2020 MERCEDES-BENZ SLC key battery

has
been setcorrect ly.Ifthis isnot the
case, repeat thesteps above. Problems
withtheside window s G
WARNING
If you close aside window againimmediately afterithas been blocked, theside window closes
with increased ormaximum force.Thereversing functionisthen notactive. Partsofthe body
could betrapped inthe closing areainthe process. Thisposes anincreased riskofinjury or
even fatalinjury.
Make surethatnoparts ofthe body areinthe closing area.Tostop theclosing process,
release theswitch orpush theswitch againtoreopen theside window. Problem
Possible
causes/co nsequences and0050 0050
Solutions As
ide window cannot
be closed because itis
blocked byobject s,e.g.
leaves inthe window
guide. X
Remove theobject s.
X Close theside window. As
ide window cannot
be closed andyoucan-
not see thecause. If
as ide window isobstructed duringclosing andreopens again
slightly:
X Immediately afterthewindow blocks,pullthecorresponding
switch againuntiltheside window hasclosed.
The side window isclosed withincreased force.
If as ide window isobstructed againduring closing andreopens
again slightly:
X Immediately afterthewindow blocks,pullthecorresponding
switch againuntiltheside window hasclosed.
The side window isclosed without theautomatic reversingfunc-
tion. The
side windows can-
not beopened orclosed
using theconven ience
opening/closing fea-
ture. The
SmartKey batteryisdischarged ornearly discharged.
X Check theSmartKey battery(Ypage 69)and replace itifneces-
sary (Ypage 69). Roof
Import
antsafety notes G
WARNING
If you donot fully open/close thesoft top,
the soft- tophydrau licsdepressurize aftera
short time.Thiscauses thesoft toptolower
unexpectedly andmay cause youorothers
to be trapped. Thereisar isk ofinjury. Always
openorclose thesoft topcom-
pletely. G
WARNING
Closing theroof manually isac omplicated
and techn ically demanding procedure,which
requires alot ofstrengt h.You orothers can
become trapped. Thereisar isk ofinjury. 78
RoofOpening
andclosing

The
high-beam headlamps areswitched on
automatically. The0057 indicator lampin
the instr ument cluster alsolights up.
If you aredriving atspeeds belowapprox-
imately 16mph (25km/ h)or other road
users havebeen detect edorthe roads are
adequa telylit:
The high-beam headlamps areswitched off
automatically. The0057 indicator lampin
the instr ument cluster goesout.The00CE
indicator lampinthe multifunct iondisplay
remains lit.
X To switch off:move thecombinat ion
switch backtoits normal position ormove
the light switch toanother position.
The 00CE indicator lampinthe multifunct ion
display goesout. Interior
lighting Overview
ofinterior lighting Overhead
controlpanel
0043 003D Switch esthe left- hand reading lamp
on/of f
0044 0033 Switch esthe automatic interiorlight-
ing cont rolon/of f
0087 003D Switch esthe right- hand reading lamp
on/of f
0085 004A Switch esthe inter iorlighting on/off Interior
lighting control
General notes In
order toprevent thevehicle's batteryfrom
discharging, theinter iorlighting functionsare
automatically deactivatedaftersome time, unless
theSmart Keyisin position 0048inthe
ignition lock.
The color andbrightn essofthe ambient light-
ing are setviathe multimedia system
(Y page 178).
Automa ticinterior lighting control X
To switch on:setthe switch tothe cent er
position.
When theautomatic interiorlighting control
is switched on,the switch isflush withthe
overhead controlpanel.
X To switch off:setthe switch tothe 0033
position.
The inter iorlighting automatically switcheson
if you:
R unlock thevehicle
R open adoor
R remove theSmart Keyfrom theignition lock
The inter iorlighting isswitched onfor aset
time when theSmart Keyisremoved fromthe
ignition lock.Youcanactivate thisdelayed
switch- offusing theon-board computer
(Y page 178). Replacing
bulbs Import
antsafety notes G
WARNIN
G
Bulbs, lampsandconn ector scan get very
hot when operating. Ifyou change abulb,
you could burnyourself onthese compo-
nent s.There isar isk ofinjury.
Allow these compon entstocool down
before changing abulb.
Vehicles withhalogen lamps
Do not use alamp thathasbeen dropped orif
its glass tubehasbeen scratc hed.
The lamp mayexplode if:
R you touch it
R itis hot
R you drop it
R you scratc hit
Only operate bulbsinenclosed lamps
designed forthat purpose. Onlyinstall spare Replacing
bulbs
101Lightsandwindshield wipers Z

