warning MERCEDES-BENZ CLA 2021 Owners Manual

Wa
rning/indicat orlam p
Possible causes/conseq uencesand0050 0050
Solutions
0027 Br ak ewa rning lam p(US A
onl y)
004D Br ak esy stem warning lam p
(Canada only) *T
he redbr ak esy stem warning lam pis lit while theengine isrunning .
Po ssible causes:
R The brak efo rc eboos tingismalfunct ioningandthebr aking charact eristic sma ybe affect ed.
R The reisinsuf ficie ntbrak efluid inthebr ak efluid reser voir. #
Notethemessag eson themultifunc tiondispla y. &
WA RNIN GRisk ofacci dent andinjuryifbr ak efo rc eboos tingismalfunct ioning
If br ak efo rc eboos tingismalfunct ioning,increased brak epedal forc ema ybe neces saryfo rbr aking. Thebraking
ch aract eristic sma ybe impair ed.The brakin gdis tance canincrease ineme rgency braki ng situa tions. #
Stop inasaf elocation immediat ely.Do notcont inue driving. #
Consult aqu alif ied spec ialistwo rkshop. &
WA RNIN GRisk ofan acci dent dueto low brak efluid leve l
If th ebr ak efluid leve lis toolow, thebr aking effect and thebr aking charact eristic sma ybe impair ed. #
Pull overand stop theve hicle safely assoon aspossible, paying attention toroad and traf fic condi tions.Do
no tcontinu edr ivi ng und eranycir cums tances. #
Consu ltaqu alif ied spec ialistwo rkshop. #
Donotadd brak efluid. 390
Displaymes sagesand warning/ indic ator lam ps

Dr
ivin gsy stems Wa
rning/indicat orlam p
Possible causes/conseq uencesand0050 0050
Solutions
00D4 Ac tiveBr ak eAssi stwa rning
lam p *T
he whit eAc tiveBr ak eAssi stwa rning lam pis lit.
The system isswitc hedoffor una vailable.
L Wa rning lam pfo rdis tance
wa rning func tion *T
he reddis tance warning lam plight sup while theve hicle isin mo tion.
The distance totheve hicle infront istoosmall forth espeed selected.
If th er eis an additional warning tone, youar eappr oachingan obs tacle attoohigh aspeed. #
Beprepar edtobrak eimmediat ely. #
Incr ease thedis tance.
Fu nctio nof ActiveBr ak eAssi st(/ pag e17 5). Displ
aymessa gesand warning/ indic ator lam ps 39
1

Dr
ivin gsaf etysy stems Wa
rning/indicat orlam p
Possible causes/conseq uencesand0050 0050
Solutions
0025 ABS warning lam p *T
he yello wAB Swa rning lam pis lit while theengine isrunning .
ABS isma lfunctio ning.
If th er eis an additional warning tone, EBD isma lfunctio ning.
Ot her drivi ng systems anddriving safetysy stems mayalso bemalfunct ioning. #
Notethemessag eson themultifunc tiondispla y. &
WA RNIN GThe reisarisk ofskidding ifEBD orABS ismalfunctioning
The wheels mayloc kdur ing braking.
The steer ability andbraking charact eristic sar ehea vilyim pair edand thebr aking distan cema yincr ease. Inaddi‐
tion, other driving safetysy stems areswitc hedoff. #
Drive on car efull y. #
Have thebr ak esy stem checkedimmediat elyat aqu alif ied spec ialistwo rkshop. 00E5
ESP ®
wa rning lam pflashes *
The yello wES P®
wa rning lam pflashes whiletheve hicle isin mo tion.
One ormor ewheels hasreac hed itsgrip limit (/page15 6). #
Adaptyo ur drivin gst yle to suit thero ad and weather condition s. 392
Displaymes sagesand warning/ indic ator lam ps

