2012 MERCEDES-BENZ M-Class key battery

Swi
tching seatheating on/off......... 99
Switchi ngsea tventila tionon/off ..100
Sec uring hooks....... ..................... ...... 288
Sen sors (clean inginstruction s)....... 322
Servi ce
see ASSYST PLUSserviceinterva l
dis pla y
Servi ceinte rval display
Displ aying servi cemessa ges......... 317
Hidi ngservi cemessa ges............... 317
Notes ............................................. 318
Service messages.......................... 317
Servi cemenu (on-bo ardcomputer) .233
Servi ceproducts
Brake fluid..................................... 389
Ca paci ties ...................................... 384
Coo lant (engi ne)............................ 389
DEF speci aladd itive s..................... 387
Engine oil....................................... 388
Fuel ................................................ 385
Importa ntsafe tynotes .................. 382
Ref rige rant (air-condi tioning
sys tem) .......................................... 389
Was herfluid.......................... .........3 90
Settin gs
Factory (on-boardcompu ter)......... 237
On-boa rdcompu ter....................... 233
Settin gthe airdistribu tion............... 130
Settin gthe airflo w............................ 131
Side impact airbag ............................. 43
Side marker lamp(display
messag e)............................................ 252
Side marker lamps(changi ng
bulb s)................................................. 117
Side window s
Conve nience closingfeatu re............ 86
Conve nience openingfeatu re.......... 86
Importa ntsafe tyinforma tion........... 85
Openi ng/closi ng.............................. 85
Prob lem(malfunction) ..................... 87
Res etting ......................................... 87
Sli ding sunroo f
Importa ntsafe tynotes .................... 88
Openi ng/closi ng.............................. 89
Prob lem(malfunction) ..................... 91
Res etting ......................................... 89
see Panor amaroofwith pow er
tilt/sl iding pane l SmartKey
Cha nging thebattery ....................... 76
Cha nging theprogr ammi ng............. 74
Che cking thebattery ....................... 76
Conve nience closingfeatu re............ 86
Conve nience opening featu re.......... 86
Displ aymessa ge............................ 267
Door central locking/u nlocking.......72
Importa ntsafe tynotes .................... 72
Loss ................................................. 77
Mecha nicalkey................................ 75
Posi tions (ignition lock)................. 139
Prob lem(malfunction) ..................... 77
Starting theengine ........................ 140
Sno wchai ns
Informati on.................................... 353
Soc kets
Lugg agecompa rtment ................... 298
Poi nts toobse rvebefo reuse ......... 297
Rea rcompartmen t......................... 297
Spare wheel
Notes/da ta.................................... 377
Storage location ............................ 329
see Emergency sparewhe el
Spec ialistwo rkshop ............................ 25
Spee d,controll ing
see Cruisecontrol
Spee dometer
Digita l............................................ 227
In the Instrument cluster................. 29
Segments ...................................... 223
Selecti ngthe unit of
meas urement................................ 233
see Instrument cluster
SRS (Supple mentalRestrain t
Syste m)
Displ aymessa ge............................ 246
Introducti on..................................... 38
Warni nglamp ....... ..................... ..... 275
Warni nglamp (function) ................... 38
Standing lamps
Cha nging bulbs.............................. 116
Displ aymessa ge............................ 252
Switchi ngon/off ........................... 108
Starting (engi ne) ....... .........................140
Station
see Radio
STEE RCONT ROL .................................. 6716
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

