2011 MERCEDES-BENZ M-CLASS SUV steering wheel

G
WARNING
Shoul dthe tyr epressure dro prepeatedly:
R check the tyr efor foreign bodies.
R check whether the wheel is losing air or the
valve is leaking.
R make sure that only avalve cap approved
by Mercedes-Benz is fitted on the tyre
valve.
Tyre pressures that are too low have anega-
tiv ee ffect on vehicl esafety, which could lead
you to cause an accident.
If possible, only correc ttyre pressures when
the tyres are cold.
The tyres are cold:
R if the vehicl ehas been parked wit hthe tyres
out of direc tsunlight for at least three
hours and
R if the vehicle has not been driven further
than 1. 6km
Depe nding on the ambient temperature, the
speed you are drivin gatand the load on the
tyres, the tyre temperature and thus the tyre
pressure may chang ebyapproximately
10 kPa (0. 1bar/1 .5psi) per 10 †. Take this
int oa ccount whe nchecking the pressur eof
warm tyres and only correc titifitist oo low
for the curren toperating conditions.
Drivin gwith tyre pressure that is too high or
too low can:
R shorten the servic elife of the tyres
R cause increased tyre damage
R have anegativ eeffect on handling charac-
teristics and thus th edriving safet y(e.g. by
causin gaquaplaning)
i The tyr epressure values given for low
load sare minimum values which offe ryou
good rid ecomfort characteristics.
However, you can also use the values given
for higher loads. These ar epermissible and
will not adversely affect the running of the
vehicle. H
Environmenta
lnote
Check the tyre pressure regularly, at least
every 14 days.
You will find information on tyre pressures for
the vehicle's factory-mounted tyres on the
plates described here. Tyr
epressure loss warning system
Important safety notes Whil
ethe vehicle is in motion, the tyr epres-
sure loss warning system monitors th eset
tyr ep ressure using th erotational speed of
the wheels. This enables the system to detect
significant pressure loss in atyre. If the speed
of rotation of awheel changes as aresult of
al oss of pressure, acorrespondin gwarning
message will appea rinthe multifunction dis-
play. G
WARNING
The tyr epressure loss warning system does
not warn you of an incorrectly se ttyre pres-
sure. The table on the insid eofthe fuel filler
fla pw ill help you decide whether the tyre
pressures should be corrected.
The tyre pressure loss warnin gsystem does
not replace the need to regularly check your
vehicle's tyre pressures, since an even loss of
pressure on several tyres at the same time
cannot be detecte dbythe tyr epressure loss
warning system.
Th et yre pressure monitor is not able to warn
you of asudden loss of pressure, e.g. if the
tyre is penetrated by aforeign objec t.
In the event of asudden loss of pressure, bring
the vehicle to ahalt by braking carefully. Do
not make any sudden steering movements
when doing so.
The function of the tyre pressure loss warning
system is limited or delayed if:
R snow chains are fitted to your vehicle's
tyres.
R road conditions are wintry. 360
Tyr
epressureWheels and tyres

R
you are drivin gonsandorg ravel.
R yo ua dopt averys porty driv ings tyle (cor-
nering at hig hspeeds or driv ingw ith high
rates of acceleration).
R you are towing avery heavy or lar getrailer.
R you are driving with aheavy load (in the
vehic le oron the roof).
Restarting th etyre pressure lo sswarn-
ing system Restart the tyre press
urel oss warnin gsystem
if you have:
R changed the tyre press ure
R changed the whe elso rtyres
R fitted new wheels or tyres
X Before restarting, consult the table of tyre
press ures on the inside of the fuel filler flap
to ensur ethat the tyr epressure in all four
tyre siss et correctly for the respective
operating conditions.
X Observ ethe notes in the section on tyre
pressures (Y page 359). G
WARNING
The tyr epressure loss warn ings ystem can
only give reliabl ewarnings if you have set the
correct tyre pressure.
If an incorrect tyre pressure is set, these
incorrect values wil lbemonitored.
At yre with insufficient pressure results in
vehicle instability when driving, thu sincreas-
ing the risk of an accident.
X Make sure that the key is in pos i-
tion 2(Ypage139) in the igniti onlock.
X Press =or; on the steering wheel
to select the Serv. menu.
X Press 9or: to select Tyre pres‐ sure .
X Press the abutton.
The RunF lat Indicato ractive Restart with OK message ap
pears in the
multifunction display. If you wis
htoconfirm the restart:
X Press the abutton.
The Tyre press. no wOK? message
ap pe ars in the multifunction display.
X Press the 9or: button to select
Yes .
X Press the abutton.
The RunF lat Indicato rrestarted message ap
pears in the multifunction dis-
play.
After ateach-in period, the tyr epressure
loss warn ings ystem wil lmonitor the set
tyr ep ressures of all fou rtyres.
If you wis htocancel the restart:
X Press the %button.
or
X If the Tyre press. now OK? message
appears ,press 9 or: to select
Cancel .
X Press the abutton.
Th et yre press urev alues stored at the last
restart wil lcontinue to be monitored. Tyre pressur
emonitor
Important safety notes If
at yre press urem onitor system is fitted, the
vehicle's wheels have sensor sfitted that
monitor the tyre pressures in all four tyres.
The tyre pressure monitor warns you when
the pressure drops in one or more of the
tyres. The tyre pressure monitor only func-
tions if the correct sensors are fitted to all
wheels. G
WARNING
The tyre pressure monitor does not warn you
of an incorrectly set tyre pressure. The table
on the inside of the fuel filler flap wil lhelp you
decide whether the tyre pressures should be
correc ted.
The tyr epressure monitor is not abl etow arn
you of asudden loss of pressure, e.g. if the Tyr
epressure
361Wheels and tyres
Z

