flat tire MERCEDES-BENZ METRIS 2016 MY16 Operator’s Manual

Regular wheel and tire checks
GWARNING
Damaged tire scan cause tire inflation pres-
sure loss. As aresult, yo ucould lose control of
your vehicle. There is ariskofa ccident.
Check the tire sregularl yfor signs of damage
and replace any damaged tire simmediately.
Check the wheel sand tire sofyourv ehicl efor
damag eregularly, i.e .atleast every two weeks,
as well as afte rdriving off-road or on rough
roads. Damaged wheel scan cause alos soft ire
pressure. Payp articula rattention to damage
such as:
Rcuts in the tires
Rpunctures
Rtears in the tires
Rbulges on tires
Rdeformation or severe corrosio nonwheels
Regularly check the tire trea ddepth and the
condition of the trea dacross the wholew idth of
the tire (
Ypage 268). If necessary, turn the
front wheel stofullloc kino rder to inspect the
inner sid eofthe tire surface.
All wheel smusth aveav alve cap to protect the
valve against dirt and moisture. Do not install
anything onto the valve othe rthan the standard
valve cap or othe rvalve cap sapproved for your
vehicl ebyd ealers listed on the inside of the
front cover. Do not install any othe rvalve caps
or systems ,e.g. tire pressure monitor systems.
Regularly check the pressure of al lthe tires,
particularly prior to long trips. Adjust the tire
pressure if neces sary (
Ypage 270).
The service life of tire sdepends on various fac-
tors, including the following:
Rdriving style
Rtire pressure
Rmileage
Tire tread
GWARNING
Insufficient tire trea dwillr educe tire traction.
The tire is no longer able to dissipate water.
Thi sm eans that on we troa ds urfaces, the risk
of hydroplaning increases, in particula rwhere
speed is not adapted to suit the driving con-
ditions .There is ariskofa ccident.
If the tire pressure is too hig hortoo low, tires
may exhibi tdifferent level sofwearatd iffer-
ent locations on the tire tread. Thus, you
shoul dregularl ycheck the trea ddepth and
the condition of the trea dacross the entire
width of al ltires.
Minimum tire trea ddepth for:
RSummer tires: âin (3 mm)
RM+S tires: ãin (4 mm)
For safety reasons,r eplace the tiresbefore
the legall yprescribed limit for the minimum
tire trea ddepth is reached.
Marker :shows the location where the bar
indicator (arrow )for trea dwearisi ntegrated
into the tire tread.
Tread wear indicators (TWIs) are required by
law. Six indicators are positioned ove rthe tire
tread. The yare visible once the trea ddepth is
approximately áin (1.6 mm). If this is the case,
the tire is so worn that it mus tbereplaced.
Selecting,m ounting and replacing
tires
ROnly mount tire sand wheel softhe same type
and make.
ROnly us ewheelsw itht ire size sapproved by
Mercedes-Benz.
ROnly mount tire softhe correct size onto the
wheels.
RBrea kinn ew tire satmoderate speeds for the
firs t65m iles (100 km).
268Operation
Wheel sand tires

