2011 MERCEDES-BENZ M-CLASS SUV wheel

Displa
ymessages Possible causes/consequences and
M Solutions
8
Di
fferent. locking
sys
.c oolin gdown Please wait Th
ed ifferential loc kistoo hot and has been disengaged.
X Drive on carefully.
X Allow the differential lock to cool down.
The differential lock reengages as soon as it has cooled down. LO
WR ANGE Stop Apply parking brake Ag
earshif tprocess ha sbeen can celled. LOW RANGE is in the
neutral position. There is no connection between the engine and
the driv ewheels.
X Pull over and stop the vehicle safely as soon as possible, paying
attention to roa dand traffic conditions.
X Appl ythe electric parkin gbrake .Don ot con tinue driving under
any circumstances.
X Repe atthe gearshift process. LOW RANGE Malfunc‐
tion To park,
apply parking brake LO
WR ANGE is malfunctioning.
X Do not excee damaximum spee dof80k m/h.
X Apply th eelectric parkin gbrake to park.
X Have th evehicle checked at aqualified specialist workshop. LO
WR ANGE Max. speed 40 km/h Yo
uh ave exceeded the maximum spee dfor the gearshift process.
X Drive slower.
The gear change is made. LO
WR ANGE Max. speed 70 km/h Yo
uh ave exceeded the maximum spee dfor the gearshift process.
X Drive slower.
The gear change is made. LOW RANGE Shift to
position
Nbriefly Yo
uh ave reduced the vehicle speed, but the automatic transmis-
sion is not in position N.
X Briefly shift the automatic transmission to position N.LOW RANGE Shifting
cancelle
dPlease reactivate Th
eg earshif tprocess ha sbeen cancelled.
X Repeat the gearshif tprocess. Ã
inoperative DSR (Downhil
lSpeed Regulation) is deactivated due to afault.
X Hav eDSRchecked at aqualified specialist workshop. Display messages
271On-boar dcomp uter and displa ys 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
Cr
uise control and
SPEEDTRONIC
inoperative Cruise contr
ol andSPEEDTR ONIC ar emalfunctioning.
X Visit aqualified specialist workshop. Li
mit --- km/h SPEEDTRONIC cannot be activated while you are pressin
gthe
accelerator pedal beyon dthe pressur epoint (kic kdown). Cruise control
--
-k m/h Ac
ondition for activa ting cruise control has not bee nmet.
You have tried to stor easpeed below 30 km/h, for example.
X If condition spermit ,drive faster than 30 km/h and store the
speed.
X Check th eactivation conditio ns forcruis econtr ol
(Y page 17 0). 12
0k m/h Maximu
mspeed exceeded Only fo
rcertain coun tries: the maximum speed has been excee-
ded.
In addition, the multifunction display shows 120k m/h .
X Dri veslower. Ty
res Display messages Possible causes/consequences and
M Solutions
Tyr
epressure Check tyres G
Ris
kofa ccident
The tyre pressure loss warning system has detected asignificant
loss in pressure.
X Stop the vehicle without makin gany sudden stee ring or braking
manoeuvres. Pay attention to the traffic conditions as you do
so.
X Check the tyres and, if necessary, change the wheel
(Y pag e363).
X Check the tyre pressures and ,ifnecessary, set to the cor rect
tyre pressure.
X Restart the tyre pressure los swarning system when the tyre
pressure is correct (Y page 360).Chec
ktyre pres‐ sures
then restar
tRun Flat Indicator Th
et yre pressure los swarning system generated adisplay mes-
sage and has not been restarted since.
X Set the correct tyre pressure in all four tyres.
X Restart the tyre pressure loss warnin gsystem (Y page 360). Display messages
277On-boardcomputer anddisplays Z

