2018 MERCEDES-BENZ SLC clock

X
To deactivate: press and hol db ut ton C for
abou tf iv es econds unti lat one sounds.X
To activate: press and hol db ut ton D for
abou tf iv es econds unti lat one sounds.
If yo up ress one of the two buttons and do not
hea rat one, the relevant setting ha sa lr eady
been selected.
The vehicl eisl oc ked automaticall yw he nt he
ignition is switched on and the wheels are turn-
ing.
Yo uc ould therefore lock yoursel fo ut if:R
the vehicl eisb ei ng pushed.R
the vehicl eisb ei ng towed.R
the vehicl eisonar olle rd yn amometer.
Yo uc an also switch the automatic locking func-
tio nona nd off using the on-board computer
( Y
page 173).
Unlocking/lockin gt he driver's door
using the mechanical key
i If yo uw an ttoc entrall yl oc kt he vehicl eu si ng
the mechanical key ,b egin by pressing the
locking button for the interio rl oc king mech-
anism whil et he driver's door is open. Then
lock the driver's door using the mechanical
key.
X
To unlock: turn the mechanical key counter-
clockwise as far as it will go to position G .X
To lock: turn the mechanical key clockwise as
far as it will go to position G .
If yo uu se the mechanical key to unlock and
open the driver's door, the anti-thef ta la rm sys-
tem will be triggered .S witch off the alarm
( Y
page 64). Trunk
Important safety notes
G WARNING
If objects, luggage or load sa re not secured or
not secured sufficiently ,t hey could slip ,t ip
ove rorbef lung around and thereb yh it vehicle
occupants. There is ar is kofi njury ,p ar ticu-
larly in the event of sudden braking or as ud -
de nc hange in direction.
Alway ss tor eo bj ects so tha tt hey canno tb e
flung around .S ecure objects, luggage or
load sa gain st slipping or tipping before the
journey.
! The trunk li ds wi ng su pwar ds when opened.
Therefore, make sure tha tt her eiss uf ficient
clearance above the trunk lid.
! Onl yc lose the trunk once the roo fisl owere d
completely. Otherwise, yo uc ould damag et he
roof.
If yo uc lose the trunk li db ef ore the roo fi s
lowered completely, the loading ai ds wi tch
lights up and aw ar ning tone sounds.
The opening dimensions of the trunk li dc an be
found in the "Vehicle data" section
( Y
page 295).
Do not leave the SmartKey in the trunk. You
could otherwise lock yoursel fo ut .
The trunk li dc an be: R
opened/close df rom outside R
opene da ut omaticall yf rom outsideR
locked separately R
opene dw it ht he emergency release button R
unlocke dw it ht he mechanical key
Yo us houl dp referabl yp la ce luggage or load si n
the trunk.72
Trunk
Opening and closing

Opening/closing from outside
Opening X
Press the 6 button on the SmartKey.X
Pull handle C .X
Raise the trun kl id.
Closing
X
Pull the trun kl id down using recess C .X
Lock the vehicle if necessary using the 7
button on the key or with KEYLESS-GO.
If KEYLESS-GO detects aS martKey in the trunk,
it does not lock.
Locking the trunk separately You can lock the trun ks eparately. If you then
unlock the vehicle centrally, the trun kr emains
locked and cannot be opened. X
Close the trun kl id.X
Take the mechanical key out of the SmartKey
( Y
page 67). X
Inser tt he mechanical key into the trun kl id
lock as far as it will go. X
Turn the mechanical key clockwise from posi-
tion G to position H .X
Remove the mechanical key. X
Inser tt he mechanical key into the SmartKey.
Unlocking the trunk (mechanical key)
! The trun kl id swings upwards when opened.
Therefore, make sure that there is sufficient
clearanc ea bove the trun kl id.
If the trun kc annot be unlocked with the Smart-
Key or KEYLESS-GO, use the mechanical key.
If you use the mechanical key to unlock and
open the trun kl id, the anti-thef ta larm system
will be triggered. Switc ho ff the alarm
( Y
page 64). X
Take the mechanical key out of the SmartKey
( Y
page 67). X
Inser tt he mechanical key into the trun kl id
lock as far as it will go.
X
Turn the mechanical key from position G
counter-clockwise as far as it will go to posi- Trunk 73
Opening and closing Z

specialist workshop which has the necessary
specialist knowledge and tools to carry out the
work required.
Overview :c hanging bulbs/bulb types
Halogen headlamps
C
Low-beam headlamp: H7 55 WD
High-beam headlamp: H7 55 W
Changing the front bulbs
Removing/mounting the cove rint he
front wheel housing
X
To remove: switch off the lights.X
Turn the front wheels inwards. X
Slide cover C up and remove it.X
To install: reinsert cover C and slide it down
until it engages. Low-beam headlamp s( haloge nh ead-
lamps) X
Remove the cover in the front wheel housing
( Y
page 100). X
Turn housing cover C counter-clockwise and
pull it out. X
Push bar D upwards. X
Remove connector