Snow chains
GWARNING
If snow chains are installed to the front
wheels, they may drag against the vehicle
body or chassis components. This could
cause damage to the vehicle or the tires.
There is arisk of an accident.
To avoid hazardous situations:
Rnever install snow chains to the front
wheels
Ralways install snow chains in pairs to the
rear wheels.
GWARNING
If you drive too fast with snow chains moun-
ted, they may snap. As aresult, you could
injure others and damage the vehicle. There is
ar isk of an accident.
Observe the maximum permissible speed for
operation with snow chains.
Observe the country-specific laws and regula-
tions for operation with snow chains.
!Check the snow chains for damage before
mounting them. Damaged or worn snow
chains may snap and damage the following
components:
Rwheel
Rwheel housing
Rwheel suspension
For this reason, you must use only snow
chains that are free of defects. Observe the
manufacturer's mounting instructions.
!Vehicles with steel wheels: if you mount
snow chains on steel wheels, you may dam-
age the hub caps. Remove the hub caps from
the relevant wheels before mounting the
snow chains.
Snow chains increase traction on roads in wintry conditions.
For safety reasons, Mercedes-Benz recom-
mends that you only use snow chains or traction
aids which have been approved for Mercedes-
Benz vehicles. The snow chains or traction aids
must be of class Uormeet the SAE type U
specification. Information about snow chains can be obtained
from any Mercedes-Benz Commercial Van Cen-
ter.
When mounting snow chains, please bear the
following points in mind:
RSnow chains cannot be mounted on all
wheel/tire combinations
.When mounting the
snow chains, note the permissible tire and
snow chain dimensions. Observe the restric-
tions on the use of snow chains under
"Wheel/tire combinations "(
Ypage 291).
RMount snow chains only in pairs and only to
the rear wheels. Observe the manufacturer's
mounting instructions.
ROnly use snow chains when the road is cov-
ered byalaye rofs now. Remove the snow
chains as soon as possible when you come to
ar oad that is not snow-covered.
RThe use of snow chains may be restricted by
local regulations. Observe the appropriate
regulations before mounting snow chains.
RWhen driving with snow chains installed, do
not exceed the maximum permissible speed
of 30 mph (50 km/h).
RCheck the tension of the chains after adis-
tance of approximately 0.5 miles (1.0 km).
You may wish to deactivate ESP
®when pulling
away with snow chains installed (Ypage 64).
This allowst he wheels to spin in acontrolled
manner, achieving an increased driving force
(cut tinga ction).
Tire pressure
Tire pressures pecifications
Important safety notes
GWARNING
Underinflated or overinflated tires pose the
following risks:
Rthe tires may burst, especially as the load
and vehicle speed increase.
Rthe tires may wear excessively and/or
unevenly, which may greatly impair tire
traction.
Rthe driving characteristics, as well as steer-
ing and braking, may be greatly impaired.
There is arisk of an accident.
270Tire pressure
Wheels and tires

Follow recommendedtire inflation pressures
and check the pressure of al lthe tires includ-
ing the spare wheel:
Rmonthly, at least
Rif the loa dchanges
Rbefore beginning along journey
Runder different operating conditions, e.g.
off-roadd riving
If necessary ,correct the tire pressure.
GWARNING
If yo ufit unsuitable accessories onto tire
valves, the tire valves may be overloaded and
malfunction, which can cause tire pressure
loss. Due to thei rdesign, retrofitted tire pres-
sur em onitors keep the tire valve open. This
can also result in tire pressure loss. There is a
risk of an accident.
Only screw the standard valve cap or other
valve cap sapproved by Mercedes-Benz for
your vehicle onto the tire valve.
!The pressure difference between tires on
any one axl emustb enog reater than 10 kPa
(0.1 bar/1.5 psi).
iThe specifications shownont he sample Tire
and Loading Information placard and tire
pressure tabl eare examples. Tir epressure
data are vehicle-specific and may deviate
from the data illustrate dhere .The tire pres-
sur especifications that are valid for your vehi-
cle can be found on the Tir eand Loading
Information placard and the tire pressure
tabl eont he vehicle.
HEnvironmental note
Check the tire pressure regularly ,atleast
ever y14d ays.
General notes
You will find information on tire pressure for the
vehicle' sfactory-mounted tires on the plates
described here.
The recommende dtire pressure for various
operating conditions can be found on the Tire
and Loading Information placard on the B-pillar
on the driver's sid eofthe vehicle or on the tire
pressure tabl einside the fue lfiller flap. Furthe
rinformation on tire pressure can be
obtained at aquali fied specialist workshop.
Tire and Loading Informatio nplacard
Example: Tir eand Loading Information placard
The Tir eand Loading Information placard is on
the B-pilla ronthe driver's sid eofthe vehicle.
The Tir eand Loading Information placard con-
tains recommende dtire pressures :for cold
tires .Recommended tire pressures :are valid
for the maximum permissibl eloa da nd up to the
maximum permissibl espeed of the vehicle.
Tire pressure271
Wheels and tires
Z

