Page 425 of 497

Important safety notes
The tyr
epressur ewarning system does not
warn you of an incorrectl yset tyr epressure.
Observ ethe note sont herecommended tyre
pressur e(Ypage 420).
The tyr epressur eloss warning does not
replace th eneedtor egularly chec kthe tyre
pressures. An eve nloss of pressur eonsev-
eral tyres at th esame time canno tbedetec-
te dbyt hetyrep ressur eloss warning system.
The tyr epressur emonitor is no table to warn
you of asudde nloss of pressure, e.g. if the
tyr eisp enetrated by aforeign object. In the
event of asudde nloss of pressure, brin gthe
vehicl etoah alt by braking carefully. Avoid
abrup tsteering manoeuvres.
The function of th etyrep ressur eloss warning
system is limited or delayed if:
R snow chains are fitte dtoyour vehicle's
tyres.
R road condition sare wintry.
R you are driving on san dorgravel.
R you adopt averys port ydriving style (cor-
nerin gath igh speeds or driving wit hhigh
rates of acceleration).
R you are towin gaveryh eav yorl argetrailer.
R you are driving wit haheavyload (in the
vehicl eoront heroof).
Restarting th etyrep ressure loss warn-
ing system Restart th
etyrep ressur eloss warning system
if you have:
R changed th etyrep ressure
R changed th ewheels or tyres
R fitte dnew wheels or tyres
X Befor erestarting ,makes ure that th etyre
pressures are set properly on all four tyres
for th erespective operating conditions.
The recommended tyr epressures can be
foun dint hetyrep ressur etable on th efuel
filler flap.
The tyr epressur eloss warning system can
only giv ereliable warning sifyou have set th
ec orrect tyrep ressure. If an incorrect
tyr ep ressur eisset,the se incorrec tvalues
will be monitored.
X Observ ethe note sint hesection on tyre
pressures (Y page 420).
X Mak esure that th ekeyis in position 2in the
ignition loc k(Ypage 179).
X Press the =or; buttononthesteer-
ing whee ltos elect the Serv.
Serv. menu.
X Press the 9or: buttononthesteer-
ing whee ltos elect the Tyrep ressure
Tyr ep ressure
menu.
X Press the abutton.
The Run Fla tIndicator active
Run Fla tIndicator active
Restart Restart with
withOK
OKmessage appear sinthe
multifunction display.
If you wish to confirm th erestart:
X Press the abutton.
The Tyrep ress. now OK?
Tyr ep ress. now OK? message
appear sinthemultifunction display.
X Press the 9or: buttontos elect
Yes
Yes .
X Press the abutton.
The Run Fla tIndicator restarted
Run Fla tIndicator restarted
message appear sinthemultifunction dis-
play.
Afte rateach-in period, th etyrep ressure
loss warning system will monitor th eset
tyr ep ressures of all four tyres.
If you wish to cance lthe restart:
X Press the %button.
or
X When the Tyre
Tyre press. press. now
now OK?
OK?message
appears, press the 9or: buttonto
select Cancel
Cancel .
X Press the abutton.
The tyr epressur evalue sstoredatt helast
restar twill continue to be monitored. 422
Tyre pressureWheels and ty
res
Page 426 of 497

Tyre pressure monitor
General notes If
at yrep ressure monitor system is fitted, the
vehicle's wheels have sensor sfitte dthat
monitor the tyr epressures in al lfou rtyres.
The tyr epressure monitor warns yo uifthe
pressure drops in one or mor eofthe tyres.
The tyr epressure monitor onl yfun ctions if
the corresponding sensor sarefitte dtoa ll
wheels.
Informatio nontyrep ressures is shown in the
multifunctio ndisplay .After afew minute sof
driving ,the current tyr epressure of each tyre
is shown in the Service
Service menu of the multi-
functio ndisplay ,see illustratio n(example). Example: Saloon
,current tyr epressure display
For furthe rinformatio nondisplaying this
message ,refer to the "Checking the tyr epres-
sure electronically" sectio n(Ypage 424).
Important safety notes It is the driver's responsibility to set the tyre
pressure to the recommende
dcoldt yrep res-
sure suitabl efor the operating situation
(Y page 420). Note tha tthe correct tyr epres-
sure for the current operating situatio nmust
first be taught-i ntothe tyr epressure monitor.
