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

Notes
onoillevel /consumption ....313
Visco sity........................................ 388
ESP ®
(E lec tronic Stability
Program) 4ETS ................................................ 63
Deactiva ting/activa ting................... 64
Displ aymessa ge............................ 239
Function/notes ................................63
Importa ntsafe tyinforma tion........... 63
Trai lerstabi lization ........................... 64
Warni nglamp ....... .......................... 273
Exhaus tchec k................................... 158
Exte riorlighting
see Ligh ts
Exte riormirrors
Adjusting ....................................... 103
Dippi ng(automa tic)....................... 104
Fold ingin/ou t(auto maticall y)....... 104
Fold ingin/ou t(electr ically) ........... 103
Fold inginwhe nlockin g(on-board
computer) ...................................... 237
Out ofposi tion (trou bleshoo ting) ...104
Setting ........................................... 103
Storing settings (memory
function) ........................................ 105
Storing theparking position .......... 104
Eye glas sescompartm ent................. 285 F
Fi
lle rc ap
see Fuel filler flap
Fi rst-aid kit....... .............. .................... 328
Fl at tire
Cha nging awhe el/mo unting the
spa rewhe el................................... 333
MOExtended run-flatsyst em ......... 338
Prep aring the vehi cle..................... 329
Ra ising the vehi cle......................... 334
TIR EFIT kit....... ...............................330
Fl oo rmat .............................................3 08
Fo ldin gthe rear benchseat
forw ards/bac k.................................. 287
Fo rding
Off-road ......................................... 161
On floo ded road s........................... 161
Fron twindsh ield
see Winds hield Fuel
Addit ives........................................ 387
Displayin gthe curr ent
con sumpt ion.................................. 227
Displ aying the range ...................... 227
Driving tips.................................... 158
Flexi blefuel vehicles ...................... 385
Fuel gauge....................................... 29
Importa ntsafe tynotes .................. 385
Premi um-gra deunle adedgas oline .3 85
Prob lem(malfunction) ................... 152
Ref ueling ....... ..................... ............ 149
Specifi cations ................................ 386
Tank content/reserve fuel............. 384
Fue lfill er flap
Openi ng/closi ng............................ 150
Fue lfilte r(dis play mess age)............ 257
Fue llev el
Ca lling up the range (on-boa rd
compu ter)...................................... 227
Fue ltank
Ca paci ty........................................ 384
Prob lem(malfunction) ................... 152
Fuse s
Allo cation chart............................. 346
Before changing............................. 346
Dashb oardfusebox....................... 346
Fuse boxinthe engine
compa rtment ................................. 346
Fuse boxunde rrear bench seat....347
Importa ntsafe tynotes .................. 345 G
Garage
dooropener
Cl eari ngthe memory ..................... 308
Notes ............................................. 305
Openi ng/closi ngthe gara gedoor ..308
Progra mming (button inthe rear -
view mirror) ................................... 306
Gasol ine............................................. 150
Gear orsel ector lever(clean ing
guide lines) ......................................... 324
Genui neMerce des-Be nzparts ......... 380
Glo vebox ........................................... 285
GTW (Gros sTrailer Weight)
(defi nition) ......................................... 37210
In
dex

Tire
pres sure
Ca lling up(on-bo ardcomp uter)..... 359
Che cking manually ........................ 357
Displ aymessa ge............................ 263
Maxi mum ....................................... 356
Notes ............................................. 355
Not reach ed(TIR EFIT) .................... 332
Press ureloss warning .................... 357
Rea ched (TIREFIT) .......................... 332
Reco mmended ...............................353
Tire pressure monitoring system
Function/notes ............................. 359
Res tarting ...................................... 361
Warni nglamp ....... ....... .............. ..... 280
Tires
Aspect ratio(definitio n)................. 373
Averag ewei ght ofthe vehi cle
occup ants(definitio n).................... 371
Bar (definitio n)............................... 371
Cha racteri stics.............................. 371
Che cking ........................................ 351
Definiti onofterms ......................... 371
