brake sensor MERCEDES-BENZ M-CLASS SUV 2011 Owner's Manual

Displa
ymessages Possible causes/consequences and
M Solutions
Vehicles wit
hBecker ®
MA PPILOT :ifthe Becker ®
MA PPILOT is
not connected, the radar sensor syste misdeactivated automati-
cally.
BAS PLUS, DI STRONIC PLUS, Blind Spot Assis torActive Blind
Spo tAssist and PRE-SAFE ®
Brake ar enot available.
X Connect the Bec ker®
MAP PILOT; see the separate operating
inst ructions. Rada
rsensor deactivated See
Owner's Manual Th
er adar senso rsystem is deactivated.
X Check whether or not the radar sensor syste mmay be activated
(Y page 380).
X Switch on the radar senso rsystem (Y page 249). Lan
eKeeping Assist currently
unavailable See
Owner's Man‐
ual or
Active Lane Keeping Assist cur‐
rently unavailable
See Owner's Manual Lan
eKeeping Assist or Active Lan eKeeping Assist is deactivated
and temporarily inoperative. Possible causes:
R the windscreen is dirt yinthe camera's field of vision.
R visibilit yisimpaire ddue to heavy rain, snow or fog.
R there are no lane markings for alonger period.
R the lane markings ar eworn ,dark or covered, e.g. by dirt or snow.
If the display message does not disappear:
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Apply the electric parking brake.
X Clean the windscreen.
If the system detect sthat the camera is fully operational ,the dis-
play message disappears.
Lane Keeping Assist or Ac tive Lane Keeping Assist is operational
again. Lane Keeping
Assist inopera‐
tive orActive Lane
Keeping Assist
inoperative Lane Keeping Assist or Active Lane Keeping Assist is faulty.
X
Visit aqualified specialist workshop. Display messages
273On-boardcomputer anddispl ays Z

Displa
ymessages Possible causes/consequences and
M Solutions
Bl
indS potA ssist currently unavail‐
abl
eS ee Owner's Manual or
Ac tive Blind Spo
tAssist currently unavail‐
abl
eS ee Owner's Manual Blind Spot Assist or Active Blind Spot Assis
tist emporaril yinop-
erative .Possible causes:
R you have established the electrical con nectio nbetween the
trailer and your vehicle.
R the sensors are dirty.
R function is impaired due to heavy rai norsnow.
R the radar sensor system is outside the operating temperature
range.
R the radar sensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radio sta-
tions or other sources of electromagnetic radiation.
The yellow 9indicator lamps also light up in the exterior mir-
rors.
X Whe ntowing atrailer, con firm th edisplay message with a.
If you are drivin gwithout atrailer and th edisplay message does
not disappear:
X Pull over and stop the vehicle safely as soon as possible ,paying
attention to road and traffic conditions.
X Apply the electric parking brake.
X Clean the sensors (Y page 327).
X Restart the engine.
If the system detect sthat the sensor sare full yoperational, the
display message disappears.
Blin dSpot Assist or Active Blin dSpot Assist is operational again. Blin
dSpot Assist inopera‐
tive or
Active Blind Spot Assist inoper‐
ative Blind Spot Assist or Active Blind Spot Assist is faulty.
Th ey ellow 9indicator lamps also light up in the exterior mir-
rors.
X Visit aqualified specialist workshop. Park Assist
cancelled The driver'
sdoor is open and the driver' sseat belt has not been
fastened.
X Repeat the parking process with the seat belt fastened and the
driver' sdoor closed. You have inadvertently touched the multifunc
tion steerin gwheel
while steerin gintervention was active.
X While steerin gintervention is active, make sure that the multi-
function steerin gwheel is not touched. 274
Displa
ymessagesOn-board compu tera nd displays

Displa
ymessages Possible causes/consequences and
M Solutions
DI
STRONIC PLUS currently unavail‐
abl
eS ee Owner's Manual DISTRONIC is deactivated and tempora
rily inoperative. Possible
causes:
R theD ISTR ONIC PLU Scove rint he ra diatorgrille is di rty.
R function is impaire ddue to heav yrain or snow.
R thes ensor sinthebumpers are dirty.
R ther adar sensor system is temporarily inoperative, e.g. due to
elect romagnetic radiatio nemitted by nearby TV or radio sta-
tions or other source sofelectromagnetic radiation.
R the system is outside the operatin gtemperatur erange.
R the on-board voltage is too low.
Aw arning ton ealso sounds.
If th edisplay message does no tdisappear:
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Apply the electric parking brake.
X Clean the DISTRONIC PLU Scover in the radiator grille
(Y page 32 7).
X Clean the bumper s(Ypage 32 7).
X Restart the engine.
If the system detects that the sensors are fully operational, the
displa ymessage disappears.
DI ST RONIC is operational again. DISTRONIC PLUS
inoperative DISTRONIC PLUS is faulty. BAS PLUS and PRE-SAFE
®
Brake may
also have failed.
Aw arning ton ealso sounds.
X Visi taq ualifieds pecialist workshop. DISTRONI
CPLUS override Yo
uh ave depressed the accelerator pedal. DISTRONIC PLUS is no
longer controlling the spee dofthe vehicle.
X Take your foot off the accelerator pedal. DISTRONI
CPLUS --- km/h An activation conditio
nfor DI STRONIC PLUS is not fulfilled.
X Check the activation conditions for DISTRONIC PLUS
(Y page 174). DISTRONIC PLUS and
SPEEDTRONIC
inoperative DISTRONIC PLUS and SPEEDTRONIC are faulty.
Awarning tone
also sounds.
X Visit aqualified specialist workshop. 276
Display messagesOn-board computer and displays

