2021 MERCEDES-BENZ A-CLASS SEDAN Owner's Manual

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 39
1

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 4). 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. 392
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 393

1,
2, 3...
4MA TIC...................................................... 141
Fu nctio n<0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011> 141
12 Vbatt ery
see Battery(v ehi cle)
12 Vso cket
see Socket(1 2 V)
36 0° Camer a........... ................................ 187
Fu nctio n<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011>187
Opening thecamer aco ver(r ear view
camer a)..... .......... ........... ..................... 189
Sel ecting avie w <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011> 189 A
A/C funct ion
Ac tivati ng/d eactiv ating (MBUX mul‐
tim ediasystem) .............................. ..... 122
Swi tching on/of f(contr olpa nel ).......... 121
ABS (Anti-lockBr ak ing System) .............1 53
Ac celer ation
see Kickdo wn Ac
ciden tand Break down Manag e‐
men t
Mer cedesme connect.................... .....2 31
Ac ous ticlocking verificat ion signa l
Ac tivati ng/d eactiv ating ........... ..............67
Ac tiv eBli nd Spo tAs sist <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011> 180
Br ak eap plica tion <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011> .............181
Fu nctio n<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011>180
Sy stem limit ations ........................... ....1 80
Ac tiv eBr ak eAs sist
Fu nctio n/no tes .................................... 173
Se tting <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011> 177
Ac tiv eDi stance AssistDI ST RO NIC ........ 162
Ac tiveEmerg encyStop Assis t.............1 70
Ac tiveLa ne Chang eAssi st<0011001100110011001100110011001100110011001100110011001100110011
001100110011> 171
Callin gup aspee d...............................1 64
Fu nctio n<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011>162
Incr easi ng/decr easingspeed ......... .....1 64
Re quiremen ts................................ ...... 164
Ro ute-based speedadap tatio n........... .167
St eer ing wheel buttons ........................ 164
St or ing aspeed .............................. ..... 164
Swi tching off/de activating ........... .......164
Swi tching on/a ctivating <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011> 164 Sy
stem limit ations ...............................1 62
Ac tiv eEme rgency Stop Assis t...............1 70
Ac tiv eLan eCha ngeAs sist <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011> 171
Ac tivati ng/d eactiv ating ........... ............172
Fu nctio n<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011>171
Ac tiv eLan eKe eping Assist.................... 182
Ac tivati ng/d eactiv ating ........... ............184
Ac tivati ng/d eactiv ating thewa rning .... 184
Fu nctio n<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011>182
Se tting thesensit ivity.......................... 184
Sy stem limits ....................................... 182
Ac tiv ePa rking Assis t.............................. 194
Exiti ngapa rking space ........................ 197
Fu nctio n<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011>194
Pa rking ................................................ 196
Sy stem limit ations ...............................1 94
Ac tiv eSe rvice System PLUS
see ASSYST PLUS
Ac tiv eSpe edLimit Assist <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011> 166
Dis play <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011> 166
Fu nctio n<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011>166
Ac tiv eSte ering Assis t.............................1 68
Ac tivati ng/d eactiv ating ........... ............170 39
4
Inde x

Ac
tiveEmerg encyStop Assis t.............1 70
Ac tiveLa ne Chang eAssi st<0011001100110011001100110011001100110011001100110011001100110011
001100110011> 171
Fu nctio n<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011>168
Sy stem limits ....................................... 168
Ad aptiv ecr uise contr ol
see ActiveDis tance AssistDIS TRONI C
Ad aptiv eHighb eamAssist
Fu nctio n<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011>112
Swi tching on/of f<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011> 113
Ad diti ves.................................................. 326
En gine oil............................................ 326
Fu el ..................................................... 326
Ad diti ves(engine oil)
see Additiv es
Ad diti ves(fuel)
see Fuel
Af ter-sales service center
see ASSYSTPL US
Air bag
Re duced protect ion ...............................4 4
Air cond itioning menu
Callin gup ............................................ 122 Air
distribut ion
Se tting (MB UXmult imed iasystem) ..... 122
Air inle t
see Air-water duct
Air pressu re
see Tire pressur e
Air vents ................................................... 123
Ad jus ting (front) ............. .....................123
Ad jus ting (rea r) ............. .......................124
Air vents
see Airvents
Ai r-re cir cula tion mode............................ 123
Air -water duct .......................................... 256
Ke eping free ........................................2 56
Airb ag....... ..................................................42
Ac tivati on ........... ...................................37
Fr ont airbag (driver ,fr ont passeng er)....4 2
Ins tallation locations .............................4 2
Knee airbag........................................... 42
Ov ervie w ..... ................................... ....... 42
PA SSENGER AIRBAGind icat orlam p.....4 7
Pr otect ion ....................................... .......4 3
Sid eairba g<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011001100110011> 42Wi
ndo wcur tain airbag ...........................4 2
Alar m
see Panic alar m
Al ar m system
see ATA(anti-t heftal ar m system)
All-wheel drive
see 4MA TIC
Ambient lighting
Se tting (multimedia system) ................1 14
Andr oidAuto
see Smar tphone integr ation
Animals Pets intheve hicle ................................. 65
Anti-loc kbr aking system
see ABS(An ti-loc kBr akin gSy stem)
Anti-skid chains
see Snowch ains
Anti -thef tpr otection
Imm obiliz er............................................ 84
Ant icip ator yoccup antprotection
see PRE- SAFE®
(anticip ator yoccu‐
pa nt protect ion) Inde
x395