X
To acti vate /deacti vate :pre ssbutton :.
If ind icator lamp ;islit, op era tiono fthe
rear side windows isdeactivated.
Operation isonly possible usingthe
switches inthe driver's door.Ifindicator
lamp ;isoff, operation ispossible using
the switches inthe rear compartmen t. Panic
alarm X
To activate: press!button :for at
least onesecond.
An alarm sounds andtheexterior lighting
flashes.
X To deactivate: press!button :
again.
or
X Insert theSmartK eyinto theignition lock.
or
X Press theKEYLE SS-GO Start /Stopbutton.
The KEYLE SS-GO key must beinthe
vehicle. i
USA
only:
This device complies withPart15ofthe
FCC Rules. Operation issubject tothe
following twocondition s:
1. This device maynotcause harmful
interfer ence,and
2. this device mustaccept anyinterfer ence
received, includinginterferencethatmay
cause undesired operation.
Any unauthorized modificationtothis
device couldvoidtheuser's authority to
operate theequipment.
The product labelwithFCCIDand IC
certific ationnumber canbefound inthe
battery caseofthe SmartK ey. i
Canada
only:
This device complies withRSS-Gen of
Industry Canada.Operation issubjec tto
the followi ng two cond itions :
1. Thisde vice ma ynot causeinte rferenc e,
and
2. thi sde vice mu stacc eptany inte rference
rece ived,incl uding inte rference thatm ay
caus eunde sired oper ation.
An yunaut horizedmod ificatio ntothis
device couldvoidtheuser's authority to
operate theequipment.
The product labelwithFCCIDand IC
cert ification numbercanbefound inthe
battery caseofthe Smart Key. Driving
safetysystems Driving
safetysystems overview
In this section ,you willfind informat ionabout
the following drivingsafetysystems:
R ABS (Anti-lock BrakingSystem)
R BAS (Brake AssistSystem)
R BAS PLUS (Brake Assist System Plus*)
R ESP ®
(Electr onicStability Program)
R EBD (Electr onicBrake forceDistribution)
R AD APTIVE BRAKE 60
Driving
safetysystemsSafety

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). Sma
rtKey Impor
tant safet ynotes G
WARN
ING When
leaving thevehicle, alwaysremovethe
Smart Keyfrom theignit ionlock .Always take
the Smart Keywith youand lock thevehicle.
Do not leave children unsuperv isedinthe
vehicle, evenifthey aresecured inachild
rest raint system ,and donot give them acces s
to an unlock edvehicle. Achild's unsupervised
access toavehicle couldresult inan accident
and/or serious personal injury.Theycould:
R injure themselves onvehicle parts
R be seriously orfatally injured byextrem e
heat orcold
R injure themselves orhave anaccident with
vehicle equipment thatmay stillbein
operation evenaftertheSmartKey has
been removed fromtheignition, suchasthe
seat adjustment ,steering wheel
adjustment ormemory function.
If children openadoor, theycould cause
severe oreven fatalinjury toother persons; if
they getout ofthe vehicle, theycould injure
themselves whendoing soorbe seriously or
even fatally injured byany passing traffic.
Do not expose thechild restraint systemto
direct sunlight. Thechild restraint system's
metal parts, forexample, couldbecome very hot,
andachild could beburned onthese
parts. G
WARNING If
akey ring istoo heavy ortoo large, the
weight actingonthe key could cause itto turn
in the ignition lockorcatch onthe steering
wheel. Thiscould cause theengine tobe
switched offsuddenly. Youcould losecontrol
of the vehicle andcause anaccident. Donot
attach anyheavy orlarge keyrings tothe key
that isinserted inthe ignition. General
notes
If you cannot lockorunlock thevehicle with
the SmartK ey,either thebattery inthe
SmartK eyisdischarged, theSmartK eyis
faulty orthe starter battery isdischarged.
X Check thebattery inthe SmartK eyand
replace itifnecessary (Ypage 76).
X Unlock thedriver's doorusing the
mechanical key(Ypage 80).
X Lock thevehicle usingthemechanical key
(Y page 80).
X Have thestarter battery andthebattery
cont acts check edataqual ified specialist
workshop.
If the SmartK eyisfaulty, contactRoadsi de
Assistanc eor aqual ified specialist workshop. Smar
tKeyfunctions
General notes i
USA
only:
This device complies withPart15ofthe
FCC Rules. Operation issubject tothe
following twocondition s:
1. This device maynotcause harmful
interfer ence,and
2. this device mustaccept anyinterfer ence
received, includinginterferencethatmay
cause undesired operation. 72
Smar
tKeyOpening/closing

