rest MERCEDES-BENZ C CLASS 2021 Workshop Manual

%
Ifth ebatt eryis se verely disc ha rged ,th e
function forde tecting acoll ision on apa rked
ve hicle isaut omaticall ydeactiv ated tofacil i‐
ta te thene xt engine star t.
Sy stem limit s
De tection maybe restrict ed inthefo llo wing sit‐
uation s:
R The vehicle isdamag edwithout impact, e.g.
if an outside mirroris torn offor thepaint is
damag edbyaSm artK ey
R Animpa ct occu rsat low spee d
R The electric par kingbr ak eis no tapplied No
teson par king theve hicl efo ran extended
per iod If
yo ulea vetheve hicle parkedfo rlong erthan six
we eks,itma ysuf ferdama gethro ugh disus e.
The 12Vbatt eryma yalso beimpair edordam‐
ag ed byhea vydisc harging.
% Further information canbeobt ained ata
qu alif ied spec ialistwo rkshop. St
andb ymode (ext ens ion ofthe star terbat‐
te ry 's per iod out ofuse) St
andb ymode function
% This function isno tav ailable forall model s.
If standb ymode isact ivat ed, energyloss willbe
min imiz eddur ing ex tende dpe riods ofnon- oper‐
ation.
St andb ymode isch aract erize dby thefo llo wing:
R The star terbatt eryis preser ved.
R The maximum non-opera tionaltime appear s
in themedia display.
R The conn ection toonline services isint erru p‐
te d.
R The ATA(anti-t heftal ar m system) isuna vaila‐
ble.
R The interior motion sensor and tow- aw ay
alar mfun ction sar eno tav ailable.
R The function forde tecting collisions ona
pa rked vehicle isno tav ailable. If
th efo llo wing condition sar efulf illed, standb y
mode canbeact ivat ed ordeac tivated usin gth e
multime diasystem:
R The engine isswitc hedoff.
R The ignition isswitc hedon.
Ex ceeding theve hicle's displayednon -oper a‐
tion altime maycause inconvenience, i.e.it can‐
no tbe guarant eedth at thest ar terbatt erywil l
re liably star tth eengine.
The star terbatt erymus tbe charge dfirs tin the
fo llo wing situat ions:
R The vehicle's non-oper ational timemustbe
ex tende d.
R The Batte ryCh arg eInsu fficie ntfor Stand by
Mod emes sage appear sin themedia display.
% Standb ymode isaut omat icallydeac tivated
when theignition isswitc hedon.
Ac tiv atin g/deac tivatin gst andb ymode
Mul timedi asy stem:
4 Vehicle 5
î Vehicle Setting s
5 Standby Mode
% This function isno tav ailable forall model s. Dr
iving andparking 15
7

when
theengine isre-sta rted. The lastselect ed
sensit ivityleve lre mains stor ed.
Sy stem limit s
AT TENTION ASSISTis activ ein the37 mph
(60 km/ h)to 124mp h(2 00 km/h) speedra ng e.
Pa rticular lyin thefo llo wing situat ions,AT TEN‐
TION ASSISTonl yfunct ionsinare strict ed man‐
ner and warnings maybe dela yedor notocc ur:
R Ifyo uha ve been driving forless than appr ox‐
imat ely30 min utes.
R Ifth ero ad con dition ispoor (unevenro ad
sur face orpotholes).
R Ifth er eis ast ro ng side wind.
R Ifyo uadop ta spor tydrivin gst yle (high cor‐
ner ing speeds orhigh ratesof acceler ation).
R Ifth eSt eer ing Assis tfunc tion ofActiveDis ‐
ta nce AssistDIS TRONI Cis acti ve.
R Ifth etime hasbeen setincor rectly .
R Ifyo uch ang elane sand vary your spee dfre‐
qu ent lyIn activ edr iving situations. The
ATTENTION ASSISTdr ow siness oraler tness
assessment isrese tand restar tedwhen continu‐
ing thejour neyin thefo llo wing situat ions:
R Ifyo uswit choffth eengine.
R Ifyo uunf astenyo ur seat beltandopen the
dr iver's door (e.g.tochang edr iver sor take a
br eak).
Se tting ATTENTI ONASSIST
Multimedia system:
4 Vehicle 5
k Assist ance
5 ATTE NTION ASSIS T
Se tting options #
Select Standard, SensitiveorOff.
Sugg esting are st area #
Select SuggestRes tArea. #
Activate0073 ordeacti vate thefunc tion 0053.
If AT TENTION ASSISTde tects fatig ue or
incr easing lack ofatt ention ,it sugg ests a
re st area inthevicinit y. #
Selec ta sugg estedre st area: youar egui‐
ded totheselect edrest area. Spe
edcont rolcr uise contr ol Fu
nction ofcruise contr ol
Cr uise controlre gulat esthespeed totheva lue
selec tedby thedr iver .
If yo uacc elerat eto ove rtak e, forex am ple, the
st or ed speed isno tdele ted. Ifyo ure mo veyour
fo ot from theacceler ator pedal afte rove rtakin g,
cr uise control will resume speed regulation back
to thestor ed speed.
Yo ucan stor ean yspeed above15 mp h
(20 km/ h)up tothemaximum designspeed.
Obser vetheno teson driving systems andyour
re sponsibili ty;yo uma yot her wise failto recog‐
nize dangers(/ page 158).
Me rcedes‑ AMGvehicl es:Cruis econtr olis
av ailable uptoamax imum speedof 155mp h
(250 km/h).
Displa yson themu ltifunct iondisp lay
R h (gray):cr uise control isselect edbut
no tye tacti vated.
R h (green): cruise control isactiv e. Dr
iving andparking16
5

