage itis
dangerous totouch anycomponen tsof the
inject ionsystem (injectors,electrical wires)
R with theengine running
R while startin gthe engine
R when theignition isswitched on
X Make surethatthewindshield wipersare
switched off. G
WARNING The
windshield wipersandwiper linkage
could beset inmotion.
When thehood isopen, youorothers could
be injured bythe wiper linkage.
Make surethatthewindshield wipersare
switched off.Remove theSmartKey ormake
sure thatnoignition position hasbeen
selected withKEYLES S-GO.Allindicator
lamps mustbeoff inthe instrumen tcluster. 312
Engi
necompar tmentMaintenance and care

X
Pull release lever:for the hood.
The hood isreleased.
! Make surethatthewindshield wipersare
not folded awayfromthewindshield. You
could otherwise damagethewindshield
wipers orthe hood. X
Reach intothegap, pullhood catch
handle ;upand liftthe hood.
Onc eyou have lifted thehood about
15 inches (40cm), itis automatically
opened therest ofthe way andheld open
by the gas-filled struts.
Closing thehood G
WARNIN
G When
closing thehood, useextreme caution
not tocatc hhands orfingers. Becareful that
you donot close thehood onanyone.
Make surethehood issecurely engaged
before driving off.Donot cont inue driving if
the hood cannolonger engage afteran
accident ,for example. Thehood could otherwise
comeloosewhilethevehicle isin
motion andinjure youand/or others.
X Lower thehood andletitfall from aheight
of approximately 8inches (20cm).
X Check thatthehood hasengaged properly.
If the hood canberaised slightly, itis not
properly engaged. Openitagain andclose
it with alittle more force. Rad
iator i
Vehicles
withadiesel engine: donot
cov erthe radiator ,for examp lewith a
wint erfron tor bug cover.The reading sof
the on-board- diagnos ticsyste mmay
ot her wise beinac curate.Some ofthese
readings arerequired bylaw and must be
accurate atall times. Engine
oil
Notes onthe oillevel Dependin
gon the driving style,thevehicle
consumes upto0.9 USqts. (0.8 l)of oil over
a distance of600 miles (1000 km).Theoil
consumpt ionmay behigher thanthiswhen
the vehicle isnew orifyou frequently driveat
high engine speeds.
Checking theoillevel using theoil
dipst ick Example:
vehicleswithagasoline engine Engine
compar tment
313Maintenance and care Z

!
Never polish thevehicle orthe light alloy
wheels. Polishingcauses thefinish to
shine.
! The followi ngmay cause thepaint to
become shinyandthus reduce thematte
effect:
R Vigorous rubbingwithunsuitabl e
materials.
R Frequent useofcar washes.
R Washing thevehicle indirect sunlight.
! Never usepaint cleaner, buffingor
polishi ngproducts, orgloss preserver, e.g.
wax. These products areonly suitabl efor
high-gloss surfaces.Theiruseonvehicles
with matte finishleadsto considerable
surface damage (shiny,spotted areas).
Alway shave paintwork repairsperformed
at aqual ified speciali stworkshop, e.g.an
authorized Mercedes-Benz Center.
! Donot use wash programs withahot wax
treatment underanycircumstances. i
The
vehicle shouldpreferably bewashed
by hand using asoft sponge, carshampoo
and plenty ofwater. i
Use
only insect remover andcarshampoo
from therange ofrecommended and
approved Mercedes-Benz careproducts.
Cle aning thewindow s G
WARNING Before
cleaning thewindshiel dorwiper
blades, switchoff the windsh ieldwipers and
remo vethe Smar tKey fromthe ignit ionlock .
On vehic leswith KEYLE SS-GO, press the
St art/ Stop butt onrepeat edlyuntilall
indic atorlamps inthe inst rumen tcluster have
gon eout. Thewindsh ieldwipers could
oth erwise moveandinjure you.
X Clean theinside andouts ideofthe
windows withadamp clothand aclean ing
agent thatisrec omme ndedandapprov ed
by Merc edes- Benz. !
Donot use drycloths,abrasive products,
solven tsor clean ingagent scont aining
solvent sto clean theinside ofthe windows.
Do not touch theinsides ofthe windows
with hard object s,e.g. anice scraper or
ring. There isotherwise arisk ofdamaging
the windows.
! Clean thewater drainage channelsofthe
windshield andtherear window atregular
interv als.Deposits suchasleaves, petals
and pollen mayunder certain
circumst ancesprevent waterfromdraining
away .This can lead tocorrosion damage
and damage toelectron iccomponen ts.
Cleanin gthe wiper blades G
WARNING Before
cleaning thewindshield orwiper
blades, switchoffthe windshield wipersand
remove theSmartK eyfrom theignition lock.
On vehicles withKEYLES S-GO,pressthe
Start /Stopbutton repeatedly untilall
indicator lampsinthe instrumen tcluster have
gon eout. Thewindsh ieldwipers could
oth erwise moveandinjure you.
! Donot pull thewiper blade. Otherwise,
the wiper bladecouldbedamaged.
! Donot clean wiper blades toooften and
do not rub themt oohard. Otherwise, the
graphite coatingcouldbedamaged. This
could cause wipernoise.
X Fold thewiper armsaway fromthe
windshield.
X Carefully cleanthewiper blades witha
damp cloth.
X Fold thewindshield wipersbackagain
before switching onthe ignition.
! Hold thewiper armsecurely whenfolding
back. Thewindshield couldbedamaged if
the wiper armsmacks againstitsuddenly. Care
321Maintenance and care Z