2017 MERCEDES-BENZ SLC warning

Avoi dt ire pressures tha ta re too high in al lt he
tires, including the spare wheel.
Overinflated tire sm ay :R
increase the braking distance R
adversel ya ffect handlingR
wear excessivel ya nd/or unevenlyR
have an adverse effect on rid ec omfortR
be more susceptibl etod amag e
Maximum tire pressures
C
Example: maximu mp er missibl et ire pres-
sure
Never exceed the maximu mp er missibl et ire
inflation pressure. Alway so bs erve the recom-
mended tire pressure for your vehicl ew he n
adjusting the tire pressure ( Y
page 258).
i The actual values for tire sa re vehicle-spe-
cifi ca nd ma yd ev iate from the values in the
illustration.
Checkin gt he tire pressures
Important safety notes Observ et he notes on tire pressure
( Y
page 258).
Informatio nona ir pressure for the tire sony ou r
vehicl ec an be found:R
on the vehicle's Tire and Loading Information
placard on the B-pillar R
on the tire pressure labe lont he fuel fille rf lapR
in the "Tire pressure" section Checkin gt ire pressure sm anuallyTo determine and set the correct tire pressure,
procee dasf ollows: X
Remove the valve cap of the tire tha ti stob e
checked. X
Press the tire pressure gaug es ecurel yo nto
the valve. X
Read the tire pressure and compar eittot he
recommende dv alue on the Tire and Loading
Informatio np la card or the tire pressure table
( Y
page 258). X
If the tire pressure is too low, increase the tire
pressure to the recommende dv alue.X
If the tire pressure is too high, release air. To
do so, press down the meta lp in in the valve,
using the tip of ap en for example. The nc heck
the tire pressure agai nu si ng the tire pressure
checker. X
Screw the valve cap onto the valve. X
Repeat thes es tep sf or the othe rt ires.
Tire pressure loss warning system
(Canada only)
General notes While the vehicl eisinm otion, the tire pressure
loss warning system monitors the set tire pres-
sure using the rotational speed of the wheels.
Thi se nables the system to detect significant
pressure loss in at ire .Ift he speed of rotatio no f
aw heel change sasa resul tofa loss of pressure,
ac orresponding warning message will appear in
the multifunctio nd is play.
Yo uc an recognize the tire pressure loss warning
by the Run Fla tI ndicator Active Press
'OK 'toR estart message which appear si n
the Serv. menu of the multifunctio nd is play.
Informatio nont he message display can be
found in the "Restarting the tire pressure loss
warning system "s ectio n( Y
page 262).
Important safety notes
The tire pressure warning system does not warn
yo uofani ncorrectly set tire pressure. Observe
the notes on the recommende dt ire pressure
( Y
page 258).
The tire pressure loss warning does not replace
the nee dtor egularly check the tire pressure. An
eve nl os sofp ressure on severa lt ire satt heTire pressure 261
Wheel sa nd tires Z

same time cannot be detected by the tire pres-
sure loss warning system.
The tire pressure monitor is not able to warn you
of as udden loss of pressure, e.g. if the tire is
penetrated by af oreign object. In the event of a
sudden loss of pressure, bring the vehicle to a
halt by braking carefully .A void abrupt steering
movements.
The function of the tire pressure loss warning
system is limited or delayed if: R
snow chains are mounted on your vehicle's
tires. R
road conditions are wintry. R
you are driving on sand or gravel. R
you adopt av ery sporty driving style (corner-
ing at high speeds or driving with high rates of
acceleration). R
you drive with ah eavy load.
Restarting the tire pressure loss warn-
ing system Restart the tire pressure loss warning system if
you have: R
changed the tire pressure R
changed the wheels or tires R
mounted new wheels or tires X
Before restarting, make sure that the tire
pressures are set properly on all four tires for
the respective operating conditions.
The recommended tire pressure can be found
on the Tire and Loading Information placard
on the B-pillar. Additionally, at ire pressure
table is attached to the fuel filler flap. The tire
pressure loss warning system can only give
reliable warnings if you have set the correct
tire pressure. If an incorrect tire pressure is
set, these incorrect values will be monitored. X
Also observe the notes in the section on tire
pressures ( Y
page 258).X
Make sure that the SmartKey is in position 2
in the ignition lock ( Y
page 115).X
Press the Y or e button on the steering
wheel to select the Serv. menu.X
Press the c or d button to select
Tire Pressure .X
Press the v button.
