2017 MERCEDES-BENZ SLC-Class air condition

Setting the air distribution
Air-conditioning system
XTurn the SmartKey to position 2in the ignition
lock (Ypage 115).
XPress one or more of the P,O, ¯
buttons.
The correspondingi ndicator lamp lights up
briefly.
The following air distribution settings can be
selected:
¯ Directsa ir through the defroster vents
O Directsa ir through the footwell air vents
P Directsa ir through the center and side air
vents
iYou can also activate several air distribution
settings simultaneously. To do this, press
multiple air distribution buttons. The air is
then directed through various vents.
3-zone automatic climate control
XTurn the SmartKey to position 2in the ignition
lock (Ypage 115).
XPress the _button repeatedly until the
desired symbol appears in the display.
The following air distribution settings can be
selected:
P Directsa ir through the center and side air
vents
O Directsa ir through the footwell air vents
S Directsa ir through the center, side and
footwell vents
¯ Directsa ir through the defroster vents
b Directst he airflow through the defroster,
center and side air vents( Canada only)
a Directsa ir through the defroster and
footwell vents
_ Directst he airflow through the defroster
vents, the center and side air ventsa s
well as the footwell air vents( Canada
only)
iRegardless of the air distribution setting,
airflow is always directed through the side air
vents. You can only close the side air vents, by fully closing the adjuster on the side air vents
(
Ypage 112).
Setting the airflow
Air-conditioning system
XTurn the SmartKey to position 2in the ignition
lock (Ypage 115).
XTo increase or reduce: turn controlC
clockwise or counter-clockwise (Ypage 103).
3-zone automatic climate control
XTurn the SmartKey to position 2in the ignition
lock (Ypage 115).
XTo increase or reduce: press theKor
I button.
Switching the ZONE function on/off
This function is only available with 3-zone auto-
matic climate control on vehicles for Canada.
XTo switch on: press theábutton.
The indicator lamp in the ábutton lights
up. The temperature settingf or the driver's
side is not adopted for the front-passenger
side.
XTo switch off: press theábutton.
The indicator lamp in the ábutton goes
out. The temperature settingf or the driver's
side is adopted for the front-passenger side.
Defrosting the windshield
General notes
You can use this function to defrost the wind-
shield or to defrost the inside of the windshield
and the side windows.
Switch off the "Windshield defrosting" function
as soon as the windshield is clear again.
Switching the "windshield defrosting"
function on or off
XTurn the SmartKey to position 2in the ignition
lock (Ypage 115).
XTo switch on: press the¬button.
The indicator lamp in the ¬button lights
up.
Operating the climate control systems109
Climatec ontrol

The climate control system switches to the
following functions:
Rhigh airflow
Rhigh temperature
Rair distribution to the windshield and front
side windows
Rair-recirculation mode off
XTo switch off:press the¬button.
The indicator lamp in the ¬button goes
out. The previously selected settings are
restored. Air-recirculation mode remains
deactivated.
or
X3-zone automatic climate control: press the
à button.
The indicator lamp in the ¬button goes
out. Airflow and air distribution are set to
automatic mode.
MAX COOL maximum cooling
The MAX COOL function is only availableinv ehi-
cles for the USA.
MAX COOL is only operational when the engine
is running.
XTo activate: press theÙbutton.
The indicator lamp in the button lights up.
XTo deactivate: press theÙbutton.
The indicator lamp in the button goes out. The
previously selected settings are restored.
When you activate MAX COOL, climate control
switches to the following functions:
Rmaximum cooling
Rmaximum airflow
Rair-recirculation mode on
Defrosting the windows
Windows fogged up on the inside
XActivate the ¿orÁ cooling with air
dehumidification function.
XDual-zon eautomatic air conditioning: acti-
vate the Ãmode button.
XIf the windows continue to fog up, activate the
¬ "Windshield defrosting" function.
iYou should only select this setting until the
windshield is clear again.
Windows fogged up on the outside
XActivate the windshield wipers.
XAir-conditioning system: press the Por
O button.
XDual-zon eautomatic air conditioning: press
the _ button until the PorO sym-
bol appears in the display.
iYou should only select this setting until the
windshield is clear again.
Rear window defroster
General notes
The rear window defroster has ahigh current
draw. You should therefor eswitch it off as soon
as the rear window is clear. Otherwise, the rear window defroster switches off automatically
after several minutes.
If the battery voltage is too low, the rear window
defroster may switch off.
Activating/deactivating
XTurn the SmartKey to position 2in the ignition
lock (Ypage 115).
XPress the ¤button.
The indicator lamp in the ¤button lights
up or goes out.
110Operating the climate control systems
Climate control