Important notes on tire pressure
GWARNING
If th etirep ressur edrops repeatedly, th e
wheel, valv eortirem ay be damaged. Tir e
pressur ethatist oolow may result in atire
blow-out .Ther eisar iskofana ccident.
RCheckthe tire for foreign objects .
RCheckwhether th ewhee lislosing air or th e
valv eisl eaking .
If you are unable to rectify th edamage, con-
tac taq ualified specialist workshop.
Use asuitable pressur egage to chec kthe tire
pressure. The outer appearanc eofatired oes
no tp ermit any reliable conclusio nabout th etire
pressure. On vehicles equipped wit hthe elec -
tronic tire pressur emonitor, th etirep ressur e
can be checke dusingthe on-board computer.
The tire temperature and pressur eincreas e
when th evehicl eisinm otion.This is dependen t
on th edriving spee dand th eload.
Therefore, you should only correc ttirep ressur e
when th etires are cold.
The tires are cold:
Rif th evehicl ehas been parked for at least
three hour swithout direct sunligh tonthe
tires ,and
Rif th evehicl ehas no tbeen driven further than
1m ile(1.6 km )
Tire temper aturechanges dependingont he
ambient temperature, driving speeda nd tire
load. If th etiret em peratur echanges by 18 ‡
(10 †), th etirep ressure changes by approx-
imately 10 kP a(0.
1b ar/1.5 psi). Taket hisi n
to
accountw hen checking th epressure of warm
tires. Only correc tthe tirep ressure if it is to olow
for th ecurren toperatin gconditions. If you
check th etirep ressure when th etires are warm,
it results in ahigher value than when th etires
are cold. This is normal. Do no tunde rany cir-
cumstances release th eair in orde rtoadjustthe
pressure to th eprescribed value for col dtires.
The tir epressure would otherwise be to olow.
Observ ethe recommended tir epressure for
col dtires on th etirep ressure table in th efuel
fille rflap. Drivin
gwith tir epressure that is to ohigh or too
low can:
Rshorte nthe servic elife of th etires
Rcaus eincreased tir edamage
Rhave anegativ eeffect on handlingc haracter-
istics and thus th edriving safety (e.g. hydro-
planing)
Underinflated or overinflated tires
Underinflated tires:
GWARNING
Tire swith pressure that is to olow can over-
heat and burs tasaconsequence. In addition,
they also suffer from excessive and/or irreg-
ular wear, whichc an severelyimpair thebrak-
ing properties and th edriving characteristics.
Thereisar isk of an accident.
Avoid tir epressurest hata re to olow in all the
tires, includingt hesparew heel.
Underinflate dtires can:
Rfail from beingo verheated
Radversely affect handling
Rwear excessively and/or unevenly
Rhave an adverse effect on fuel consumption
Overinflated tires
GWARNING
Tire swith excessively high pressure can burst
because they are damage dmoree asily by
road debris, potholes etc. In addition,t hey
also suffer from irregular wear, whichc an
severelyi mpair thebraking properties and the
driving characteristics .Thereisar isk of an
accident.
Avoid tir epressurest hatare to ohigh in all the
tires, includingt hesparew heel.
Overinflated tires can:
Rincreas ethe braking distance
Radversely affect handling
Rwear excessively and/or unevenly
Radversely affect ride comfort
Rbe mores usceptible to damage
Tirep ressure273
Wheels and tires
Z

