2012 MERCEDES-BENZ M-Class warning

Disp
laymessa ges Poss
iblecauses/c onseq uences and M Solu
tions PRE
-SAFE Fun
ctions Limited See
Operator's Man
ual G
Ri
sk ofacci dent PRE
-SAF E®
Br ake isdef ective. BASPLU Sor thed istanc ewarning
sign almay alsohave failed.
X Visi taqu alified specialist workshop. 6
SRS
Malfun ction Servic
eRequir ed G
Risk
ofinjur y There
isamalfunc tioninthe SRS (Supplemen talRestrain t
Syst em). The6 warning lampalsolights upinthe instrument
cluster .
X Visit aqualified specialist workshop. 6
Front
LeftSRS Malfun
ction Servic
eRequir ed or
Front
Right Malfun
ction Servic
eRequir ed G
Risk
ofinjur y SRS
hasmalfunc tionedatthe fron ton the left orright .The 6
warning lampalsolights upinthe instrument cluster.
X Visit aqualified specialist workshop. 6
Rear
LeftSRS Malfun
ction Servic
eRequir ed or
Rear
Right SRS Malfun
ction Servic
eRequir ed G
Risk
ofinjur y SRS
hasmalfunc tionedatthe rear onthe left orright .The 6
warning lampalsolights upinthe instrument cluster.
X Visit aqualified specialist workshop. 6
Rear
Center SRS Malfun
ction Servic
eRequir ed G
Risk
ofinjur y SRS
hasmalfunc tionedatthe rear center. The 6 warning lamp
also lights upinthe instrument cluster.
X Visit aqualified specialist workshop. 6
Left
SideCurtai n Airbag Malfun
ction Servic
eRequir ed or
Right Side Curtai
n Airbag Malfun
ction Servic
eRequir ed G
Risk
ofinjur y There
isamalfunc tioninthe left- hand and/or right-handwindow
curt ainairbag. The6 warning lampalsolights upinthe
inst rument cluster.
X Visit aqualified specialist workshop. 246
Display
messagesOn-board computer and displays

G
WARNING In
the event amalfu nction ofthe SRS isindica tedasoutli nedabove,the SRS may notbe
opera tional.
For yoursafet y,we stron gly recomm endthat you contactana uth oriz edMer cedes-Ben zCent er
immediately tohave thesystem checked.Other wisetheSRS may notbeactivat edwhen needed
in an acciden t,which couldresult inserious orfatal injury, oritmight deploy unexpec tedlyand
unnec essarily whichcouldalsoresult ininjury. Display
messages
247On-board computer and displays Z

G
WARNING If
the 45 indicatorlamp remai nslitwith anadu ltoccupa nton the front-passenge rseat
even afterperform ingthe above corrective steps, donot have anypassenger usethefron t-
passenger seatuntil thesystem hasbeen repaired. Lights
i
Display
messages aboutLEDs:
This display message willonly appear ifall LED shave failed. Display
messages Possible
causes/consequences andM Solutions
b
Check
Left Corneri
ng Light or Check
Right
Corneri ng Light The
leftorright- hand cornering lightisdefect ive.
X Check whether youarepermitt edtochange thebulb yourself
(Y page 114).
or
X Visit aqualified specialist workshop. b
Check
LeftLow Beam or Check Right
Low
Beam The
leftorright- hand low-beam headlamp isdefect ive.
X Check whether youarepermitt edtochange thebulb yourself
(Y page 114).
or
X Visit aqualified specialist workshop. b
Check Trailer Left
Tail
Lamp or Check
Trailer Right Tail
Lamp The
leftorright- hand trailer taillamp isfaulty.
X Check whether youarepermitt edtochange thebulb yourself.
or
X Visit aqualified specialist workshop. b
Check Trailer Left
Turn
Signal or Check
Trailer Right Turn
Signal The
leftorright- hand trailer turnsignal lampisdefect ive.
X Check whether youarepermitt edtochange thebulb yourself.
or
X Visit aqualified specialist workshop. b
Check
Trailer Brake
Lamp The
trailer brakelampisdefect ive.
X Check whether youarepermitt edtochange thebulb yourself.
or
X Visit aqualified specialist workshop. 250
Display
messagesOn-board computer and displays

