radio MERCEDES-BENZ SL CLASS 2020 User Guide

stantly,
thetire pressure monitorismalfunc-
tioning.
In addition tothe warning lamp,amessage
appea rsinthe multifunction display.Observe
the information ondispla ymessages
(Y page 230).
It may take uptoten minutes foramalfunc-
tion ofthe tire pressure monitortobe indica-
ted. Amalfunction willbeindicated bythe tire
pressure warninglampflashing forapprox-
imately oneminute andthen remaining lit.
When themalfunction hasbeen rectified, the
tire pressure warninglampgoesoutafter a
few minutes ofdriving.
The tirepressure valuesindicated bythe on-
board computer maydiffer fromthose meas-
ured atagas station withapressure gage.The
tire pressures shownbythe on-board com-
puter refertothose measured atsea level. At
high altitudes, thetire pressure valuesindica-
ted byapressure gagearehigher thanthose
shown bythe on-board computer. Inthis case,
do not reduce thetire pressures.
The operation ofthe tire pressure monitorcan
be affected byinterferen cefrom radio trans-
mitting equipment (e.g.radio headphones,
two-way radios)thatmay bebeing operated in
or near thevehicle.
Checki ngthe tire pressure electroni-
cally X
Make surethattheSmartKey isin position
0048 (Ypage 126)inthe ignition lock.
X Press the0059 or0065 button onthe steer-
ing wheel toselect theServ. Serv.
menu.
X Press the0063 or0064 button toselect
Tire Pressure Tire
Pressure.
X Press 0076.
The current tirepressure ofeach tireis
shown inthe multifunction display.
If the vehicle hasbeen parked forover
20 minutes, theTire pressure willbe Tire
pressure willbe
displayed afterdriving afew minutes displayed
afterdriving afew minutes
message appears.
Aft erateach-in process, thetire pressure
monitor automatically detectsnewwheels or
new sensors. Aslong asaclear allocation of
the tire pressure valuetothe individua lwheels
is not possible ,the Tire Pressure Monitor Tire
Pressure Monitor
Active Active
displaymessage isshown instead of
the tire pressure display.The tirepressures
are alread ybeing monitored. Tire
pressure monitorwarning mes-
sages The
tirepressure monitordetectsapressure
loss inone ormore tires:
R Ifthe tire pressure monitordetectsapres-
sure lossinone ormore tires,awarning
message isshown inthe multifunction dis-
play .The yellow tire pressure warninglamp
then lights up.
R Ifthe Please Correct TirePressure Please
Correct TirePressure
message appearsinthe multifunction dis-
play ,the tire pressure inat least onetireis
too low. Thetirepressure mustbecorrect ed
when theopportunity arises.
R Ifthe Check Tires Check
Tiresmessage appearsinthe
multifunction display,the tire pressure inat
least onetirehas dropped significantly. The
tires must bechecked.
R Ifthe Warning TireMalfunction Warning
TireMalfunction mes-
sage appea rsinthe multifunction display,
the tire pressure inat least onetirehas
dropped suddenly .The tires must be
checked.
Observe theinstruct ionsandsafety notesin
the displa ymessages inthe "Tires" section
(Y page 230).
If the wheel positions onthe vehicle arerota-
ted, thetire pressures maybedispla yedfor
the wrong positions forashort time.Thisis
rectified afterafew minutes ofdriving, andthe
tire pressures aredispla yedforthe correct
positions.
Restart ingthe tire pressure monitor When
yourestart thetire pressure monitor,all
existing warning messages aredeleted andthe
warning lampsgoout. Themonitor usesthe
currently settire pressures asthe reference
values formonitoring. Inmost cases, thetire
pressure monitorwillautomaticall ydetect the
new reference valuesafteryouhave changed
the tire pressure. However, youcan also set
reference valuesmanuall yas described here.
The tirepressure monitorthenmonitors the
new tirepressure values.
X Set thetire pressure tothe value recom-
mended forthe corresponding drivingsitua-
tion onthe Tire andLoading Information
placard onthe driver's sideB-pillar
(Y page 299). 304
Tire
pressur eWheels andtires

Add
itiona ltire pressu revalues for differ ent
lo ad scan also be fou ndonthe tire pressu re
tab leon the inside of the fuel fillerfla p
(Y page 299 ).
