MERCEDES-BENZ SLC-Class 2017 R172 Owners Manual

XMake sure that the SmartKey is in position1
or 2in the ignition lock.
XPress button :for the left exterior mirror or
button ;for the right exterior mirror.
The indicator lamp in the corresponding but-
ton lights up in red.
The indicator lamp goes out again after some
time. You can adjust the selected mirror using
adjustment button =as long as the indicator
lamp is lit.
XPress adjustment button =up, down, to the
right or to the left.
The exterior mirror must be set to aposition
that provides you with agood overview of
traffic conditions.
The convex exterior mirrors provide alarger field
of vision.
The exterior mirrors are automatically heated
after startin gthe vehicle if the rear window
defroster is switched on and the outside tem-
perature is low. Mirror heating lasts up to 10
minutes.
iYou can also heat up the exterior mirrors
manually by switching on the rear window
defroster.
Folding the exterior mirrors in or out
electrically
XMake sure that the SmartKey is in position 1
or 2in the ignition lock.
XBriefly press button :.
Both exterior mirrors fold in or out.
iMake sure that the exterior mirrors are
always folded out fully while driving. They
could otherwise vibrate.
Folding the exterior mirrors in or out
automatically
If the "Fold in mirrors when locking" function is
activated in the on-board computer
(
Ypage 174):
Rthe exterior mirrors fold in automatically as
soon as you lock the vehicle from the outside.
Rthe exterior mirrors fold out again automati-
cally as soon as you unlock the vehicle and
then open the driver's or front-passenger
door.
iThe exterior mirrors do not fold out if they
have been folded in manually.
Exterior mirror pushed out of position
If an exterior mirror has been pushed out of
position, proceed as follows:
XVehicles without electrically folding exte-
rior mirrors: move the exterior mirror into
the correct position manually.
XVehicles with electrically folding exterior
mirrors: press and hold mirror-folding button
until you hear the mirror click into place
(
Ypage 89).
The mirror housing is engaged again and you
can adjust the exterior mirrors as usual
(
Ypage 88).
Mirrors89
Seats, steering whee land mirrors
Z

Automa tica nti-glar emirror s
GWARNIN G
Electrolyt emay escape if th eglassinana uto-
matic anti-glare mirror breaks .The electrolyt e
is harmful and causes irritation .Itmustn ot
come int ocontac twithy our skin, eyes ,res -
piratory organs or clothing or be swallowed.
There is ariskofi njury.
If you come int ocontac twitht he electrolyte,
observ ethe following:
RRins eoff th eelectrolyt efromy our skin
immediately wit hwater.
RImmediately rinse th eelectrolyt eout of
your eyes thoroughly wit hclean water.
RIf th eelectrolyt eisswallowed, immediately
rinse your mout hout thoroughly. Do no t
induce vomiting .
RIf electrolytecom es int ocontac twithy our
skin or hair or is swallowed, see kmedical
attention immediately.
RImmediately chang eout of clothing whic h
has come int ocontac twithe lectrolyte.
RIf an allergic reaction occurs, see kmedical
attention immediately.
The rear-view mirror and th eexter iorm irror on
th ed river's side automatically go int oanti-glare
mod eift hefollowin gconditi onsa re met simul-
taneously:
Rth ei gnition is switched on and
Rinciden tligh tfro mh eadlamp sstrikes th esen-
sor in th erear-view mirror
The mirror sdonotgo int oanti-glare mod eif
revers egear is engage doriftheinterior lighti ng
i

s switched on .
Parking position for th eexteri or mir-
ror on thef ront-passenger side
Setting and stori ng theparki ng position
Usin grevers egear
You can store th eparking position of th eexte-
rio rm irror on th efront-pa ssenger side usin g
memory butto nM ?.T he revers egear mus tnot
be engage dduring th eprocess.
XMak esuret hatthe vehicl eisstationary and
that th eSmartKey is in position 2in th eigni-
tion lock.
XPress butto n; for th eexter iorm irror on th e
front-passenger side .
XEngage reversegear .
The exterio rmirror on th efront-pa ssenger
side moves to th epreset parking position .
XUse adjustmentbutto n= to adjust th eexte-
rio rm irror to aposition that allows you to see
th er ear whee land th ecurb.
The parking position is stored.
iIf you shif tthe transmission to another posi-
tion ,the exterio rmirror on th efront -
passenger side return stothedrivin gposition .
Usingthe memory button
90Mirrors
Seats ,steering wheel and mirrors