The Run Flat Indicator Active Press
'OK' to Restart message appears in the
multifunction display. If you wish to confirm the restart: X
Press the v button.
The Tire Pressure Now OK? message
appears in the multifunction display. X
Press the c or d button to select Yes .X
Press the v button.
The Run Flat Indicator Restarted mes-
sage appears in the multifunction display.
After at each-in period, the tire pressure loss
warning system will monitor the set tire pres-
sures of all four tires.
If you wish to cancel the restart: X
Press the 8 button.
or X
If the Tire Pressure Now OK? message
appears, use the c or d button to
select Cancel . X
Press the v button.
The tire pressure values stored at the last
restart will continue to be monitored.
Tire pressure monitor
General notes If at ire pressure monitor is installed, the vehi-
cle's wheels have sensors that monitor the tire
pressures in all four tires. The tire pressure mon-
itor warns you if the pressure drops in one or
more of the tires. The tire pressure monitor only
functions if the corresponding sensors are
installed in all wheels.
Information on tire pressures is displayed in the
multifunction display. After af ew minutes of
driving, the current tire pressure of each tire is
shown in the Serv. menu of the multifunction
display.
Example: current tire pressure display
For information on the message display, refer to
the "Checking the tire pressure electronically"
section ( Y
page 264).262
Tire pressure
Wheels and tires

Important safety notes
G WARNIN G
Eac ht ir e, includin gt he spar e( if provided),
should be checke datl east once am onth
when cold and inflated to th ep ressur er ec -
ommended by th ev ehicl em anufacturer on
th eT ir ea nd Loading Information placard on
th ed river' sd oor B-pillar or th et ir ep ressur e
label on th ei nside of th ef uel filler flap .Ify our
vehicl eh as tires of ad ifferen ts iz et ha nt he
siz ei ndicated on th eT ir ea nd Loading Infor -
mation placard or th et ir ep ressur el abel, you
should determine th ep roper tire pressur ef or
those tires .
As an added safet yf eature, your vehicl eh as
been equipped wit hat ir ep ressur em onitoring
system (TPMS) that illuminate sal ow tire pres-
sur et el ltale when on eorm or eofy our tires
are significantly underinflated. Accordingly,
when th el ow tire pressur et el ltale illuminates,
you should stop and chec ky our tires as soo n
as possible ,a nd inflat et he mtot he proper
pressure. Drivin gonas ignificantly underin-
flated tire causes th et ir etoo verheat and can
lead to tire failure. Underinflation also
reduce sf uel efficiency and tire tread life ,a nd
may affec tt he vehicle's handlin ga nd stop-
pin ga bility.
Pleas en ot et ha tt he TPM Sisn ot as ubstitut e
for proper tire maintenance ,a nd it is th ed riv -
er'
sr e sponsibilit y t om aintai nc orrect tire
pressure, eve nifu nderinflation has no t
reached th el evel to trigge ri llumination of th e
TPM Sl ow tire pressur et el ltale.
Your vehicl eh as also been equipped wit ha
TPM Sm alfunction indicator to indicat eift he
system is no to perating properly. The TPM S
malfunction indicator is combined wit ht he
low tire pressur et el ltale. When th es ystem
detects am alfunction ,t he warning lamp will
flas hf or approximately am inute and then
remain continuously illuminated. This
sequenc ew ill be repeated every time th ev ehi-
cle is started as lon gast he malfunction
exists. When th em alfunction indicator is illuminated,
th es ystem may no tbea ble to detec tors ignal
low tire pressur easi ntended. TPM Sm alfunc -
tion sm ay occur for av ariet yofr easons,
includin gt he installation of incompatible
replacemen tora lternate tires or wheels on
th ev ehicl et ha tp reven tt he TPM Sf ro mf unc-
tioning properly. Always chec kt he TPM Sm al-
function telltale after replacing on eorm or e
tires or wheels on your vehicl etoe ns ur et ha t
th er eplacemen tora lternate tires and wheels
allow th eT PM Stoc ontin ue to function prop-
erly.