X
Turn housing cover C counter-clockwise and
pull it out. X
At the bulb holder, push the bulb upwards,
disconnect it and pull it out of bulb holder D .X
Insert the new bulb into bulb holder D at the
top, push it down and secure it in place. X
Attach housing cover C and turn it clockwise
until it engages.
Side marker lamp s( halogen head-
lamps) Due to their location, have the bulbs in the side
marker lamp changed at aq ualified specialist
workshop.
Windshield wipers
Switching the windshield wipers
on/off
! Do not operate the windshield wipers when
the windshield is dry, as this could damage
the wiper blades. Moreover, dust that has col-
lected on the windshield can scratc ht he glass
if wiping takes place when the windshield is
dry.
If it is necessary to switch on the windshield
wipers in dry weather conditions, alway su se
washer fluid when operating the windshield
wipers.
! If the windshield wipers leave smears on the
windshield after the vehicle has been washed
in an automatic car wash, wax or other resi-
dues may be the reason for this. Clean the
windshield using washer fluid after washing
the vehicle in an automatic car wash.
! Intermittent wiping with rain sensor: due to
optical influences and the windshield becom-
ing dirty in dry weather conditions, the wind-
shield wipers may be activated inadvertently.
This could then damage the windshield wiper
blades or scratc ht he windshield.
For this reason, you should alway ss witch off
the windshield wipers in dry weather. Combination switch
G
? Windshield wiper offH
b Intermittent wipe, low (rain sensor set
to low sensitivity) I
c Intermittent wipe, high (rain sensor
set to high sensitivity) J

ECO start/stop function During automatic engine switch-off ,t he climate
control system only operate satar educed capa-
city. If you require full climate control capacity,
th eE CO start/sto pf unction can be deactivated
by pressin gt he ECO button ( Y
page 120).
Operating th ec limat ec ontrol sys-
tems
Activating/deactivatin gc limat ec on-
trol
General notes When th ec limate control is switched off ,t he air
supply and air circulation are also switched off.
The windows coul df og up. Therefore, switch off
climate control only briefly
i Activate climate control primarily usin gt he
X butto n( Y
page 109).
Air-conditioning system X
Turn th eS ma rtKey to position H in th ei gni-
tio nl oc k( Y
page 116).X
To switch on: tur na irflow control k clock-
wise to th ed esired position (excep tp osition
0 )( Y
page 104).X
To switch off: tur na irflow control k coun-
ter-clockwise to position 0 ( Y
page 104).
3-zone automatic climat ec ontrolX
Turn th eS ma rtKey to position H in th ei gni-
tio nl oc k( Y
page 116).X
To switch on: pres st he X button.
The indicator lamp in the X button lights
up. Airflow and air distribution are set to auto-
matic mode.
or X
Press the x button.
The indicator lamp in the x button goes
out .T he previously selecte ds ettings are
restored. X
To switch off: pres st he x button.
The indicator lamp in the x button lights
up. Switching cooling with air dehumidi-
fication on/off
General notes If you deactivate th e" Coolin gw ith air-dehumid-
ification" function ,t he air inside th ev ehicle will
no tbec ooled. The air inside th ev ehicle will also
no tbed ehumidified. The windows can fog up
mor eq uickly. Therefore, deactivate th ec ooling
with air-dehumidification function only briefly.
The "Coolin gw ith air dehumidification "f unction
is only availabl ew hen th ee ngine is running. The
air inside th ev ehicle is cooled and dehumidified
according to th et em peratur es elected.
Condensation may drip from th eu ndersid eo f
th ev ehicle when it is in cooling mode. This is
normal and no tas ign that there is am alfunc-
tion.
Activating/deactivating X
To activate: pres st he Z or V button.
The indicator lamp in the Z or V button
light su p. X
To deactivate: pres st he Z or V but-
ton.
The indicator lamp in the Z or V button
goes out .T he "Coolin gw ith air dehumidifica-
tion" function has ad elayed switch-off fea-
ture.108
Operating th ec limate control systems
Climate control