Wa
rning/indicat orlam p
Possible causes/conseq uencesand0050 0050
Solutions
00E5 ESP ®
wa rning lam plight s
up *
The yello wES P®
wa rning lam pis lit while theengine isrunning .
ESP ®
is mal func tioning .
Ot her drivi ng systems anddriving safetysy stems (e.g. BAS)ma yal so be mal functi oning. #
Notethemessag eson themultifunc tiondispla y. &
WA RNIN GRisk ofskid ding ifESP ®
is mal functi oning
If ESP ®
is mal functi oning,ESP ®
canno tcar ryout vehicle stabiliz ation.Inaddit ion,ot her driving safetysy stems
ar eswitc hedoff. #
Drive on car efull y. #
Have ESP ®
ch eckedat aqu alif ied spec ialistwo rkshop. 00BB
ESP ®
OFF warning lam p *
The yello wES P®
OFF warning lam pis lit while theengine isrunning .
ESP ®
is de acti vated.
Ot her driving systems anddriving safetysy stems mayalso beinoper ative. &
WA RNIN GRisk ofskid ding whe ndr ivi ng with ESP ®
de acti vated
ESP ®
do es notact tostabiliz eth eve hicle. Theavailabilit yof fur ther driving safetysy stems isalso limited. #
Drive on car efull y. #
Dea ctivateESP ®
only foras long asthesituation requ ires. Disp
lay mess ages and warning/ indic ator lam ps 393

Wa
rning/indicat orlam p
Possible causes/conseq uencesand0050 0050
Solutions
If ESP ®
cann otbe activ ated, ESP®
is malfunc tioning. #
Have ESP ®
ch eckedimmediat elyat aqu alif ied spec ialistwo rkshop. #
Obser vetheno teson deactiv atingESP®
(/ page15 6). Ti
re pres sur emoni tor Wa
rning/indicat orlam p
Possible causes/conseq uencesand0050 0050
Solutions
0077 Ti re pressur emonit oring
sy stem warning lam p
fl ashes *The
yello wtirepr essur emon itor wa rning lam p(pr essur eloss/ malfun ction) flashes forapp roxima tely one minu te and
th en remains lit.
The tirepr essu remonit orismalfu nctioning. &
WA RNIN GThe reisarisk ofan accident ifth etir epr essur emonit oring system ismalfunct ioning
The tirepr essur emonit oring system cann otissue awa rning ifth er eis pressur eloss inone ormor eof thetir es.
Ti re swit hinsuf ficie nttirepr ess urema yim pairth edr iving charact eristic sas wellas steer ing and braking. #
Have thetir epr essur emonit oring system checkedat aqu alif ied spec ialistwo rkshop. 39
4
Displa ymessag esand warning/ indic ator lam ps

Wa
rning/indicat orlam p
Possible causes/conseq uencesand0050 0050
Solutions
0077 Ti re pressur emonit oring
sy stem warning lam plight s
up *T
he yello wtirepr essur emon itor ing system warning lam p(pr essur eloss/ malfun ction) islit.
The tirepr essur emon itor ing system has detected tirepr ess urelos sin at leas tone ofthetir es. &
WA RNIN GRisk ofan acci dent dueto insuf ficie nttirepr ess ure
R The tires can burst.
R The tires can wearexc essiv elyand/or unevenly .
R The drivi ng charact eristic sas wellas thesteer ing and braking maybe greatl yim pair ed.
Yo uco uld then lose control of theve hicle. #
Obser vethere comme ndedtirepr ess ures. #
Adjus tth etir epr essur eif neces sary. #
Stop theve hicle inaccor dance withth etra ffic con dition s. #
Chec kth etir epr essur eand thetir es. Displa
ymessag esand warning/ indic ator lam ps 395

