MERCEDES-BENZ M-Class 2012 W166 Owner's Manual

X
Pull theleft orright release lever;
upwards inthe direction ofthe arrow until
the relevant backrest :isfully released.
X Pull thebackrest :forwards inthe
direction ofthe arrow andallow itto
engage.
X Lean backfirmly against thebackrest :to
ensure itis engaged. Adju
sting thefour- waylumbar
supp ort
You canadjust thecont ourofthe fron tseat
backrest sindividually toprovide optimum
support foryour back. :
Toraise thebackrest contour
; Tosoften thebackrest contour
= Tolower thebackrest contour
? Toharden thebackrest contour Switching
theseat heating on/off
Switching on/off G
WARNIN
G Repeatedly
settingthe seat heating tolevel
3 may result inexcess iveseat temperat ures.
The health ofpassengers thathave limited
temperat uresensit ivityoralimited abilityto
react toexcess ivelyhightemperat uresmay
be affect edorthey mayeven suffer burn-lik e
injuries. Therefore, donot use seat heating
level 3repeatedly. The
three redindicator lampsinthe button
indicate theheating levelyouhave selected. i
If
the batter yvoltage istoo low, theseat
heating mayswitch off. Driver
'sand front-passen gerseat Rear-compart
mentseats
The system automatically switchesdown
from level3to level 2after approximately
eight minutes.
The system automatically switchesdown
from level2to level 1after approximately ten
minutes.
The system automatically switchesoff
approximately 35minutes afteritis set to
level 1.
X Make surethattheSmart Keyisin position
1 or 2in the ignition lock.
X To switch on:press button :repeatedly
until thedesired heating levelisset.
X To switch off:press button :repeatedly
until allthe indicator lampsgoout. Seats
99Seats, steering wheel and mirrors Z

Problems
withtheseat heating The
seat heating hasswitched off
prematurely orcannot beswitched on.The
vehicle's electrical systemvoltage istoo low
because toomany electrical consumers are
switched on.
X Switch offelectrical consumers whichyou
do not need, suchasthe rear window
defroster orinterior lighting. Switching
theseat ventilation on/off
Switching on/off The
three blueindicator lampsinthe buttons
indicate thevent ilation levelyouhave
selected. i
If
the battery voltage istoo low, theseat
vent ilation mayswitch off. X
Make surethattheSmartK eyisin position
2 in the ignition lock.
X To switch on:press button :repeatedly
until thedesired ventilation levelisset. i
You
canopen theside windows andthe
sliding sunroof usingthe"Convenience
opening" feature(Ypage 86).Theseat
vent ilation ofthe driver's seat
automatically switchestothe highest level.
X To switch off:press button :repeatedly
until allthe indicator lampsgoout. Problems
withtheseat ventilation The
seat ventilation hasswitched off
prematurely orcannot beswitched on.The
vehicle's electrical systemvoltage istoo low
because toomany electrical consumers are
switched on.
X Switch offelectrical consumers whichyou
do not need, suchasthe rear window
defroster orinterior lighting. Steering
wheel Import
antsafety notes G
WARNING Do
not adjust thesteering wheelwhiledriving.
Adjust ingthe steering wheelwhiledriving, or
driving without thesteering wheeladjustment
feature lockedcouldcause thedriver tolose
cont rolofthe vehicle.
The electrical steeringwheeladjustment
feature canbeoperated atany time.
Therefore, donot leave children unattended
in the vehicle, orwith access toan unlocked
vehicle. Achild's unsupervised accesstoa
vehicle couldresult inan accident and/or
serious personal injury. 100
Steering
wheelSeats, steering wheel and mirrors