Disp
laymessa ges Poss
iblecauses/c onseq uences and M Solu
tions ?
Coo
lantLev elLow Sto
pVeh icl eTur n Eng
ine Off The
coolan tistoo hot.
X Pull over andstop thevehicle safelyandswitch offthe engine,
pay ing attent iontoroad andtraffic conditions.
X Make surethattheairsuppl yto the engine radiatorisnot
blocked, e.g.bysnow, slushorice.
X Wait untilthedispla ymessage disappearsbefore restarting the
engine. Otherwise, thereisarisk ofengine damage .
X Pay attent iontothe coolant temperature display.
X Ifthe temperature increasesagain,visit aqual ified speciali st
workshop immediately . The
poly-V-belt mayhave torn.
X Pull over andstop thevehicle safelyandswitch offthe engine,
pay ing attent iontoroad andtraffic conditions.
X Open thehood.
X Check whether thepoly-V-belt istorn.
If the poly-V-belt istorn:
! Donot cont inue driving. Theengine couldotherwise overheat.
X Consult aqual ified speciali stworkshop.
If the poly-V-belt isnot dam aged:
X Wait untilthedispla ymessage disappearsbefore restarting the
engine. Otherwise, thereisarisk ofengine damage .
X Pay attent iontothe coolant temperature display.
X Visit aqual ified speciali stworkshop. G
WARNING Driving
whenyourengine isoverheated cancause somefluidswhich mayhave leaked intothe
engine compartment tocatch fire.Youcould beseriously burned.
Steam fromanoverheated enginecancause serious burnswhich canoccur justbyopening the
engine hood.Stayawayfrom theengine ifyou seeorhear steam coming fromit.
Stop thevehicle inasafe location awayfrom other traffic. Turnoffthe engine, getout ofthe
vehicle anddonot stand nearthevehicle untiltheengine hascooled down.
! Ifthe coolant temperature exceeds248‡(120 †)donot cont inue driving. Theengine will
otherwise bedamage d. Dis
play messages
255On-board computer and displays Z

Disp
laymessa ges Poss
iblecauses/c onseq uences and M Solu
tions h
Max
.Spe ed 12MPH G
Ri
sk ofacci dent The
Active Curv eSys temi sfaulty. Thevehicle's handling
characteristics areseverely impaired.
In addition, thevehicle leveldispla yappea rsbetween thevehicle
icon andthedispla ymessage, andawarning tonesounds.
X Do not drive faster than12mph (20km/h).
X Adjust yourdriving styletothe altered handling characteristics.
X Visit aqual ified speciali stworkshop immediately . Ã
Inoperative DSR
(Downhill SpeedRegulation) isdeactivated duetoa
malfunction.
X Have DSRchecked ataqual ified speciali stworkshop. HOLD
Off The
HOLD function isdeactivated. Thevehicle isskidding.
Aw arning tone also soun ds.
X React ivateth eHO LD function late r(Y page 179). Rad
arSensors Dea
ctivatedSee Ope
rator'sMan ual The
radar sensor syst emisdeac tivate d.
X Swit chon theradar sensor syst em(Ypage 236). Lan
eKee ping Ass
ist Currently Una
vailableSee Ope
rator'sMan ual or Act
ive Lane Kee
pingAss ist Cur
rently Una
vailableSee Ope
rator'sMan ual Lan
eKeep ingAssist orActiveLan eKeep ingAssist isdeac tivate d
and tempo rarilyino perat ive.Poss iblecaus esare:
R thewind shieldinthecam era'sfiel dof vis ion isdirt y.
R vis ibilit yis impair eddue toheav yrain ,sn ow orfog .
R there arenolane markingsfor alon ger period.
R thelane markingsare worn ,dark orcover ed, e.g.bydir torsnow .
If the displ aymes sage does not disa pp ear:
X Pu llove rand stop thevehiclesa fel yas soo naspossible ,pay ing
attent iontoroad andtraffic conditions.
X Apply theelectric parking brake.
X Clea nthe windshield.
If the system detectsthat thecamera isfully operational, the
displa ymessage disappears.
Lane Keeping AssistorAct ive Lane Keeping Assistisoperational
again. Display
messages
259On-board computer and displays Z

Disp
laymessa ges Poss
iblecauses/c onseq uences and M Solu
tions You
haveinadve rten tly to uch edthemult ifunction steer ing whee l
while steer ing inte rven tion was active.
X Whil est eer ing inte rven tion isact ive,mak esur eth at the
mult ifunction steer ing whee lis no ttouched unintentionally. The
vehicle hasstart edtoskid andESP®
has interv ened.
X Use Active Parking Assistagainlater(Ypage 186). Park
Assist Inoperative You
have justcarried outalarge number ofturnin gor parking
maneuvers.
Act ive Parking Assistwillbecome availableagain after
approximately 10minutes (Ypage 186).
X Pull over andstop thevehicle safelyassoon aspossible, paying
atten tiontoroad andtraffic conditions.
X Switch offand restart theengine.
If the display message continues tobe display ed:
X Visit aquali fiedspecialist workshop. PARKTRONIC
isdefectiv e.
X Visit aquali fiedspecialist workshop. Park
Assist Finished The
vehicle isparked. Awarning tone also soun ds.
The displ aymes sage disapp earsautomaticall y. DIS
TRONIC PLUS Off DI
ST RONI CPLU Shasbeen deactivate d(Y page 169). Ifit was
deac tivate dauto maticall y,awarn ingtone also soun ds. DIS
TRONIC PLUS Now
Availa ble DI
ST RONI CPLU Sisoperational againafter havingbeen
tempora rilyunava ilable .You can now reactivat eDIS TRONIC PLUS
(Y page 169). Display
messages
261On-board computer and displays Z