It is th ed river' sr esponsibilit yt os et th et ir e
pressur etot ha tr ecommended for cold tires
whic hiss uitable for th eo perating situation
( Y
page 258). Not et ha tt he correc tt ir ep ressur e
for th ec urren to perating situation must first be
taught-in to th et ir ep ressur em onitor. If there is
as ubstantial loss of pressure, th ew arning
threshold for th ew arning message is aligned to
th er eferenc ev alue st aught-in .R estart th et ir e
pressur em onitor after adjusting th ep ressur eo f
th ec ol dt ir es ( Y
page 264). The curren tp res-
sures are saved as ne wr eferenc ev alues. As a
result ,aw arning message will appear if th et ir e
pressur ed rops sign ifica ntly.
T he tire pressur em onitor does no tw arn you of
an incorrectl ys et tire pressure. Observ et he
note sont he recommended tire pressur e
( Y
page 258).
The tire pressur em onitor is no ta ble to warn you
of as udde nl oss of pressure, e.g. if th et ir ei s
penetrated by af oreign object. In th ee vent of a
sudde nl oss of pressure, brin gt he vehicl etoa
halt by braking carefully. Avoid abrup ts te ering
movements.
The tire pressur em onitor has ay ellow warning
lamp in th ei nstrumen tc luste rf or indicating
pressur el oss or am alfunction .W hether th e
warning lamp flashes or lights up indicates
whether at ir ep ressur eist oo low or th et ir e
pressur em onitor is malfunctioning :R
if th ew arning lamp is lit continuously, th et ir e
pressur eono ne or mor et ir es is significantly
to ol ow. The tire pressur em onitor is no tm al-
functioning . R
if th ew arning lamp flashes for aroun da
minute and then remain sl it constantly, th e
tire pressur em onitor is malfunctioning .Tire pressure 263
Wheels and tires Z

In addition to the warning lamp ,am essage
appears in the multifunction display. Observe
the information on display messages
( Y
page 196).
It may take up to ten minutes for am alfunction
of the tire pressure monitor to be indicated .A
malfunction wil lbei ndicated by the tire pres-
sure warning lamp flashing for approximately
one minute and then remaining lit. When the
malfunction has been rectified, the tire pressure
warning lamp goes out after af ew minutes of
driving.
The tire pressure values indicated by the on-
board computer may differ from those meas-
ured at ag as station with ap ressure gauge. The
tire pressures shown by the on-board computer
refer to those measured at sea level .Ath igh
altitudes, the tire pressure values indicated by a
pressure gauge are higher than those shown by
the on-board computer. In this case, do not
reduce the tire pressures.
The operation of the tire pressure monitor can
be affected by interference from radi ot ransmit-
ting equipment (e.g. radi oh eadphones, two-way
radios) that may be being operated in or near the
vehicle.
Checking the tire pressure electroni-
cally X
Make sure that the SmartKey is in position 2
in the ignition lock ( Y
page 115).X
Press the Y or e button on the steering
wheel to select the Serv. menu.X
Press the c or d button to select
Tire Pressure .X
Press the v button.
The current tire pressure of each tire is shown
in the multifunction display.
If the vehicle has been parked for over
20 minutes, the Tire pressure will be
displayed after driving af ew minutes
messag ea ppears.
After at each-in process, the tire pressure mon-
itor automatically detects new wheel sorn ew
sensors. As long as ac lear allocation of the tire
pressure valu etot he individual wheel sisn ot
possible, the Tire Pressure Monitor Active
display messag eiss hown instead of the tire
pressure display. The tire pressures are already
being monitored.
If an emergency spare wheel is mounted, the
system may continue to show the tire pressure of the wheel that has been removed for af ew
minutes. If this occurs, note that the valu ed is-
played for the positio nw here the spare wheel is
mounted is not the same as the current tire
pressure of the emergency spare wheel.
Tire pressure monitor warning mes-
sages If the tire pressure monitor detects ap ressure
loss in one or more tires, aw arning messag ei s
shown in the multifunction display. The yellow
tire pressure warning lamp then lights up. R
If the Please Correct Tire Pressure
messag ea ppears in the multifunction display,
the tire pressure in at least one tire is too low.
