2012 MERCEDES-BENZ M-Class ECU

Symbols
Registered trademarks:
R BabySmart™ is a registered trademark of
the Siemens Automotive Corp.
R Bluetooth ®
is a registered trademark of the
Bluetooth SIG Inc.
R DTS is a registered trademark of DTS, Inc.
R Dolby and MLP are registered trademarks
of Dolby Laboratories.
R ESP ®
and PRE-SAFE ®
are registered
trademarks of Daimler AG.
R HomeLink ®
is a registered trademark of
Prince, a Johnson Controls Company.
R iPod ®
and iTunes ®
are registered
trademarks of Apple Inc., registered in the
USA and in other countries.
R Logic 7 ®
is a registered trademark of
Harman International Industries,
Incorporated.
R Microsoft ®
is a registered trademark of the
Microsoft Corporation in the USA and in
other countries.
R SIRIUS and associated brands are
registered trademarks of SIRIUS XM Radio
Inc.
R HD Radio and associated brands are
registered trademarks of the iBiquity
Digital Corporation.
R Windows Media ®
is a registered trademark
of the Microsoft Corporation in the USA and
in other countries.
R Gracenote ®
is a registered trademark of
Gracenote, Inc.
R ZagatSurvey ®
and associated brands are
registered trademarks of Zagat.
In this Operator's Manual, you will find the
following symbols:GWARNING
Warning notes draw your attention to hazards
that endanger your health or life, or the health
or life of others.
! These warning notes draw your attention
to hazards that could cause damage to your
vehicle.
i This symbol indicates useful instructions
or further information that could be helpful
to you.XThis symbol designates an
instruction you must follow.XSeveral consecutive symbols
indicate an instruction with several
steps.Y PageThis symbol tells you where you
can find further information on a
topic.YYThis symbol indicates a warning or
an instruction that is continued on
the next page.DisplayThis font indicates a display
message in the multifunction
display/COMAND display.
Parts of the software in the vehicle are
subject to copyright according to ©
2005
The FreeType Project
http://www.freetype.org. All rights
reserved.

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

Lane
detection (autom atic)
see LaneKeeping Assist
Lane Keeping Assist
Ac tivat ing/deac tivating................. 233
Displ aymessa ge............................ 259
Function/inform ation.................... 200
Lane Tracking package..................... 198
LA TCH-type (ISOF IX)childseat
ancho rs................................................ 57
Le vel control (display messag e)...... 258
Le vel control (vehiclewith
AI RMATIC package )
Basi csettings ................................ 182
Function/notes ............................. 181
Importa ntsafe tynotes .................. 181
Lic ens eplate lamp(display
messag e)............................................ 252
Lig hting
see Ligh ts
Lig hts
Activating/d eactivating the
interio rlight ingdelayed switch-off.2 35
Automa tichea dlamp mode ............ 110
Displ aymessa ge............................ 250
Driving abroad ............................... 108
Hazard warning lamps ................... 111
High beamflasher .......................... 111
High-b eamheadlamps ................... 111
Ligh tswitc h................................... 108
Low-b eamheadlamps .................... 109
Parki nglamps ................................ 108
Rea rfog lamp ................................ 110
Setting thebrightness ofthe
amb ient lighting (on-boa rd
compu ter)...................................... 234
Setting thecolor ofthe amb ient
lig hting (on-boa rdcompu ter)......... 235
Switchi ngAdap tiveHighb eam
Assist on/off ................................. 234
Switchi ngthe daytime running
la mps on/off (on-boa rd
compu ter)...................................... 234
Switchi ngthe daytime running
la mps on/off (switch) .................... 109
Switchi ngthe exterio rlight ing
delayed switch-offon/ off(on-
board computer )............................ 235Switchi
ngthe surro undlighting
on/off (on-boa rdcompu ter).......... 235
Turn signa ls................................... 111
see Changing bulbs
see Interior lighting
Lig htsen sor (display messag e)....... 253
Lo ading guidelines ............................ 284
Lo cki ng
see Centra llockin g
Locking (doors)
Automat ic........................................ 79
Emergency locking........................... 80
From inside(central locking
button) ............................................. 79
Lo cki ng centrally
see Centra llockin g
Locking verification signal(on-
board comput er)............................... 236
Lo w-be amheadlamps
Cha nging bulbs.............................. 116
Displ aymessa ge............................ 250
Setting fordrivi ngabr oad
(sy mmetrica l)................................. 108
Switchi ngon/off ........................... 109
Lugg ageholde r(EASY-P ACKload-
secur ingkit).................................... ...2 91
Lumbar support ................................... 99 M
M+S
tires ...................................... ...... 352
Mainte nance
see ASSYST PLUSserviceinterva l
dis pla y
Malfunc tionmessag e
see Displ aymessa ges
Malfunc tionsrele vant tosafety
Rep orting ......................................... 25
Matte finish(clean ing
ins truction s)...................................... 320
mbrace Callprio rity.................................... 303
Displ aymessa ge............................ 245
Downlo ading desti nations
(C OMAND) ..................................... 303
Emergency call.............................. 300
Importa ntsafe tynotes .................. 299
Locati ngastolen veh icle. .............. 304 12
In
dex