ECO start/stop function
Introduction
The ECO start/sto pfunction switches the
engine off automaticall yifthevehicle is stopped
unde rcertain conditions.
The engine start sautomaticall ywhen th edriver
want stop ull away again.T he ECO start/stop
function therebyh elps you to reducethe fuel
consumptio nand emissionsofy our vehicle.
Important safety notes
GWARNING
If th eengine is switched off automaticall yand
you exi tthe vehicle ,the engine is restarted
automatically. The vehicle may begin moving.
Thereisar isk of accidenta nd injury.
If you wish to exi tthe vehicle ,always tur noff
th ei gnition and secure th evehicle against
rolling away.
General notes
:ECO start/sto pdisplay
The ECO start/sto pfunction is activated when-
ever you switch on th eengine usingt heSmart-
Key or th eStart/Sto pbutton.
If th eengine has been switched off automati-
cally by th eECO start/sto pfunction,t heè
ECO symbol is shownint hemultifunction dis-
play.
Automatic engine switch-off
If th evehicle is braked to astandstil lin D or N,
th eE CO start/sto pfunction switches off the
engine automatically. The ECO start/sto
pfunction is operational
when:
Rth ei ndicator lamp in th eECO butto nislit
green.
Rth eo utside temperatur eiswithin th erange
that is suitable for th esystem.
Rthee ngine is at normal operatin gtem pera-
ture.
Rth es et temperatur efor th evehicle interior
has been reached.
Rth eb attery is sufficiently charged.
Rthes ystem detect sthatthe windshield is not
fogged up when th eair-conditioning system is
switched on.
Rth eh ood is closed.
Rthed river'sd oor is closed and th edriver's
seat belt is fastened.
All of th evehicle's systems remain active when
th ee ngine is stopped automatically.
Automatic engine switch-off can tak eplacea
maximum of four times in arow (initial stop, then
three subsequents tops).
The HOLD function can be activated if the
engine has been switched off automatically. It is
then no tnecessaryt ocontinue applyingt he
brakes durin gthe automatic stop phase.W hen
you depress th eaccelerato rpedal, th eengine
start sautomaticall yand th ebraking effect of
th eH OLDf unction is deactivated.
Automatic engine start
The engine start sautomaticall yif:
Ryou switch off th eECO start/sto pfunction by
pressingt heECO button
Rin transmission position Dor Ntheb rake
pedal is released and th eHOLDfunction is not
active
Ryou depress th eaccelerato rpedal
Ryou engage reverseg earR
Ryou mov ethe transmission out of position P
Ryou switch to driveprogram S+
Ryou unfasten your seat belt or open th edriv-
er'sd oor
Rthev ehicle start storoll
Rtheb rak esystem requires this
Rthet em peratur einthevehicle interiord evi-
ate sfromt heset range
118Driving
Driving and parking

Rthe systemdetects moisture on the wind-
shiel dwhent he air-conditioning systemi s
switched on
Rthe battery's condition of charge is too low
Shiftin gthe transmission to position Pdoes not
start the engine.
Deactivatin goractivatin gthe ECO
start/sto pfunction
XTo deactivate: press ECO button :.
Indicato rlam p; goes out.
XTo activate: press ECO button :.
Indicato rlam p; lights up.
If indicator lamp ;is off ,the ECO start/stop
functio nhasbeen deactivated manuall yoras
the resul tofamalfunction. The engine will then
not be switched off automaticall ywhenthe vehi-
cle stops.
Driving119
Dr iving an dparking
Z