The
driven speed isadjus tedwhen theve hicle is
le ve lwit hth etraf fic sig nat thelat est.In the
case ofsig ns indi cati ngentr yint oan urb anarea ,
th espeed isadap tedaccor dingtothespeed
per mitt edwithin theurban area. The speed limit
displa yin theIns trument Displayis alw aysupda ‐
te dwhen theve hicle isleve lwit hth etra ffic sign .
If th er eis no speed restriction onanunlimited
st re tchof road (e.g.on afree wa y), there com‐
mend edspe edisau tomatical lyadop tedas the
st or ed speed. Thesystem uses thespeed stor ed
on anunlimit edstre tchof road asthere com‐
mend edspe ed. Ifyo udo notalt er thestor ed
speed onanunlimit edstre tchof road, there c‐
omme ndedspeedis80 mph(1 30 km/h) .
If Ac tiveDis tance AssistDIS TRONI Cha sbe en
pu tint opa ssi ve mode bypressing theacceler a‐
to rpeda l,onl yspee dlimi tswhi charehigh er
th an these tspeed areadop ted.
Obser vetheno teson driving systems andyour
re sponsibili ty;yo uma yot her wise failto recog‐
nize dangers(/ page 158). Sy
stem limit s
The system limits ofTraf fic Sign Assistappl yto
th ede tection oftraf fic sig ns .
Spee dlimits below 12mp h(20 km/h) areno t
aut omaticall yadop tedby thesy stem asthe
st or ed speed. Temp oraryspeed restrictions (e.g.
fo ra cer tain tim eor due towe ather condition s)
can notbe proper lyde tected bythesy stem. The
maximum permissible speedapplying toave hi‐
cle withatrailer isno tde tected bythesy stem.
Ad jus tth espeed inthese situation s. &
WARNIN GRisk ofacci dent dueto Active
Spe edLimi tAssi stadap tingth eve hicle's
speed
The speed adoptedby ActiveSpe edLimi t
Assi stma ybe toohigh orincor rect insome
indi vidualcase s,su ch as:
R atspee dlimit sbelo w12 mp h(20 km/h)
R inwe tcond itions orinfog
R when towing atrailer #
Ensur eth at thedr iven speed complies
wit htraf fic re gulations. #
Adjus tth edr iving speed tosuit current
tr af fic and weather condition s. Fu
nction ofrout e-base dspee dadap tation
When ActiveDis tance AssistDIS TRONI Cis acti ‐
va ted, theve hicle speed willbeadap tedaccor d‐
ing lyto thero uteev ent sahead. Dependingon
th edr ive pr og ram sele cted, theve hicle negoti‐
at es aro uteeve ntaheadin an eco nomi cal,com‐
fo rtable ordynam icman ner.When thero ute
eve nthasbe en passe d,theve hicle acceler ates
ag ain tothestor ed speed. Thesetdis tance to
th eve hicle infront, vehicles detected aheadand
spe edrestrictions aheadar eta ke nint oacco unt.
Yo ucan activat eand deac tivatero ute-based
spee dadap tatio nin themultimedia system
(/ page17 3).
Th efo llo wing routeeve nts areta ke nint o
acco unt:
R Curves
R T-int ersect ions,ro und about sand tollplazas
R Turnsand exits 17
2
Driving and parking