The tire pressure must be corrected when the
opportunity arises. R
If the Check Tires messag ea ppears in the
multifunction display, the tire pressure in at
least one tire has droppe ds ignificantly. The
tires must be checked. R
If the Warning Tire Malfunction message
appears in the multifunction display, the tire
pressure in at least one tire has droppe ds ud-
denly .T he tires must be checked.
Observe the instructions and safety notes in the
display messages in the "Tires" section
( Y
page 196).
If the wheel positions on the vehicle are rotated,
the tire pressures may be displaye df or the
wrong positions for as hort time. This is rectified
after af ew minutes of driving, and the tire pres-
sures are displaye df or the correct positions.
Restarting the tire pressure monitor When you restart the tire pressure monitor, all
existing warning messages are deleted and the
warning lamp sgoo ut. The monitor uses the cur-
rently set tire pressures as the reference values
for monitoring. In most cases, the tire pressure
monitor wil la utomatically detect the new refer-
ence values after you have changed the tire
pressure. However, you can also define refer-
ence values manually as describe dh ere. The tire
pressure monitor then monitors the new tire
pressure values. X
Set the tire pressure to the valu er ecommen-
ded for the corresponding driving situation on
the Tire and Loading Information placard on
the driver's side B-pilla r( Y
page 258).264
Tire pressure
Wheel sa nd tires

Additiona lt ire pressure values for different
load sc an also be found on the tire pressure
table on the insid eoft he fuel fille rf lap
( Y
page 258). X
Make sure tha tt he tire pressure is correct on
al lf ou rw heels.X
Make sure tha tt he SmartKe yisinp osition 2
in the ignition lock. X
Press the Y or e button on the steering
whee ltos elect the Serv. menu.X
Press the c or d button to select
Tir eP ressure .X
Press the v button.
The multifunctio nd is play shows the current
tire pressure for the individual tire sort he
Tir ep ressure wil lbed isplayed
after drivin gaf ew minutes message.X
Press the d button.
The Use Current Pressures as New Ref‐
erence Values message appear sint he mul-
tifunctio nd is play.
If yo uw is htoc on firm the restart:X
Press the v button.
The Tire Press. Monitor Restarted mes-
sage appear sint he multifunctio nd is play.
After driving for af ew minutes, the system
checks whethe rt he current tire pressures are
withi nt he specified range .T he new tire pres-
sures ar et hen accepte dasr eference values
and monitored.
If yo uw is htoc ance lt he restart:X
Press the 8 button.
The tire pressure values stored at the last
restart will continue to be monitored.
Radio type approval fo rt he tire pres-
sure monitor Country Radio type approval number
USA FCC ID: MRXMW2433A
FCC ID: MRXGG4
FCC ID: MRXMC34MA4
Canada IC :2 546A-MW2433A
IC :2 546A-GG4
IC :2 546A-MC34MA4 Loadin gt he vehicle
Instructio nl abel sf or tire sa nd loads
G WARNING
Overloaded tire sc an overheat, causing a
blowout. Overloaded tire sc an also impai rt he
steering and driving characteristics and lead
to brake failure. There is ar is kofa ccident.
Observ et he load rating of the tires. The load
rating must be at leas th al foft he GAW Ro f
your vehicle. Never overload the tire sb y
exceeding the maximu ml oad.
Tw oi nstructio nl abel sony ou rv ehicl es ho wt he
maximu mp os sibl el oad.
(1) The Tire and Loading Informatio np la card is
on the B-pillar on the driver's side .T he Tire
and Loading Informatio np la card shows the
maximu mp er missibl en umbe rofo ccu-
pants and the maximu mp er missibl ev ehicle
load .Ita ls oc ontains details of the tire sizes
and corresponding pressures for tires
mounted at the factory.
(2) The vehicl ei de ntificatio np la te is on the
B-pillar on the driver's side .T he vehicle
identificatio np la te informs yo uoft he gross
vehicl ew eigh tr at ing .Iti sm ad eupoft he
vehicl ew eigh t, al lv ehicl eo ccupants, the
fuel and the cargo. Yo uc an also find infor-
matio na bout the maximu mg ross axle
weight rating on the front and rea ra xle.