Adj
usting thest eer ing wheel
ma nua lly :
Releas elev er
; Toadj ust thest eer ing whee lheig ht
= Toadj ust thest eer ing whee lpos ition
(fo re- and -aftadj ust men t)
X Push release lever: down comple tely.
The steer ing column isunl ocked.
X Ad jus tthe steering wheeltothe desired
position.
X Push release lever:upcompletely.
The steering columnislocked.
X Check ifthe steering columnislocked.
When doingso,trytopush thesteering
wheel upordown ortry tomove itin the
fore-and- aftdirection. Adjust
ingthe steering wheel
elec trically :
Toadjust thesteering wheelheight
; Toadjust thesteering wheelposition
(fore-and-aft adjustment) i Other
topics:
R EAS Y-ENTRY/EXI Tfeature
(Y page 102)
R Stor ingsettin gs(Ypage 105) Steering
wheelheating
Switching on/off X
Make surethattheSmartK eyisin position
2 in the ignition lock.
X To switch on/off: turnthelever inthe
direction ofarrow :or;.
Indicator lamp=lights uporgoes out.
Vehicles withoutKEYLESS-GO: when you
remove thekey from theignition lock,the
steering wheelheating isdeactivated.
Vehicles withKEYLE SS-GO: when youswitch
off the ignition andopen thedriver's door,the
steering wheelheating isdeactivated.
Problems withthesteering wheel
heating The
steering wheelheating hasswitched off
prematurely orcannot beswitched on.The
vehicle's electrical systemvoltage istoo low
because toomany electrical consumers are
switched on.
X Switch offelectrical consumers whichyou
do not need, suchasthe rear window
defroster orinterior lighting. Steering
wheel
101Seats, steering wheel and mirrors Z

EASY-EN
TRY/EXIT system
Imp ortant safety notes The
EASY- ENTRY/E XITfeat uremak esget ting
in and outofyour vehicle easier .
You canactivat eand deac tivate theEA SY-
EN TRY/E XITfeat ure intheon -bo ard
com pute r(Y page 236). G
WAR
NING You
must makesure noonecan become
tr apped orinjured bythem oving steering
wheel whentheeasy-entry/ex itfeature is
activated.
To stop steering wheelmovement doone of
the following:
R Move steering wheeladjustmen tstal k.
R Pre ssone ofthe mem orypositio nb uttons.
R Pre ssmem orybuttonM.
Do notleave childr enunat tend ed inthe
veh icle,or wit hacc ess toan unlo cked veh icle.
Childr encould open thedriv er'sdoor and
unin tent ion ally activat eth eeasy- entry/ex it
feat ure, whic hco uld result inan acc iden t
and /or serious person alinj ury. G
WAR
NING Let
thesyst emcomple tetheadj ust men t
pro ced ure before settingth ev ehicle in
motion .Allste erin gwheel adjustmentmust
be comple tedbef ore settingth eveh icle in
mot ion.Dr ivin goff withth est eer ing wheel
st ill adj ust ing could caus eth edriv erto lose
co ntrol oftheveh icle.
Posit ionofthest eeri ngwheel whenthe
EASY-EN TRY/EXIT feature isact ive The
steer ing wheel swingsupward swhen
you:
R remove theSmartK eyfrom theignition lock
R open thedriver's doorandKEYLE SS-GO is
in position 1
R open thedriver's doorandtheSmartK eyis
in position 0or 1in the ignition lock i
The
steering wheelonlymoves upwardsif
it has notalready reached theupper end
stop.
Position ofthe steering wheelfor
driving The
steering wheelismoved tothe last
selected positionwhen:
R the driver's doorisclosed.
R you insert theSmartK eyinto theignition
lock.
or
R you press theStart /Stopbutton onceon
vehicles withKEYLE SS-GO.
When youclose thedriver's doorwiththe
ignition switched on,the steering wheelis
also automatically movedtothe previously
set position.
The lastposition ofthe steering wheelis
stored whenyouswitch offthe ignition or
when youstore thesettin gwiththe memo ry
func tion (Ypage 105).
Cra sh-resp onsive EASY-EXIT feature If
the crash- respo nsiveEA SY- EXITfeat ure is
tr iggere din an acc ident ,the steerin gcolum n
will mov eupwards whenthedrive r'sdoor is
open ed.This occurs irres pectiveofthe
posit ionofthe SmartKey inthe ignit ionlock .
This makesiteasier toexit thevehic leand
resc uethe occupant s.
The crash- respo nsiveEA SY- EXITfeat ure is
only operat ionalifthe EASY- EXIT/E NTRY
feat ureisact ivat edinthe on-board computer . 102
Steer
ingwheelSeats, steering wheel and mirrors