G
WARNING
After ashort time, hillstart assistwil lnol on-
ger brake yourvehicl eand itcoul droll awa y.
There isar isk ofan accide ntand injury .
There fore,quickly move yourfoot from the
brake pedaltot he accele ratorpedal.Never
lea vethe vehicl ewhen itis held byhillstart
assi st.
Hill start assistisnot active if:
R you arepulling awayonal evelroad oron a
dow nhill gradient
R the transmissi onisin posi tion 005C
R the electric parkingbrake isapp lied
R ESP ®
is malfu nctioning EC
Os tart/stop function
Introduc tion The
ECO start/stop functionswitches the
engine offautomatical lyifthe vehicl eiss top-
ped under certain conditions.
The engine startsautomatica llywhen the
drive rwants topul lawa ya gain. The ECO
start/stop functiontherebyhelpsyou to
redu cethe fuel consumpti onand emiss ionsof
you rvehicl e.
Important safetynotes G
WARNING
If the engine isswi tched offautomatica lly
and youexit thevehicl e,the engine is
restarted automatical ly.T he vehicl emay
begi nmoving. Thereisar isk ofaccide ntand
injury .
If you wishtoe xitthe vehicl e,alw ayst urn
off the ignitio nand secure thevehicl e
aga inst rolling awa y. Gene
ralnote s 0043
ECO start/stop display
The ECO start/stop functionisactiva ted
whene veryou switch onthe engine using the
SmartKey orthe Start/Stop button.
If the engine hasbeen switched offautomati-
call ybythe ECO start/stop function,the00D6
ECO symb olisshow nint he multi function dis-
pla y.
Automatic engineswitch-off If
the vehicl eisb raked toas tandstil lwith the
transmissi onin005B or005C,t heECO start/stop
function switches offthe engine automatical ly.
The ECO start/stop functionisopera tional
when:
R the indica torlamp inthe ECO button islit
green
R the outsi detempera tureiswithi nthe range
that issui table forthe system
R the engine isat normal operatingtempera -
ture
R the settempera tureforthe vehicl einterior
has been reache d
R the battery issuffi ciently charged
R the system detects thatthewinds hieldis
not fogged upwhen theair-condi tioningsys-
tem isswi tched on
R the hood isclosed
R the drive r'sdoor isclosed andthedrive r's
seat beltisf astened
All ofthe vehicl e'ssystems remainactive
when theengine isstoppe dautomatical ly.
Automatic engineswitch-off cantake placea
maximu moffour times inar ow (initi alstop,
then three subsequ entstops).
The HOLD function canbeactiva tedifthe
engine hasbeen switched offautomatical ly.I t
is then notnecessa ryto continue applying the
brakes duringthe automatic stopphase.When
you depre ssthe accele ratorpedal,the engine Drivi
ng
121Drivi ngand parking Z

Disp
laymes sages Poss
iblecauses/co nsequences and 0050 0050
Solu tions 00AF
Rep laceK eyBat ter y Rep
laceK eyBat ter y The
SmartKey battery isdisc harged.
X Chan getheb atte ry (Y page 69). 00AF
Don 'tForget Your Don
'tForget Your
Key Key The
SmartKey isno tint he ignition lock.You haveopen edthed riv-
er' sd oor withthe engin eswit ched off.
The mult ifunction disp laysho wsthed isplay mes sage amaximum of
60 sec onds and issim plyarem inder.
X Tak ethe Sm artKey withyou when youleavethe veh icle. 00AF
Key NotDetected Key
NotDetected
(re dd isplay mes sage ) The
SmartKey isno tint he veh icle.
Aw arning tone also soun ds.
If th ee nginei ss wit ched off,you can nolonger lockthe veh iclec en-
tr ally orstart thee ngine.
X Pull overand stop thev ehicles afely assoo naspossibl e,payin g
att ention toroa dand traff icco nd ition s.
X Se cur ethe veh iclea gain strol linga way (Ypage 134).
X Loc ate theS martKey.
X Pre ss0076 onthes teer ing whee ltoc onfirmt hedisp laymes -
sage . Be
caus ethere isint erf ere ncef romas tron gs our ceofradi owaves,
th eS martKey isno td etec tedw hilstthe engin eisr unnin g.
Aw arning tone also soun ds.
X Pull overand stop thev ehicles afely assoo naspossibl e,payin g
att ention toroa dand traff icco nd ition s.
X Se cur ethe veh iclea gain strol linga way (Ypage 134).
X Inser tthe Sm artKey intot he ignition locka nd bring intok ey
mod e. 00AF
Key NotDetected Key
NotDetected
(whit edisplay mes sage ) The
SmartKey iscur ren tlyu ndetec ted.
X Chan gethel oc ati on oftheS martKey inthev ehicle.
If th eS martKey still can notb ed etec ted:
X Inser tthe Sm artKey intot he ignition locka nd turnittot he
des iredp osition . 00AF
Rem ove 'Start'B ut‐ Rem
ove 'Start'B ut‐
ton andInsert Key ton
andInsert Key The
SmartKey isco ntinu ally undetec ted.
KE YLE SS-GO istempo rarily malf unction ing orisdef ective. Aw arn-
ing tone also soun ds.
X Inser tthe Sm artKey intot he ignition locka nd turnittot he
des iredp osition .
X Vis itaq ualif iedspecialistwor kshop . 208
Disp
laymes sage sOn -boar dcomp uter andd ispla ys

