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

Night
ViewAssist Plus................... 195
PARKT RONIC................................. 183
Rea rview came ra.......................... 190
Driv ingtips
Automa tictransmis sion................. 147
Brakes ........................................... 159
Break-in period.............................. 138
DISTRONI CPLUS ........................... 177
Downhi llgrad ient........................... 159
Drinking anddriving....................... 158
Driving abroad ............................... 108
Driving inwinter .............................162
Driving onfloo ded road s................ 161
Driving onsand .............................. 165
Driving onwet road s...................... 161
Driving overobsta cles................... 165
Exhaus tcheck ............................... 158
Fuel .............. ..................... ............. 158
Gene ral.......................................... 157
Hydr oplaning ................................. 161
Icy road surfaces........................... 162
Limi tedbraking effici ency on
sal ted road s................................... 160
Off-road driving.............................. 163
Off-road fording............................. 161
Ped als. ........................................... 158
Snow chains.................................. 353
Symmetri callow beam.................. 108
Tire ruts ......................................... 165
Tow ingatrail er.............................. 210
Trave linguphill....... ....... ....... ..........166
Wet road surface........................... 159
DSR (Dow nhil lSpee dRegula tion)
Dis play mess age............................ 259
Function/notes ............................. 208
DVD audio (on-bo ardcomputer) ......230
DVD video(o n-bo ardcomputer) ......230 E
EA
SY-E NTRY feature
Activating/d eactivating ................. 236
Function/notes ............................. 102
EA SY-E XITfeature
Cra sh-resp onsive........................... 102
Function/notes ............................. 102
Switchi ngon/off ........................... 236
EA SY-P ACKload-s ecuring kit........... 291EBD
(elec tronic brakeforce
distributi on)
Displ aymessa ge............................ 241
Function/notes ................................65
Ele ctric alfuses
see Fuse s
Ele ctroni cbrake forcedistributi on
see EBD (electronic brakeforce
dis tribu tion)
Ele ctroni cStabil ityProgram
see ESP®
(Electroni cStab ility Pro gram)
El ec tron icTrac tionSys tem
se e4ETS (Electr onicTra ctio nSy ste m)
Eme rgencyr elease
Dr iver 'sdoor .................................... 80
Vehi cle............................................. 80
Emerge ncyspare wheel
Storage location ............................ 329
Emerge ncyTensi oningDevic es
Function .............. ..................... ........53
Safe tyguideline s............................. 39
Emerge ncyunlo cking
Tai lga te............................................ 84
Emis sions purific ation
Service andwarranty informa tion....21
Eng ine
Che ckEngine warning lamp ....... ....276
Displ aymessa ge............................ 254
Emergency starting........................ 345
Engine number....... ........................382
Irregu larr unn ing............................ 143
Starting problems .......................... 143
Starting theengine withthe
SmartKey ....................................... 140
Starting with KEYLESS-GO .............141
Switchi ngoff .................................. 155
Eng ineelectroni cs
Prob lem(malfunction) ................... 143
Eng ineoil
Addi ng........................................... 314
Additi ves........................................ 388
Che cking theoilleve l....... .............. 313
Che cking theoilleve lusi ng the
dip stick .......................................... 313
Displ aymessa ge............................ 256
Fill ing capa city............................... 384
Notes aboutoil grad es....... ............ 388 In
dex
9

