2020 MERCEDES-BENZ SLC light

Problems
withthewindshield wipers Problem
Possible
causes/co nsequences and0050 0050
Solutions The
windshield wipers
are jammed. Leaves
orsnow, forexample, maybeobstruct ingthe windshield
wiper movement .The wiper motor hasbeen deactivated.
X For safety reasons, youshould remove theSmartK eyfrom the
ignition lock.
or X Switch offthe engine usingtheStart /Stopbutton andopen the
driver's door.
X Remove thecause ofthe obstruct ion.
X Switch thewindshield wipersbackon. The
windshield wipers
fail completely. The
windshield wiperdriveismalfunction ing.
X Select another wiperspeed onthe combination switch.
X Have thewindshield wiperscheckedataq uali fied specialist
workshop. The
windshield washer
fluid from thespray noz-
zles nolonger hitsthe
cent erofthe wind-
shield. The
spray nozzlesare misaligned.
X Have thespray nozzlesadjusted ataq uali fied specialist work-
shop. Windshield
wipers
105Lightsandwindshiel dwipers Z

USA
only
0043 Sets thetemperature (Ypage 111)
0044 Switches themaximum coolingMAXCOOL onoroff (Ypage 113)
0087 Sets theairdistribution (Ypage 112)
0085 Defrosts thewindshiel d(Ypage 112)
0083 Switches coolingwithairdehumid ificationon/off(Ypage 110)
0084 Switches <0044004C00550010005500480046004C005500460058004F00440057004C0052
0051[ modeon/off (Ypage 114)
006B Sets theairflow (Ypage 112)
006C Switches therear window defroster on/off(Ypage 113) Notes
onusing theair-conditioning
system
Air-conditio ningsystem Below,
youcan find anumber ofnotes and
recommendations tohelp youusetheair-con-
ditioning systemoptimally .
R Switch oncooling withairdehumid ification
using the005A button. Theindicator lampin
the 005A button lightsup.
R Set thetemperature to72 ‡(22 †).
R Recommendation forairdistribution in
winter: setthe 009B and0061 settings.
Recommendation forairdistribution in
summer: setthe 009C setting. R
Only usethe"Windshie lddefrosting" func-
tion briefly untilthewindshiel disc lear
agai n.
R Only use<0044004C00550010005500480046004C005500460058004F00440057004C0052
0051[ modebriefly,e.g.
if there areunpleasa ntoutside odorsor
when inat unnel. Thewindows couldother-
wise fogup,since nofresh airisdrawn into
the vehicle in<0044004C00550010005500480046004C005500460058004F00440057004C0052
0051[ mode.
ECO start /stop function During
automatic engineswitch-off, thecli-
mate controlsystem onlyoperates ata
reduced capacity. Ifyou require fullclimate
cont rolcapacity, theECO start/st opfunction
can bedeactivated bypressing theECO but-
ton (Ypage 122). Overview
ofclimat econtrol systems
107Climat econtrol

USA
only
0043 Sets thetemperature, left(Ypage 111)
0044 Defrosts thewindshiel d(Ypage 112)
0087 Switches themaximum coolingMAXCOOL onoroff (Ypage 113)
0085 Switches coolingwithairdehumid ificationon/off(Ypage 110)
0083 Switches therear window defroster on/off(Ypage 113)
0084 Sets thetemperature, right(Ypage 111)
006B Switches <0044004C00550010005500480046004C005500460058004F00440057004C0052
0051[ modeon/off (Ypage 114)
006C Sets theairdistribution (Ypage 112)
006D Increases theairflow (Ypage 112)
006E Redu cestheairflow (Ypage 112)
006F Act<004C00590044005700480056001200470048004400460057004C005900440057
00480056[ climatecontrol(Ypage 110)
0070 Sets climate controltoautomatic (Ypage 111) Optimu
museofdual-z oneautoma tic
climate control
Climate controlsystem The
followi ngcont ains instruction sand recom-
mendations toenable youtoget the most out
of your 3-zon eautomatic climatecontrol.