If ther eisas ubstantial loss of pressure, the
warnin gthreshold for the warnin gmessage is
aligned to the reference values taught-in.
Restart the tyr epressure monitor after
adjusting to the col dtyrep ressure
(Y page 424). The current pressures are
saved as new reference values. Thi swill
ensur ethataw arnin gm essage will only
appear if the tyr epressure drops significantly.
The tyr epressure monitor does not warn you
of an incorrectly set tyr epressure. Observe the note
sonthe recommende dtyrep ressure
(Y page 420).
The tyr epressure monitor is not able to warn
yo uofas uddenlossofp ressure, e.g .ifthe
tyr eisp enetrated by aforeign object. In the
event of asudde nlossofp ressure, bring the
vehicl etoah altbyb raking carefully. Avoid
abrupt steering manoeuvres.
The tyr epressure monitor ha sayelloww arn-
ing lamp in the instrument cluster for indicat- ing apressure loss or malfunction. Depending
on how the warning lamp flashe sorlights up,
at yrep ressure tha tist oo lo woram alfunc-
tio nint he tyr epressure monitor is indicated:
R if the warnin glam pisl itcontinuously ,the
tyr ep ressure on one or mor etyres is sig-
nificantl ytoo low. The tyr epressure moni-
tor is not malfunctioning.
R if the warnin glam pflashe sfor around a
minute and the nremains li tconstantly, the
tyr ep ressure monitor is malfunctioning.
In additio ntothe warning lamp, amessage
appear sinthe multifunctio ndisplay .Obser ve
the informatio nondisplay messages
(Y page 322).
It ma ytake up to ten minute sfor am alfunc-
tio noft he tyr epressure monitor to be indi-
cated. Amalfunctio nwillbei ndicated by the
tyr ep ressure warnin glam pflashing for
approximately one minute and the nremain-
ing lit. When the faul thas been rectified, the
tyr ep ressure warning lamp goes ou tafter you
have driven for afew minutes.
The tyr epressure values indicated by the on-
boar dcompute rmaydiffe rfromt hos em eas-
ured at afilling statio nusing apressure
gauge. The tyr epressures shown by the on-
boar dcompute rrefer to thos emeasured at
se al evel.Ath igha ltitudes, the tyr epressure
values indicated by apressure gaug eare
highe rtha nt hos eshown by the on-board
computer. In thi scase, do not reduce the tyre
pressures.
The operatio nofthe tyr epressure monitor
can be affecte dbyinterference fro mradio
transmitting equipment (e.g. radi ohead- Tyre pressure
423Wheelsand tyres Z
Page 427 of 497

phones, two-way radios) that may be being
operated in or near the vehicle.
Checking the tyr epressure electroni-
cally X
Make sure that the key is in position 2
(Y page 179) in the ignition lock.
X Press the =or; button on the steer-
ing wheel to select the Service
Servicemenu.
X Press the 9or: button to select
Tyre pressure
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 over
20 minutes, the Tyre Tyrepressures
pressures will
willbe
be
displayed after afew minute sof
displayed after afew minute sof
driving
driving message appears.
After ateach-in period, the tyre pressure
monitor automatically detects new wheels or new sensors. As long as aclear allocation of
the tyre pressure values to the individual
wheels is not possible, the Tyre pressure Tyre pressure
monito ractive
monito ractive display message is shown
instead of the tyre pressure display. The tyre
pressures are already being monitored.
If an emergency spare wheel is fitted, for a
few minutes the system may continue to
show the tyre pressure of the wheel that has
been removed. If this occurs, not ethat the
value displayed for the position where the
spare wheel is fitted is not the same as the
curren ttyre pressure of the emergency spare
wheel.
Warning messages of the tyr epressure
monitor If the tyre pressure monitor detects
apres-
sure loss in one or more tyres, awarning mes-
sage is shown in the multifunction display and
the yellow tyre pressure monitor warning
lamp comes on.
R If the Please correc ttyre pressure
Please correc ttyre pressure
message appears in the multifunction dis- play, the tyre pressure in at least one tyre is
too low and must be corrected at the next
opportunity.
R If the Check tyre(s) Check tyre(s) message appears in
the multifunction display, the tyre pressure in one or more tyres has dropped signifi-
cantly and the tyres must be checked.