Direction ofrotatio n...................... 375
Displ aymessa ge............................ 263
Distrib utionofthe vehicle
occupants (definition) .................... 374
DOT, TireIdentifi cationNumber
(TIN) .................. ...... ................ .......3 70
DOT (Depa rtment of
Transp ortation)(de finitio n)............ 371
GAWR (Gross Axle Weight Rating)
(de finitio n)..................................... 372
GTW (Gross TrailerWei ght)
(de finitio n)..................................... 372
GVW (Gross VehicleWei ght)
(de finitio n)..................................... 372
GVW R(G ross VehicleWei ght
Ra ting) (definitio n)......................... 372
Importa ntsafe tynotes .................. 350
Increase dvehi cleweight due to
optio nalequ ipme nt(de finitio n)...... 372
Kil opa scal (kPa)(de finitio n)........... 372
Lab eling (ove rview )........................ 367
Load bearing index (definitio n)...... 373
Load index ..................................... 370
Load index (definitio n)................... 372
Maxi mum loaded vehicleweight
(de finitio n)..................................... 372Maxi
mum loadon atire
(de finitio n)..................................... 373
Maxi mum permi ssibletire
press ure(definitio n)....... .............. ..373
Maxi mum tireload......................... 365
Maxi mum tireload(de finitio n)....... 373
Optio nalequ ipme ntwei ght
(de finitio n)..................................... 373
PSI (pounds persquare inch)
(de finitio n)..................................... 373
Rep lacing ....................................... 374
Service life..................................... 351
Side wall(de finitio n)....................... 373
Speed rating(definitio n)................ 372
Storing ........................................... 375
Structure andchara cteristics
(de finitio n)..................................... 371
Temp erature.................................. 367
TIN (Tire Identifi cationNumber)
(de finitio n)..................................... 373
Tire bead(definit ion)...................... 373
Tire press ure(definiti on)................ 373
Tire press ures(recom mended )...... 371
Tire size (data) ............................... 375
Tire size designatio n,loa d-bea ring
capa city, speedrating .................... 368
Tire tread ....................................... 351
Tire tread (definitio n)..................... 373
Total loadlim it(de finitio n)............. 374
Tracti on......................................... 366
Tracti on(de finitio n)....................... 374
Trea dwear ..................................... 366
TWR (permissi bletrail erdra wba r
nosew eight) (definitio n)................. 374
Uniform TireQualityGrading
Standard s...................................... 366
Uniform TireQualityGrading
Standard s(definit ion).................... 371
Unla denweight (definiti on)............ 372
Wea rindi cato r(definit ion)............. 374
Whee lrim (defin ition).................... 372
see Flat tire
Top Tether ............................................ 58
Towi ng
Importa ntsafe tygui del ines ........... 343
Install ingthe towi ngeye................ 343
Rem oving thetowi ngeye. .............. 344 18
In
dex

Tow
ingat rail er
Activ ePark ing Assist ..................... 189
Cl eani ngthe trail ertow hitch .........322
Cou pling up atrail er...................... 215
Decoup lingatrail er....................... 217
Driving tips.................................... 210
Importa ntsafe tynotes .................. 210
Install ingthe ballcoup ling............. 214
Ligh tsdis pla ym essage .................. 250
Mou nting dimensions .................... 391
Pow ersup ply................................. 219
Pul ling away with atrail er.............. 141
Rem oving theballcoup ling............ 218
Shift range ..................................... 147
Storing theballcoup ling................ 218
Trai lerloads................................... 391
Towi ngaway
With both axleson the grou nd....... 344
Tow-s tarting
Emergency enginestarting ............ 345
Importa ntsafe tynotes .................. 343
Trailer couplin g
see Towingatrail er
Trailer loadsanddrawbar
nos eweig hts ...................................... 218
Trailer towing
Active BlindSpotAssist ................. 205
Active LaneKeepingAssist ............ 208
Blind SpotAssist ............................ 200
ESP ®
................................................ 64
PARKT RONIC................................. 185
Permi ssibletrail erloa dsand
dra wba rnoseweights ..................... 218
Transmiss ion
see Automa tictransmis sion
Transporting thevehi cle .................. 345
Traveli nguphill
Brow ofhill....... ..............................166