G
WARNING Objects
locatedabovethe heig htrange of
Active Parking Assistwillnot bedetected
when theparki ngspace ismeasu red.These
are not taken intoaccount whentheparki ng
proced ureiscalcu lated,e.g. overha nging
loa ds, tail sections orloa ding ramps ofgood s
vehicl es.Insome circumsta nces,Active
Parking Assistmaytherefore guide you into
the parki ngspace tooearly.This may leadto
a colli sion. Forthis reaso n,you shou ldavoi d
usi ng Active Parking Assistinsuch situations. G
WARNING The
front ofthe vehicl ewil lveer outinthe
dire ction ofthe oncoming trafficduringthe
parki ngopera tion.Insome cases, thevehicl e
wil lals otake youonto sections ofthe
oncoming laneduringthe parki ngproced ure.
You arerespo nsiblefor safety atall times and
must payattention toany road users
app roachi ngorpass ing.Stop thevehicl eif
necessa ryor cancel theActive Parking Assist
parki ngproced ure. G
WARNING Make
surenoperso nsoranima lsare inor
near thearea inwhi chyou areparki ng/
maneu vering. Otherwi se,they couldbe
injured .
Use Active Parking Assistforparki ngspa ces:
R that arepara llelto the direction oftravel
R that areonstraig htroad s,not bends
R that areonthe same levelas the road ,e.g.
not onthe pave ment
Parking tips:
R on narrow roads,drive pastthe parking
space asclose aspossible.
R parking spacesthatarelittered, overgrown
or partially occupied bytrailer drawba rs
might beidentified incorrectlyornot atall.
R snowfall orheavy rainmay lead toaparking
space beingmeasured inaccurately. R
pay attent iontothe PARKTRONIC
(Y page 184)warning messages duringthe
parking procedure.
R you can interven ein the steering procedure
to correct itat any time. Active Parking
Assist willthen becanceled.
R when transport ingaload which protrudes
from yourvehicle, youshould notuse
Act ive Parking Assist.
R never useActiveParking Assistwhensnow
chains oran emergency sparewheel are
mounted.
R make surethatthetire pressures are
alwa yscorrect .This has adirec tinflu ence
on the parking characteri stics ofthe
veh icle.
R the wayyo ur veh icleis po sitio ned inthe
pa rking spaceafter parking isde pende nt
on vario us factors .These include the
position andshape ofthe vehicles parked
in front andbehind itand thecondition sof
the location. Insome cases, Active Parking
Assist mayguide youtoofarinto aparking
space, ornot farenough intoit.Insome
cases, itmay alsolead youacross oronto
the curb. Ifnecessary, youshould abortthe
parking procedure withActive Parking
Assist.
R you can also engage forward gear
prematurely. Thevehicle redirects and
does notdrive asfar into theparking space.
Should thegear change occurtoosoon to
achieve asensible parkingposition, the
parking procedure willbeaborted.
! Ifunavoidabl e,you should driveover
obstacles suchascurbs slowly andnotat
a sharp angle. Otherwise, youmay damage
the wheels ortires.
Detecting aparking space Active
ParkingAssist isswi tched on
au tomatica llywhe ndriving forwards.The
system isopera tional atspee dsofup to
app roximatel y22 mph (35km/h). Whilein
opera tion,thesystem independently locates Drivi
ngsystems
187Driving and parking Z

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

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). Wher
ewill Ifind. ..? First
-aidkit
X Open thetailgate. X
Remove first-aid kit: from theparcel net. i
Check
theexpirat iondate onthe first -aid
kit atleast onceayear. Replace the
con tentsifnec essary, andreplace missing
con tents. Vehicle
toolkit
Not es The
vehicle toolkitcan befound inthe
stowage wellunder thecargo compar tment
floor. i
When
theyleave thefactory, vehicles
without a"Minispare" emergencyspare wheel
arenot equipped withthetools
needed tochan geawheel, suchasajack .
Countr y-specificdiffer encesare possible.
Some toolsforchan gingawheel are
specific tothe vehicle. Youcanobtain tools
that areapproved foruse onyour vehicle
at aqual ified specialist workshop, e.g.an
authorized Mercedes-Ben zCent er.
Vehicles withaTIREFIT kit X
Lif tth etrunk floor up (Ypage 292). :
Lug wren ch
; Jack
= Tiresealan tfiller bottle
? Align mentbolt
A Tire inflation compressor
B Folding wheelchock
C Warning triangle
D Ratchet wrench
E Towing eye
Vehicles witha"Mini spare" emerge ncy
spare wheel X
Lift the trunk floorup(Y pag e292).
X Remo vethe "Minispa re"emerge ncyspare
whee l(Y pag e329). 328
Where
willIfind...?Breakdown assistance