You can position the front-passenger side exte-
rior mirror in suchaway that you can see the
rear wheel on that side as soon as you engage
reverse gear. This settin gcan be stored using
memory button M?.
XMake sure that the SmartKey is in position 2
in the ignition lock.
XWith the exterior mirror on the front-
passenger side activated, use adjustment
button =to adjust the exterior mirror. In the
exterior mirror, the rear wheel and the curb
should be visible.
XPress memory button M? and one of the
arrows on adjustmentb utton=within three
seconds.
The parking position is stored if the exterior
mirror does not move.
XIf the mirror moveso ut of position, repeat the
steps.
Calling up astored parking position set-
ting
XTurn the SmartKey to position 2in the ignition
lock.
XAdjust the exterior mirror on the front-
passenger side using button ;.
XEngage reverse gear.
The exterior mirror on the front-passenger
side movestothe stored parking position.
The exterior mirror on the front-passenger side
movesb ack to its original position:
Ras soon as you exceed aspeed of 9mph
(15 km/h)
Rif you press button :for the exterior mirror
on the driver's side
Memory function
Storing settings
GWARNING
If you use the memory function on the driver's side while driving, you could lose control of
the vehicle as aresult of the adjustments
being made. There is arisk of an accident.
Only use the memory function on the driver's
side when the vehicle is stationary.
GWARNING
When the memory function adjust sthe seat or
steeringw heel, you and other vehicle occu-
pant s–p articularly children –could become
trapped. There is arisk of injury.
While the memory function is makin gadjust-
ments, make sure that no one has any body
partsint he sweep of the seat or steering
wheel. If somebody becomes trapped, imme-
diately release the memory function position
button. The adjustmentp rocess is stopped.
GWARNING
Children could becom etrapped if the yacti-
vate the memory function ,particularly when
unattended. There is arisk of injury.
When leaving the vehicle, always tak ethe
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
The memory function can be used at any time,
e.g. even when the SmartKey isn' tinthe ignition
lock.
With the memory function ,you can store up to
three differents ettings, e.g. for three different
people.
The followings ettings are stored as asingle
memory preset:
Rposition of the seat, backrest and head
restraint
Rdriver's side: steeringw heel position
Rdriver's side: position of the exterior mirrors
on the driver's and front-passenger sides
Memory function91
Seats, steering wheel and mirrors
Z

XAdjust the seatelectrically (Ypage 84).
XOn the driver's side ,adjus tthe steering wheel
(Ypage 87 )and the exterio rmirrors
(Ypage 88).
XPress memory button Mand one of the stor-
ag ep osit ionb uttons 1,2 or 3withint hree
seconds.
The settings ar estored in the selecte dpreset
position. Atone sounds when the settings
have been completed.
Calling up astored setting
XPress and hol dthe relevant storag eposition
button 1,2 or 3unti lthe seat, steering wheel
and exterio rmirrors ar einthe stored position.
iThe setting procedur eisinterrupte dassoon
as yo urelease the storag eposition button.
92Memory function
Seats, steering wheel andmirrors

Exteriorlighting
General notes
For reasonsofs afety, Mercedes-Ben zrecom-
mends that you driv ewith th elightss witched on
even durin gthe daytime. In somec ountries,
operatio noftheheadlamps varies due to legal
requirement sand self-imposedo bligations.
Settingthe exterio rlighting
Settin goptions
Exterior lighting can be set using:
Rthel ight switch
Rthec ombinatio nswitch (Ypage 94)
Rtheo n-board compute r(Ypage 172)
Light switch
Operation
1WLeft-hands tanding lamps
2 XRight-hand standing lamps
3TParking lamps ,licens eplatea nd
instrumen tcluste rlighting
4 ÃAutomatic headlampm ode, controlled
by th elight sensor
5 LLow-beam/high-beam headlamps
BRRear fog lamp
If you hear awarning tone when you leave the
vehicle ,the lightsm ay still be switched on.
XTurn thelight switch to Ã.
The exteriorl ighting (excep tthe parking/stand-
ing lamps )switches off automaticall yifyou:
Rremove th eSmartKey from th eignition lock
Ropen th edriver'sd oor with th eSmartKey in
position 0
Automatic headlamp mode
GWARNING
When th elight switch is set to Ã,thelow-
beam headlamps may no tbeswitched on
automaticall yifthere is fog ,sno woro ther
causes of poor visibilityd ue to theweather
conditionss uchasspray. Thereisar isk of an
accident.
In suchs ituations,tur nt he light switch to
L.
The automatic headlampf eature is only an aid.
The driver is responsible for th evehicle's light-
ing at all times.
à is thefavore dlight switch setting. The light
settin gisautomaticall yselecte daccording to
th eb rightnes softheambient light (exception:
poor visibilityd ue to weather conditionss uchas
fog ,sno wors pray):
RSmartKey in position 1in th eignition lock: the
parking lamps are switched on or off auto-
maticall ydependingont hebrightnes softhe
ambient light.
RWitht heengine running: if you have activated
th ed aytime runnin glamps function via the
on-board computer, th edaytime running
lamps or th eparking lamps and th elow-beam
headlamps are switched on or off automati-
cally dependingont hebrightnes softheambi-
ent light.
XTo switch on automatic headlamp mode:
tur nthe light switch to Ã.
Only for Canada:
The daytime runnin glamps improve th evisibility
of your vehicle durin gthe day. The daytime run-
nin glamps function is required by law in Can-
ada. It canno tthe refore be deactivate d.
When t