%
Have thedispla yre pair edorreplaced if,for
ex am ple, pixelerro rs consi derablyrestrict its
us e. 360
°came ra Fu
nction ofthesur round viewcamer a
The surround viewcam erais asy stem that con ‐
sis tsof four cam eras. The cam eras coverth e
immed iateve hicle surround ings.The system
assis tsyouwhen youar epar kingor atexits with
re duced visibility ,fo rex am ple.
The views ofthesur round viewcam eraar e
alw aysav ailable whendrivin gfo rw ards up toa
speed ofappr ox.10 mph(1 6 km/h) andwhen
bac king up.
The surround viewcam erais on lyan aid. Itis no t
a subs titutefo ryo ur att entio nto thesur round‐
ing s.The responsibili tyforsaf emaneu vering and
pa rking remains withyo u. Mak esur eth at ther e
ar eno per sons, animals orobjec tsetc., inthe
maneu vering area while ma neu vering and park‐
ing. The
system evaluat esimag esfrom thefo llo wing
cameras:
R Rear vie wcam era
R Front camer a
R Twoside camer asintheoutside mirrors
Vi ew sof thesur round viewcamer a
Yo ucan selectfrom differe nt vie ws: 1
Wide-ang levie w, front
2 Topvie wwit himag efrom thefront camer a
3 Topvie wwit himag esfrom theside camer as
in theoutside mirrors
4 Wide-ang levie w, rear 5
Topvie wwit himag efrom there ar vie wcam ‐
er a
6 Topvie wwit htrailer view(vehicles witha
tra iler hitch)
To pvie w 1
Lane indicati ngthero uteth eve hicle will
ta ke atthecur rent steer ing wheel angle
2 Yello wwa rning displa yof Parking Assist
PA RK TRONI C:obs tacles atadis tance of
ap prox imat ely3. 3ft (1.0 m) orless
3 Your vehicle from above
If th edis tance totheobjec tlessens, thecolor of
wa rning displa y2 chang es.From adis tance of Dr
iving and parking 19
3

Sy
stem limit s
The surround viewcam erawill notfun ction or
will onlypa rtiall yfunc tion inthefo llo wing situa‐
tion s:
R The door sar eopen .
R The side mirrors arefo lded in.
R The trunk lidisopen .
R Ther eis hea vyrain, sno wor fog.
R The ambient lightcondit ionsarepoor ,e.g. at
night.
R Camer as,orvehicle component sin whic h
th ecamer asareins talled, aredamag ed,dirty
or covered. Obser vetheinf ormation onvehi‐
cle sensor sand camer as(/ page15 8).
Do notus eth esur round viewcam eraunde r
suc hcir cum stanc es.Youco uld other wise injure
ot her sor collide withobject swhen parking or
maneuv ering theve hicle. On
vehicles withheight-adjus table suspension or
if th eve hicle iscar rying ahea vyload, leavingth e
st andar dheigh tcan result ininaccur aciesinthe
guide linesandinthedispla yof thege ner ated
ima ges,depending ontech nica lcond itions.
% The contr astof thedispla yma ybe impair ed
by abr upt,dir ect sunlight orby other light
sour ces, e.g.when driving outofaga rage .In
th is case, paypar ticular attent ion.
% Have thedispla yre pair edorreplaced if,for
ex am ple, pixelerro rs consi derablyrestrict its
us e.
See theno teson cleaning thesur round view
cam era(/ page31 1).
Se lec tingaview forthe 360° Camer a
Re quirement s:
R The Auto.Rear View Cam. function isselec‐
te din themultimedia system. #
Engage reve rsege ar. #
Inthemultimedia system, select thedesir ed
vie w. Opening
thecam eraco verof the rear vie w
camer a
Mul timedi asy stem:
4 Vehicle 5
k Assist ance
5 Camera &Parkin g #
Select OpenCamera Cover.
% The camer aco vercloses automatical lyafte r
some timeorafte ran ignitio ncy cle.
Se tting thecam eraas afa vo rite
Yo ucan callupthecamer avie wdir ect lyin the
multime diasystem bysettin git as afa vo rite . #
Press the00E2 buttononthecon trol ele‐
ment .
The main functionsar edispla yed. #
Navig atedo wn wardstwice.
The Favorite smenu appears. #
Select New Favorite. #
Select Veh icle. #
Select Camera. Dr
iving and parking 19
5