Displa
ymessages Possible causes/consequences and
M Solutions
Ru
nF latI ndicator inoperative Th
et yrep ressur eloss war ningsystem is faulty.
X Visit aq ualified specialist workshop. Ty
re pressures wil
lbed isplayed after
afew minute
sofd riving Th
et yrep ressur emonitor is mea suring thetyrep ressure.
X Drive on.
Th et yrep ressures appear in the multifunction displa yafter you
have been driving for afew minutes. Tyre press. monitor
inoperative The tyr
epres sure monito risfaulty.
X Visi taq ualifieds pecialist workshop. Tyre press. monitor
inoperativ
eNo wheel sensorsinop‐
erativ
eNow heel sensors Th
ew heels fit teddon ot have asuitable tyre pressure sensor. The
tyre pressure monitor is deactivated.
X Fit wheel swith suitable tyre pressure sensors.
The tyre pressure monitor is activated automatically after driv-
ing for afew minutes. Check
tyre(s) G
Risk of accident
The tyr epressure in one or more tyre shas dropped significantly.
The wheel position is displayed in the multifunction display.
Aw arning ton ealso sounds.
X Stop th evehicle without making any sudde nsteering or braking
mano euvres.P ay attention to the traffic conditions as you do
so.
X Correc tthe tyr epressure (Y page 361).
X If necessary, change awheel (Y page 363). Caution,
tyre defect G
Risk of accident
The tyr epressure in one or more tyre shas dropped suddenly. The
wheel position is displayed in the multifunc tion display.
X Stop the vehicle withou tmaking any sudde nsteering or braking
manoeuvres. Pay attention to the traffic conditions as you do
so.
X If necessary, change awheel (Y page 363). Rectify
tyre pressure The tyr
epressure is to olow in at least one of the tyres, or the tyre
pressure differen cebetween the wheels is too great.
X Check the tyr epressures at th enext opportunity. If necessary,
correc tthe tyr epressure (Y page 361). 278
Display messagesOn-boar
dcompu tera nd displays

Displa
ymessages Possible causes/consequences and
M Solutions
Wh
eels ensor(s) missing There is no signal from the tyre pressu
resensor of on eorseveral
wheels. The pressur eofthe affected tyre is notdispla yed in the
multifunction display.
X Have the faulty tyre pressure sensor replaced at aqualified spe-
cialist workshop. Tyre press. monitor
currentl
yunavail‐ able Due to
asour ceofrad io interference, no signals can be received
from the wheel sensors. The tyr epressure monito rist emporarily
malfunctioning.
X Drive on.
The tyr epressure monito rrestarts automatically as soon as the
problem has been solved. h
Tyre pressure Cau‐
tion
,tyre malf. G
Ris
kofa ccident
The tyre pressure in one or more tyres has dropped suddenly.
Aw arning ton ealso sounds.
X Stop th evehicle without making any sudde nsteering or braking
mano euvres.P ay attention to the traffic conditions as you do
so.
X If necessary ,change awheel (Y page 363). h
Tyre pressure
Chec
ktyre(s) G
Ris
kofa ccident
The tyre pressure in one or more tyres has dropped significantly.
X Stop the vehicle without making any sudde nsteering or braking
manoeuvres. Pay attention to the traffic conditions as you do
so.
X If necessary, change awheel (Y page 363).
X Chec kthe tyr epressure. If necessary, corre ct thetyre pressure
(Y page 361). h
Please correct
tyr
epressure Th
et yre pressure is too low in at leas tone of the tyres, or the tyre
pressure difference between the wheels is too great.
X Check the tyre pressures at the next opportunity. If necessary,
correct the tyre pressure (Y page361). Display messages
279On-boardcomputer anddisplays Z

Problem Possible causes/consequences and
M Solutions
J
The red brake system
warnin
glamp comes on
while the engine is run-
ning. Awarning tone
also sounds. G
Risk of accident
There is insufficient brake fluid in the fluid reservoir.
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driving
under any circumstances.
X Apply the electric parking brake.
X Consult aqualified specialist worksho pimmediately.
X Observe th eadditiona ldisplay messages in the multifunction
display.
Do not top up the brake fluid. This does not correct the error. !
The yello
wABS warning
lamp is lit while the
engine is running. G
Risk of accident
ABS (Anti-lock Brake System) has bee ndeactivated due to afault.
For this reason, BAS (Brake Assist), BAS PLUS, ESP ®
(Electronic
Stability Program), PRE-SAFE ®
,P RE-SAFE ®
Brake, the HOL Dfunc-
tion, hill start assist, the adaptive brake lights and ESP ®
trailer
stabilisation are also deactivated, for example.
The brake system continues to function normally, but without the
functions listed above. The wheel scould therefor elock if you
brake hard ,for example.
ATTENTION ASSIS Tisdeactivated.
X Observ ethe additiona ldispla ymessages in the multifunction
display.
X Drive on carefully.
X Visit aqualified specialist workshop.
If the ABS control unit is faulty, there is also apossibility that other
systems, such as the navigation system or the automatic trans-
mission ,will not be available. 286
Warning and indicator lamp
sinthe instrument clusterOn-board compute rand displays