i If you activate the residual heat function at
high temperatures, only the ventilation wil lb e
activated. The blower runs at mediu ms peed.X
To deactivate: press the K or V but-
ton.
The indicator lamp in the K or V button
goes out.
Residua lh eat is deactivated automatically:R
after approximately 30 minutes R
when the ignition is switched on R
if the battery voltage drops
Setting the air vents
Important safety notes
G WARNING
Very hot or very cold air can flow from the air
vents. This could resul tinb urns or frostbite in
the immediate vicinity of the air vents. There
is ar isk of injury.
Make sure that all vehicle occupants always
maintain as ufficient distance to the air out-
lets. If necessary ,r edirect the airflow to
another area of the vehicle interior.
G WARNING
When AIRSCARF is switched on, very hot air
can flow from the vents in the head restraints.
This could resul tinb urns in the immediate
vicinity of the air vents. There is ar isk of injury.
Reduce the heater outpu tb efore it becomes
too hot.
In order to ensure the direct flow of fresh air
through the air vents into the vehicle interior,
please observe the following notes: R
keep the air inlet grill eont he hood and in the
engine compartment on the front-passenger
side free of blockages, such as ice, snow or
leaves. R
never cover the air vents or air intake grilles in
the vehicle interior.
i You can move the adjusters for the air vents
verticall yorh orizontally to set the direction of
the airflow. i For optimal climate control in the vehicle,
open the air vents completely and set the
adjusters to the central position.
Setting the center air vents X
To open the center air vents: turn the
adjuster in one of center air vents C counter-
clockwise. X
To close the center air vents: turn the
adjuster in one of center air vents C clock-
wise until it engages.
Setting the side air vents
C
Side window defroster vent
D
Side air vent X
To open as ide air vent: turn the adjuster in
the side air vent D to the left.X
To close as ide air vent: turn the adjuster in
the side air vent D to the right until it
engages.Setting the air vents 113
Climate control Z

Important safety notes
G WARNIN G
If you operate information systems and com-
munication equipmen ti ntegrate dint he vehi-
cle when driving ,y ou may be distracte df ro m
th et ra ffic situation .Y ou could also lose con-
trol of th ev ehicle. Ther eisar is kofana cci-
dent.
Only operate this equipmen tw hen th et ra ffic
situation permits. If you are no ts ur et ha tt hi s
is possible ,p ark th ev ehicl ep ayin ga ttention
to traffic condition sa nd operate th ee quip-
men tw hen th ev ehicl eiss ta tionary.
You must observ et he legal requirements for th e
country in whic hy ou are currentl yd riving when
operating th eo n-bo ard computer.
G WARNIN G
If th ei nstrumen tc luste rh as faile dorm al-
functioned, you may no tr ecognize function
restriction sins ystems relevan ttos afety. The
operating safet yofy our vehicl em ay be
impaired .T her eisar is kofana ccident.
Drive on carefully. Hav et he vehicl ec hecked
at aq ualified specialist workshop immedi-
ately.
The on-board computer only shows message so r
warning sf ro mc ertai ns ystems in th em ultifunc-
tion display. You should therefor em ak es ur e
your vehicl eiso perating safely at all times .
If th eo perating safet yofy our vehicl ei s
impaired ,p ull ove rass oo nasitiss af etodos o.
Contac taq ualified specialist workshop.
Fo rano verview, see th ei nstrumen tp anel illus-
tration ( Y
page 32).
Display sa nd operation
Instrumen tc luster lighting
The lighting in th ei nstrumen tc luster, in th ed is-
plays and th ec ontrols in th ev ehicl ei nterior can
be adjusted usin gt he brightness control knob.
The brightness control knob is locate dont he
botto ml ef toft he instrumen tc luste r
( Y
page 32). X
Turn th eb rightness control knob clockwise or
counter-clockwise.
If you tur nt he ligh ts witch ( Y
page 95 )t ot he
X , ` or X position ,t he brightness
will depend upon th eb rightness of th ea mbi -
en tl ight.
The ligh ts ensor in th ei nstrumen tc luste r
automatically control st he brightness of th e
multifunction display. In daylight, th ed isplays
in th ei nstrumen tc luste ra re no ti lluminated.
Speedometer with segments The segments in th es peedometer indicat e
whic hs pee dr ange is available. R
Cruis ec ontro la ctivated ( Y
page 138):
The segments ligh tupf ro mt he store ds pee d
to th em aximum speed. R
Distanc eP ilot DISTRONI Cisa ctivated
( Y
page 140):
On eort wo segments in th es et spee dr ange
ligh tu p. R
Distanc eP ilot DISTRONI Cd etects av ehicl ei n
fron tm oving mor es lowly than th es to re d
speed:
The segments between th es pee doft he vehi-
cle in fron ta nd th es to re ds pee dl igh tu p.
Tachometer
! Do no td riv eint he overrevving range, as this
could damag et he engine.
The red ban dint he tachometer indicates th e
engine's overrevving range.
The fuel suppl yisi nterrupted to protect th e
engin ew hen th er ed ban disr eached.
Outsid et emperatur ed isplayYou should pay special attention to road condi-
tion sw hen temperatures are aroun df re ezing
point.
Bea rinm in dt ha tt he outside temperature dis-
play indicates th et em perature measured and
does no tr ecord th er oad temperature.
The outside temperature display is in th em ulti-
function display ( Y
page 165).
Ac ha ng eint he outside temperature is shown in
th em ultifunction display after ad elay.Display sa nd operation 163
On-boar dc omputer and displays Z