h ee ngine is runnin gand th evehicle is
stationary: if you mov ethe selecto rleve rfro ma
driv eposition to P,thedaytime runnin glamps/
low-beam headlamps go out after three
minutes.
When th eengine is running, th evehicle is sta-
tionar yand in bright ambient light:ify ou turnthe
light switch to T,thedaytime runnin glamps
and parking lamps switch on.
If th eengine is runnin gand you tur nthe light
switch to L,themanual settings tak eprec-
edence ove rthe daytime runnin glamps.
USA only:
Exterior lighting93
Lightsa nd windshield wipers
Z

The daytime runninglamps improve the visibility
of your vehicle during the day. To do this, the
daytime runnin glamps function must be
switched on using the on-board computer
(
Ypage 172).
If the engine is runnin gand you turn the light
switch to TorL,t he manual settings
take precedenceo ver the daytime running
lamps.
Low-beam headlamps
GWARNING
When the light switch is set to Ã,the low-
beam headlamps may not be switched on
automatically if there is fog, snow or other
causes of poor visibility due to the weather
conditions such as spray. There is arisk of an
accident.
In such situations, turn the light switch to
L.
Even if the light sensor does not detect that it is
dark, the parking lamps and low-beam head-
lamps switch on when the ignition is switched on and the light switch is set to the Lposition.
This is aparticularly useful function in the event
of rain and fog.
XTo switch on the low-beam headlamps:
turn the SmartKey in the ignition lock to posi- tion 2or start the engine.
XTurn the light switch to L.
The green Lindicator lamp in the instru-
ment cluster lights up.
Rear fog lamp
The rear fog lamp improves visibility of your
vehicle for the traffic behind in the event of thick
fog. Please take noteoft he country-specific
regulations for the use of rear fog lamps.
XTo switch on the rear fog lamps: turn the
SmartKey to position 2in the ignition lock or
start the engine.
XTurn the light switch to LorÃ.
XPress the Rbutton.
The yellow Rindicator lamp in the instru-
ment cluster lights up.
XTo switch off the rear fog lamp: press the
R button.
The yellow Rindicator lamp in the instru-
ment cluster goes out.
Parking lamps
!If the battery charge is very low, the parking
lamps or standin glamps are automatically
switched off to enable the next engine start.
Always park your vehicle safely and suffi-
ciently lit according to legal standards. Avoid
using the parking lamps Toveraperiod of
several hours. If possible, switch on the right-
hand X or left-hand Wstandin glamp.
XTo switch on: turn the light switch to T.
The green Tindicator lamp in the instru-
ment cluster lights up.
Standing lamps
Switching on the standin glamps ensures the
corresponding side of the vehicle is illuminated.
XTo switch on the standing lamps: the
SmartKey is not in t
he ignition lock or it is in
position 0.
XTurn the light switch to W(left-han dside of
the vehicle) or X(right-hand side of the
vehicle).
Combination switch
:High-beam headlamps
;Turn signal, right
=High-beam flasher
?Turn signal, left
XTo indicate briefly: press the combination
switch briefly to the pressure point in the
direction of arrow ;or?.
The corresponding turn signal flashes three
times.
XTo indicate: press the combination switch
beyond the pressure point in the direction of
arrow ;or?.
94Exterior lighting
Lights and windshield wipers