see
PRE-S AFE®
PL US (anticipat ory
occupant protect ion plus)
Apple CarPla y®
see Smar tphon eint egr ation
Assis tance systems
see Drivin gsaf etysy stem
ASS YSTPL US <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
00110011>250
Batt erydi sconne ctionpe riods .............2 51
Dis play ing theser vice duedate........... 250
Fu nctio n/no tes ................................... 250
Re gular maint enance work <0011001100110011001100110011001100110011001100110011001100110011
00110011> 250
Spec ialser vice requ iremen ts.............. 250
ATA (anti-thef tala rm system) .................. 84
Ac tivati ng/d eactiv ating theint erior
mo tion sensor ......... .............................. 86
Ar ming/ disarming theto w- aw ay
alar m.....................................................8 5
Dea ctivating thealar m..................... ..... 85
Fu nctio n<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011> 84
Fu nctio nof theint erior motion sensor ..86
The tow- aw ay alar mfun ction .................8 5
AT TENTI ONASSIST <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011> 158, 160
Fu nctio n<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011>158
Se tting <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011> 160 Sy
stem limit ations ........................... ....1 58
At tention assistant
see ATTENTION ASSIST
Au thorized Mercedes- BenzCenter
see Qualif iedspec ialistwo rkshop
Au thorized workshop
see Qualif iedspecialis two rkshop
Au tomatic carwa sh mode
Ac tivati ng ........... ................................. 259
Au tomatic distanc eco ntr ol
se eAc tiveDis tance AssistDIS TRONI C
Au tomatic drivin glights ........... ............ ...110
Au tomatic engine star t(E CO star t/
st op fun ction) .......................................... 132
Au tomatic engine stop (ECO star t/
st op fun ction) .......................................... 132
Au tomatic fron tpass engerfr on tair‐
bag shutoff <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011001100110011> 45,47
Fu nctio nof theaut omatic front
passeng erfront airbag shutoff......... ..... 45
PA SSENGER AIRBAGind icat orlam p.....4 7 Au
tomatic fron tpass engerfr on tair‐
bag shutoff
see Automatic front pass engerfront
airb agshut off
Au tomatic measures afte ran acciden t... 51
Au tomatic mirrorfo lding function
Ac tivati ng/d eactiv ating ........... ............120
Au tomatic trans mis sion
DIR ECT SELEC Tleve r..... ......................137
Dr ive pr og ram disp lay ..... .....................1 35
Dr ive pr ogr ams ....................................134
DY NA MIC SELE CTswitc h.................... 134
Eng aging drive po sitio n............ ........... 139
Eng aging neu tral ............ ...................... 138
Eng aging park position ........................ 138
Eng aging reve rsege ar .........................1 38
Kic kdo wn ....... ......................................141
Manual gearshif ting.............................1 40
St eer ing wheel paddle shifters ............ 140
Tr ans miss ionposit iondispla y.............. 137
Tr ans miss ionposit ions........................ 137
Au tomatic trans mis sion (problem)
se eTr ans miss ion(problem ) 396
Inde x