R Act ivate climate controlusing the0058 and
005A buttons orthe 0056 button onthe
cont rolpanel ofthe climate control.The
indicator lampsinthe 0058 and005A but-
tons orthe 0056 button lightup.
R Set thetemperature to72 ‡(22 †).
R Only usethe"Windshie lddefrosting" func-
tion briefly untilthewindshiel disc lear
agai n.
R Only use<0044004C00550010005500480046004C005500460058004F00440057004C0052
0051[ modebriefly,e.g.
if there areunpleasa ntoutside odorsor when
inat unnel. Thewindows couldother-
wise fogup,since nofresh airisdrawn into
the vehicle in<0044004C00550010005500480046004C005500460058004F00440057004C0052
0051[ mode.
R Use theZONE function toadopt thetemper-
ature settings onthe driver's sideforthe
front -passenger sideaswell .The indicator
lamp inthe 00D6 button goesout.
R Use theresidua lheat function ifyou want to
heat orventilate thevehicle interior when
the ignition isswitched off.The residua l
heat function canonly beactivated ordeac-
tivated withtheignition switched off.
R Vehicles withCOMAND: ifyou change the
settings ofthe climate controlsystem, the
climate statusdisplayappea rsfor three sec-
onds atthe bottom ofthe screen inthe
COMAND display.You willsee thecurrent
settings ofthe various climate controlfunc-
tions. Overview
ofclimat econtrol systems
109Climat econtrol

ECO
star t/s top functi on Dur
ing auto maticeng ineswit ch-off,t he cli-
mat econtrol syst emonlyoper atesata
reduc edcapac ity.Ifyou requi refull clim ate
con trol capac ity,theE CO start /stopf unction
can bedeac tivate dbypres singthe ECO but-
to n( Ypage 122). Oper
ating thec lim atec ont rolsys-
tem s Activ
ating/d eactivatingc lim atec on-
tr ol
Gener alnot es When
thec lim ate control isswit ched off,the
air supply andaircirculat ionare also switched
off .The wind owscouldfog up. Ther efore,
swit choff clim atecontrol on lybrie fly
i Ac
tivate clim atecontrol prim arily usingthe
0058 button( Ypage 111).
Air- condi tioningsyst em X
Turn theS martKey toposit ion0048inthei gn i-
tio nlock( Ypage 118).
X To swit chon: turna irflow control 006B clock-
wise tothed esir edposit ion(excep tposit ion
0 )( Ypage 106).
X To swit choff:tur na irflow control 006B coun -
te r-clo ckwise toposit ion0(Y page 106).
3-z one autom atic clim atec ont rol X
Turn theS martKey toposit ion0048inthei gn i-
tio nlock( Ypage 118).
X To swit chon: pres sthe 0058 button.
The indicat orlamp inthe0058 buttonlight s
up. Airflow andairdist ribut ionare setto
auto maticmod e.
or
X Pre ssthe0078 button.
The indicat orlamp inthe0078 buttongoes
out .The prev iously selecteds ettin gs are
res tored.
X To swit choff:pres sthe 0078 button.
The indicat orlamp inthe0078 buttonlight s
up. Swit
ching cooling withairdeh umidi-
fica tion on/off
Gener alnot es If
you deac tivate the" Coolin gwithair- dehu-
midif ication"fun ction ,the air inside thev ehicle
will notb ec ooled. Theairinside thev ehicle
will also notb ed ehum idified. The wind owscan
fog upmor equick ly.Ther efore, deac tivate the
coo ling with air-dehum idification function only
brie fly.
The "Coolin gwithairdehum idification"fun c-
tio niso nlya vailabl ewhen thee ngine isrun -
nin g.The airinside thev ehicle iscoo ledand
dehum idifiedacc ording tothet em per atur e
selec ted.
Con densation may dripfrom theu nde rsideof
th ev ehicle when itis in coo ling mod e.This is
no rm aland notas ignthat there isam alfunc -
tio n.