Exam
ple: veh icles with AIR MATI Cand trailer tow
hi tch
: Folding wheelcho ck
; Lugwre nch
= Alignme ntbolt
? Ballcou pling ofthe trailert ow hitch
A Towing eye
B Jack
C Ratchet wrench "Minispar
e"emergency sparewheel
The "Minispare" emergencyspare wheel can
be found inthe stowage wellunder thetrunk
floor.
X Lift the trunk floorup(Ypage 292). Example:
vehicleswithoutlockable trunkfloor X
Vehicles withtrailer towhitch: remove
the ball coupling stowagetray.
X Turn emergenc yspare wheel retainer ;
count erclock wiseandremove it.
X Remove "Minispare" emergencyspare
wheel :. Vehicles
withlockable trunkfloor
X Remove thecontentsof sto wage tray ;.
X Turn thecentral ret ainin gscr ew insto wage
tr ay ; and "Minispar e"emerg encyspare
wheel :count ercloc kwise andremov eit.
X Remove stowage well;.
X Vehicles withtrailer towhitch: remove
the ball coupling stowagetray.
X Remove "Minispare" emergencyspare
wheel :.
For further infor mation onchang ingawheel
and mount ingthe spare wheel, see
(Y page 329). Flat
tire Prep
aring the vehicle
Your vehicle maybeequipped with:
R TIREF ITkit 24
R a"Minispare" emergencyspare wheel
R MOEx tended tires (tires withrun-flat
propert ies)(Ypage 338) i
Vehicle
preparation isnot necessary on
vehicles withMOEx tended tires .
24 Canada only. Flat
tire
329Breakdown assistance

X
To incre ase thetire pres sure :sw itch on
the tire inflation comp ressor . E
Pressu rerelease button
F Pressu regaug e
X To reduc ethe tire pres sure :pre ss
pre ssu rerelease button Eonthe filler
hos e.
X Stow thetire sealant bottle and thetire
infl ation comp ressor .
X Driv eto the nearestworkshop andhave the
tire changed there.
X Have thetire sealant bottlereplaced as
soon aspossible ataquali fiedspecialist
workshop, e.g.atan authorized Mercedes-
Benz Center. H
Environmental
note Have
theused tiresealant bottledisposed of
professionally, e.g.atan authorized
Mercedes-B enzCenter.
X Have thetire sealant bottlereplaced every
four years ataquali fiedspecialist
workshop, e.g.anauthorized Mercedes-
Benz Center. Changing
awhee land mountin gthe
spare wheel
Preparing thevehi cle G
WARNING The
wheeland tiresize ofthe emerge ncy
spa rewhe el/sp arewhe elmay differtothat of
the damaged wheel.Whenusingan
emergenc yspare wheel/spare wheelthe
handling character isticsofthe vehicle may
change.
Adapt yourstyle ofdriving accordingly.
Never operate thevehicle withmore thanone
emergenc yspare wheel/spare wheelthat
differs insize.
Only useanemergenc yspare wheel/spare
wheel ofadiffering sizebriefly anddonot
switch offESP ®
.
When usinganemergenc yspare wheel, you
must notexceed themaximum speedof
50 mph (80km/ h). G
WARNING Have
theemergenc yspare wheel/spare
wheel replaced withanew wheel assoon as
possible ataquali fiedspecialist workshop
which hasthenecessary specialistknowledge
and tools tocarry outthework required.
Mercedes-B enzrecommen dsthat youusean
authorized Mercedes-B enzCenter forthis
purpose. Inparticular, workrelevant tosafety
or on safety-related systemsmustbecarried
out ataquali fiedspecialist workshop. i
Vehicles
withoutaspare wheel/
emergenc yspare wheel arenot equipped
with atire-c hange toolkitatthe factor y.For
more informat iononwhich toolsare
required toperform awheel change onyour
vehicle, e.g.wheel chock,lug wrench or
alignment bolt,consult anauthorized
Mercedes-B enzCenter. Flat
tire
333Breakdown assistance Z