Any
unauthorized mod ificati ontothis
de vic ecou ldvoi dthe user’ sa uth orityto
oper atetheequipm ent.
The Product label withFCC IDand IC
ce rtific ation num bercan befoun din the
bat tery cas eof theS martKey . i
Ca
nada only:
This device complieswith RSS-210 of
Industry Canada .Operation issubjec tto
the followi ng two cond itions :
1. Thisde vice ma ynot causeinte rferenc e,
and
2. thi sde vice mu stacc eptany inte rference
rece ived,incl uding inte rference thatm ay
caus eunde sired oper ationofthe device.
Any unauthorized modificationtothis
device couldvoidtheuser’s authority to
operate theequipment.
The Product labelwithFCCIDand IC
certific ationnumber canbefound inthe
battery caseofthe SmartK ey.
Locki ngand unlocking centrally The
SmartK eycent rally locks/unloc ks:
R the doors
R the tailgate
R the fuel filler flap :
& Locks thevehicle
; F Opens/closes thetailgate
= % Unlock sthe vehicle
When unlocking, theturn signals flashonce.
When locking, theyflash three times. When
itis dark, thesurround lightingalso
comes onifit is activated inthe on-board
computer (Ypage 235).
You canalso setanaudi blesignal toconfirm
that thevehicle hasbeen locked. Theaudi ble
signal canbeactivated anddeactivated using
the on-board computer (Ypage 236).
X To unlock centrally: pressthe%
button.
If you donot open thevehicle within
approximately 40seconds ofunlocking:
R the vehicle islocked again.
R the theft deterrent lockingsystem isarmed
again.
X To lock centrally: pressthe& button. KEY
LESS-GO
General notes i
USA
only:
This device complies withPart15ofthe
FCC Rules. Operation issubject tothe
following twocondition s:
1. This device maynotcause harmful
interfer ence,and
2. this device mustaccept anyinterfer ence
received, includinginterferencethatmay
cause undesired operation.
Any unauthorized modificationtothis
device couldvoidtheuser’s authority to
operate theequipment.
The Product labelwithFCCIDand IC
certific ationnumber canbefound inthe
battery caseofthe SmartK ey. i
Canada
only:
This device complies withRSS-2 10of
Industry Canada.Operation issubjec tto
the followi ng two cond itions :
1. Thisde vice ma ynot causeharmfu l
inte rferenc e,and SmartK
ey
73Opening/closing Z

2.
this devicemust accep tany inte rference
rece ived,incl uding inte rference thatm ay
caus eunde sired oper ation.
An yunaut horizedmod ificatio ntothis
device couldvoidtheuser’s authority to
operate theequipment.
The Product labelwithFCCIDand IC
cert ification numbercanbefound inthe
battery caseofthe Smart Key.
Import antnotes onthe use ofKEY LESS-
GO R
The KEYLE SS-GO key can beused likea
conv ention alkey.
R You cancombine KEYLESS-GO funct ions
with those ofaconv ention alkey, e.g.
unlock withKEYLE SS-GO and lock with the
& button .
R Always carryyourKEYLE SS-GO key onyour
person.
R Do not keep theKEYLE SS-GO key toget her
with:
- electron icdevices, e.g.amobile phone
or another key
- metallic objects,e.g. coins ormetal foil.
This canaffect thefunct ionality of
KEYLE SS-GO.
R When lockingand unlockin gusing
KEYLE SS-GO, thedistance between the
Smart Keyand thecorrespon dingdoor
handle mustnotexceed 3ft (1 m).
R Ifthe KEYLE SS-GO key isremoved fromthe
vehicle, itis possible thatthesystem may
not recogn izethe Smart Key.Thevehicle
can then notbelocked orstart edusing
KEYLE SS-GO.
R Ifthe KEYLE SS-GO key has been removed
from thevehicle, e.g.ifapassenger leaves
the vehicle withaKEYL ESS-G Okey : X
To unl ockt he vehi cle:touch theinner
surfa ceofthe door handl e.
X To loc kthe vehi cle:touch sensor
surfa ce:.
X Co nven ienceclo singfeature: touch
recesse dsensor surface; for an
extended period(Ypag e87).
If you pullon the handl eofthe tailgate, only
the cargo compartmen tof the vehicle is
unlocked. Changing
thesettings ofthe lockin g
system
You canchange thesettin gofthe locking
system insuch away that only thedriver's
door andthefuel filler flapareunlocked. This
is useful ifyou frequently travelonyour own.
X To change thesetting: pressandhold
down the% and& buttons
simultaneously forapproximately six
seconds untilthebattery checklamp
(Y page 76)flashes twice. i
If
the settin gof the locking systemis
changed withinthesignal rangeofthe
vehicle, pressing the& or% button
locks orunlocks thevehicle.
The SmartK eynow funct ionsasfollows:
X To unlock thedriver's door:pressthe
% button once.
X To unlock centrally: pressthe%
button twice.
X To lock centrally: pressthe& button. 74
Smar
tKeyOpening/closing