Driving downhill ............................. 167
Maxi mum gradient-clim bing
capa bility ....................................... 166
Trim pieces(clean inginstruction s).3 24
Trip computer (on-bo ard
co mputer) .......................................... 227
Trip meter
see Trip odom eter Trip
odome ter
Ca lling up ....... ..................... ...........227
Res etting (on-boa rdcompu ter)...... 228
Trunk
see Tailga te
Turn signals
Displ aymessa ge............................ 251
Switchi ngon/off ........................... 111
TWR (TongueWeight Rating)
(defi nition) ......................................... 374
Type identification plate
see Vehi cleidentificati onplate U
Unl
ocking
Emergency unlocking ....................... 80
From insidethe vehi cle(central
unlo cking button) ............................. 79 V
Vanity
mirror(insun visor).............. 295
Vehic le
Corr ectuse ...................................... 25
Data acquisition ............................... 26
Displ aymessa ge............................ 265
Equi pment ....................................... 21
Indivi dualsett ings .......................... 233
Limi tedWarr anty ............................. 26
Load ing.......................................... 362
Locking (inanemerg ency)............... 80
Locking (SmartKe y)....... ................... 73
Lowe ring........................................ 337
Mai ntenance .................................... 22
Parki ngfor along period....... .........157
Pul ling away ................................... 141
Ra ising ........................................... 334
Rep orting problems ......................... 25
Tow ingaway .................................. 343
Transp orting.................................. 345
Unlocking (inanemerg ency)........... 80
Unlocking (SmartKey)...................... 73
Vehi cledata ................................... 390
Vehic lebattery
see Battery (vehicle)
Vehic ledata ....................................... 390
see Techni caldata In
dex
19

Since
theairb ag inflate swithcon siderable
speed andforce, aproper seatingposit ion
and correctposit ioningof the hands onthe
ste erin gwheel willhelp tokeep youatasafe
dist ancefro mt heair bag. Occupants whoare
not wearing theirseatbelt, arenot seated
properly orare too close tothe airbag canbe
seriously injuredorkilled byan air bag asit
inflates withgreat forceinstant aneously :
R Sit with theseat beltproperly fastened ina
position thatisas upright aspossible with
your back against theseat backrest.
R Move thedriver's seatasfar back as
possible, stillpermittin gproper operation
of vehicle controls. Thedistance fromthe
cent erofthe driver's chesttothe cent erof
the airbag cover onthe steering wheel
must beatleast 10inches (25cm) ormore.
You should beable toaccomplish thisby
adjusting theseat andsteering wheel.If
you have anydifficulties, pleasecontactan
authorized Mercedes-Ben zCent er.
R Do not lean your head orchest closetothe
steerin gwheel ordashboard.
R Only holdthesteerin gwheel bythe rim.
Placing handsandarms inside therim can
incr ease therisk and poten tialseverit yof
hand/arm injurywhenthedriver frontair
bag inflates .
R Adj ust the fron t-passenger seatasfar back
as possible fromthedashboard whenthe
seat isoccupied.
R Occ upants, especially children,should
never placetheirbodies orlean their heads
in the area ofthe door where theside
impact airbag inflates .This could result in
serious injuries ordeath should theside
impact airbag bedeploy ed.Always sitas
upright aspossible, weartheseat belt
properly anduseanappropriately sized
child restraint ,infant restraint orbooster
seat recommen dedforthe size andweight
of the child.
Failure tofollow theseinstruct ionscanresult
in severe injuries toyou orother occupants. If
you sellyour vehicle, itis important thatyou
make thebuyer aware ofthis safety
information. Besure togive thebuyer this
Operator's Manual. G
WARNING Acc
ident research showsthatthesafest place
for children inan automobile isin arear seat.
As ide impact airbag relat edinjury may occur
if occ upant s,espec iallychildr en,are not
proper lyseate dor rest raine dwhen next toa
side impact airbag which needs todeploy
rapidly inaside impact inorder todo itsjob.
To help avoid thepossibili tyof injury, please
follow theseguidelines:
(1) Always sitasupright aspossible
and usetheseat belts properly.
Make surethatchildren 12years
old and under useanappropriately
sized childrestraint ,infant
restraint ,or booster seat
recommen dedforthe size and
weight ofthe child.
(2) Always wearseatbelts properly.
The airbags areonly deploy edifthe airbag
cont rolunit detects theneed fordeploy ment.
Only inthe event ofsuch asituation willthey
provide theirsupplemental protection.
