coolant MERCEDES-BENZ A-CLASS SEDAN 2021 User Guide

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions #
Have theengine cooling system checkedat aqu alif ied spec ialistwo rkshop.
ÿ
Coola ntToo HotStop Vehi-
cle Turn Engine Off *T
hecoolant istooho t. #
Pull overand stop theve hicle safely and switc hof fth eengine, paying attent ion toroad and traffic condi tions. &
WARNIN GDang erofburnswhen opening thehood
If yo uopen thehood when theengine hasoverheat edordur ing afire intheengine compartmen t,yo uco uld
co me intoco ntact withho tga ses orother escaping operating fluids. #
Beforeopen ingthehood, allowtheengine tocool down. #
Intheeve ntofafire intheengine compartmen t,ke ep thehood closed andcallthefire ser vice. #
Waitunt ilth eengine hascooled down. #
Mak esur eth at theair supply tothera diat orisno tobs truct ed. #
Avoiding highloads ontheengine, drive to thenear estqu alif ied spec ialistwo rkshop. Indoing so,ensur eth at
th ecoolant temp eratur edispla yre mains belowthere dmar king.
ÿ *T
hefanmo toris faulty . #
Avoiding highloads ontheengine, drive to thenear estqu alif ied spec ialistwo rkshop. Indoing so,ensur eth at
th ecoolant temp eratur edispla yre mains belowthere dmar king. Displa
ymessag esand warning/ indic ator lam ps 34
5

Wa
rning/indicat orlam p
Possible causes/conseq uencesand0050 0050
Solutions #
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. #
Notethemessag eson themultifunc tiondispla y. Engine
Wa
rning/indicat orlam p
Possible causes/conseq uencesand0050 0050
Solutions
ÿ Coolant warning lam p(red) *T
he redcoolant warning lam pis lit while theengine isrunning .
Po ssible causes:
R The temp eratur esensor ismalfunct ioning
R The coolant leve lis toolow
R The airsuppl yto thera diat orisobs truct ed
R The radiat orfanis faulty
R The engin eco olan tpum pis faulty
If th er eis an additional warning tone, thecoolant temp eratur ehas exceeded themaximum permissible temp eratur e. 382
Displa ymessag esand warning/ indic ator lam ps

Wa
rning/indicat orlam p
Possible causes/conseq uencesand0050 0050
Solutions &
WA RNIN GDang erofburnswhen opening thehood
If yo uopen thehood when theengine hasoverheat edordur ing afire intheengine compartmen t,yo uco uld
co me intoco ntact withho tga ses orother escaping operating fluids. #
Beforeopen ingthehood, allowtheengine tocool down. #
Intheeve ntofafire intheengine compartmen t,ke ep thehood closed andcallthefire ser vice. #
Stop theve hicle immediat elyinaccor dance withth etraf fic condi tions andswitchof fth eengine. Donotcon tinue
dr iving under anycir cums tances. #
Notethemessag eson themultifunc tiondispla y.
If th ecoolant temp eratur edispla yis at thelowe rend ofthete mp eratur escale: #
Consult aqu alif ied spec ialistwo rkshop.
If th ecoolant temp eratur edispla yis at theupper endofthete mp eratur escale: #
Exitth eve hicle andkeep asaf edis tance from itunti lth eengine hascooled down. #
Chec kth ecoolant leve l(/ page255) . #
Mak esur eth at theair supply tothera diat orisno tobs truct ed. #
Avoiding highloads ontheengine, drive to thenear estqu alif ied spec ialistwo rkshop. Indoing so,ensur eth at the
cool anttemp eratur edispla yre mains belowthere dar ea. Displa
ymessag esand warning/ indic ator lam ps 383

Wa
rning/indicat orlam p
Possible causes/conseq uencesand0050 0050
Solutions
ÿ Coolant warning lam p(yel‐
lo w) *T
he yello wcoolan twa rning lam pis lit while theengine isrunning .
Po ssible causes:
R The temp eratur esensor ismalfunct ioning
R The charge air,tr ans miss ionoilorbat tery cool ingisfaulty #
Avoiding highloads ontheengine, drive to thenear estqu alif ied spec ialistwo rkshop.
00B9
Engine diagnosis warning
lam p *T
he yello wChec kEn gine warning lam pis lit while theengine isrunning .
A ma lfunctio nha soccu rred intheengine, theex haus tsy stem orthefuel system.
The emission limitvalues maybe exc eeded andtheengine maybe inemer gency mod e.
In som est at es, legalrequ iremen tsstipulat eth at youmus timm ediat elyco nsult aqu alif ied spec ialistwo rkshop as
soon astheye llo wChec kEn gine warning lam plight sup. #
Have theve hicle checkedas soon aspossible ataqu alif ied spec ialistwo rkshop.
003D Electr icalmalfunction warn‐
ing lam p *T
heredelect rical fault warning lam pis lit.
Ther eis afa ult intheelectr ics. #
Notethemessag eson themultifunc tiondispla y. 38
4
Displa ymessag esand warning/ indic ator lam ps