Activ ating/d eactivating X
To act ivate: pres sthe 005A or0056 but-
to n.
The indicat orlamp inthe005A or0056 but-
to nl ight sup.
X To dea ctiv ate: pres sthe 005A or0056 but-
to n.
The indicat orlamp inthe005A or0056 but-
to ng oes out.The "Coolin gwithairdehum id-
ific atio n"fun ction has adelayed switch-off
feat ure. 110
Oper
ating thec lima tecontr olsyst emsClima tecontr ol

Problems
withthe"Cool ingwith airdehum idification" function Problem
Possible
causes/co nsequences and0050 0050
Solutions The
indicator lampin
the 005A or0056 but-
ton flashes threetimes
or remains off.The
"Cooli ngwith airdehu-
midification" function
cannot beswitched on. Cooling
withairdehumidification hasbeen deactivated duetoa
malfunction .
X Visit aquali fied specialist workshop. Setting
climate controltoautom atic
General notes Automatic
modeisonly availa blewith 3-zone
automatic climatecontrol.
In automatic mode,thesettemperature is
maintained automatically atac onst antlevel.
The system automatically regulatesthetem-
perature ofthe dispensed air,the airflow and
the airdistribution.
The automatic modefunctionsoptimally when
the "Cooli ngwith air<00470048004B00580050004C0047004C0049004C004600440057004C00520051
0005[ func-
tion isactivated. Ifnecessary, coolingwithair
dehumidification canbedeactivated.
If you deactivate the"Cooli ngwith air-dehu-
midification" function,theairinside thevehicle
will notbecooled. Theairinside thevehicle
will also notbedehumidified .The windows can
fog upmore quickly. Therefore, deactivate the
cooling with<0044004C0055001000470048004B00580050004C0047004C0049004C00460044
0057004C00520051[ functiononly
briefly.
Automat iccontrol X
Turn theSmartK eytoposition 0048inthe igni-
tion lock (Ypage 118).
X Set thedesired temperature.
X To activate: pressthe0058 button.
The indicator lampinthe 0058 button lights
up. Automatic airdistribution andairflow are
activated.
X To switch tomanua lmode: press the
008F button.
or X Press the0095 or0097 button.
The indicator lampinthe 0058 button goes
out. Setting
thetemp eratu re
Air-conditioning system X
Turn theSmartK eytoposition 0048inthe igni-
tion lock (Ypage 118).
X To increase orreduce: turncontrol0043
clockwise orcounter -clockwise
(Y page 106).
Only change thetemperature settingin
small incremen ts.Start at72 ‡(22 †).
i If
you turn control0043 counter -clockwiseto
the lowest temperature setting,air-recircu-
lation mode mayactivate automatically,
depending onthe outside temperature.
3-zone automaticclimate control Differen
ttemperatures canbeset forthe driv-
er's andfront -passenger sides.
X Turn theSmartK eytoposition 0048inthe igni-
tion lock (Ypage 118).
X To increase ordecrease: turncontrol0043
or 0084 clockwise orcounter -clockwise
(Y page 108).
Only change thetemperature settingin
small incremen ts.Start at72 ‡(22 †).
i If
you turn controls0043and 0084counter -
clockwise tothe lowest temperature setting,
<0044004C00550010005500480046004C005500460058004F00440057004C0052
0051[ modemayactivate auto-
matically, depending onthe outside temper-
ature. Operat
ingthe climate controlsystems
111Climat econtrol

Setting
theairdistr ibution
Air-conditioning systemX
Turn theSmartK eytoposition 0048inthe igni-
tion lock (Ypage 118).
X Press oneormore ofthe 009C, 009B,0061
buttons.
The correspondin gindicator lamplights up
briefly.