The driver andpassenger shouldalwayswear
their seatbelts. Otherwise, itis not possible
for the airbags toprovide theirsupplemental
protect ion.
In the event ofother types ofimpacts and
impacts belowairbag deploy ment
thresholds, theairbags willnotdeploy .The
driver andpassengers willthen beprotect ed
to the exten tpossible byaproperly fastened
seat belt. Aproperl yfastened seatbeltisalso
needed toprovide thebest possible
protect ioninarollover.
Air bags provide additional protection;they
are not, however, asubstitute forseat belts.
All vehicle occupants mustfasten theirseat
belts regardless ofwhether yourvehicle is
equip pedwith airbags ornot. Occ
upant safety
41Safety Z

It
is important foryou rsafet yand that ofyour
passe ngerto have deplo yedairbags replaced
and tohave anymalf unctionin gair bags
repai red.This willhelp tomak esure theair
bags continue toperf orm their pro tective
fun ction fortheveh icle occupan tsinthe
eve ntofacr ash.
Fron tair bag s The
fron ta irbags increase protection forthe
drive r'sand front-pass enger's head and
ches t. Dr
iver' sair bag :deploys infro ntofthe
st eerin gwheel; front-pass engerfro ntair
bag ;deploys infro ntofand above theglove
box.
They aredeployed:
R in the even tof cer tain frontal impac ts
R ifthe syst emdete rmin esthat airbag
deploymen tcan offeraddit ionalpro tection
to that pro vide dby theseat belt
R ifth eseat beltisfast ened
R ind epen dentlyofother airbags inthe
veh icle
If th eveh icle overturn s,thefron tairbags are
gen erally notdeployed unlessthesyst em
dete ctshigh vehic ledecele ration ina
long itudin aldirec tion.
Your vehic lehas adaptiv e,two- stage frontair
bags. Inthe even tofa collisio n,the airb ag
co ntrol unit evaluat estheveh icle
dec eler ation.Inthefir st deplo ymentstag e,
the frontairb ag isfille dwit hen ough
pro pellan tgas toreduc eth er isk ofinjuries. The
frontair bag isfully deployed ifaseco nd
deploymen tthreshold isexceeded withina
few milliseconds.
The deploy mentofthe front -passenger front
air bag isalso influenced bythe weight
category ofthe front passenger, whichis
determined bythe Occupant Classification
System (OCS)(Ypage 44).
The lighter thepassenger sideoccupant, the
higher thevehicle deceleration raterequired
(predicted atthe start ofthe impact) for
second stageinflation ofthe front -passenger
front airbag. Inthe second stage,thefront
air bags areinflated withthemaximum
amount ofpropella ntgas availa ble.
The front airbags arenot deploy edin
situations wherealow impact severity is
predicted. Youwillthen beprotect edbythe
fastened seatbelt.
The front -passenger frontairbag willonly
deploy if:
R the system, basedonthe OCS weight
sensor readings, detectsthat thefront -
passenger seatisoccupied.
R the 45 indicatorlampinthe cent er
console isnot lit,(Ypage 44).
R the airbag cont rolunit predicts ahigh
impact severity.
Driver's kneebag 42
Occ
upantsafetySafety

not
engaged inthe seatbelt buckle), theside
impact airbag onthe fron t-passenger side
will notdeploy. Theside impact airbag onthe
fron t-passenger sidewilldeploy ifthe fron t-
passenger seatbeltisfasten ed,regardless of
whether thefron t-passenger seatisoccupied
or not .
Window curtainairbags The
window curtainairbags enhanc ethe level
of protec tionforthe head, butnot chest or
arms, ofthe vehicle occupan tson the side of
the vehicle onwhich theimpact occurs.