Maximum tire pressures
:Maximumpermitted tire pressure (example)
Never exceed the maximu mpermissible tire
inflation pressure. When adjusting the tire pres-
sure salway sobserve the recommendedt ire
pressure for you rvehicl e(
Ypage270).
iThe actua lvalues for tires are specific to
each vehiclea nd may deviate from the values
in the illustration.
Tire valve (snap-in valve)
Important safety notes
GWARNING
Tire valve that are not approved for you rvehi-
cle by the distributor named on the inside
cover pag emay result in aloss of tire pres-
sure .This may affect road safety .There is a
risk of an accident.
Only use tire valve that are approved for your
vehiclebyt he distributor named on the inside
cover page. Always make sure you have the
correct tire valve type for the tires on your
vehicle.
!Do not screw additiona lweights (check
valves, etc.) onto the tire valves. The elec-
tronic components coul dthus be damaged.
iFor safety reasons, Mercedes-Benz recom-
mends that you only use tire valve sthat have
been tested for use on you rvehicle.
Checking the tire pressure manually
In order to determine and adjust the tire pres-
sures, proceedasf ollows:
XRemove the valve cap of the tire you wis hto
check.
XPress the tire pressure gauge securely onto
the valve.
XRea dthe tire pressure and compare it with the
recommendedv alueont he loading informa-
tion table or the tire pressure table
(
Ypag e270).
XIf the tire pressure is too low ,increas eittothe
recommendedv alue.
XIf the tire pressure is too high ,release air by
pressing downt he metal pin in the valve .Use
the tip of apen, for example. Then, check the
tire pressure again using the tire pressure
gauge.
XScrew the valve cap onto the valve.
XRepeat the steps for the other tires.
Tire pressure monitor
General notes
In vehicles with atire pressure monitor system,
the vehicle's wheels have sensors installed
which monitor the tire pressure in all four tires.
The tire pressure monitor warns you if the pres- sure drops in one or more of the tires. The tire
pressure monitor only functions if the corre-
sponding sensors are installed on all wheels.
Tire pressure display (only on vehicles with steer-
ing whee lbuttons)
On vehicles with steering whee lbuttons, the
current pressure of the individua ltires in the
display can be shownv ia theService
menu.
274Tire pressure
Wheels and tires

For further information on displaying the current
tire pressures, referto"Checking the tire pres-
sur eelectronically" (
Ypage 276).
Important safety notes
GWARNING
Each tire, including the spare (ifp rovided),
should be checked at least once amonth
whe ncold and inflated to the pressure rec-
ommended by the vehicle manufacturer on
the Tir eand Loading Information placard on
the driver's doo rB-pilla rort he tire pressure
label on the inside of the fue lfiller flap. If your
vehicle has tires of adifferent size than the
size indicated on the Tir eand Loading Infor-
mation placard or the tire pressure label ,you
should determine the proper tire pressure for
those tires.
As an added safety feature ,you rv ehicle has
bee nequipped with atire pressure monitoring
system (TPMS) that illuminates alow tire pres-
sur etelltal ewheno ne or more of your tires
are significantly underinflated. Accordingly,
whe nthe low tire pressure telltal eillumi nates,
yo us hould stop and check your tires as soon
as possible, and inflate them to the proper
pressure. Driving on asignificantly underin-
flated tire causes the tire to overheata nd can
lea dtot ire failure. Underinflation also
reduce sfue lefficiency and tire treadl ife, and
may affect the vehicle' shandling and stop-
ping ability.
Please note that the TPMSisn otas ubstitute
for proper tire maintenance, and it is the driv-
er's responsibility to maintain correct tire
pressure, even if underinflation has not
reached the level to trigger illumination of the
TPMSl ow tire pressure telltale.
USA only:
You rvehicle has also bee
nequipped with a
TPM

Sm alfunction indicator to indicate if the
system is not operating properly. The TPMS
malfunction indicator is combined with the
low tire pressure telltale. Whe nthe system
detects amalfunction, the warning lamp will
flash for approximately aminute and then
remain continuously illuminated. This
sequence will be repeated ever ytime the vehi-
cle is starte daslong as the malfunction
exists.
Whe nthe malfunction indicator is illuminated,
the system may not be able to detect or signal
low tire pressure as intended. TPMSm alfunc-
tions may occur for avariety of reasons,
including the mounting of incompatible
replacement or alternate tires or wheels on
the vehicle that prevent the TPMSf rom func-
tioning properly. Alway scheck the TPMSm al-
function telltal eafterreplacing one or more
tires or wheels on your vehicle to ensure that the replacement or alternate tires and wheels
allow the TPMStoc ontinuetofunction prop-
erly.
It is the driver's responsibility to set the tire
pressure to the recommende dcold tire pressure
suitabl efor the operating conditions
(
Ypage 270).
Note that the correct tire pressure for the cur-
rent operating conditions mus tfirs tb ep ro-
gramed into the tire pressure monitor. If there is
as ubstantial los sofpressure, the warning
threshol dfor the warning messag eisaligne dto
the reference value sprograme din. Restart the
tire pressure monito rafte radjusting the cold
tire pressure (
Ypage 277). The current pres-
sures are saved as new reference values. This
will ensure that awarning messag ewillo nly
appea rifthe tire pressure drop ssignificantly.
The tire pressure monito rdoesn ot warn yo uifa
tire pressure is incorrect. Observe the notes on
the