Disp
laymessa ges Poss
iblecauses/c onseq uences and M Solu
tions Cru
ise Control Ino
perative Cruis
eco ntrol isdef ective.
X Vis itaqualif iedspecialist wor kshop . Cru
ise Control ---
mph Ac
ondition foractivatin gcruise controlhas notbeen fulfilled.
You attempt edtosave aspeed ofless than 20mph (30km/ h).
X Ifthe situation allows,drivefaster than20mph (30k m/h )and
save thespee d.
X Check theactivati onconditions forcruise control
(Y pag e167). Tires
G
WARNING Do
not drive withaflat tire. Aflat tire affects theability tosteer orbrake thevehicl e.You may
lose control ofthe vehicl e.Continue ddrivi ngwith aflat tire willcause excessive heatbuild-up
and possi blyafire. G
WARNING Follo
wrecommended tireinfla tion pressu res.
Do not underi nflatetires.Underinfla tedtires wearexcess ivelyand /or unevenl y,ad vers elyaff ect
ha ndl ing and fueleco nomy ,and aremore likel yto failfrom being overheated.
Do not overinflate tire s.Ove rinflated tirescan advers elyaff ect handl ing and ridecomfo rt,we ar
une venl y,incre asestop ping dista nce, andresulti ns udden deflation (blowo ut)bec ause they are
mor elik ely tobec ome punctured ordamag edbyroad debris,pot hole set c. Disp
laymes sages Possi
blecauses/cons equences andM Solu
tions Tir
epre ssu res wil
lbe dis played aft
erdrivin ga few
minute s The
tirepres sure monitorismeasuring thetire pressure.
X Drive on.
The tirepressures appearint he multifunction displayafter you
have been drivingfor afew minutes . Tire Press. Monito
r Inoper
ative The
tirepress uremonitor isdefecti ve.
X Visi taqu alified specialist workshop. Tire Press. Monito
r Inoper
ative No Wheel
Sensor s The
wheels mounteddo not have asuitable tirepressure sensor.
The tirepressure monitorisdeactiv ated.
X Mount wheels withsuitable tirepressure sensors.
The tirepressure monitorisactiv ated automatic allyafter drivin g
for afew minut es. Display
messages
263On-board computer and displays Z

Disp
laymessa ges Poss
iblecauses/c onseq uences and M Solu
tions Che
ck Tir
es G
Ri
sk ofacci dent The
tire pre ssur ein on eor mor etires has dropped signific ant ly.
The whee lpos ition isdisp layed inthemult ifunction disp lay.
Aw arning tone also soun ds.
X Stop theveh icle without makingany sudde nstee ring orbra king
ma neu vers.Pa yatte ntiontothe traffic conditionsasyou doso.
X Correct thetire pressure (Ypage 359).
X Ifnecessary, changeawheel (Ypage 374). Caution:
Tire
Malfunction G
Risk
ofaccident The
tirepressure inone ormore tireshasdropped suddenly. The
wheel position isdisplay edinthe multifunct iondisplay .
X Stop thevehicle without makinganysudden steeringor braking
maneuvers. Payatten tiontothe traffic conditionsasyou doso.
X Ifnecessary, changeawheel (Ypage 374). Correct
Tire
Pressure The
tirepressure istoo low inat least oneofthe tires orthe tire
pressure differencebetween thewheels istoo great.
X Check thetire pressures atthe next opportunit y.Ifnecessary,
correc tthe tire pressure (Ypage 359).
X Restart thetire pressure monitor(Y page 361). Tire
Press. Sensor(s)
Missing There
isno signal fromthetire pressure sensorofone orseveral
wheels. Thepressure ofthe affect edtire isnot display edinthe
multifunct iondisplay .
X Have thedefectiv etire pressure sensorreplaced ataq ualifi ed
spec ialist workshop. Tir
e Pre
ss. Mon
itor Cur
rently Unavail. Due
toasour ceofradio interf ere nce, no sign alscan berec eive d
fr om thewheel sensors.The tire pre ssur emon itor istempo rarily
malf unction ing .
X Dr ive on.
The tire pre ssur emon itor res tartsauto maticallyas soo nasthe
problem hasbeen solved. h
Tire
Press. Warning
Caution Tire
Malfunction G
Risk
ofaccident The
tirepressure inone ormore tireshasdropped suddenly .
Aw arning tone also soun ds.
X Stop theveh icle without makingany sudde nstee ring orbra king
ma neu vers.Pa yatte ntiontothe traffic conditionsasyou doso.
X Ifnecessary, changeawheel (Ypage 374). 264
Display
messagesOn-board computer and displays