tyre is penetrated by
aforeign object .Inthe
event of asudden loss of pressure, bring the
vehicl etoah altbyb rakingcarefully. Do not
make any sudden steering movements when
doing so.
Informatio nontyre pressures is displayed in
the multifunction display. After afew minutes
of driv ing, the curren ttyre pressure of each
tyre is sho wn inthe multifunction display.
i Thet yre pressure values indicated by the
on-board computer may differ from those
measured at afilling station with apressure
gauge. Th etyre pressures shown by the on-
board computer refer to thos emeasured at
sea level. At high altitudes, the tyr epres-
sure values indicated by apressure gauge
are higher than thos eshown by the on-
boar dcomputer .Inthis case ,donot reduce
the tyr epressures.
i Theo peration of the tyr epressure moni-
to rc an be affected by interference from
radio transmitting equipment (e.g. radio
headphones ,two-way radios) that may be
being operated in or near the vehicle.
Checking tyr epressure electronically X
Make sure that the key is in position 2
(Y page 139) in the ignitio nlock.
X Press the =or; button on the steer-
ing wheel to select the Serv. menu.
X Press the 9or: button to select
Tyre pressure .
X Press the abutton.
The curren ttyre pressure for each wheel
will be displayed in the multifunction dis-
play.
If the vehicle has been parked for longe rthan
20 minutes, the Tyre pressures will be
displaye
dafter afew minutes of driving message appe
ars.
After ateach-in period, the tyr epressure
monito rautomatically recognise snew
wheels or new sensors. As long as aclear
allocation of the tyre pressure values to the individual wheels is not possible
,the Tyre pressure monito
ractive displa
ymes-
sage is shown instead of the tyr epressure
display. Th etyre pressures are already being
monitored.
i Ifas pare wheel/emergenc yspare wheel
is fitted, the system may continue to show
the tyr epressure of th ewheel that has
been removed for afew minutes. If this
occurs, note that the value displayed for
the position where the spare wheel/emer-
gency spare wheel is fitted is not the same
as the spare wheel/emergenc yspare
wheel's current tyr epressure.
Tyre pressure monito rwarning mes-
sages If the tyre pressure monitor detects
asignifi-
cant pressure loss on one or more tyres, a
warnin gmessage is shown in the multifunc-
tion display. Awarning ton ealso sounds and
th et yrep ressure warning lamp ligh tsup in
the instrumen tcluster.
Eac htyret hat is affected by asignificant loss
of pressure is highlighted in th epressure dis-
play.
If the Please correc ttyrep ressure messag
eappear sinthe multifunctio ndis-
play:
X Chec kthe tyr epressure on all fou rwheels
and correc titifn ecessary.
i If the wheel positions on the vehicle are
inter changed, the tyre pressures may be
displ ayed for th ewrong positions for a
short time .This is rectified after afew
minutes of driving, and the tyr epressures
are displayed for th ecorrect positions.
Restarting th etyre pressure monitor When yo
urestar tthe tyr epressure monitor,
all existing warning message sare deleted and
th ew arning lamps go out. The monitor uses
the currently set tyre pressures as the refer-
ence values for monitoring. In most cases, the
tyre pressure monitor will automatically 362
Tyr
epressureWheels and tyres