recommende dtire pressure (Ypage 270).
The tire pressure monito risnot able to warn you
of as udden los sofpressure, e.g. following pen-
etration by aforeign object. In this event, brake
the vehicle until it comes to astandstill. Avoid
sudden steering movements.
The tire pressure monito rhas ayello wh
warning lamp in the instrument cluster for indi-
cating pressure loss/malfunctions (USA) or
pressure los s(Ca nada). Depending on how the
warning lamp flashesorl ights up ,anunderin-
flated tire or amalfunction in the tire pressure
monito risdisplayed:
Rif the h warning lamp is li tcontinuously,
the tire pressure on one or more tires is sig-
Tire pressure275
Wheels and tires
Z

rectly, it could tip over while the vehicleis
raised.
RThe vehicle's jack is intended only to rais ethe
vehicl efor as hort time when changing a
wheel. It is not suited for performing mainte-
nance work under the vehicle.
RAvoid changing the whee lonuphill and down-
hill slopes.
RBefore raising the vehicle, secure it from roll-
ing awa ybyapplying the parking brake and
inserting whee lchocks. Never disengage the
parking brake while the vehicl eisraised.
RThe jack must be placed on afirm, flat and
non-slip surface. On aloose surface, alarge,
load-bearing underlay must be used .Ona
slippery surface, anon-slip underlay must be
used ,e.g. rubber mats.
RMake sure that the distance between the
underside of the tires and the ground does not
exceed 1.2 in(3 cm).
RNever place you rhands or feet under the
raised vehicle.
RNever lie under the raised vehicle.
RNever start the engine when the vehicl eis
raised.
RNever open or close adoor or the tailgate/
rear door when the vehicl eisraised.
RMake sure that no persons are present in the
vehicl ewhen the vehicl eisraised.
Jacking points :(rubber stoppers)a re located
just behind the front whee larches and just in
front of the rear whee larches.
XPlace jack ;beneath corresponding jacking
points :.
XTurn handwheel =until jack plate ;sits
securely on jacking point :.
XMake sure the base of jack ;is positioned
vertically beneath jacking point :.
XAssembleadapter?and ratchet Afrom the
vehicl etool kit.
XPlace adapter ?and ratchet Aon the hex-
agon nut of jack ;so that the lettering AB/
DOWN is visible.
XTurn ratchet Ain the AUF/UP directionuntil
the tire is amaximu mof3cm off the ground.
When doing so, jack ;may move to one of
the side support surfaces.
Removin gawheel
!Do not place whee lbolts in sand or on adirty
surface. The bolt and whee lhub threads could
otherwise be damaged when you screw them
in.
XUnscrew the whee lbolts.
XRemove the wheel.
Mountin ganew wheel
GWARNING
Oile dorg reased whee lbolts or damaged
whee lbolts/hu bthreads can caus ethe wheel
bolts to come loose .Asaresult, you could
lose awhee lwhile driving. There is arisk of
accident.
Never oil or greas ewhee lbolts. In the event of
damage to the threads ,contact aqualified
specialist workshop immediately. Have the
damaged whee lbolts or hub threads
replaced/renewed. Do not continue driving.
GWARNING
If you tighten the whee lbolts or whee lnuts
when the vehicl eisraised, the jack could tip
over. There is arisk of injury.
Only tighten the whee lbolts or whee lnuts
when the vehicl eisonthe ground.
Always observe the instructions and safety
notes on "Changing awheel" (
Ypag e286).
288Changing wheels
Wheels and tires