Ac
tivati ng/d eactiv ating thesync hro‐
nizat ionfunc tion (cont rolpanel) .......... 122
Ac tivati ng/d eactiv ating thesync hro‐
nizat ionfunc tion (MBUX multimedia
sy stem) .......................................... ...... 122
Air -reci rculati onmod e.................... .....1 23
Au tomatic control..... ...........................122
Callin gup theair con ditionin gmenu ...122
Con trol pan elfor3-zone automatic
clima tecontr ol<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011> ........121
Fil ling cap acityforPA Goil ...................3 30
Fr ont airvents <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> ............123
No te <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011> 121
Re ar air vents <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> ..............124
Re frig er ant .......................................... 329
Re frig er ant filling capac ity.............. .....3 30
Re mo ving condensatio nfrom the
windo ws<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011001100110011001100110011> 123
Re sidua lheat ....................................... 123
Se tting (MBU Xmul time diasy stem) ..... 122
Ve ntil ating theve hicle (convenie nce
op eni ng) <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011> 78
Coc kpit .........................................................6
Ov ervie w .......................................... .......6 Cof
feecup symbol
see ATTENTION ASSIST
Collisi ondetection (parked vehicl e)...... 150
Comb inationswitc h................................ 110
Com puter
see On-boar dcom puter
Consum ption indicat or
Calling up........................................ .... 137
Con venience closing featur e....... ............. 79
Co nvenience opening................................ 78
Coolant (engine)
Capacit y.......................................... .... 328
Chec kleve l.......................................... 255
No tes ................................................... 327
Cop yrights
License .................................................. 35
Tr ademar ks<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011001100110011> 35
Co rnering light .........................................1 12
Cr oss Traf fic Aler t...................................1 99
Cr oss wind Ass ist
Fu nctio n/no tes ................................... 155 Cr
uise contr ol.......................................... 160
Ac tivati ng ........... ..................................161
Butt ons <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011> .......161
Callin gup aspee d...............................1 61
Dea ctivating ............ .............................161
Fu nctio n<0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011> 160
Re quiremen ts:...................................... 161
Sel ecting <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011001100110011001100110011> 161
Se tting aspe ed <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011> 161
St or ing aspeed .................................... 161
Sy stem limit ations ...............................1 60
Cus tomer Assist ance Center (CAC ).........2 9
Cus tomer Relat ions Depar tment .............2 9 D
Dam pingad just men t........... ................... 184
Dash board
see Cockpit
Data acquisition
Ve hicle .................................................. 30
Data protection rights
Dat ast or ag e .......................................... 33 Inde
x399

Ve
hicl eto ol kit ........................................ 268
TIRE FITkit ...........................................2 68
To wing eye ....................................... ... 282
Ve ntilat ing
Con venie nce openi ng <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> ...78
Ve nts
see Airvents
VIN <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> ...........322
Engi necom partment ......................... ..322
Identif icationpla te <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011001100110011001100110011> 322
Wi ndsh ield <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
00110011>322
Vi sion
Re mo ving condensatio nfrom the
windo ws<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011001100110011001100110011> 123
Vo ice Contr olSy stem
Fu nctio n<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011>212
St artin g................................................ 212 W
Wa rning lam ps
see Warning/ indic ator lam ps
Wa rning system
see ATA(anti-t heftal ar m system) Wa
rning triang le
Re mo ving ............................................ 265
Se tting up........................................ .... 266
Wa rning/indicat orlam p
0025 ABSwa rning lam p...................... 390
00D4 ActiveBr ak eAssi stwa rning
lam p................................................ .... 389
004D Brakesy stem warning lam p
(Canada only).................................. .... 388
0027 Brakewa rning lam p(US Aonl y).. 388
004D Brakeswarning lam p(yello w)
(Canada only).................................. .... 387
ÿ Coolant warning lam p(red) ........ 382
ÿ Coolant warning lam p(yello w) ...3 84
0024 Electricpa rking brak eindic ator
lam p(red) (Canada only).....................3 86
0049 Electricpar king brak eindi cator
la mp (red) (USAonl y).......................... 386
003D Electrical malfunc tionwarning
lam p................................................ .... 384
00B9 Engine diagno siswarning lam p.. 384 00BB
ESP®
OFF warning lam p.............3 91
00E5 ESP®
wa rning lam pflashes ........ 390
00E5 ESP®
wa rning lam plight sup ...... 391
00D4 Fuelreser vewarning lam p
fl ashes .................................................3 85
00D4 Fuelreser vewarning lam p
light sup .............................................. 385
Ù Powe rst eer ing warning lam p
(r ed) .....................................................3 81
00C6 Recup erati ve Brak eSy stem
wa rning lam p(US Aonl y).....................3 87
0075 Restra int system warning lam p.. 380
00E9 Seatbeltwarning lam pflashes ...3 81
00E9 Seatbel twa rning lam plight s
up ........................................................ 381
0024 Theelect ric pa rking brak e(yel‐
lo w) indic ator lam p.............................. 386
0077 Tire pressur emonit oring sys‐
te m wa rning lam pflashes ...................3 92 Inde
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