The following airdistribution settingscan be
selected:
0061 Directsairthrough thedefroster vents
009B Directsairthrough thefootwell air
vent s
009C Directsairthrough thecent erand side
air vent s
i You
canalso activate severalairdistribu-
tion settin gssimultaneously. Todo this,
press multiple airdistribution buttons.The
air isthen directed throughvariousvents.
3-zone automaticclimate control X
Turn theSmartK eytoposition 0048inthe igni-
tion lock (Ypage 118).
X Press the008F button repeatedly untilthe
desired symbolappears inthe display .
The following airdistribution settingscan be
selected:
009C Directsairthrough thecent erand side
air vent s
009B Directsairthrough thefootwell air
vent s
009F Directsairthrough thecent er,side and
footwell vents
0061 Directsairthrough thedefroster vents
0087 Directsthe airflow through the
defroster, centerand side airvent s
(Canada only)
0086 Directsairthrough thedefroster and
footwell vents
008F Directsthe airflow through the
defroster vents,the cent erand side air
vent sasw ellasthe footwell airvent s
(Canada only)
i Regardle
ssofthe airdistribution setting,
airflow isalwa ysdirected throughtheside
air vent s.You canonly close theside air vent
s,by fully closing theadjuster onthe
side airvent s(Ypage 115). Setting
theairflow
Air-conditioning system X
Turn theSmartK eytoposition 0048inthe igni-
tion lock (Ypage 118).
X To increase orreduce: turncontrol006B
clockwise orcounter -clockwise
(Y page 106).
3-zone automaticclimate control X
Turn theSmartK eytoposition 0048inthe igni-
tion lock (Ypage 118).
X To increase orreduce: pressthe0097 or
0095 button. Switching
theZONE function on/off
This funct ionisonly availa blewith 3-zone
automatic climatecontrolonvehicles forCan-
ada.
X To switch on:press the00D6 button.
The indicator lampinthe 00D6 button lights
up. The temperature settingfor the driver's
side isnot adopted forthe front -passenger
side.
X To switch off:press the00D6 button.
The indicator lampinthe 00D6 button goes
out. Thetemperature settingfor the driver's
side isadopted forthe front -passenger side. Defrosting
thewindshield
General notes You
canusethis funct iontodefrost thewind-
shield ortodefrost theinside ofthe wind-
shield andtheside windows.
Switch offthe "Windshield defrosting"function
as soon asthe windshield isclear again. 112
Operat
ingthe climate controlsystemsClimat econtrol

Switching
the"windshield defrosting"
function onoroff X
Turn theSmartK eytoposition 0048inthe igni-
tion lock (Ypage 118).
X To switch on:press the0064 button.
The indicator lampinthe 0064 button lights
up.
The climate controlsystem switches tothe
following functions:
R high airflow
R high temperature
R air distribution tothe windshield andfront
side windows
R <0044004C00550010005500480046004C005500460058004F00440057004C0052
0051[ modeoff
X To switch off:press the0064 button.
The indicator lampinthe 0064 button goes
out. Thepreviously selectedsettingsare
restored. Air-recirculation moderemains
deactivated.
or X Dual-zone automatic climatecontrol:press
the 0058 button.
The indicator lampinthe 0064 button goes
out. Airflow andairdistribution aresetto
automatic mode. MAX
COOL maxim umcool ing
The MAX COOL functionisonly availa blein
vehicles forthe USA.
MAX COOL isonly operational whenthe
engine isrunning.
X To activate: pressthe00C9 button.
The indicator lampinthe button lightsup.
X To deactivat e:press the00C9 button.
The indicator lampinthe button goesout.
The previously selectedsettingsare
restored.
When youactivate MAXCOOL, climate control
switches tothe following functions:
R maximum cooling
R maximum airflow
R <0044004C00550010005500480046004C005500460058004F00440057004C0052
0051[ modeon Removing
condensation fromthe
window s
Windows foggeduponthe inside X
Act ivate the005A or0056 cooling withair
dehumidification function.
X Dual-zone automatic aircondition ing:acti-
vate the0058 mode button.
