
R
If the Rectify tyre pressure
Rectify tyre pressure message
appears in the multifunction display, the tyre
pressure in at least one tyre is too low. The
tyre pressure must be corrected when the
opportunity arises.
R If the Check Check tyre(s)
tyre(s) message appears in the
multifunction display, the tyre pressure in at
least one tyre has droppe dsignificantly. The
tyres must be checked.
R If the Warning tyre defect Warning tyre defect message
appears in the multifunction display, the tyre
pressure in at least one tyre has droppe dsud-
denly.T he tyres must be checked.
Observe the instructions and safety notes in the display messages in the "Tyres" section
(Y page 150).
If the positio nofthe wheelsont he vehicle is
changed, the tyre pressures may be displayedin the wrong positions for ashort time. After afew
minutes of driving, this is rectified and the tyre
pressures are displayedint he correct positions.
Restarting the tyre pressure monitor When you restart the tyre pressure monitor, all
existing warning messages are deleted and the
h
warning lamp goes out. The monitor uses
the currently set tyre pressures as the reference valuesf or monitoring. In most cases, the tyre
pressure monitor will automatically detect the
new reference values after you have changed
the tyre pressure. However, you can also set
reference values manually as described here.
The tyre pressure monitor then monitors the
new tyre pressure values.
X Use the table on the inside of the fuel filler flap
to ensure that the tyre pressure is set cor-
rectly in all four tyres for the curren toperating
conditions.
Observe the notes on tyre pressure
(Y page 238).
X Make sure that the key is in position 2in the
ignition lock.
X Press the =or; button on the steering
wheel to select the Serv.
Serv. menu.
X Press the 9or: button to select
Tyre pressure Tyre pressure .
X Press the abutton.
The multifunction display shows the current
tyre pressure for each tyre or the Tyre
Tyre pres‐
pres‐ sures
sures
will
willbe
bedisplayed
displayed after a
after afew
few
minutes of driving
minutes of driving message appears.
X Press the :button.
The Use
Use current
current pressures
pressures as
asnew
new ref‐
ref‐
erence
erence values
valuesmessage appears in the mul-
tifunction display.
If you wish to confirm the restart:
X Press the abutton.
The Tyre
Tyre press.
press. monitor
monitor restarted
restarted mes-
sage appears in the multifunction display.
After you have driven for afew minutes, the
system checks whether the current tyre pres-
sures are within the specified range. The new tyre pressures are then accepted as refer-
ence valuesa nd monitored.
If you wish to cancelt he restart:
X Press the %button.
The tyre pressure valuess tored at the last
restart will continue to be monitored.
Radio type approval for the tyre pres-
sure monitor country Radi
otype approva lnumber Argentina Schrader GG4
Numero de Registro CNC:
H-12338
Brazil see below
Abu
Dhabi,
Dubai,
United
Arab Emi-
rates TRA
REGISTERED NO:
ER0099792/12.
DEALER NO: DA0047074/10
European
Union Hereby, Schrader Electronics
Ltd., declare
sthat this TPM Sisin
compliance with the essential
requirements and other provi-
sions of directive 1999/5/EC.
The declaration of conformity
may be consulted at emcteam@
schrader.co.uk Tyre pressure
241Wheels and tyres Z 

Brazil
Este equipamento opera em caráte
rsecundário,
isto é, não tem direito àproteçã ocontra inter-
ferênci aprejudicial ,mesmo de estaçõe sdo
mesmo tipo, enão pode causa rinterferência a
sistemas operando em caráte rprimário. Changin
gawheel Flat tyre
You can fin dinformation on what to do in the
event of aflat tyr eunder "Breakdown assis-
tance" (Y page 224). Interchanging th
ewheels G
WARNING
Interchangin gthe front and rear wheels may
severely impair the driving characteristics if
the wheels or tyres have different dimensions. The whee lbrakes or suspension components
may alsobed amaged. There is arisk of acci-
dent.
Interchange front and rear wheels only if the
wheels and tyres are of the same dimensions.
! On vehicles fitted with
atyre pressure mon-
itor, electronic components are located in the wheel.
Tyre-fitting tools should not be appliedint he
area of the valve ,asthis coul ddamage the
electronic components.
Only have tyres changed at aqualified spe-
cialist workshop.
Interchanging front and rear wheels of differing
dimensions can render the genera loperating
permi tinvalid.