Tow
inga nd tow -starti ng Impo
rtant safety notes G
WA
RNING
Wh entow ingortow -sta rtinganothe rvehicle
and itsweight isgre atertha nt he permi ssi-
bl eg ross we ight ofyour veh icle, the :
R the towingeyec ouldde tach itself
R the vehicle/tra iler comb inationc ouldrol l-
ove r.
The reisar isko fana ccident.
Wh entow ingortow -sta rtinganothe rvehi-
cle ,its we ight sho uldn otbe gre atertha n
the permi ssibleg ross we ight ofyour veh icle.
Deta ilso nthe permi ssibleg ross veh iclew eigh t
of your veh iclec an be fou ndonthe vehicle
id enti ficati on plate (Ypage 298 ).
! Wh
enActiv eBrake Assi st,Activ eDistance
Assi stDISTR ONICorthe HOLD functio nis
acti vated ,the veh icleb rakes automa tically
in certa insitua tions.
To avoidd amaget ot he veh icle, de acti vate
the sesystem sint he followi ng orsimil arsit-
ua tio ns:
R wh en tow ingthe vehicle
R in the carwash
! Onl
ysecuret he tow ropeortow bara tthe
tow ingeyes. Othe rwise, the vehiclec ouldbe
da ma ged.
! Do
not uset he tow ingeyef or reco very,
thi sc ouldda ma gethe vehicle. Ifin do ubt,
reco verthe vehiclew ithac rane.
! Wh
entow ing,pulla wa yslowly and
smo othly.Ifthe tractiv epoweristoo high,
the vehicles cou ldbe dama ged.
! Do
not tow with sling -typ eequipm ent.This
cou ldda ma gethe vehicle.
! Wh
entow ingaway veh icles with KEYL ESS-
GO ,use the key instea dofthe Star t/Stop
bu tton. Theautoma tictransmi ssion may
othe rwises hift to positio n005D when you
op en the driver 'sor fro nt-pa ssenge rdoor,
wh ich cou ldda ma gethe transmi ssion. !
Ma
kesure tha tthe electri cparkin gb rake
is rel eased .Ift he electri cparkin gb rake is
fa ulty, visitaq ualifi ed speci alistw orksh op.
! Yo
um aytow thevehiclef or am axim um
di sta nce of30 miles(50 kilome ters).At ow -
ing spee do f30m ph(50 km/h )mustn ot be
exce eded.
For towingdista nces over30m iles
(50 kilome ters),the entireveh iclem ustb e
ra ised and transp orte d.
! Wh
enyoua retow -sta rtingortow ing
ano thervehicle, its weight mu stnot exce ed
the maxim um permi ssibleg ross we ight of
yo ur veh icle.
It is be tter tohave the vehiclet ransp orte d
tha ntoh avei ttow ed away.
The automa tictransmi ssion mu stbe inpo si-
tio n005C when the vehiclei sb eing tow edaway.
The battery mustbe conne ctedandcharged.
Othe rwise, you:
R canno tturnt he Sma rtKeytop ositio n 0048 in
the igniti onlock
R canno tshift the automa tictransmi ssion to
po sitio n005C
Dea ctivate the automa ticlocking feature
be for ethe veh iclei st ow ed (Ypage 179 ).Yo u
cou ldothe rwiseb eloc ked outw henp ushing
or tow ingthe vehicle. In
stal ling /re mov ingt he tow inge ye
In stal ling the towinge ye G
WA
RNING
The exhaust tai lpipem aybe veryhot. The re
is ar isko fburns when rem oving the rear
cove r.
Do not touchthe exhaust pipe .Takep artic u-
la rc arew henr em oving the rearcove r. 26
4 Tow
inga nd tow -starti ngBreak downassistanc e