XTo switchonthe high-beam headlamps:
turn the light switch to LorÃ.
XPress the combinatio nswitch beyond the
pressure point in the direction of arrow :.
In the Ãposition, the high-bea mhead-
lamps are onlys witched on when it is dark and
the engine is running.
The blue Kindicator lamp in the instru-
ment cluster lights up when the high-beam
headlamps are switched on.
XTo switc hoff the high-beam headlamps:
move the combinatio nswitch back to its nor-
malp osition.
The blue Kindicator lamp in the instru-
ment cluster goe sout.
Hazard warning lamps
XTo switc honthe hazard warning lamps:
press button :.
All turn signals flash. If yo unow switch on a
turn signalu sing the combinatio nswitch ,only
the turn signall ampont he corresponding
side of the vehicl ewillf lash.
XTo switc hoff the hazard warning lamps:
press button :.
The hazard warning lamps automaticall yswitch
on if:
Ran ai rbag is deployed or
Rthe vehicl edecelerates rapidly from aspeed
of above 45 mph (70 km/h )and come stoa
standstill
The hazard warning lamps switch off automati-
cally if the vehicl ereachesas peed of above
6m ph (10 km/h )again afteraf ullb rake appli-
cation.
iThe hazard warning lamps stil lope rate if the
ignition is switched off.
Cornerin glight function
The cornering light functio nimprove sthe illu-
minatio nofthe roa doveraw idea ngle in the
direction yo uare turning, enabling better visi-
bility in tight bends, for example. The cornering
light functio ncan onlybea ctivatedwhent he
low-bea mheadlamps are switched on.
Active:
Rif yo uare driving at speed sbelow 25 mph
(40 km/h )and switch on the turn signalo r
turn the steering wheel
Rif yo uare driving at speed sbetween 25 mph
(40 km/h )and 45 mph (70 km/h )and turn
the steering wheel
The cornering lamp mayr emainlitfor ashort
time ,but is automaticall yswitched off afte rno
more thant hreem inutes.
Cornerin glight functio nwitht rafficc ircle
function:
The cornering light functio nisa ctivate donboth
side sbefore entering atraffic circle throug han
evaluation of the current GP Sposition of the
vehicle. It remains active unti lafte rthe vehicle
hasl eftt he traffic circle .Inthisw ay,pedes trians
crossing the road, for example, are illuminated
by your vehicl eingoodt ime.
Active light function
The active light functio nisas ystem thatm oves
the headlamps according to the steering move-
ments of the front wheels .Inthisw ay,relevant
areas remai nillum inated whil edriving .This
allows yo utoidentify pedestrians ,cyclists and
animals.
Active: when the lights are switched on.
Vehicles with Lane Keeping Assist: the active
light functio nevaluate sthe course of the lane in
which yo uare driving and pre-emptively con-
trol sthe active light function.
Adaptiv eHighbeam Assist
General notes
Yo uc an us ethisf unctio ntoset the headlamps
to change between lo wbeama nd high beam
automatically. The system recognizes vehicles
with thei rlights on, either approaching from the
opposite direction or traveling in front of your
Exterior lighting95
Lights and windshield wiper s
Z

vehicle, and consequently switches the head-
lampsfrom high beamtol ow beam.
The system automatically adapts the low-beam
headlamp range depending on the distance to
the other vehicle. Once the system no longer
detects any other vehicles, it reactivates the
high-beam headlamps.
The system' soptical sensor is located behind
the windshieldn ear the overheadc ontrol panel.
Important safety notes
GWARNING
Adaptive Highbeam Assist does not recognize
road users:
Rwho have no lights, e.g. pedestrians
Rwho have poor lighting, e.g. cyclists
Rwhos elighting is blocked ,e.g. by abarrier
On very rare occasions, Adaptive Highbeam
Assist may fail to recognize other road users
that have lights, or may recognize them too
late. In this, or in similar situations, the auto-
matic high-beam headlamp swilln ot be deac-
tivated or wil lbeactivated regardless. There is
ar isk of an accident.
Always carefully observe the traffic conditions
and switch off the high-beam headlamp sin
good time.
Adaptive Highbeam Assist cannot take into
account road ,weather or traffic conditions.
Adaptive Highbeam Assist is only an aid .You are
responsible for adjusting the vehicle's lighting
to the prevailing light, visibility and traffic con-
ditions.
In particular, the detection of obstacles can be
restricted if there is:
Rpoor visibility, e.g. due to fog, heavy rain or
snow
Rdirt on the sensors or the sensors are
obscured
Switching Adaptive Highbeam Assist
on/off
XTo switch on: turn the light switch to Ã.
XPress the combination switch beyond the
pressure point in the directio nofarrow:.
The _ indicator lamp in the multifunction
display lights up when it is dark and the light
sensor activates the low-beam headlamps.
If you are driving at speeds above approx-
imatel y16m ph (25 km/h):
The headlamp range is set automatically
depending on the distance between the vehi-
cle and other road users.
If you are driving at speeds above approx-
imatel y19m ph (30 km/h )and no other road
users have been detected:
The high-beam headlamp sare switched on
automatically. The Kindicator lamp in the
instrument cluster als olights up.
If you are driving at speeds belowa pprox-
imatel y16m ph (25 km/h) or other road users
have been detected or the road sare ade-
quately lit:
The high-beam headlamp sare switched off
automatically. The Kindicator lamp in the
instrument cluster goes out. The _indi-
cator lamp in the multifunction display
remains lit.
XTo switch off: move the combination switch
back to its normal position or move the light
switch to another position.
The _ indicator lamp in the multifunction
display goes out.
96Exterio rlighting
Lights and windshield wipers