X Ma kesure tha tthe tire pressu reiscorr ect
on allfou rwh eels.
X Ensu retha tthe Sma rtKeyis in po sitio n0048
in the igniti onlock.
X Pre ssthe 0059 or0065 button onthe stee r-
ing wheelto sel ect the Serv. Ser
v.menu .
X Pre ssthe 0063 or0064 button tosel ect
Tir ePre ssure Tir
ePre ssure.
X Pre ss0076.
The multifu nctio ndispl aysho wsthe current
tire pressu refor the individu altire sor the
Tir epre ssurewillbe displayed Tir
epre ssurewillbe displayed
aft erdrivingafew minutes aft
erdrivingafew minutesmes sage.
X Pre ssthe 0064 button.
The Use Curren tPre ssures asNew Use
Curren tPre ssures asNew
Ref erence Values Ref
erence Values message appe arsin the
mu ltifu nctio ndispl ay.
If yo uwi sh toconfi rm the restart:
X Pre ss0076.
The TirePre ss. MonitorRes tarted Tir
ePre ss. MonitorRes tarted
mes sage appe arsin the multifu nctio ndis-
pl ay .
After driving forafew minu tes,thesystem
che cks whethe rthe current tirepressu res
ar ewi thi nthe specified range .The new tire
pre ssu res arethen acceptedas refere nce
va lues and moni tored.
If yo uwi sh tocan celthe restart:
X Pre ss0038.
The tirepressu revalues stor edatthe last
res tart willconti nuetobe moni tored. Radio
typeapprov alforthe tire pres -
sure monitor Co
untry Radio
typeappro valnumb er USA FCC
ID:MRXMW 2433A
FCC ICID:MR XGG4 Thisde vice
comp lies with part15 ofthe
FCC rulesand with licens e
exe mpt RSS standa rds ofIndu s-
try Canad a.Ope ratio nis su bje ct
to the followi ng cond itions. (1)
Thi sde vice maynot cause
ha rmfu linte rference ,and (2)
Thi sde vice mustacce ptany
inte rference received,incl uding
inte rference thatma ycau se
und esired opera tion.Le pre sent
ap parei lest confo rmed'indu s-
trie Canad aap plica bles aux
ap parei lsradio exe mpts de
li cence .L'e xploitati onest
au thor isee auxde ux cond itions
su iva ntes. (1)L'appareilne doit
pa spro duire debro uillag e, et
(2) L'autisatue rde l'ap parei l
do itacce ptertou tbro uillag e
ra dioe lectriq uesubi,mem esi le
bro uillag eest susce ptible d'e n
comp romettrelefoncti onne-
ment. WARNING :Ch ang esor
mod ificati ons notexpressly
ap pro ved bythe party responsi -
bl e for comp liance couldvoi d
the user' sau thor itytoopera te
the equipme nt.The term "IC:"
be fore theradio certi fication
num beronl ysigni fiesCa nad a
tech nicalspe cificati ons were
met.