The maximu mg ross axl ew eigh tr at ing is
the maximu mw eigh tt ha tc an be carrie db y
one axl e( fro nt or rea ra xl e) .N ever exceed
the maximu ml oa dort he maximu mg ross
axl ew eigh tr at ing for the front or rea ra xle.
C
B-pillar, driver's sideLoadin gt he vehicle 265
Wheel sa nd tires Z

Quality grades can be found ,w here applicable,
on the tire sidewall between tread shoulde ra nd
maximum sectio nw id th.
Example: R
Treadwear grade: 200R
Tractio ng rade: AAR
Temperature grade: A
All passenge rc ar tires must conform to the stat-
utory safety requirements in additio ntot hese
grades.
i The actua lv alues for tires are vehicle-spe-
cific and may deviate from the values in the
illustration.
Treadwear The treadwea rg rad eisac omparativ er ating
based on the wea rr ate of the tire whe nt ested
unde rc ontrolled conditions on as pecified U.S.
government course. For example, at ire graded
150 would wea ro ne and one-half times as well
on the government test track as at ire graded
100.
The relative performance of tires depends upon
the actua lc onditions of their use ,h owever, and
may depart significantly from the norm du et o
variations in driving habits, service practices
and differences in road characteristics and cli-
mate.
Traction
G WARNING
The tractio ng rad ea ssigne dtot his tire is
based on straight-ahead braking traction
tests, and doe sn ot include acceleration, cor-
nering, hydroplaning ,orp ea kt ractio nc har-
acteristics.
! Avoid wheelspin. Thi sc an lea dtod amage to
the driv et rain.
The tractio ng rades –f rom highest to lowest –
are AA, A, Ba nd C. Thos eg rades represent the
tire's ability to stop on wet pavement as meas-
ure du nde rc ontrolled conditions on specified
government test surfaces of asphal ta nd con-
crete. At ire marked Cm ay have poo rt raction
performance.
The safe spee donaw et, snow covere dori cy
road is always lower than on dry road surfaces. You should pay specia la ttentio ntor oa dc ondi-
tions whe nt emperatures are around freezing
point.
Mercedes-Benz recommends am inimum tread
depth of

These tires have been specially adapted for
use with the control systems, such as ABS or
ESP ®
,a nd are marked as follows:R
MO = M ercedes-Benz OriginalR
MOE = M ercedes-Benz Original Extended
(tires featuring run-flat characteristics) R
MO1 = M ercedes-Benz Original (only cer-
tain AMG tires)
Mercedes-Benz Original Extended tires may
only be used on wheels that have been spe-
cifically approved by Mercedes-Benz.
Only use tires, wheels or accessories tested
and approved by Mercedes-Benz .C ertain
characteristics, e.g. handling, vehicle noise
emissions or fuel consumption, may other-
wise be adversely affected. In addition, when
driving with al oad, tire dimension variations
could cause the tires to come into contact
with the bodywork and axle components .T his
could result in damage to the tires or the vehi-
cle.
Mercedes-Benz accepts no liability for dam-
age resulting from the use of tires, wheels or
accessories other than those tested and
approved.
Information on tires, wheels and approved
combinations can be obtained from any quali-
fied specialist workshop.
! Retreaded tires are neither tested nor rec-
ommended by Mercedes-Benz ,s ince previ-
ous damage cannot alway sbed etected on
retreaded tires. As ar esult, Mercedes-Benz
cannot guarantee vehicle safety if retreaded
tires are mounted. Do not mount used tires if
you have no information about their previous
usage.
The recommended pressures for various oper-
ating conditions can be found: R
on the Tire and Loading Information placard
on the B-pillar on the driver's side R
in the tire pressure table in the fuel filler flap
Observe the notes on recommended tire pres-
sures under various operating conditions
( Y
page 258).
Check tire pressures regularly, and only when
the tires are cold. Comply with the maintenance
recommendations of the tire manufacturer in
the vehicle document wallet. Notes on the vehicle equipment –a lway se quip
the vehicle: R
with tires of the same size on ag iven axle (left
and right) R
with the same type of tires at ag iven time
(summer tires, winter tires, MOExtended
tires)
Exception: it is permissible to install ad iffer-
ent type or make in the event of af lat tire.
Observe t he
"MOExtended tires (tires with
run-flat characteristics" section ( Y
page 242).