obs
tacle and ther eis arisk ofalat eral collision,
a wa rning isissued andthesegment slight upin
color inthedispla y.
The segment colorchang esdepen dingon the
dis tance tothede tected obs tacle :
R Yello w: appr oximat ely1. 0 -2.0 ft
(30 -60 cm)
R Red:less than appr oximat ely1. 0 ft (30 cm)
In order forlat eral front orrear segm entsto be
displa yed, theve hicle mustfirs ttr ave la dis tance
of at leas tha lfof theve hicle length.Once the
ve hicle hastrave led thelengt hof theve hicle, all
of thelat eral front and rear segm entscan bedis‐
pla yed. Pa
rking AssistPA RK TRONI Cdisp lay: vehicles
wit hout asur round viewcam era
1 Operation alfron tand rear
2 Operation alfron t,re ar and sides
3 Obstacle detected atthefront right (yello w)
and rear (red) Pa
rking AssistPA RK TRONI Cdisp lay: vehicles
wit hasur round viewcam era
1 Operation alfron tand rear
2 Operation alfron t,re ar and sides
3 Obstacle sde tected atthefront right (red)
Sa vedobs tacle son thesides aredele tedin the
fo llo wing situat ions,fo rex am ple:
R Youpar kth eve hicle andswitc hof fth eigni‐
tion .
R Youopen thedoor s.
Af terth eengine isrestar ted, obs tacle son the
sides mustbe detected again bef oreane w
wa rning can beissued. 19
8
Driving and parking

No
teson theins trum ent disp layand on-
boar dcom puter &
WARNIN GRisk ofacci dent dueto an
In stru ment Displa ymalfu nction
If th eIns trument Displayhas failed ormal‐
func tioned,thefunc tion restrictions applying
to saf etyre leva nt systems areno tvisible.
The oper ating safetyof your vehicle maybe
im pair ed. #
Drive on car efull y. #
Have theve hicle checkedimmediat ely
at aqu alif ied spec ialistwo rkshop. &
WARNIN GRisk ofdist ra ction from infor‐
mati onsystems andcomm unication s
eq uipment
If yo uoper ateinf ormat ionand comm unic a‐
tio neq uipme ntintegratedin theve hicle
when driving, youwill bedistract ed from the
tr af fic situ ation. Thiscou ldalso cau seyouto
lose control of theve hicle. #
Onlyoper ateth is eq uipmen twhen the
tr af fic situ ation per mits. #
Ifyo ucan notbe sur eof this, stop the
ve hicle whilstpa ying attention toroad
and traffic condi tions andoperate the
eq uipment withth eve hicle statio nary. *
NO
TEMercede s-AMG vehicles #
Obser vetheno tesin theSupplement .
Yo uco uld other wise failto recogni ze
da ngers. Yo
umus tobse rveth eleg alrequ iremen tsforth e
cou ntryin whi chyouar ecur rentl ydr ivi ng when
op erati ng theon- boar dcom puter.
The on-boar dcom putersho wsonlydispla ymes‐
sag esand warnings from spec ific systems on
th emultifunc tiondispla y.Yo umus tth er efor e
ensur eth at your vehicle isalw aysre liable.
If th eoper ating safetyof your vehicle is
im pair ed,parkth eve hicle immediat elyand
saf ely. Con tact aqu alif ied spec ialistwo rkshop. 206
Instrument Displayand on-boar dcom puter

#
Navig atedo wn wardsonce. #
Select afa vo rite . #
Navig atedo wn wardsonce.
The Favorite smenu appears. #
Todel ete: selec tDele te. #
Sele ctYes. #
Toresto reall favo rite s: select ResetAll.
A pr om ptappear s. #
Select Yes.
The favo rite sar ere se tto thefa ct or yse t‐
tings . Sw
itchin gthe sound on/o ff On
themultifunc tionsteer ing wheel On
themultimedia system #
Tomut e:pres svo lume control 1.
The 0063 symbol appearsin thest atus line
of thedispla y.
Yo uwill also hear traffic annou ncements and
na vig ation annou ncements even when the
sound ismut ed. 21
8
Multimedia system