Problem Possible causes/consequences and
M Solutions
!
The yellow AB
Swarning
lamp is lit while the
engine is running. G
Risk of accident
ABS is temporarily unavailable. Therefore, BAS ,BAS PLUS, ESP ®
,
EBD (electronic brake force distribution), PRE-SAFE ®
,
PRE-SAFE ®
Brake, the HOLD function, hil lstart assist, the adaptive
brake lights and ESP ®
trailer stabilisation, for example, are also
deactivated.
Self-diagnosi sisnot yet complete or the on-boar dvoltage ma ybe
insufficient ,for example.
The brake system con tinues to function normally, but without the
functions listed above .The wheels could therefor elock if you
brake hard ,for example.
ATTENTION ASSIS Tisdeactivated.
X Careful lydriv eonas uitable stretch of road, making slight steer-
ing movements, at aspeed above 20 km/h.
The functions mentioned above are available again when the
warning lamp goes out.
If the warning lamp is still on:
X Observe the additional display messages in the multifunction
display.
X Drive on carefully.
X Visit aqualified specialist workshop. !
The yello
wABS warning
lamp is lit while the
engine is running .A
warning tone also
sounds. G
Risk of accident
EBD is faulty. Therefore, ABS ,BAS, BAS PLUS, ESP ®
,P RE -SAFE ®
,
PRE-SAFE ®
Brake, the HOLD functi on,hills tart assist, the adaptive
brake lights and ESP ®
trai lers tabilisation, for example, are not
availabl eeither.
The brake system continues to function normally, but without the
functions listed above .The wheels could therefor elock if you
brake hard ,for example.
ATTENTION ASSIS Tisdeactivated.
X Observ ethe additiona ldisplay messages in the multifunction
display.
X Driv eonc arefully.
X Visit aqualified specialist workshop. Warnin
gand indicator lam psin the instrument cluster
287On-boardcomputera nd disp lays Z

Problem Possible causes/consequences and
M Solutions
J֌!
The red brake warning
lamp, the yellow ESP
®
and ESP ®
OFF warning
lamps and the yellow
AB Sw arning lamp are
lit while the engine is
running. G
Risk of accident
ABS and ESP ®
are malfunctioning. Therefore, BAS ,BAS PLUS,
EBD ,PRE-SAFE ®
,P RE-SAFE ®
Brake, the HOLD function, hill start
assist, the adaptive brake lights and ESP ®
trailer stabilisation, for
example, are not available either.
The brake syste mcontinue stofunction normally, but without the
functions listed above. The wheel scould therefor elock if you
brake hard ,for example.
ATTENTION ASSIS Tisdeactivated.
X Observ ethe additiona ldisplay messages in the multifunction
display.
X Driv eonc arefully.
X Visit aqualified specialist workshop. ÷
The yello
wESP®
warn-
ing lamp flashes while
the vehicle is in motion. G
Risk of accident
ESP ®
or traction control has intervened because there is arisk of
skidding or at least one wheel has started to spin.
Cruise control or DISTRONIC PLU Sisd eactivated.
X Only depress the accelerator pedal as far as necessar ywhen
pulling away.
X Ac celerate more gently during the journey.
X Adapt your drivin gstyle to suit the road and weather conditio ns.
X Do not deactivate ESP ®
.
Exceptions: (Y page 63). å
The yello
wESP®
OFF
warning lamp is lit while
the engine is running. G
Risk of accident
ESP ®
and ESP ®
traile rstabilisatio nare deactivated. ESP ®
will not
stabilis ethe vehicle if it starts to skid or if awheel starts to spin.
X Reactivate ESP ®
.
For exceptions, see: (Y page 63).
X Adap tyour drivin gstyle to suit the road and weather conditio ns.
If ESP ®
cannot be activated:
X Have ESP ®
checked at aqualified specialist workshop. 288
Warnin
gand indicator lam psin the instru ment clusterOn-board computer and displays