R If the Warnin gtyre defect
Warnin gtyre defect message
appears in the multifunction display, the
tyre pressure in one or more tyres has drop-
ped suddenly and the tyres must be
checked.
Observ ethe instructions and safety notes in
the display messages in the "Tyres" section
(Y page 322).
If the wheel position sonthe vehicle are inter-
changed, the tyre pressures may be displayed for the wrong position sfor as hort time. After
af ew minutes of driving, this is rectified and
the tyre pressures are displayed for the cor-
rect positions.
Restarting the tyr epressure monitor When you restart the tyre pressure monitor,
all existing warning messages are deleted and
the warning lamps go out. The monitor uses
the currently set tyre pressures as the refer-
enc evalues for monitoring. In most cases, the
tyre pressure monitor will automatically
detec tthe new referenc evalues after you
have changed the tyre pressure. However,
you can also define referenc evalues man-
ually 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
correctly in all four tyres for the current
operatin gconditions.
Also observe the notes in the section on
tyre pressures (Y page 420).
X Make sure that the key is in position 2in the
ignition lock.
X Press the =or; button on the steer-
ing wheel to select the Service Servicemenu. 424
Tyrep
ressureWheels and tyres
Page 428 of 497

X
Press the 9or: button to select
Tyre pressure
Tyre pressure.
X Press the abutton.
The multifunction display shows the cur-
rent tyre pressure for the individual tyres or
the Tyre pressures will be dis‐
Tyre pressures will be dis‐
played
played after a
after a few
fewminutes
minutes of
ofdriv‐
driv‐
ing
ing message.
X Press the :button.
The Use current pressures as new
Use current pressures as new
reference values
reference values message appears in
the multifunction display.
If you wish to confirm the restart: X Press the abutton.
The Tyre press. monitor restarted
Tyre press. monitor restarted
message appears in the multifunction dis-
play.
After you have driven for afew minutes, the
system check swhether the curren ttyre
pressures are within the specified range.
The new tyre pressures are then accepted
as reference values and monitored.
If you wish to cancel the restart:
X Press the %button.
The tyre pressure values stored at the last
restart will continue to be monitored.
Radio typea pproval for the tyrep res-
sure monitor Country Radio typea
pproval number Argen-
tina MW2433A
H-12337
GG4
H-12338
Brazil 2770-12-8001
Model: MW2433A
0381-13-8001
Model: GG4 Country Radio typea
pproval number Abu
Dhabi
Dubai TRA, Registered NO
ER0092100/12
TRA, Registered NO
ER0099792/12
TRA, Registered NO
ER0076990/11
Dealer NO: DA0047074/10 Jordan Model: Gen Alpha Wal
2TPMS
transmitter
Type Approval Number:
TRC/LPD/2012/114
Model: Gen Gamma Gen 4
433.92 Mhz.
Type Approval Number:
TRC/LPD/2012/190
Model: Corax 3MRXMC34MA4
Type Approval Number:
TRC/LPD/2011/158
Type Number: LPD Morocco MR7319 ANRT 2012/
11/07/2012
MR7672 ANRT 2012/
23/11/2012
MR6706 ANRT 2011
Moldova 1024
Philip-
pines No: ESD-1206394C
No: ESD-1306871C
Serbia И0
11 12 Singa-
pore Compliance with IDA Standard
DA-1
03365 South
Africa TA-2012/719
TA-2012/1540
TA-2011/1370 Tyrep
ressure
425Wheels and tyres Z
Page 429 of 497

Changing
awheel Flat tyre
You can fin dinformatio nonwhat to do in the
event of aflat tyr einthe"Breakdown assis-
tance" sectio n(Ypage 397). Information on
driving wit hMOExtended tyres in th eevent of
af lat tyr ecan be foun dunde r"Breakdown
assistance" (Y page 398).
Vehicles with an emergency spare wheel: in th eevent of aflat tyre, th eemergency
spar ewheel is fitte daccording to th edescrip-
tio nu nde r"Fittin gaw heel" (Y page 426). Interchanging th
ewheels G
WARNING
Interchangin gthe fron tand rear wheel smay
severely impai rthe driving characteristic sif
th ew heel sort yres have different dimensions.