Always pay attention to the instructions and
safety notes under "Changing awheel"
(Y page2 43). The wear patterns on the front and rear tyres
diffe
rdepending on the operating conditions.
Interchange the wheels before aclear wear pat-
tern has formed on the tyres. Frontt yres typi-
cally wear more on the shoulders, while rear
tyres wear more in the centre.
On vehicles that have front and rear wheels of
the same size, you can interchange the wheels
every 5,000 to 10,00 0kmd epending on the
degree of tyre wear. Ensure that the direction of
rotation is maintained.
Clean the contact surfaces of the wheel and the
brake disc thoroughly every time awheel is
interchanged. Check the tyre pressure and reac-
tivate the tyre pressure monitor if necessary
(Y page 241). Direction of rotation
Tyres with aspecifie ddirection of rotation have
additional benefits, e.g. if there is ariskofa qua-
planing. You will only gain these benefit sifthe
correc tdirection of rotation is observed.
An arrow on th esidewall of th etyrei nd icates its
correc tdirection of rotation.
You may fit th espar ewhee lagainst th edirection
of rotation .Observ ethe time restriction on use
as well as th espeed limitation specifie donthe
spar ewheel. Storin
gwheels
Storet yres that are not being used in acool, dry
and preferably dark place. Protect the tyres
against oil, grease, petrol and diesel. Fitting
awheel
Preparing th evehicle G
WARNING
If yo uremove the spar ewhee lfrom the spare
whee lbracket, the weight distributio nofthe
vehicl echanges .Ifyou have already raised
the vehicle, the jack coul dtip over. There is a
risk of injury.
Remove the spar ewhee lfrom the spar ewheel
bracket before raising the vehicle. Changing
awheel
243Wheels an dtyres Z 

X
Stop the vehicl eonsolid,non-slipper yand
level ground.
X Appl ythe parking brake.
X Move the front wheel stothe straight-ahead
position.
X Shif tthe automatic transmissio ntoposition
P.
X Switch off the engine.
X Ifat raile risc oupled to the vehicle, uncouple
it.
X Remove the vehicl etool sand jack from the
vehicl e(Ypage 223).
X Remove the spare wheel from the spare wheel
bracket (Y page 223).
X Secure the vehicl eagains trolling away.
Securing the vehicle against rolling
away X
Place chocks or other suitable items under
the front and rea rofthe wheel that is diago-
nally opposite the wheel you wish to change.
Raising the vehicle G
WARNING
If you do not position the jack correctl yatthe
appropriate jacking point of the vehicle, the
jack coul dtip over with the vehicl eraised.
There is arisk of injury.
Only position the jack at the appropriate jack-
ing point of the vehicle. The base of the jack
must be positioned vertically,d irectly under
the jacking point of the vehicle.
! Only position the jack at the appropriate
jacking point of the vehicle. Otherwise, you
coul ddamage the vehicle.
Observe the following whenr aisingthe vehi-
cle:
R Use only the vehicle-specific jack that has
been tested and approved by Mercedes-Benz
to rais ethe vehicle. If the jack is used incor-
rectly, it coul dtip over while the vehicl eis
raised.
R The jack is designed only to rais ethe vehicle
for ashort time while awhee lisb eing
changed .Itisnot permissible to use it to per-
form maintenance work under the vehicle. R
Avoid changing the whee lonuphilland down-
hill slopes.
R Before raising the vehicle, secur eitagainst
rolling away by applying the parking brake and
positioning whee lchocks. Do not release the
parking brake whil ethe vehicl eisraised.
R The jack must be place donafirm, flatand
non-slip surface. On aloo se surface, alarge,
fla tload-beari ng underlay must be used .Ona
slippery surface, anon-slip underlay must be
used ,e.g.u se arubber matont iles.
R Do not us ewoode nblocks or similar objects
as ajack underlay .Otherwise, the jack will not
be able to achieve its load-bearing capacity
du etot he restricte dheight.
R Ensure tha tthe distance between the under-
side of the tyr eand the ground does not
exceed 3cm.
R Do not place your hands or fee tunder the
raised vehicle.
R Do not li eunder the raised vehicle.
R Do not start the engine when the vehicl eis
raised.
R Do not open or close adoorw hent he vehicle
is raised.
R Ensure tha tnopersons ar epresent in the
vehicl ewhenr aisin gthe vehicle. X
Using wheel wrench :,loosen the bolts on
the wheel you wish to change by abouto ne
full turn. Do not unscrew the bolts completely. 244
Changing
awheelWheels and tyres