Vehicles equipped with MOExtended tires are
not equipped with aT IREFIT kit at the factory. It
is therefor er ecommended that you additionally
equip your vehicle with aT IREFIT kit if you mount
tires that do not feature run-flat properties, e.g.
winter tires. AT IREFIT kit may be obtained from
aq ualified specialist workshop.
Emergency spar ew heel
Important safety notes
G WARNING
The wheel or tire size as well as the tire type of
the spare wheel or emergenc ys pare wheel
and the wheel to be replaced may differ.
Mountin gane mergenc ys pare wheel may
severely impair the driving characteristics.
There is ar isk of an accident.
To avoid hazardous situations: R
adapt your driving style accordingly and
drive carefully. R
never mount more than one spare wheel or
emergenc ys pare wheel that differs in size. R
only use as pare wheel or emergenc ys pare
wheel of ad ifferent size briefly. R
do not switch ESP ®
off.R
have as pare wheel or emergenc ys pare
wheel of ad ifferent size replaced at the
nearest qualified specialist workshop.
Observe that the wheel and tire dimensions
as well as the tire type must be correct.
When using an emergenc ys pare wheel or spare
wheel of ad ifferent size, you must not exceed
the maximum speed of 50 mph (80 km/h).Emergency spar ew heel 279
Wheels and tires Z

Snow chains mus tn ot be mounted on emer-
gency spare wheels.
General notes You can as kf or information regarding permitted
emergency spare wheel satana ut horized
Mercedes-Benz Center.
You shoul dr egularl yc heck the pressure of the
emergency spare wheel ,p ar ticularly prior to
long trips, and correct the pressure as neces-
sary ( Y
page 258). The value on the wheel is
valid.
An emergency spare wheel may also be moun-
ted against the direction of rotation. Observe
the time restriction on us easw el last he speed
limitation specified on the emergency spare
wheel.
Replace the tire sa fte rs ix years at the latest,
regardless of wear. Thi sa ls oa pplies to the
emergency spare wheel.
Whe ny ou are driving with the collapsibl es pare
wheel mounted, the tire pressure loss warning
system or the tire pressure monitor canno tf unc-
tion reliably. Only restart the tire pressure loss
warning system or tire pressure monitor when
the defectiv ew he el ha sb ee nr eplaced with a
new wheel.
Vehicles with tire pressure monitor: after
mounting an emergency spare wheel ,t he sys-
tem may stil ld is play the tire pressure of the
removed wheel for af ew minutes. The value dis-
played for the mounted emergency spare wheel
is not the same as the current tire pressure of
the emergency spare wheel.
Removin gt he emergenc ys pare wheel
Collapsibl es pare wheel unde rt he trunk
floor The collapsibl es pare wheel can be found in the
stowag ew el lu nder the trunk floor ( Y
page 218). X
Turn retaining screw D counter-clockwise
and remove it. X
Remove collapsibl es pare wheel C .
Alway so bserve the instructions and safety
notes in the "Mounting aw he el "s ection
( Y
page 275).
Stowin gt he emergenc ys pare wheel
! Only place the collapsibl es pare wheel in the
vehicl ew he nitisd ry .O therwise, moisture
may get into the vehicle.
Take the following step stos tow au se dc ollaps-
ible spare wheel .O therwise, the collapsible
spare wheel will not fit in the trunk in the inten-
ded manner. Mercedes-Benz recommend st hat
yo uh av et his work carrie do ut at aq uali fied
specialist workshop. X
Unscre wt he valve cap from the valve. X
If possible ,u nscrew the valve insert from the
valve and release the air.
Fully deflating the tire sc an take af ew
minutes. X
Screw the valve insert back into the valve. X
Screw the valve cap back on. X
Pull the protectiv es heet provided with the
spare wheel ove rt he collapsibl es pare wheel.X
Stow the collapsibl es pare wheel in the emer-
gency spare wheel well under the trunk. X
Use the retaining scre wtop ie rce the protec-
tive sheet and fasten the collapsibl es pare
wheel in place.
Inflating the collapsibl es pare wheel
! Inflate the collapsibl es pare wheel using the
tire inflation compressor before lowering the280
Emergenc ys pare wheel
Wheels and tires