The window curtainairbags areintegrated
int othe side ofthe roof frame anddeploy in
the area from theA-pillar tothe C-pillar. Window
curtainairbags :are deployed:
R on the side onwhich animpact occurs
R at the start ofan acciden twith ahigh rate
of lateral vehicle deceleration or
accelerat ion,e.g. inas ide impac t
R regar dless ofwhet herthefront-pass enger
seat isocc upied
R indep endently of seat beltuse
R ifthe vehic leover turns and thesyst em
dete rmin esthat window curtainairbag
deploymen tcan offeraddit ionalpro tection
to that pro vide dby theseat belt
R ind epen dentlyofthefron ta irbags
Windo wcurt ainairbags :will notdeploy in
impac tswith decele ration rates which donot
exc eed thesyst em's prese tdeployment
thr esholds forvehicle deceleration oraccelerat
ion.You willthen beprotec tedby
the fasten edseat belt. Occupant
Classification System
(OCS)
How theoccupant classification
system works The
Occupant Classification System(OCS)
categor izestheoccupan ton the fron t-
passenger seatbymeans ofaweight sensor.
The front-passenger frontairbag is
deact ivatedautom atically forcertain weight
cat egorie s.The
45 indic
atorlamp
shows youthecurr entstatus. Ifthe
45 indicatorlamp isilluminat ed,the
fro nt-pass engerfro ntair bag isdeact ivated.
The systemdoes notdeact ivate:
R the side impac tairbag
R the window curtainairbag
R the Emergen cyTens ionin gDev ices
To be class ifiedcorrectly, the frontpassen ger
must sit:
R with theseat beltfastened correctly
R in aposit ionthat isas upright aspossible
with theirback against theseat backrest
R with theirfeet onthe floor
If the front-pass enger's weight istransf erred
to anot herobject inthe vehic le(e.g .by
leanin gon armr ests),OCS maynotbeable to
approx imatethe occupant 'sweight category.
If the front-pass engerseat ,the seat coveror
the seat cushio naredama ged,have the
necessary repairwork carrie dout atan
au thorized Mercede s-BenzCenter.
For safety reasons,Mercede s-Benz
recommends thatyouonly useseat
accesso rieswhichhave been approved by
Mercede s-Benz.
Both thedrive rand the passe nge rshould
alwa ysuse the45 indicatorlampas
an indication ofwhether ornot thepassenger
is properly positioned. 44
Occ
upantsafetySafety

G
WARNING If
the 45 indicatorlamp illumina tes
when anadu ltor someone largerthan asmal l
indivi dualis in the front passenger seat,have
the front passenger repositionhimse lfor
hersel fint he seat until the45
indicator lampgoesout.
In the event ofacollision, theairbag cont rol
unit willnotallow frontpassenger frontairbag
deploy mentwhen theOCS hasclassified the
front passenger seatoccupant asweighing as
much asorless than atypical 12-month-old
child inastandard childrestraint orifthe front
passenger seatisclassified asbeing empty.
When theOCS senses thatthefront
passenger seatoccupant isclassified as
being uptoor less than theweight ofatypical
12-m onth-oldchild inastandard child
restraint ,the 45 indicatorlampwill
illu minate whentheengine isstarted and
remain illuminated. Thisindicates thatthe
front passenger frontairbag isdeactivated.
When theOCS senses thatthefront
passenger seatisclassified asbeing empty,
the 45 indicatorlampwillilluminate
when theengine isstarted andremain
illu minated. Thisindicates thatthefront
passenger frontairbag isdeactivated.
When theOCS senses thatthefront
passenger seatoccupant isclassified as
being heavier thantheweight ofatypical 12-
mont h-old childseated inas tand ardchi ld
res traint oras being asma llind ividu al(such
as ayo ung teenag eror as mall adult),the
45 indicatorlamp willill umina tefor
app roximatel y6s econ dswhen theengine is
start ed.Depen dingonoccupant weight
sensor readings fromtheseat, itwill then
remain illuminated orgo out. With the
45 indicatorlamp illuminated, the
fron tpassen gerfron ta irbag isdeact ivated.
With the45 indicatorlamp out,the
fro ntpassen gerfrontair bag isact ivate d.
When theOCS senses that thefront
passen gerseat occupant isclassif iedasan
adult orsomeo nelarger thanasmall indiv
idual, the45 indicatorlamp will
illuminat efor approx imatelysix seco nds
when theengin eis star ted and thengoout.
This indicates thatthefront passenger front
air bag isactivated.
If the 45 indicatorlampisilluminated,
the front passenger frontairbag is
deactivated andwillnotbedeployed.