The wheel brakes or suspension components may also be damaged. Ther eisariskofa cci-
dent.
Interchange fron tand rear wheel sonlyift he
wheel sand tyres are of th esame dimensions.
! On vehicle
sfitte dw ithat yrep ressure
monitor, electronic component sare loca-
te dint hewheel.
Tyre-fittin gtools should no tbeapplied in
th ea rea of th evalve, as this could damage
th ee lectronic components.
Only have tyres changed at aqualified spe-
cialist workshop.
Interchangin gthe fron tand rear wheels of
differin gdimension scan render th egeneral
operatin gpermit invalid.
Observ ethe instruction sand safety note sin
th e" Fittin gaw heel" sectio n(Ypage 426).
The wear pattern sonthefron tand rear tyres
differ dependin gontheoperatin gconditions.
Interchange th ewheels before aclear wear
pattern has formed on th etyres. Fron ttyres
typically wear mor eontheshoulder sand the
rear tyres in th ecentre. On vehicle
stha th ave th esame siz efront and
rear wheels ,you can interchange th ewheels
every 5,000 to 10,00 0kmdependin gonthe
degree of tyr ewear. Ensure that th edirection
of rotatio nismaintained.
Clean th econtac tsurfaces of th ewheel and
th eb rak edisc thoroughly every tim eawheel
is interchanged. Chec kthe tyrep ressure and,
if necessary, restar tthe tyrep ressure loss
warning system (Y page 422) or thetyrep res-
sure monito r(Ypage 424). Direction of rotation
Tyres wit haspecifie ddirection of rotation
have additional benefits, e.g .ifthere is arisk
of aquaplaning .Thes eadvantages can only be
gained if th etyres are fitte dcorres ponding to
th ed irection of rotation.
An arrow on th esidewal lofthetyreindicates
its correct direction of rotation. Storing wheels
Store wheels that are no tbein gused in acool,
dry and preferabl ydark place. Protect the
tyres against oil, grease, petrol and diesel. Fitting
awheel
Preparin gthe vehicle X
Stop th evehicle on solid ,non-sl ippery and
leve lground.
X Apply th eparking brake.
X Mov ethe fron twheels to th estraight-
ahead position.
X Vehicles with manua ltra nsmission:
depress th eclutch pedal fully and engage
first or revers egear.
X Vehicles with automatic transmission:
shif tthe transmission to position P.
X Vehicle swithA IRMATIC: mak esure that
"normal" leve lisselecte d(Ypage 231).
X Switch off th eengine. 426
Changing
awheelWheels and tyres
Page 430 of 497

X
Remove th ekeyfrom th eignition lock.
or, on vehicles wit hKEYLESS‑GO:
X Ope nthe driver's door.
The on-boar delectronics no whaves tatus
0 .T his is th esam east hekeyh avin gbeen
removed.
X Remove th eStart/Sto pbutto nfromt he
ignition loc k(Ypage 179).
X If included in th evehicl eequipment,
remove th etyre-chang etoolkitfrom the
vehicl e(Ypage 395).
X Safeguar dthe vehicl eagainst rollin gaway.
i Apart from som
ecountry-specific var-
iants ,vehicles are no tequipped wit htyre-
changin gtools. Some tools for changin ga
whee lare specific to th evehicle. Fo rmore
information on whic htools are require dto
perfor mawheelcha ng eony our vehicle,
consult aqualified specialist workshop.
Necessary tyre-changin gtools may
include, for example:
R Jack
R Wheel chock
R Wheel wrench
Securing th evehicle against rolling
away If your vehicl
eisequipped wit hawheelchock,
it can be found in th etyre-chang etoolkit
( Y page 395).
The foldin gwhee lchock is an additional
securin gmeasure to preven tthe vehicl efrom rollin
gaway, for exampl ewhen changin ga
wheel.
X Fold bot hplates upwards :.
X Fold out lower plate ;.
X Guide th elugs on th elower plat efully into
th eo penings in base plate =. Securin
gthe vehicl eonlevel ground (example:
Saloon)
X On level ground: placechock soro ther
suitable items under th efront and rear of
th ew hee ltha tisd iagonally opposit ethe
whee lyou wish to change. Securin
gthe vehicl eons light downhill gradients
(example: Saloon)
X On sligh tdownhil lgradie nts:place
chocks or other suitable items in fron tof
th ew heels of th efront and rear axle.