rubbish. They must be col-
lected separately and dis-
posed of in an environmen-
tall yr esponsible recycling
system.
Dispose of batterie sina n
environmentally responsi-
ble manner. Take dis-
charge db atterie stoaq uali-
fied specialist workshop or
to ac ollection point for
used batteries.
! Have the battery checked regularl yata
qualified specialist workshop.
Observe the service interval sint he Mainte-
nance Booklet or contact aq ualified specialist
workshop for more information.
! Always have work on batterie sc arrie do ut at
aq ualified specialist workshop.
Shoul di t, in exceptiona lc ircumstances, be
absolutel yn ecessary to disconnect the 12-
volt battery yourself, please observe the fol-
lowing: R
Secure the vehicl etop revent it from rolling
away. R
Switch off the ignition. R
Disconnect the negative terminal first and
then the positive terminal.
The transmission is locked in position ]
after disconnecting the battery.
After the work has been done, install the bat-
tery and replace the cover of the positive ter-
minal clamp firmly.
Comply with safety precautions and take pro-
tective measures when handling batteries.
Ris kofe xplosion.
Fire, open flame sa nd smoking are
prohibited when handling the bat-
tery. Avoid creating sparks.
Battery acid is caustic. Avoid contact
with skin, eye sorc lothing.
Wea rs uitable protective clothing,
especially gloves, apro na nd face-
guard. Rinse any acid spills immediately
with clea rw ater. Contact ap hysician
if necessary.
Wea re ye protection.
Keep children away.
Observe this Operator's Manual.
For safety reasons, Mercedes-Benz recom-
mends that you only use batterie sw hich have
been tested and approved for you rv ehicl eb y
Mercedes-Benz. These batterie sp rovide
increase di mpact protection to prevent vehicle
occupants from suffering acid burns should the
battery be damaged in the event of an accident.
In order for the battery to achieve the maximum
possible service life ,itm ust alway sbes uffi-
ciently charged.
Like other batteries, the vehicl eb attery may
discharge over time if you do not use the vehicle.
In this case, have the battery disconnected at a
qualified specialist workshop .Y ou can also
charge the battery with ac harge rr ecommended
by Mercedes-Benz. Contact aq ualified special-
ist workshop for further information.
Have the battery condition of charge checked
more frequently if you use the vehicl em ainl yf or
short trips or if you leave it standing idl ef or a
lengthy period. Consult aq ualified specialist
workshop if you wis htol eave you rv ehicle
parked for al ong perio doft ime.
Remove the SmartKey if you park the vehicle
and do not require any electrica lc onsumers.
The vehicl ew il lt hen use very little energy ,t hus
conserving battery power.
If the powe rs upply has been interrupted ,e .g. if
you reconnect the battery ,y ou wil lh ave to:R
reset the function for automatically folding
the exterior mirrors in/out by folding the mir-
rors out once ( Y
pag e9 1)R
set the clock
On vehicles with am ultimedia system, the
time is set automatically.252
Battery (vehicle)
Breakdown assistance