003D
Stop Vehicle SeeOper ator's
Manual ................................................ 373
ç Suspend ed<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011> 360
: SwitchOf fLig hts <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> 341
: SwitchOn Hea dlamps ................ 341
0080 Trans miss ionOilOverheat ed
Dr ive wit hCautio n...............................3 51
0049 Turn On theIgnit iontoRelease
th ePa rking Brak e................................ 357
0072 Vehicle Ready toDrive Swi tch
th eIgnit ionOffBef oreEx iting .............3 43
0077 Warning Tire Malfunction ............ 376
0077 Wheel Sensor(s) Missing ............ 374
Ac tiveBli nd Spo tAssi stCur rently
Un available SeeOper ator' sMan ual.....3 63
Ac tiveBli nd Spo tAssi stInoper ative.... 363
Ac tiveBr ak eAssi stFunctio nsCur‐
re ntl yLim ited See Operator's Man‐
ua l..... .......................... ........................ 370 Ac
tiveBr ak eAssi stFunctio nsLim i‐
te dSee Oper ator's Manual .................. 371
Ac tiveDis tance AssistCur rently
Un available SeeOper ator' sMan ual.....3 60
Ac tiveDis tance AssistInoper ative..... .3 60
Ac tiveDis tance AssistNo wAv ailable
.. .. .........................................................3 60
Ac tiveLa ne Keeping AssistCur rentl y
Un available SeeOper ator' sMan ual.....3 63
Ac tiveLa ne Keeping AssistInopera‐
tiv e ...................................................... 363
Ac tiveSt eer ing Assis tCur rentl y
Un available SeeOper ator' sMan ual.....3 61
Ac tiveSt eer ing Assis tInoperativ e.......3 61
Ac tiveSt eer ing Asst.Cur rentl y
Un available DuetoMultiple Emer‐
ge ncy Stops ......................................... 361
Ad aptiveHig hbeam Assis tCur rently
Un available SeeOper ator' sMan ual.....3 42 Ad
aptiveHig hbeam Assis tIn oper a‐
tiv e ...................................................... 342
App lyBrak eto Shif tfr om 'P' ............... 348
Apply Brak eto Shif tto 'R' ...................3 49
Apply Brak eto Shif tto Dor R............. .349
Apply Parking Brak eRisk ofRo lling
Aw aySee Operator's Manua l..... .......... 351
Au xiliary Batt eryMal functi on.............. 352
Begi nning Emergency Stop .................. 361
Blind SpotAssis tCur rentl yUna vaila‐
ble See Opera tor's Manua l..... ............. 362
Blind SpotAssis tInoper ative..... .......... 362
Chec kTire Pressur eSoon ...................3 77
Chec kTire Pressur eThen Restar t
Ru nFla tIndi cator <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> ........378
Cr uise Control Inoper ative.................. 359
Cr uise Control Off...............................3 59
Decr easeSpeed .................................. 377
De vic eDe tected atDia gnos ticsCon‐
nectio nSee Operator's Manua l..... ......3 71 40
4
Inde x

Dr
iver' sDoo rOp en &Trans miss ion
No tin PRisk ofVehicle Rolling Away ..349
Fr ont Passeng erAirbag Disabled See
Oper ator's Manual ...............................3 36
Fr ont Passeng erAirbag Enabled See
Oper ator's Manual ...............................3 36
Hazard Warning Flashe rsMalfunc‐
tioning ......... ........................................3 42
N Pe rm anen tly Ac tiveRi sk ofRo lling
Aw ay <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011> 349
Only Shiftto 'P' when Vehicle isSta‐
tio nar y.................................................3 48
Pa rking Assistand PARK TRONI C
In operativ eSe eOperat or'sMan ual.....3 66
Pa rking LockIno per ativ eAppl yPa rk‐
ing Brak e.............................................3 51
Place theKe yin theMar kedSpace
See Oper ator's Manual ........................ 339
PRE-S AFEInoperativ eSee Oper a‐
to r's Manua l...... .................................. 337 Re
versing NotPo ssible Service
Re quired .............................................. 350
Ru nFla tIndi catorInop erati ve .............. 378
Ser vice Required Do NotShif tGear s
Vi sit Dealer .......................................... 350
Te ac hin gin Trans miss ionCom plete ..... 351
Te ac hin gin Trans miss ionOper ate
Sel ectorLeverAppl yBr ak efo rXX s
Ris kof Vehicle Rolling Away ................ 351
Ti re Press. Monit orCur rently
Un available .......................................... 374
Ti re Press. Monit orInopera tive ............ 374
Ti re Pressur eMonit orInopera tiveNo
Wheel Sensors .....................................3 74
Ti re sOv erheat ed................................. 376
To Dese lect Por N, Dep ress Brak e
and StartEn gin e.................................. 349
To switc hengine off,pr ess and hold
St art/ Stop butt onforat lea st3sec‐
onds orpress 3times. .........................346 Tr
af fic Sign AssistCur rently Unavail‐
able SeeOperat or'sMan ual................ 362
Tr af fic Sign AssistInoper ative.... .........3 62
Tr ans miss ionMalfun ction .................... 350
Tr ans miss ionMalfun ction Service
Re quired .............................................. 352
Tr ans miss ionMalfun ction Stop ........... 350
Displa yon thewindsh ield
see Head- upDis play
Dis tance control
see ActiveDis tance AssistDIS TRONI C
DI ST RO NIC
see ActiveDis tance AssistDIS TRONI C
Do or
Ch ild sa fety lock (rear door s)................ 63
Loc king(emer gency key) .......................7 2
Opening (from inside) ............................7 0
Un loc kin g(emer gency key) .................... 72
Un loc kin g(fr om insid e).........................7 0
Door controlpan el.....................................1 6
DO T,Tire Iden tificat ionNumbe r(TI N) ... 302 Inde
x40
5