Mirrors
Rear-view
mirror
Rear-view mirror(manual anti-glare) X
anti-gl aremode: flickanti-gla re
swi tch :forwa rdsorback. Exteri
ormirrors
Adjusting theexteri ormirrors G
WARNING Exercise
carewhen using the passenger-si de
exterior rearview mirror. Themirror surface
is convex (outward lycurved surfacefor a
wid erfiel dof view ).Objects inmirror are
closer thantheyappear. Checkyou rinteri or
rea rvie wmir ror and glance overyo ur
sho ulde rb efore changin glanes.
The exterior mirror sare automatic allyheated
if the rear window defrosterisswitched on
and theoutside temperatureislow. X
Make surethattheSmart Keyisin position
1 or 2in the ignition lock.
X Press button :for the left- hand exterior
mirror orbutton ;for the right- hand
ext erior mirror .
The indicat orlamp inthe corr espondin g
button lightsupinred.
The indicat orlamp goesoutagain after
some time.Youcanadjust theselect ed
mirror usingadjustm entbutton =aslong
as the indicat orlamp islit.
X Press adjustm entbutton =up, down, to
the right ortothe left until theexterior
mirror isset toaposition thatprovides you
with agood overview oftraff iccon ditions .
Folding theexterior mirrorsin or out
electrically X
Make surethattheSmart Keyisin position
1 or 2in the ignition lock.
X Briefly pressbutton :.
Bot hext erior mirror sfold inor out. i
Make
surethattheexterior mirror sare
alway sfolded outfully while thevehicle is
in motion ,as they mayother wisevibrate. i
If
you aredriving fasterthan
30 mph (47km/ h),you can nolonger fold
in the exterior mirror s.
Sett ingthe exterior mirrors If
the batter yhas been discon nectedor
complet elydischarged, theexterior mirror s
must bereset. Theexterior mirror swill Mirr
ors
103Seats, steering wheel and mirrors Z

otherwise
notfold inwhen youselect the
"Fold inmirrors whenlockin g"funct ioninthe
on-board computer (Ypage 237).
X Make surethattheSmart Keyisin
position 1in the ignition lock.
X Briefly pressbutton :.
Folding theexterior mirrorsinor out
aut omat ically If
the "Fold inmirrors whenlockin g"funct ion
is activated inthe on-board computer
(Y page 237):
R the exter iormirrors foldinautomatically as
soon asyou lock thevehicle fromthe
outside.
R the exter iormirrors foldoutagain
automatically assoon asyou unlock the
vehicle andthen open thedriver's orfront -
passenger door. i
The
mirrors donot fold outifthey have
been folded inmanually .
Exterior mirrorout ofposition If
an exter iormirror hasbeen pushed outof
position, proceedasfollows:
X Vehicles withoutelectrically folding
exterior mirrors: move theexter iormirror
into thecorrec tposition manually.
X Vehicles withelectrically folding
exterior mirrors: press andhold the
mirror- folding button(Ypage 103)untilyou
hear themirror engage inposition.
The mirror housing isengaged againand
you can adjust theexter iormirrors asusual
(Y page 103). Automa
ticanti-glar emirr ors G
WARNIN
G If
incident lightfrom headlamps isprevent ed
from strikingthe sensor inthe rear-view
mirror, forinstan ce,byluggage piledtoohigh in
the vehicle, themirror's automatic anti-
glare functionwill notoperate.
Inc ident lightcould thenblind you.Thismay
distract youfrom thetraffic conditionsand,
as aresult, youmay cause anaccident .
The rear-view mirrorandtheexter iormirror
on the driver's sideautomatically gointo anti-
glare mode ifthe ignition isswitched onand
incident lightfrom headlamps strikesthe
sensor inthe rear-view mirror.
The mirrors donot gointo anti-glare mode if
reverse gearisengaged orthe interior lighting
is switched on. Park
ingposition forthe exterior
mirr oron the front- passenger side
Setting andstoring theparking position You
canposition thefront -passenger side
exter iormirror insuch away that youcan see
the rear wheel onthat side assoon asyou
engage reverse gear.Youcanstore this
position. X
Make surethatthevehicle isstation aryand
that theSmart Keyisin position 2in the
ignition lock.
X En gage reverse gear.
The exter iormirror onthe front -passenger
side moves tothe preset parking position.
X Use adjustmen tbutton =toadjust the
exter iormirror toaposition thatallows you
to see therear wheel andthecurb.
The parking position isstored. 104
Mirr
orsSeats, steering wheel and mirrors