B
BA S(Br akeAssis tSy stem) .....................1 53
Batt ery
Smar tKey <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011001100110011001100110011> 68
Batt ery
see Battery(v ehi cle)
Batt ery(v ehi cle) <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011> 277
Char ging.............................................. 276
Char ging(R emo teOnline) .................... 128
No tes ................................................... 273
No tes(s ta rting assis tance and
ch argin g) .............................................. 274
Re placing ...... .......................................2 77
St artin gassis tance <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> .....276
Bel t
see Seatbel t
Bli nd Spo tAs sist <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011> 180
Ac tivati ng/d eactiv ating ........... ............182
Fu nctio n<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011>180
Sy stem limit ations ...............................1 80
Br ak eAss istSy stem
see BAS(Br akeAssi stSystem) Br
ak efluid
No tes ................................................... 327
Br ak efo rc edis tribut ion
EB D(elec tronic brak efo rc edis tribu‐
tion )..................................................... 155
Br ak epad gaug e...... .................................257
Br ak es
ABS (Anti-loc kBr aking System) ........... 153
Ac tiveBr ak eAssi st<0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011001100110011001100110011> 173
BA S(Br akeAssi stSystem) ............... ... 153
Chec kingth ebr ak epad thickn ess ........ 257
Dr ivin gtips .......................................... 129
EBD (electr oni cbr ak efo rc edis tribu‐
tion )..................................................... 155
HOLD functio n............ .........................156
Limi tedbr aking effect (sa lt-tr eated
ro ads) ............................................ ...... 129
Ne w/r epla ced brak epad s/brake
discs .................................................... 129
No teson breaking-in ane wvehicle ..... 129
Po st-col lisi on brak e <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011001100110011> ....51
Br akin gass ista nc e
see BAS(Br akeAssi stSystem) Br
eakdo wn
Changing awheel ................................. 311
Ov ervie wof thehelp functions.............. 18
Ro adside Assis tance <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> ......24
To w- star tin g........................................ 283
To wing away <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> 279
Tr ans portingth eve hicle ......................2 81
Br eak down
see Flattir e
Butt ons
St eer ing wheel .................................... 203 C
Calls Mer cedes me...................................... 232
Camer a
see 360° Camer a
see Rear vie wcam era
Car key
see Smar tKey
Car wash
see Care
Car wash (car e)....................................... 257 Inde
x39
7

Car
-to-X -Com municat ion
Dis playing hazardwa rnings ............ .....2 25
Car e....... ...................................................263
Air -water duct ......................................256
Au tomatic carwash ........................ ..... 257
Car pet............................................. ....2 63
Decor ativefo il ................................ .....2 61
Dis play <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011> 263
Ext eriorlighti ng<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011> 261
Hea dline r<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011> 263
Ma tte finis h<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> ................260
Pa int wo rk <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011001100110011> 260
Pl as tic trim <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011> 263
Po we rwa sher ...................................... 259
Re alwo od/tr imelements ............... ....2 63
Re ar vie wcam era ................................ 261
Seat belt.............. .......................... ...... 263
Seat cover..... ........... ........................... 263
Sensor s..... ..................... ..................... 261
St eer ing wheel .................................... 263
Sur round viewcam era .........................2 61
Ta ilpipes ................ ...............................2 61
Wa shing byhand .............................. ... 260
Wheels/r ims........................................2 61
Wi ndo ws <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011001100110011001100110011> 261 Wi
per blades ........................................ 261
Car gotie-d ownrings ...............................1 03
Car pet(C are) ....... ....................................263
Chang eof addr ess .....................................24
Cha ngeof ow ner ship ................................ 24
Cha nging awheel
Pr eparation .......................................... 311
Ra ising theve hicle ........................... ....3 12
Cha nging awheel
see Emerge ncy sparewheel
Chan ginggears ....... ................................. 140
Manually ..............................................1 40
Chang inghub caps .................................. 311
Cha rging
Bat tery (vehicle) .............................. .....2 76
USB port.......................................... ....1 05
Che cking thebr ak epa dth ickness .........2 57
Child safetyloc k
Re ar door s.............................................6 3
Re ar side windows <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011> 64
Child seat
At tach ing (notes) ................................... 55 Basic
instructions ..................................5 1
Fr ont- passeng erseat (notes) ................. 61
LA TC H-type (ISOFIX )(ins talling) ............ 56
No teson risk sand dang ers ...................5 2
Secu ring on thefront passeng erseat ....6 2
Secu ring on there ar seat ...................... 60
To pTe ther ..............................................5 8
Child ren
Av oiding dangersin theve hicle .............5 2
Basi cins tructi ons <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011> .............51
Speci alsea tbel tre tract or ........... .......... 56
Ch ock ........... .............................................310
St or ag elocation ................................... 310
Choc k
see Choc k
Cleani ng
see Care
Clim atecontr ol
Ac tivati ng/d eactiv ating ........... ............121
Ac tivati ng/d eactiv ating theA/C
func tion (cont rolpanel) ........................ 121
Ac tivati ng/d eactiv ating theA/C
func tion (MBUX multimedia system) ....1 22 398
Index