FCC ID:MR XMC34MA4 This
de vice comp lies with part15 of
the FCC rulesand with licens e
exe mpt RSS standa rds ofIndu s-
try Canad a.Ope ratio nis su bje ct
to the followi ng cond itions. (1)
Thi sde vice maynot cause
ha rmfu linte rference ,and (2)
Thi sde vice mustacce ptany
inte rference received,incl uding
inte rference thatma ycau se
und esired opera tion.Le pre sent
ap parei lest confo rmed'indu s-
trie Canad aap plica bles aux
ap parei lsradio exe mpts de Tire
pres sure
305Whe elsand tires Z

Count
ry Ra
dio type approval number lice
nce. L'ex ploit ationest
auth oriseeaux deux condition s
suivan tes.(1) L'app areilnedoit
pas prod uiredebrouil lage,et
(2) L'aut isatuer del'appar eil
doit acceptertout brouil lage
radioe lectrique subi,memesi le
brouil lageestsusc eptible d'en
com prom ettrelefon ction ne-
men t.WARN ING:Chang esor
modi ficatio nsnot expressly
appro vedbythepart yres pon si-
ble forcom plian cecould void
th euser' sauth orityto oper ate
th eequipm ent.The term"IC: "
befo retheradio certificat ion
num beronlysign ifies Canada
tec hnical spec ificatio nswere
met . Canada IC:
2546A-MW2 433A
IC: 2546A-GG4 Thisdevic ecom -
plies withpart15oftheFCC
rules andwith licenseexe mpt
RSS standar dsofIndust ryCan-
ada. Oper ationis subj ecttothe
follo wing condition s.(1) This
devic emay notcause harmful
int erf eren ce,and (2)This devic e
must accept any interf eren ce
rec eived ,inc ludin gint erf eren ce
th at may cause undesiredoper -
atio n.Le pres entappare ilest
con forme d'indust rieCanada
applic ablesauxappare ilsradio
exe mpt sde lice nce. L'ex ploit a-
tio nest auth oriseeaux deux
con dition ssuivan tes.(1) L'ap-
pareil nedoit pasprod uirede
brouil lage,et(2) L'aut isatuer de
l'appar eildoit acceptertout
brouil lageradioe lectrique subi,
mem esi le brouil lageestsus-
cep tibled'en comprom ettrele
fon ction nem ent.WARN ING:
Chang esormodi ficatio nsnot
exp ressly appro vedbythepart y
res pon sible forcom plian ce
could voidtheuser' sauth ority
to oper atetheequipm ent.The
ter m"IC: "befo retheradio cer-
tif icat ion num beronlysign ifies
Canada technical spec ificatio ns
were met. Count
ry Ra
dio type approval number IC:
2546A-MC34 MA4 Load
ingthevehicle Inst
ruction labels fortires and loads G
WAR
NING
Ove rloade dtir es can over heat ,causi nga
blowout .Ove rloade dtir es can also impair
th est eerin gand drivingchar acteris ticsand
lead tobrak efailur e.Ther eis arisk ofacc i-
den t.
Obse rvetheload rating ofthetir es. The load
rat ing must beatleast halfoftheGAWR of
your vehicle.Nev erover load thetir es by
exc eedin gth emax imum load.
Two instruct ion labels onyour vehicle show
th emax imum possibleload.
(1) TheTire andLoadin gIn for mat ionplacar d
is on theB- pillar onthedriv er'sside. The
Tire andLoadin gIn for mat ionplacar d
shows themax imum permissiblenum ber
of occ upant sand themax imum permissi-
ble vehicle load. Italso contain sdet ails of
th etir esiz es and correspon ding pressures
for tires moun tedatthefac tory.
(2) Thevehicle iden tificat ion plat eis on the
B- pillar onthedriv er'sside. Thevehicle
iden tificat ion plat einf orm syou ofthe
gro ssveh icle weight rating .It is made up
of theveh icle weight ,all veh icle occu-
pant s,thefuel andthecar go. You canalso
fin dinf orm ationabout themax imum gross
axle weight rating onthefro ntand rear
axle.
The maximum grossaxle weight rating is
th emax imum weight that can becar ried
by one axle (front orrear axle) .Nev er
exc eed themax imum loadorthemax i-
mum grossaxle weight rating forthefro nt
or rear axle. 306
Load
ingthevehicleWh eels andtires

Infor
mation reg ardin gtech nicalda ta
i The
datast ate dher espec ifically refers to
a veh iclewit hstand ard equipm ent.Con sult
an auth orizedMer cedes- BenzCen terfor the
dat afor allveh iclevar iantsand trim levels. Veh
icle elect ronics Ta
mp ering with theengin eelect ron-
ics
! Hav
eth een gin eelec tron ics and asso ci-
ate dpart s,suc has control unit s,sen sors,
act uati ngcompo nentsor elec tric cab les
ser viced onlyat aqualif iedspec ialist work-
sho p.Veh icleco mpo nentsmay other wise
wear morequic klyand theveh icle's oper at-
ing permit may beinvalidat ed. Inst
alling two- way radio sand mob ile
ph ones (RFtrans mitters ) G
WAR
NING
The electromag netic radi ation from two-way
radi oscan interf ere withth eveh icleelec -
tr on ics iftwo -way radiosare man ipulat edor
ret rofitte dinc orrectly. This could jeopar dize
th eoper ating safetyof theveh icle. Ther eis
a ris kof an acc iden t.