If the 45 indicatorlampisnot
illuminated, thefront passenger frontairbag
is activated andwillbedeployed
R in the event ofcert ainfront alimpacts
R ifthe impact exceeds apredetermin ed
triggering threshold
R independent ofthe side impact airbag or
pelvis airbag
If the front passenger frontairbag is
deployed, therate ofinflation willbe
influenced by
R the rate ofvehicle deceleration asassessed
by the airbag cont rolunit
R the front passenger's weightcategory as
identified bythe OCS
For further informat ion,see"Air bag display
messages" (Ypage 249). G
WARNING Acc
ording toaccident statistics,children are
safer when properly restrained onthe rear
seats thanonthe front -passenger seat.Thus,
we stron glyrecommen dthat children be
placed inthe rear seats whenever possible.
Regardless ofseating position, children12
years oldand under mustbeseated and
properly securedinan appropriate infant
restraint ,toddler restraint ,or booster seat
recommen dedforthe size andweight ofthe
child.
The infant orchild restraint mustbeproperly
secured withthevehicle's seatbelt, theseat
belt andTopTether strap,orlower anchors
and TopTether strap,fullyinaccordanc ewith
the child seatmanufacturer' sinstr uctions. Occupant
safety
45Safety
Z

Occupants,
especiallychildren, shouldalways
sit asupright aspossible ,wear theseat belt
properly anduseanappropria telysized infant
restraint, toddlerrestraint, orbooster seat
recommended forthe size andweight ofthe
child.
Child rencan bekilled orseriousl yinjured by
an inflating airbag. Note thefollowi ng
important information whencircumstances
require youtoplace achild inthe front -
passenger seat:
R Your vehicle isequip pedwith airbag
technology designedtodeactivate the
front -passenger frontairbag inyour vehicle
when thesystem sensestheweight ofa
typical 12-mon th-oldchildorless along
with theweight ofastandard appropria te
child restraint onthe front -passenger seat.
R Ac hild inarear-facing childrestraint onthe
front -passenger seatwillbeseriously
injured oreven killed ifthe front -passenger
front airbag inflates inacollision which
could occur under somecircumstan ces,
even withtheairbag techn ology installed
in your vehicle. Theonly means toeliminate
this riskcompletely isnever toplace achild
in arear-facing childrestraint inthe front -
passenger seat.Wetherefore strongly
recommen dthat youalwa ysplace achild
in arear-facing childrestraint onthe rear
seat.
R Ifyou install arear-facing childrestraint on
the front -passenger seat,make surethe
45 indicatorlampisillu minated,
indicating thatthefront -passenger frontair
bag isdeactivated. Shouldthe45
indicator lampnotilluminate orgo out while
the restraint isinstalled, pleasecheck
installation. Periodicallycheck the
45 indicatorlampwhile driving to
make surethatthe45 indicator
lamp isillu minated. Ifthe 45
indicator lampgoesoutorremains out,do
not transport achild onthe front -passenger
seat until thesystem hasbeen repaired. Ac
hild inarear-facing childrestraint onthe
front -passenger seatwillbeseriously
injured oreven killed ifthe front -passenger
front airbag inflates.
R Ifyou place achild inaforward-facing child
restraint onthe front -passenger seat:
- move theseat asfar back aspossible
- use theproper childrestraint
recommen dedforthe age, sizeand
weight ofthe child
- secure childrestraint withthevehicle's
seat beltaccording tothe child seat
manufacturer's instructions
R For children largerthanthetypical 12-
mont h-old child, thefront -passenger front
air bag may ormay notbeactivated.
If the driver's airbag deploy s,this does not
mean thatthefront -passenger frontairbag
also hastodeploy .
The OCS mayhave detected thattheseat:
R was empty oroccupied byaperson witha
weight ofup toor less than thatofatypical
12-m onth-oldchild seated inastandard
child restraint
R was occupied byasmall individua l,such as
a young teenager orasmall adult
R was occupied byachild inachild restraint
system, whoseweight isgreater thanthat
of atypical 12-month-oldchild.
These areexamples ofwhen theOCS
deactivates thefront -passenger frontairbag.
Deactivation takesplacealthough the
collision fulfillsthecriteria fordeploy ingthe
driver's airbag. 46
Occ
upant safetySafety

If
the SmartKey hasbeen removed fromthe
ignition lockorisin positio n0, indicator lamp
45: doesnotlightup. G
WARN
ING If
the red 6 SRSwarning lampinthe
inst rument clusterandthe45
indicat orlamp lightupsimultan eously,the
OCS ismalfunc tioning. Thefrontpassen ger
fr on ta irbag willbedeact ivatedin this case.