H
Handbr ake
see Electr icpar king brak e
Handlin gch aract eristics (unus ual)....... 289
HAND S-FREEAC CESS ................................ 75
Hazar dwa rning light s.............................1 13
Hazar doussubstances
Inf ormation ............................................25
Head restra int
Fr ont (adjus tingmechanicall y).............. 92
Re ar (installin g/remo ving) .....................9 3
Re ar passe nger com partment
(adj ustin g) .............................................9 3
Head-up Display...... .................................210
Ad jus ting disp lay el eme nts(on-bo ard
com puter) ..... ...... .............................. ... 210
Ad jus ting thebr ightn ess(on-boar d
com puter) ....................................... ..... 210
Fu nctio n<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011>209
Menu (on-bo ardcom puter) ...... ............ 210
Oper ating thememor yfunc tion ............ 99
Se tting theposition (on-boar dcom‐
put er) ............................................. ...... 210 Swi
tching on/of f<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011> 211
Headlam ps
see Automatic driving lights
Headlin er(car e)....................................... 267
Help call
see Mercedes-Benz emergencycallsystem
High beam
Ac tivati ng/d eactiv ating ........... .............112
High-be amflasher ................................... 112
High-be amheadlam ps
Ad aptiveHig hbeam Assis t.............. .....1 14
Hill star tassi st<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> 159
HOLD functio n...... ................................... 158
Fu nctio n/no tes ................................... 158
Swi tching on/of f<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011> 158
Home screen (media display)
Ov ervie w ...... .................................... .... 213
Hood Opening/clo sing................................. 255 I
Iden tificatio nplat e
Engine ................................................. 323
Re frig er ant .......................................... 330
Ve hicle ................................................ 323
Ignition Switc hingon(Start/S topbutt on) ........ 127
Ignit ionkey
see Smar tKey
Imm obiliz er................................................ 84
Indi catorlam ps
see Warning/ indic ator lam ps
Individ ualdrive pr og ram
Con figur ing .......................................... 138
Sel ecting <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011> 137
Insid ere ar vie wmir ror
see Exterior mir rors
Insp ectio n
see ASSYST PLUS
Ins trument cluster
Fu nctio n/no tes ........................... 205, 206 Inde
x409

Ins
trum ent Disp lay
Fu nctio n/no tes ................................... 206
Ins trument cluster ...... ........................... 10
Wa rning/ indic ator lam ps................ .....3 81
Ins trum ent Disp layand on-b oard
com puter
Fu nctio n/no tes ................................... 205
Int ellig entLight System
Ad aptiveHig hbeam Assis t...................1 14
Cor nering light <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> ............114
Int erior ligh ting........ ................................ 116
Ad jus ting ............ .................................. 116
Ambi entlighti ng<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011> ...............116
Re adin glam p.......................................1 16
Swi tch-of fdel aytim e........... ................117
Int erior motion sensor
Ac tivati ng/d eactiv ating ........... ..............86
Fu nctio n<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011> 86
In te rn et radio
see TuneIn
iP hon e®
see Sma rtphone integratio n J
Jac k
St or ag elocation .............................. ..... 312
Jum p-startconne ction ............................2 80
Gene ralno tes ...................................... 278 K
KEYLESS- GO
Loc kingth eve hicle ........................ ........ 70
Pr oblem .................................................7 1
Un loc kin gse tting ............................ .......6 7
Un loc kin gth eve hicle ............................7 0
Kic kdow n.................................................1 43
Using ...................................................143
Knee airbag ................................................ 42 L
Label ing(tires)
see Tire labeling
Lam p
see Interior light ing
Lam ps(Ins trum ent Displa y)
see Warning/ indic ator lam ps Lane
detection (automatic )
se eAc tiveLa ne Keeping Assist
Lane Keeping Assist
see ActiveLa ne Keeping Assist
LA TC H-type (ISOFI X)child seat secur‐
ing system
In stallin g................................................ 57
Light switch
Ov ervie w .............................................. 111
Light ing
see Inte rior lighting
see Lights
Lights ........................................................ 111
Ad aptiveHig hbeam Assis t...................1 14
Au tomatic driving lights..... .................. 112
Comb inationswit ch<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011> 112
Cor nering light <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> .............114
Haza rdwa rning light s.......................... 113
High beam............ ................................112
High -beamflasher ................................ 112
Light switch..... ..................................... 111
Lo w-beam headlam ps.......................... 111
Pa rking light s.......................................1 11
Re ar foglam p....................................... 111 41
0
Inde x