Raisin gthe vehicle G
WARNING
If you do no tposition th ejackc orrectly at the
appropriat ejacking poin tofthevehicle, the Changing
awheel
427Wheels and tyres
Z
Page 431 of 497

jack could tip ove
rwitht he vehicl eraised.
There is ariskofi njury.
Onl yposit iont he jack at the appropriate jack-
ing point of the vehicle. The base of the jack
must be positioned vertically, directl yunder
the jacking point of the vehicle.
Observe the following when raising the vehi-
cle:
R to rais ethe vehicle, onl yusethe vehicle-
specific jack tha thas been teste dand
approved by Mercedes-Benz. If the jack is
used incorrectly ,itcould tip ove rwhile the
vehicl eisraised.
R the jack is designe donlytor aiseand hold
the vehicl efor as hort time whil eawheel
is being changed. It is not suitabl efor per-
formin gmaintenance work under the vehi-
cle.
R avoi dchanging the whee lonuphilland
downhil lslope s.
R befor eraisi ng the vehicle, safeguard it from
rolling away by applying the parking brake
and positioning whee lchocks. Never
release the parking brake whil ethe vehicle
is raised.
R the jack must be place donafirm, flatand
non-sli psurface. On aloo se surface, a
large ,flatl oad- bearing underlay must be
used .Ona slippery surface, anon-slip
underlay must be used ,e.g.r ubbe rmats.
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 etothe restricted
height.
R make sure tha tthe distance between the
undersid eofthe tyres and the ground does
not exceed 3cm.
R neve rplace your hands or fee tunder the
raised vehicle.
R do not li eunder the vehicle.
R do not start the engine when the vehicl eis
raised. R
do not open or close adoorort he boot lid/
tailgate when the vehicl eisraised.
R make sure tha tnopersons ar epresent in
the vehicl ewhent he vehicl eisraised.
AM Gvehicle swithP erformanc eStudio
equipment: the wheelbolts ar ecovered by a
hu bc ap.B efore yo ucan unscrew the wheel
bolts ,you must remove the hu bcap. X
To remove: turnthe centre cove rofhub
cap :anti-clockwise and remove.
X To fit: beforefitting, ensur etha thub cap :
is in the open position. To do this, tur nthe
centre cove ranti-clockwise.
X Positio nhub cap :and tur nthe centre
cove rclockwise unti lhub cap :engages
physicall yand audibly.
X Make sure tha thub cap :is fitted
securely. X
Using whee lwrench ;,l oosent he bolts on
the whee lyou wish to change by abou tone
full turn. Do not unscrew the bolts com-
pletely. 428
Changin
gawheelWheels an dtyres
Page 432 of 497

Jacking points (example: Saloon)
The jackin gpoints are located jus tbehin dthe
front wheel arches and jus tinfront of th erear
wheel arches (arrows).
AMG vehicles and vehicles with AMG
equipment: to protect thevehicle body, the
vehicle has covers fitted nex ttothejacking
points on th eoute rsills. Cover
,front (example: vehicles with AM Gsports
package)
X AMG vehicles and vehicles with AMG
equipment: fold cover=upwards. X
Position jack Aat jackin gpoint ?. X
Mak esure that th ebase of th ejackisp osi-
tioned vertically unde rthe jackin gpoint.
X Turn crank Bclockwis euntil jack Asits
completely on jackin gpoint ?.T he base of
th ej ackm ust lie evenly on th eground.
X Turn crank Buntil th etyreisr aisedam ax-
imum of 3cmoff theground.
Removing awheel !
AMG vehicles:
duringremoval and repo-
sitioning of th ewheel, th ewheel rim can
strik ethe ceramic-brake disc and damage
it. Therefore, tak eprecaution sand have a
second person assist you. Alternatively,
you can use asecond centring pin.
! Do not place wheel bolt
sinsandord irt.
The threads of th ewheel bolt sand wheel
hubs could otherwise be damaged when
th eb oltsa re tightened. X
Unscrew th euppermost wheel bolt com-
pletely.
X Screw centring pin :intot he thread
instead of th ewheel bolt. Changing
awheel
429Wheels and tyres Z