i
If
you shift thetransmission toanother
positio n,the exterior mirroronthe front-
passe ngersidereturns tothe driving
positio n. i
You
canalso store theparking position
using memory buttonM?.
X Make surethattheSmartKey isin
positio n2 in the ignition lock.
X With theexterior mirroronthe front-
passe ngersideactivated, use
adjus tment button =toadjus tthe
exterior mirrortoapositio nwhich
allow syou tosee therear wheel and
the curb.
X Press memory buttonM? and one of
the arrows onadjustment button=
within threeseconds.
The parking position isstored ifthe
exterior mirrordoesnotmove.
If the mirror moves outofposition, repeat
the steps.
Calling upastored parking position
setting X
Turn theSmartK eytoposition 2in the
ignition lock.
X Adjust theexterior mirroronthe front -
passenger sidewith thecorresponding
button (Ypage 103).
X Engage reverse gear.
The exterior mirroronthe front -passenger
side moves tothe stored parking position.
The exterior mirroronthe front -passenger
side moves backtoits original position:
R as soon asyou exceed aspeed of9m ph
(15 km/ h).
R about tensecon dsafter youhave
disengaged reversegear
R ifyou press button: for the exterior
mirror onthe driver' sside Memor
yfunct ion Stor
ingsett ings
With thememor yfunc tion,you can storeup
to thr ee differen tsett ings, e.g.forthree
differen tpeople.
The following settings arestor edasasingle
memory preset:
R position ofthe seat, backr estand head
rest raint
R driver's side:steeringwheel position
R driver's side:position ofthe exterior
mirror son the driver's andfront-passenger
sides G
WARN
ING Do
not activat ethe memory function while
driving. Activating thememory function while
driving couldcause thedriver tolose control
of the vehicle. X
Adj ust the seat (Ypage 96).
X On the driver's side,adjust thesteer ing
wheel (Ypage 101)and the exte riorm irro rs
(Y page 103).
X Press memo rybutt onMand one ofthe
st orage positionbutt ons 1,2or 3within
thr ee seco nds.
The settings are stored inthe selec ted
prese tposition. Atone sounds whenthe
sett ings have been completed. Memory
function
105Seats, steering wheel and mirrors Z

Callin
gup astore dsetting
X Pres sand hold therelev antstorage
posit ionbutt on1,2or 3unt ilth eseat ,
st eerin gwheel andexterio rmirro rsare in
the stored position. i
The
settingproc edure isint errupt edas
soon asyou release thestorage position
butt on. 106
Mem
oryfunctionSeats, steering wheel and mirrors

Useful
information........ .......... .......... 108
Exter iorlighting ................................ 108
Interior lighting ................................. 113
Repla cingbulbs .................. ............... 114
Windsh ieldwipers ............................ 118 107Lights and windshield wipers

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). Exter
iorlighting Impor
tant safet ynotes
For reason sof safet y,Merc edes-B enz
recom mends thatyoudrive withthelights
switc hedoneven during thedaytime. Insome
count ries,operation ofthe headlamps varies
due tolegal requiremen tsand self-imposed
obligation s. Inform
ation about driving abroad
Convert ingtosymm etrical low beam
when driving abroad: switc hthe headlamps
to symmet ricallowbeam incount riesin
which trafficdrives onthe opposite sideofthe
road tothe count rywhere thevehicle is
regist ered. Thispreven tsglare toonc oming
traf fic. Symmet ricallights donot illuminate
as large anarea ofthe edge ofthe road.
Have theheadlamps convert edataqualified
specialist workshop,e.g.anauthoriz ed
Merc edes-B enzCent er,asclose tothe border
as possible beforedrivingin thes ecount ries.
Convert ingtoasym metrical lowbeam
aft erret urn ing: have theheadlamps
con vert edback toasymmet ricallowbeam at
a qualified specialist workshop,e.g.an
authoriz edMerc edes-B enzCent er,assoon as
possible aftercrossing theborder again. Light
switch
Oper ation Depen
dingonthe date ofmanufac tureofyour
vehicle, thec orà symbol forthe
automat icheadlamp mode/dayt imerunn ing
lamps islocate don the light switc h. Illustr
ation:light switc hwith theà symbol for
the automat icheadlamp mode/daytime running
lamps
1W Left-han dstan ding lamps
2X Right-handstanding lamps
3T Parkinglamps, licenseplate and
inst rumen tcluste rlight ing
4Ã Automat icheadlamp mode/daytime
runn inglamps
5L Low-beam/ high-beam headlamps
BR Rearfoglamp Illust
ration: light switc hwith thec symbol for
the autom aticheadlamp mode/daytimerunn ing
lamps
1W Left-han dstandin glamps
2X Right-handstandin glamps 108
Exter
iorlight ingLights and windshield wipers