The
KEYLE SS-GO funct ionischanged as
follows:
X To unlock thedriver 'sdoor: touch the
inner surface ofthe door handle onthe
driver's door.
X To unlock centrally: touchtheinner
surface ofthe door handle onthe fron t-
passenger doororthe rear door.
X To lock centrally: touchtheouter sensor
surface onone ofthe door handles. Restoring
thefactor ysettings
X Press the% and& button s
simultaneously forapproximately six
seconds untilthebattery checklamp
flashes twice. Mechanical
key
General notes If
the vehicle cannolonger beunlocked with
the Smart Key,usethemechanic alkey.
If you usethemechanic alkey tounlock and
open thedriver's door,theanti- theft alarm
system willbetriggered (Ypage 68).
There areseveral waystoturn offthe alarm:
X To turnthe alarmoff with the
Smar tKey: pressthe% or& button
on the Smart Key.
or
X Insert theSmart Keyinto theignition lock.
or
X To deactivat ethe alarmwith KEYL ESS-
GO: press theStart/S topbutton inthe
ignition lock.TheSmart Keymust beinthe
vehicle.
or
X Lock orunlock thevehicle usingKEYLE SS-
GO. TheSmart Keymust beoutside the
vehicle. Removing
themechanical key X
Push release catch: inthe direction of
the arrow andatthe same time,remove
mechanic alkey ;from theSmart Key. Smar
tKeybattery
Impor tantsafety notes Have
thebatteries changedataquali fied
specialist workshop. G
WARNIN
G Batt
eries containtoxicsubstances .
Swallowing batteriescanlead toserious
health issues ordeath.
Keep batteries outofthe reach ofchildren.
Seek medical attentionimmediately ifa
battery isswallowed . G
WARNIN
G The
Smart Keybatteries containperchlorate
material, whichmayrequire specialhandling
and regard forthe environ ment.Observe
governm entdisposal guidelines. California
resident s,see www .dtsc.ca.gov/
Haza rdousW aste/Perchlora te/
index.cfm. Sma
rtKey
75Opening/closing Z

Check
ingthebat tery X
Pre ssthe& or% button.
The battery iswork ingproperl yif bat tery
ch eck lamp :light sup brie fly
If bat tery check lamp :does notlight up
brief lydurin gthe test,the batt eryis
disch arged.
X Changin gthe batt ery(Ypage 76) i
You
canobtain the batt eryataqualified
spec ialist workshop. i
If
the SmartKey batteryischec kedwithin
the sign alrec eptio nrang eof theveh icle,
pres singth e& or% buttonloc ksor
unlo cksth eveh icle.
Cha nging thebat tery You
requi reaCR 2025 3V cel lbat tery.
X Tak eth emec hanical keyout ofthe
Sm artKey (Ypage 75). X
Pre ssmec hanical key; intoth eopen ing
in theSm artKey inthedire ction ofthe arr
ow untilbat tery tray cover :open s.
When doingso, donoth old cover :shut.
X Remove batterytraycover :. X
Repeatedly tapthe Smart Keyagainst your
palm untilbattery =falls out.
X Insert thenew battery withthepositive
termin alfacing upwards. Usealint- free
cloth todo so.
X Make surethatthesurface ofthe battery is
free from lint,grease andallother forms of
cont amination.
X Insert thefront tabsofbattery tray
cover :and then press toclose it.
X Insert themechanical keyinto the
Smart Key.
X Check thefunct ionofall Smart Keybutton s
on the vehicle. 76
Sma
rtKeyOpening/closing