Usefu
linfor mati on
i This Owner's Manual describes all models
and all standard and optional equipment
available to your vehicle at the time of pub-
lication of the Owner's Manual. Country-
specific deviation sare possible .Please
not ethat your vehicle ma ynot be equipped
with all featur es described. This also
applies to safety-releva ntsystems and
functions.
i Please read the information on qualified
specialist workshops (Y page 24).Note
sont hetechnical data
You can fin dtechnica ldatao nthe Internet at:
http://www.mercedes-benz.com
i The technical dat awas determined in
accordance wit hECDirectives. All data
applies to th evehicle's standard equip-
ment. Therefore, th edatam ay differ for
vehicles wit hoptional equipment. You can
obtain further information from a
Mercedes- BenzService Centre. Genuine Mercedes-Ben
zparts
Mercedes-Ben ztests genuin eparts and con-
version parts and accessories which have
been specifically approved for your vehicle for
their reliability, safety and suitability. Despite
ongoing market research, Mercedes -Benz is
unabl etoe valuat eother parts. Mercedes-
Benz therefore accepts no responsibility for
the use of such parts in Mercedes-Ben zvehi-
cles, even if they have been independently or
officially approved.
In Germany and some other coun tries, certain
parts are only officially approved for installa-
tion or modification if they comply with legal
requirements. All genuine Mercedes-Benz
parts meet this requirement .The use of non- approved parts ma
yinvalidat ethe vehicle's
general operating permit. This is the case if:
R they cause achange of the vehicle type
from that for whic hthe vehicle' sgeneral
operating permit was granted.
R other road users could be endangered.
R the emission or noise levels are adversely
affected. G
WARNING
Drivin gsafety may be impaired if non-
approved parts, tyres and wheels or safety-
relevant accessories are used.
This could lead to malfunctions in safety-rel-
evant systems, e.g. the brake system. This
could cause you to lose control of your vehicle
and cause an accident.
For this reason, Mercedes-Benz recommends
that you use genuine Mercedes-Benz parts or
parts of equal quality. Only use tyres, wheels
and accessories that have been specifically
approved for your vehicle.
! Airbags and sea tbelt tensioners, as well
as control unit sand sensors for these
restraint systems may be installed in the
following areas of your vehicle:
R doors
R doo rpillars
R door sills
R seats
R dashboard
R instrument cluster
R centre console
Do not install accessories such as audio
systems in these areas. Do not carr yout
repairs or welding .You coul dimpair the
operating efficie ncyoft he restraint sys-
tems.
Hav eaftermarket accessories installe dat
aq ualified specialist workshop. Mercedes-
Benz recommends that you use a
Mercedes -Benz Ser vice Centre for thi spur-
pose. 370
Genuine Mercedes-Benz partsTechnical data

24-G
Hzradar sensor system (country overview)
The 24 GHz radar sensor sys temr equir esseparat eapproval fo reach coun try. Whe nyou are
dri ving in acoun tryinw hichthe ra dar sensor system is no tapproved, you must deacti vate
the syste musing the on-boar dcompu ter( Ypage 24 9).T he curren tcountry over view can be
obtain ed fromaMercedes-Benz Ser vice Centre.
Vehicles with anavigation system: the radar sensor system is deactivated automatically
near radio tele scope facilities.
The currently active systems ar eautom atically deactivated:
R DISTRONIC PLUS (Y page174)
R Blind Spo tAssist (Y page 208)
R Activ eBlind Spot Assist(Y page212)
R PRE-SAFE ®
Brake (Y page45)
Ad isplay message appears in the multifunction display to tell you that the radar sensor system
is being switched off (Y page 272).
BA SP LUS (Y page 62) is then also unavailable.
If th edeactiva tion does not occur automatically ,you must deactiva tethe radar sensor system
using the on-board computer (Y page 249).
Vehicles withou tnavi gation and vehicles for Australia: you must deactivate the radar
sensor system using the on-bo ardc omputer when you are near aradio telescop efacility
(Y page 249). Country Radio telescope
facilities Geographical latitude and
longitude Distance to be
maintained
from the facility Egypt – – –
Andorra – – –
Australia Parkes 32°59'59
"S,14 8°1 5'44" E 10 km
Narrabri 30°18'52" S,149°32'56" E 10 km
Canberra 35°23'54" S,148°58'40" E 3km
Western Australia 26°3
7'13"S,117°30'40" E 10 km
Bahrain – – –
Belgium – – –
Bosnia-Herzego-
vina – – –
Bulgaria – – –
Den
mark – – –
Germany Effelsberg 50°31'32" N, 06°53'00" E 6.5 km380
24-GHz radar sensor syste
m(countr yoverview)Technica ldata