Depe
nding onthesour ce,youcan perform
va rious updates: Sour
ceofthe
updat e Up
dat etype
Up dat esvia mobile
phone Sy
stem updat es,Digi‐
ta lOpera tor's Manua l
Up dat esvia anexter‐
nal stor ag emedium,
e.g. anSD card Na
vig ation maps %
Softwareupd ates via mobil ephone requ ire
an act ive Int erne tcon nection forth eve hicle.
This isno tav ailable inall coun tries. Forfur‐
th er information oncon nect ingtotheInt er‐
ne t,see (/page27 9).
Ad vantag esofsof twareupd ates
Sof twareupdat esensur eyo ur vehicle's tech nol ‐
ogy isup -to-d ate.
In orde rto cons tantl yimpr ovethequ alit yof our
ser vices youwill recei vefutur esof twareupd ates
fo ryo ur mult imed iasystem, theMer cedes me
con nect services andyour vehicle's communica‐
tion module. Thesewillbesent toyouvia the mobil
ephone connection inyour vehicle and,as
an option, installed automat ically.Yo ucan mon i‐
to rth est atus ofyour sof twareupdat eson the
Mer cedes mePortal and find informa tionab ou t
po tentia linno vatio ns.
Yo ur adv antages ataglanc e:
R Con venie ntly recei vesof twareupda tesvia
th emobile phonenetwork
R Improve sth equ alit yand availabilit yof
Mer cedesme connectser vices
R Keeps your mult imed iasystem and comm uni‐
cation module up-to-dat e
Fu rther information aboutsoftwareupdat escan
be found athttp s:// me. secure.m erced es-
ben z.co m
Car rying out softwareupd ates
Re quirement s:
R Ther eis an Interne tcon nection
(/ page27 9).
R Foraut omat icso ftwa reupdat es:your
ve hicle hasaper manent lyins talled com mu‐
nic ation module. Multim
ediasystem:
4 System 5
Soft ware Update
Au tomatic softwa reupdat es #
Activate0073 Auto matic Onl ine Update.
Th esof twareup dateswill bedownloaded
and installed automat ically.
The current status ofthesof twareupdat eis
displa yed.
Manu alsof twareupd ates #
Switc hof f0053 Auto matic OnlineUpdate. #
Select asof twareupdat efrom thelis tand
st ar tth eupdat e.
Ac tiv atin gaso ftwa reupdat e #
Restar tth esy stem.
Fu nction ofimpor tant system updates
Im por tant system updat esma ybe neces saryfo r
th esecur ityofyour mult imed iasystem's data.
Please installth ese updat es,other wise the
secur ityofyour mult imed iasystem cann otbe
ensur ed. Multimedia
system 229

%
Ifaut omatic onlineupdatesar eactiv ated,
th esy stem updat eswill bedownloaded auto‐
maticall y(/ page229).
As soon asasy stem updat eis available for
do wnload, acor responding messageappea rson
th emedia display.
Yo uha ve thefo llo wing selectionoption s:
R Down load
The system updat ewill bedownloaded inthe
bac kground .
R Detail s
In fo rm atio nabout thepending system
updat eis displa yed.
R Later
The system updat ecan bedownloaded man‐
uall yat alat er time (/page229).
Yo uwill beinformed when thedo wnload iscom‐
ple teand thesy stem updat eis ready forins talla‐
tion .
% Park theve hicle safely inasuit able location
bef orest ar tin gth eins tallation . Re
quiremen tsforth eins tallation :
R The ignit ionisswitc hedon.
R The engin eis no tru nning .
R Notesand warnings have been read and
acc epted.
R The parkingbr ak eis applied.
If all requ iremen tsareme t,th esy stem updat eis
ins talled. Themultim ediasystem cann otbe
oper ated dur ing theins tallation andvehicle func‐
tions arere strict ed.
If er ro rs should occurduring theins tallation ,th e
multime diasystem automaticall yatt em ptsto
re stor eth epr ev ious version. Ifre stor ation ofthe
pr ev ious version isno tpossible ,a symbol
appear son themultimedia system displa y.Con ‐
sult aqu alif ied spec ialistwo rkshop toresol ve
th epr oblem. Re
setfunction Multimedia
system:
4 System 5
Reset
Pe rsonal datais dele ted, forex am ple:
R Statio npr ese ts
R Con nectedmobile phones #
Select Yes.
If PIN protect ion isactiv ated, apr om ptappear s
ask ing ifyo ualso wish torestor eth is to thefa c‐
to ry settin gsdur ing are se t. #
Select Yes. #
Enterthecur rent PIN .
The PINisrese t.
or #
Select No.
The current PIN stay sth esame afte rre se t‐
ting.
% Ifyo uha ve forg ottenyo ur PIN ,an aut hor ized
Mer cedes-Ben zCen tercan deactivateth e
PIN protect ion foryo u. 230
Multimed iasystem