You should haveall wor kon elec trical and
elec tron icco mpo nentscar ried outata
qualif iedspec ialist workshop. G
WAR
NING
If you incorrectly oper atetwo-way radiosin
th eveh icle, theelec tromag netic radi ation
may interf ere withth eveh icleelec tron ics ,
for exampl eif:
R thetwo -way radiois no tco nn ectedto an
ex terio rant enna
R theex terio rant enna isno tco rrec tly
moun tedor isno tlow- reflec tion
This could jeopar dizeth eoper ating safetyof
th eveh icle. Ther eis aris kof an acc iden t. Hav
eth elow- reflec tion exterio rant enna
ins talled ataqualif iedspec ialist workshop.
Alw ays conn ecttwo -way radiostothelow-
ref lec tion exterio rant enna when operating
in theveh icle.
! The
oper ating per mit may beinvalidat edif
th eins truct ionsfor installation and useof
two -way radiosare notobs erved.
In part icular,thefol lowin greq uire men ts
must becompli edwith:
R on lyappr ovedwave bandsmay beused
R obs erveth emax imum permis sible output
in these wave bands
R on lyappr ovedant enna pos ition smay be
used
Ex ce ssiv elev els ofelec tromag netic radi ation
may causedamag eto your healthand the
healt hof other s.Usi nganexterio rant enna
tak esintoacc oun tcur ren tsc ien tific disc us-
sion srel ating tothepos sible healthhaz ards
th at may result from elec tromag netic fie lds.
The followin gant enna pos ition smay beused if
RF trans mitters hav ebeen properlyins talled: Ap
pro ved antenna pos ition s
0043 Rear fender s
i On
therear fender s,itis rec omm ended to
ins tallth eant enna on theside oftheveh icle
clo ses tto thece nter oftheroad .
Use theTec hnical Specific ation ISO/ TS 21609
when retrofitti ng RF trans mitters (Road Vehi-
cle s-EM Cguide lines for installation ofaft er-
mar ketradi ofrequen cytrans mitting equip-
men t).Obs erveth elegal require men tsfor
acc essory part s.
If your vehiclehas installation sfor two -way
radi oequipm ent,use thepower supplyor
ant enna conn ection sint ended foruse withth e 322
Veh
icle electr onicsTechnical data

basic
wiring. Besure toobserve themanufac -
turer' sSupplemen twhen installing.
Deviat ionswith respect tofrequen cybands,
maximum transmission outputsoranten na
position smust beapproved byMercedes -
Ben z.
The maximum transmission output(PEAK)at
the base ofthe anten namust notexceed the
following values: Frequ
encyband Maxim
um
tr ansm ission
outp ut Shor
twave
3 -54 MHz 100
W 4
m waveband
74 -88 MHz 30
W 2
m waveband
144 -174 MHz 50
W Trunk
edradio system/
Tetra
380 -460 MHz 10
W 70
cm waveband
400 -460 MHz 35
W Mobile
communications
(2G/3G/ 4G) 10
W The
following canbeused inthe vehicle with-
out restrictions:
R RF tran smitt erswith amaximum transmis-
sion output ofup to100 mW
R RF tran smitt erswith transmitt erfrequen cies
in the 380 -410 MHz waveband andamaxi-
mum transmission outputofup to2W
(trun kedradio/Tet ra)
R Mobile phones (2G/3G/ 4G)
There isno rest riction foranten naposition son
the outside ofthe vehicle forthe following fre-
quency bands:
R Trunk edradio system/ Tetra
R 70 cm waveband
R 2G/3G/ 4G Identificat
ionplat es Vehicle
identification platewith
vehicle identification number(VIN) X
Open thedriver' sdoor.
You willsee vehicle identification plate0043. Ex
ample: vehicle identification plate(USA only)
0043 VIN
0044 Vehicle model Ex
ample: vehicle identification plate(Canada
only)
0043 VIN
0044 Paint code
i The
data shown onthe vehicle identifica-
tion plate isused onlyasan example. This Identificat
ionplat es
323Technical data Z