X
Prepare thevehicle asdescribed
(Y page 329).
X Ifatrailer iscoupled tothe vehicle,
uncouple it.
X Remove thefollowing items(depending on
the vehicle's equipment) fromthestowage
well under thetrun kfloor:
R the emer gencyspare wheel26
R the lugwren ch
R the foldin gwheel chock
R the jack
R the ratchet wrench
R the alignm entbolt
X Sec ure thevehic leto prev entitfro mr olling
away .
Securing thevehicle toprevent itfrom
rolling away G
WARNIN
G Only
jackupthe vehicle onlevel ground oron
slight inclines/ declines. Thevehicle could
otherwise falloffthe jack andinjure youor
others.
If your vehicle isequipped withawheel chock,
it can befound inthe vehicle toolkit
(Y page 328).
The folding wheelchock isan additional
securing measure toprevent thevehicle from
rolling away,for example whenchanging a
wheel. X
Fold both plates upwards :.
X Fold outlower plate;.
X Guide thelugs onthe lower platefullyinto
the openings inbase plate =. Securing
thevehicle onlevel ground
X On level ground: placechock sor other
suitable itemsunder thefront andrear of
the wheel thatisdiagonally oppositethe
wheel youwish tochange. Securing
thevehicle onslight downhill gradients
X On downhill gradients: placechock sor
other suitable itemsinfront ofthe wheels
of the front andrear axle.
Raising thevehicle G
WARNIN
G When
jackingupthe vehicle, onlyusethejack
which hasbeen specifically approvedby
Mercedes-B enzforyour vehicle.
The jack isdesigned exclusively forjack ingup
the vehicle atthe jack ingpoints builtintoboth
26 Vehicles withanemergenc yspare wheel. 334
Flat
tireBreakdown assistance

The
alignment boltonthe jack must be
insert edinto theinten dedjackingpoint
hole. X
Make surethatthebase ofthe jack is
positioned directlyunderthejack ingpoint.
X Turn ratchet wrench ?until jack=sits
completely onjack ingpoint ;and the
base ofthe jack liesevenly onthe ground.
X Turn ratchet wrench ?until thetire is
raised amaximum of1.2 inches (3cm) off
the ground.
Removing awhee l X
Unscrew theuppermost wheelbol t
comple tely.
X Screw alignment bolt: into thethread
instea dof the whe elbol t.
X Unscrew theremai ningwheelbol tsful ly.
! Donot placewhe elbol tsinsand oron a
dirty surface.The boltand wheelhu b
thre adscou ldothe rwisebe dama gedwh en
yo uscre wthem in. X
Re mov ethe wheel.
Mou nting anew wheel G
WAR
NING Always
replacewheel boltsth at are damage d
or rust ed.
Nev erapply oilorgreas eto wheel bolts.
Dam aged wheel hubthreads should be
repair edimm ediat ely.Donot continue to
driv eunde rth ese circum stanc es!Cont actan
auth orizedMerc edes- BenzCent eror call
Roadside Assistance.
Inc orrec twheel bolts orimproperly tightened
wheel boltscancause thewheel tocome off.
This could cause anaccident. Makesureto
use thecorrect wheelbolts. G
WARNING Only
usegenuine Mercedes-Ben zwheel bolts.
Other wheel boltsmaycome loose.
Do not tighten thewheel boltswhen the
vehicle israised. Otherwise, thevehicle could
fall offthe jack. :
Wheel boltsforallwheels suppliedbythe
factory
2 Wheel boltsforthe "Minispare"
emergency sparewheel
! Always usewheel bolts;tomount the
"Minispare" emergencysparewheel. Using
other wheel boltstomount the"Minispare"
emergency sparewheel coulddamage the
brake system. 336
Flat
tireBreakdown assistance