Have thesyst emchec kedbyqualified
tec hnic ians assoon aspossible .Contac tan
auth orizedMer cedes-Ben zCent er.
Only have theseat repaired orreplaced atan
authorized Mercedes-BenzCenter .
In order toensure properoperation ofthe air
bag system andOCS:
R Sit with theseat beltproperly fastenedina
position thatisas upright aspossible with
your back against theseat backr est.
R When seated, apassenger shouldnot
position him/herselfinsuch away asto
cause thepassenger' sweight tobe lifted
from theseat cushion asthis may result in
the OCS being unable tocorr ectly
approximat ethe passenger' sweight
categor y.
R Read andobserve allwarnings inthis
chapter .
System self-test If
an adult occupant isproperly sitting onthe
passenger seatandtheOCS classifies the
occupant asan adult, the45 indicator
lamp illuminates andgoes outagain after
approximat ely6secon ds.
If the seat isnot occupied andtheOCS
classifies thefron tpasse nger seat asbein g
uno ccupied, the45 indicat orlamp
will illumin ateand notg oout. G
WARNIN
G If
the 45indic atorlamp doesnot
illuminat e,the syst emisnot func tioning. You
must contactan author izedMerc edes- Benz Cent
erbefor eseatin gany child onthe front
passen gerseat.
For more informat ion,see"Problem swith the
Occ upant Classific ationSystem"
(Y page 48). G
WARN
ING Never
placeanything betwee nseat cushion
and child seat(e.g. apillow), sinceitreduces
the effec tivenessofthe OCS. Theunderside
and rear side child restraintsystem mustbe
placed entirely onthe seat cushion andthe
backr estofthe fron t-passenger seat
backr est.
If neces sary,adjust thetiltofthe passenger
seat backr est.
An incor rectlymount edchild seatcould cause
injuries tothe child incase ofan acciden t,
inst ead ofincr easing protectionforthe child.
Follow themanufact urer'sinstruct ions for
inst allation ofchild restraintsystems. Occupant
safety
47Safety Z

Problems
withtheoccupant classific ationsystem Problem Possible
causes/co nsequences andM Solutions
The
45
indicator lamp
illu minates and
remains illuminated.
The person onthe
front -passenger seat:
R has theweight ofa
typical adult
R has been determined
by the system notto
be achild. The
OCS ismalfunction ing.
X Have theOCS check edassoon aspossible atan authorized
Mercedes-B enzCenter.
X Observe theadditional displaymessages inthe multifunct ion
display (Ypage 249). G
WARNING If
the 45 indicatorlampilluminates andremains illuminated whentheweight ofatypical
adult orsomeone largerthanasmall individual hasbeen detect edon the passenger seat,donot
allow anyoccupant touse thepassenger seatuntil thesystem hasbeen repaired. Problem Possible
causes/co nsequences andM Solutions
The
45
indicator lampdoesnot
illu minate and/or does
not remain illuminated.
The front -passenger
seat is:
R unoccupied
R occupied witha
weight uptoor less
than atypical 12-
mont h-old childina
standard child
restraint system The
OCS ismalfunction ing.
X Make surethere isnothin gbetween theseat cushion andthe
child seat.
X Check theinstallation ofthe child restraint system.
X Make surethatnoobject sareapp lying add itiona lwei ght onto
the seat.
X Ifthe 45 indicatorlamp doesnotillumina te,have the
OCS checked assoon aspossi bleatan authorized Mercede s-
Benz Center. Donot transport achild onthe front-passenge r
seat aslong asthe OCS isnot functioning.
X Observe theadditiona ldisp laymessa gesinthe multi function
disp lay(Ypag e249). G
WARNING If
the 45 indicatorlamp doesnotillumina teor remai nsout with theweight ofatypi cal
12-month-old childinastandard childrestrai ntor less, orisunoccup ied,on the front-passenge r
seat, donot transport achild onthe front -passenger seatuntil thesystem hasbeen repaired. 48
Occ
upant safetySafety