X Ifthe windows continue tofog up,activate
the 0064 "Windshield defrosting"function.
i You
should onlyselect thissettin guntil the
windshield isclear again.
Windows foggeduponthe outside X
Act ivate thewindshield wipers.
X Air-c onditioning system:pressthe009C or
009B button.
X Dual-zone automatic aircondition ing:press
the 008F button untilthe009C or009B
symbol appears inthe display .
i You
should onlyselect thissettin guntil the
windshield isclear again. Rear
window defroster
General notes The
rear window defroster hasahigh current
draw. Youshould therefore switchitoff as
soon asthe rear window isclear. Otherwise,
the rear window defroster switchesoffauto-
matically afterseveral minutes.
If the battery voltage istoo low, therear win-
dow defroster mayswitch off.
<002400460057004C005900440057004C0051004A001200470048004400460057
004C005900440057004C0051004A> X
Turn theSmartK eytoposition 0048inthe igni-
tion lock (Ypage 118).
X Press the006C button.
The indicator lampinthe 006C button lights
up orgoes out. Operat
ingthe climate controlsystems
113Climat econtrol

Problems
withtherear window defroster Problem
Possible
causes/co nsequences and0050 0050
Solutions The
indicator lampon
the 006C button
flashes. Therear win-
dow defroster hasdeac-
tivated prematurely or
cannot beactivated. The
on-board voltageistoo low because toomany electrical con-
sumers areswitched on.
X Switch offany consumers thatarenot required, e.g.reading
lamps, interior lighting orthe seat heating.
When thebattery issufficiently charged,therear window
defroster canbeactivated again. The
roof isopen.
X Close theroof.
When theroof isclosed, therear window defroster canbeactiva-
ted again. Switching
air-recirculation mode
on/off
General notes If
you switch on<0044004C00550010005500480046004C005500460058004F00440057004C0052
0051[ mode,the
windows canfogupmore quickly, inparticular
at low temperatures. Onlyuse<0044004C00550010005500480046004C005500460058004F00440057004C0052
0051[
mode briefly toprevent thewindows fromfog-
ging up.
<002400460057004C005900440057004C0051004A001200470048004400460057
004C005900440057004C0051004A> X
Turn theSmartK eytoposition 0048inthe igni-
tion lock (Ypage 118).
X To activate: pressthe0072 button.
The indicator lampinthe 0072 button lights
up.
i Air-r
ecirculation modeisautomatically
activated athigh levels ofpollution (dual-
zone automatic climatecontrolonly) orat
high outside temperatures. Whenair-recir-
culation modeisactivated automatically,
the indicator lampinthe 0072 button isnot
lit. Outside airisadded afterabout
30 minutes.
X To deactivat e:press the0072 button.
The indicator lampinthe 0072 button goes
out. i
Air-r ecirculation modedeactivates auto-
matically:
R after approximately fiveminutes atout-
side temperatures belowapproximately
41 ‡(5† )
R after approximately fiveminutes ifcooling
with airdehumidification isdeactivated
R after approximately 30minutes atoutside
temperatures aboveapproximately 41‡
(5 †) ifthe "Cooli ngwith airdehumidifi-
cation" functionisactivated Switching
theresidual heatonoroff
General notes The
residual heatfunct ionisonly availa bleon
vehicles forCanada.
It is possible tomake useofthe residual heat
of the engine tocont inue heating thestation-
ary vehicle forupto30 minutes afterthe
engine hasbeen switched off.The heating
time depends onthe setinterior temperature.
<002400460057004C005900440057004C0051004A001200470048004400460057
004C005900440057004C0051004A> X
Turn theSmartK eytoposition 0092inthe igni-
tion lock orremove it(Y page 118).
X To activate: pressthe004B or0056 but-
ton.
The indicator lampinthe 004B or0056 but-
ton lights up.
i The
blower willrun atalow speed regard-
less ofthe airflow setting. 114
Operat
ingthe climate controlsystemsClimat econtrol