Admi
nistration(NH TSA) inad ditio nto
noti fying Merced es-BenzUSA, LLC.
If NHT SArece ivessimil arcomp laints ,it ma y
op en aninve stigatio n,and ifit find stha ta
safety defect existsinagroup ofvehicles, it
may order arecall andremedy campaign.
However, NHTSAcannotbecome involved in
individua lproblems betweenyou,your
deale r,or Mercedes-Benz USA,LLC.
To cont actNHTSA ,you may calltheVehicle
Safety Hotline toll-free at
1-88 8-327-4236(TTY: 1-800-42 4-9153);go
to: http://www .safercar.gov;orwrite to:
Administrator ,NHTSA Headqua rters,
1200 NewJersey Avenue, SE,West Building,
Washington, DC20590 .
You canalso obtain additional information
abou tvehicle safety from:
htt p://ww w.safer car.gov. Limited
Warrant y
! Follow theinstruct ions inthis manual
about theproper operation ofyour vehicle
as well asabout possible vehicledamage.
Damage toyour vehicle thatarises from
culpable contraven tionsagainst these
inst ruct ions arenot cover edeither by
Mercedes- BenzLimited Warrantyor by the
New orUsed-Veh icleWarrant yof
Daimler AG. Data
storedinthe vehicle Inform
ationabout electronic data
acquisit ioninthe vehicle
(Inc luding notice pursuant toCalifornia Code
§ 995 1)
Your vehicle recordselectr onicdata. Ifyour
vehicle isequipped withmbrace 2
, data is
tran smitt edinthe event ofan acciden t. This
information helps,forexample, totest
vehicle systems afteranacciden tand to
con tinually improve vehiclesafety.
Daimler AGcan access thisdata andsubmit
it:
R for safety research orvehicle diagnosis
purposes
R with theconsent ofthe vehicle owner
R on the instruct ionofprosecut ing
authorit ies
R for use inarbitrat ionofdisputes that
involve Daimler AG,itsaffiliates orits sales
and servic eorganiz ations
R as other wiserequired orpermit tedbylaw.
Please observe thembrace 2
purchase
agreement forfurth erdetails onthe recor ding
and transfer ofdata bythis system.
2 The system iscalled TELEAIDinCanada. 26
Introd
uction

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

ribs
orabd omen, whichcould severel y
injure internal organssuchasyou rliver or
spleen .
Adj ust the seat beltsothat theshoulder
sect ionislocat edasclos eas possible to
the middle ofthe shoulder .Its hould not
touch theneck .Never pass theshoulder
portion ofthe seat beltunder yourarm. For
this purpose, youcan adjust theheight of
the seat beltoutlet.
R Position thelapbelt aslow aspossible on
your hipsandnotacross theabdomen. If
the lapbelt isposition edacross your
abdomen, itcould cause serious injuries in
a crash.
R Never wearseatbelts overrigid or
breakable objectsinor on your clothing,
such aseyeglasses, pens,keysetc.,as
these might cause injuries.
R Make suretheseat beltisalway sfitt ed
snugly. Takespecial careofthis when
wearing looseclothing.
R Never useaseat beltformore thanone
person atatime. Donot fasten aseat belt
around aperson andanoth erperson or
other objectsat the same time.
R Seat belts should notbeworn twisted. Ina
crash, youwould nothave thefullwidth of
the seat belttodistribut eimpact forces.
The twisted seatbeltagainst yourbody
could cause injuries.
R Pregnant womenshouldalsoalway suse a
lap-shoulder belt.Thelapbelt portion
should bepositioned aslow aspossible on
the hips toavoid anypossible pressure on
the abdomen.
R Place theseat backrest inaposition thatis
as upright aspossible.
R Check yourseatbeltduring traveltomake
sure itis properly positioned.
R Never placeyourfeetonthe instr ument
panel, dashboard, oron the seat. Always keep
bothfeetonthe floor infront ofthe
seat.
R When usingaseat belttosecure infant
restraint s,toddler restraint s,or children in
booster seats,alwaysfollow thechild seat
manufacturer' sinstr uctions. G
WARNING Do
not pass seatbelts oversharp edges. They
could tear.
Do not allow theseat belttoget caught inthe
door orinthe seat adjustmen tmechanism.
This could damage theseat belt.
Never attempt tomake modifications toseat
belts. Thiscould impair theeffect iveness of
the seat belts.
Fastening seatbelts 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 seat whenever possible.
Regardless ofseating position, children12
years oldand under mustbeseated and
properly securedinan appropriately sized
child restraint systemorbooster seat
recommen dedforthe size andweight ofthe
child. Foradditional information,seethe
"Child reninthe vehicle" section.
Ac hild's riskofserious orfatal injuries is
significantly increasedifthe child restraint s
are not properly securedinthe vehicle and/
or the child isnot properly securedinthe child
restraint . Occ
upant safety
51Safety Z