Interior lighting
Overview of interior lighting
Overhead control panel
:
pSwitches th eleft-han dreading lamp
on/off
;| Switches th eautomatic interio rlight-
ing control on/off
=p Switches th eright-hand reading lamp
on/off
?c Switches th einterio rlighting on/off
Interior lighting control
General notes
In order to preven tthe vehicle's battery from
discharging ,the interio rlighting function sare
automatically deactivated after som etime
unless th eSmartKey is in position 2in th eigni-
tion lock.
The color and brightness of th eambien tlighting
are set usin gthe multimedia system
(
Ypage 172).
Automati cinterior lighting control
XTo switch on/off: press the| button.
When th eautomatic interio rlighting control is
activated, th ebutto nisf lushw itht he over-
head control panel.
The interio rlighting automatically switches on if
you:
Runlock th evehicl e
Ropen adoor
Rremove th eSmartKey from th eignition loc k
The interio rligh tisa ctivated for ashort while
when th eSma rtKey is remove dfromt heignition lock. You can activat
ethisd elaye dswitch-off
usin gthe on-board computer (
Ypage 173).
Replacingbulbs
Important safety notes
Halogen bulbs
GWARNIN G
Bulbs, lamp sand connectors can get ver yhot
when operating .Ifyou chang eabulb, you
could burn yourself on these components.
Ther eisar iskofi njury.
Allow these component stocooldown before
changing abulb.
Do no tuse ab ulb that has been dropped or if it s
glass tub ehas been scratched.
The bulb may explod eif:
Ryou touch it
Rit is hot
Ryou dro pit
Ryou scratch it
Only operate bulbs in enclosed lamp sdesigned
for that purpose .Onlyi nstal lspar ebulbs of th e
sam etypea nd th especifie dvoltage.
Mark sont heglass tub ereduce th eservic elife
of th ebulbs .Don ottouch th eglass tub ewith
your bare hands. If necessary, clean th eglass
tub ew hen cold wit halcohol or spirit and rub it
off wit halint-free cloth .
Protect bulbs from moisture during operation .
Do no tallow bulbs to come int ocontac twith
liquids.
Replac eonlyt he bulbs listed (
Ypage 98).
Hav ethe bulbs that you canno treplace yourself
changed at aqualified specialist workshop.
If you require assistanc echanging bulbs ,con -
sult aqualified specialist workshop.
If th enew bulb still does no tligh tup, consult a
qualified specialist workshop.
Bulb sand lamp sare an important aspect of
vehicl esafety. You must therefor emakes ure
that these function correctl yatall times
.Ha
v e
th eh eadlamp setting checke dregularly.
Replacingb ulbs97
Lightsand windshield wipers
Z

Vehicles with LEDheadlamps
The front and rea rlight cluster sofyourv ehicle
are equipped with LED light bulbs. Do not
replace the bulb syours elf. Contact aquali fied
specialist workshop which hast he necessary
specialist knowledge and tool stocarry outt he
work required.
Overview: changin gbulbs/bulb types
Haloge nheadlamps
:
Low-beam headlamp :H755W
;High-beam headlamp :H755W
Changingthe fron tbulbs
Removing/mounting the coveri nthe
fron twheel housing
XTo remove: switch off the lights.
XTurn the front wheels inwards.
XSlide cover:up and remove it.
XTo install: reinsertcover :and slid eitdown
unti lite ngages.
Low-beam headlamps (haloge nhead-
lamps)
XRemove the cove rinthe front whee lhousing
(Ypage 98).
XTurn housing cover :counter-clockwis eand
pull it out.
XPush bar ;upwards.
XRemove connector =with the bulb.
XPull bulb outofc onnector=.
XInsert the new bulb into connector =and
place in the bracket of bar ;.
Make sure thatt he bulb is in an upright posi-
tion.
XPush bar ;downwards.
XAttach housing cover :and turn it clockwise
unti lite ngages.
XReplace the cove rinthe front whee lhousing
(Ypage 98).
High-beam headlamps (haloge nhead-
lamps)/corneringl amps (Bi-Xenon
headlamps)
XSwitch off the lights.
XOpe nthe hood.
98Replacin gbulbs
Lights and windshield wiper s