G
WARNING Make
suretouse theorigi nallength wheel
bolts when remou ntingtheorigi nalwhee l
after ithas been repaired.
X Cle anthe whee land whee lhub contact
surfa ces.
! Toprevent damagetothe paintwork, hold
the whee lsecure lyaga inst thewhee lhub
whi lescrewi nginthe first whee lbolt. X
Slide theemerge ncysparewhee lonto the
ali gnment boltandpushit on.
X Tigh tenthewhee lbolts untiltheyare
finger-tigh t.
X Unscrew thealignment bolt.
X Tigh tenthelastw heel boltuntil itis finger-
tight.
Low ering thevehicle X
Place theratchet wrench ontothehexagon
nut ofthe jack sothat theletters ABare
visible.
X Turn theratchet wrench untilthevehicle is
once again standing firmlyonthe ground.
X Place thejack toone side. X
Tighten thewheel boltsevenly ina
crosswise patterninthe sequence
indicated (: toA). Thetighten ingtorque
must be110 lb-ft (150 Nm). G
WARNING Have
thetighten ingtorque checked
immediately afterawheel ischanged. The
wheels couldcome looseifthey arenot
tighten edtoatorque of110 lb/ft
(150 Nm).
X Turn thejack back toits initial position and
store ittogether withtherest ofthe tire-
change toolkitinthe cargo compartmen t.
Vehicles withanemergency sparewheel:
X Wrap thedefective wheelinthe protect ive
film included withtheemergency spare
wheel andtransport thewheel inthe cargo
compartmen t.
or
X Depending onthe size ofthe wheel, you
may alsobeable tosecure thedefective
wheel inthe emergency sparewheel well.
In this case, youmust remove thestowage
tray from theemergency sparewheel well
and store itsecurely inthe cargo
compartmen t. i
When
youaredriving withthecollapsibl e
spare wheel mounted, thetire pressure
loss warning systemorthe tire pressure
monitorin gsystem cannotfunction
reliabl y.Only restart thetire pressure loss
warning system/t irepressure monitorin g Flat
tire
337Breakdown assistance Z

Note
son reg ularly inspe cting wheels
and tires G
WA
RNI NG Re
gularly che ckthe tires for dama ge.
Dam aged tires can causetireinf latio n
pre ssu reloss. Asares ult, yo ucou ldlose
contr olof your veh icle.
Wo rn,oldtir es can causeacc idents .Ift he tire
tread isworn tominimum treaddepth, orif
the tires have sustained damage,replace
them.
R Regul arlycheck thewheels andtires of
your vehicle fordamage (e.g.cuts,
punctures, tears,bulges ontires and
deformation orcrack sor severe corrosion
on wheels) atleast once amonth,as well
as after driving off-road oron rough roads.
Damaged wheelscancause aloss oftire
pressure.
R Regula rlycheck thetire tread depth and
the condit ionofthe tread across thewhole
width ofthe tire (Ypage 351). Ifnecessary,
turn thefront wheels tofull lock inorder to
inspect theinner sideofthe tire surface.
R All wheels musthaveavalve captoprotec t
the valve against dirtand moisture. Donot
mount anything ontothe valve (such astire
pressure monitoringsystems) otherthan
the standard valvecaporother valvecaps
approved byMercedes-B enzforyour
vehicle.
R Regula rlycheck thepressure ofall the tires
including theemergenc yspare wheel orthe
spare wheel, particularly priortolong trips,
and correc tthe pressure asnecessary
(Y page 353). Tire
tread G
WARNING Although
theappli cable federal motorvehicle
safety lawsconsider atire tobe worn when
the tread wearindicators (TWI)become
visible atapproximately 1
/ 16 in
(1.6 mm), we recommen
dthat youdonot allow yourtires
to wear down tothat level. Astread depth
approaches 1
/ 8 in
(3 mm), theadhesion
properties onawet road aresharply reduced.
Depending upontheweather and/orroad
surface (conditions), thetire tract ionvaries
widely .
Do not use tires thatareexcessively wornas
the tire tract iononwet road surfaces
decreases significantly whenthetread depth
is less than 1
/ 8 inch
(3mm).
Tread wearindicators (TWI)arerequired by
law. Sixindicators arepositioned onthe tire
tread. Theybecome visibleassoon asatread
depth ofapproximately 1
/ 16 inch
(1.6mm)
has been reached. Ifthis isthe case, thetire
is so worn thatitmust bereplaced.
The recommen dedtread depth forsummer
tires isat least 1
/ 8 inch
(3mm). The
recommen dedtread depth forwinter tiresis
at least 1
/ 6 inch
(4mm). Bar
marking :for tread wearisintegrated
into thetire tread. Notes
onselec ting,mounting and
replacing tires
R Only mount tiresandwheels ofthe same
type andmake.
R Only mount tiresofthe correct sizeonto
the wheels.
R Aft ermounting newtires, runthem inat
moderate speedsforthe first 60miles Operat
ion
351Wheels and tires Z