In addition to driving style, the actual consump-
tion is affected by other factors, such as:
Rload
Rtire pressure
Rcold start
Rchoice of route
Ractive electrical consumers
These factors are not include dinthe ECO dis-
play.
An economical driving style specially requires
driving at moderate engine speeds.
Achieving ahigher valu einthe categories
"Acceleration" and "Constant":
Robserve the gearshift recommendations.
Rdrive the vehicle in drive program Cor E.
On long journeys at aconstant speed,e .g. on the
highway, only the outer area for "constant" will
change.
The ECO display summarizes the driving style
from the start of the journey to its completion.
Therefore, there are more marked changes in
the outer area satthe start of ajourney. On lon-
ger journeys, there are fewer changes. For more
marked changes, perform amanua lrest
(
Ypage 167).
For more information on the ECO display, see
(
Ypage 166).
Braking
Important safety notes
GWARNING
If you shift down on aslippery road surface in
an attempt to increase the engine's braking
effect, the drive wheel scould lose their grip.
There is an increased danger of skidding and
accidents.
Do not shift down for additional engine brak-
ing on aslippery road surface.
Downhill gradients
!On long, steep gradients, you must reduce
the load on the brakes. To use engine braking,
shift to alowerg ear in good time. This helps
you to avoid overheating the brakes and wear-
ing them out excessively. When making use of the engine braking
effect, it is possible that
adrive wheel may not
turn for some time, e.g. in the case of sud-
denly changing or slippery road surface con-
ditions. This could cause damage to the drive
train. This type of damage is not covered by
the Mercedes-Benz warranty.
Change into alowerg ear in good time on long
and steep downhill gradients. This is especially
important if the vehicle is laden.
This also applies if you have activated cruise
control or Distance PilotD ISTRONIC.
Heavy and light loads
GWARNING
If you rest you rfoot on the brake pedalw hile
driving, the braking system can overheat. This increases the stopping distance and can even
cause the braking system to fail .There is a
risk of an accident.
Never use the brake pedalasaf ootrest. Never
depresst he brake pedala nd the accelerator
pedalatt he same time.
!Depressing the brake pedalc onstantly
results in excessive and premature wea rto
the brake pads.
If the brakes have been subjected to aheavy
load ,don ot stop the vehicle immediately ,but
drive on for ashort while. This allows the airflow
to cool the brakes more quickly.
Wet roads
If you have driven for along time in heavy rain
withou tbraking, there may be adelayed reac-
tion from the brakes when braking for the first
time. This may also occur after the vehicle has
been washed or driven through deep water.
You then have to depresst he brake pedalmore
firmly.M aintainagreater distance from the
vehicle in front.
After driving on awet road or having the vehicle
washed, brake firmly whil epaying attention to
the traffic conditions. This willw arm up the
brake discs, thereby drying them more quickly
and protecting them against corrosion.
136Driving tips
Driving and parking

Drivingonw et road s
Hydroplaning
If water has accumulated to acertai ndept hon
th er oads urface, there is adanger of hydro-
planin goccurring, eve nif:
Ryou drive at low speeds
Rthet ires hav eadequat etread dept h
Fo rthisr eason ,intheevent of heav yrain or in
condition sinwhichh ydroplaning may occur ,
you mus tdrive in th efollowin gmanner:
Rlowe ryour speed
Ravoid rut s
Ravoid sudden steerin gmovements
Rbrake carefully
Drivin gonflooded road s
!Do notdrive through floode dareas. Chec k
th ed ept hofa ny water befor edrivin gthrou gh
it .D rive slowly through standin gwater. Oth-
erwise ,water may ente rthe vehicle interio ror
th ee nginec om partment. Thi scan damage
th ee lectronic component sintheengin eor
th ea utomatic transmission. Water can also
be drawn in by th eengine's air suction nozzles
and this can cause engin edamage.
Winte rdrivin g
GWARNING
If you shift down on aslipper yroads urfac ein
an attempt to increase th eengine's braking
effect ,the drive wheels could los etheir grip.
There is an increase ddanger of skidding and
accidents .
Do no tshift down fo radditional engin ebrak-
in gonas lipperyroads urface.
GDANGER
If th eexhaus tpipe is blocke doradequat e
ventilation is no tpossible, poisonous gases
suc hasc arbon monoxide (CO) may ente rthe
vehicle. Thi sisthecase, e.g. if th evehicle
becomes trappe dinsnow. There is arisko f
fatal injury.
If you leav ethe engin eortheauxiliar yheatin g
running ,makes uret he exhaus tpipe and are a
around th evehicle are clear of snow. To
ensur eana dequat esupply of fresh air, ope na
window on th esideoft hevehicle that is no t
facin gintot he wind.
Hav eyour vehicle winter-proofed at aqualified
specialis tworkshop at th eonset of winter.
Drive particularly carefully on slipper yroads ur-
faces. Avoid sudden acceleration ,steerin gand
braking maneuvers .Donotuse cruise control.
If th evehicle threatens to skid or canno tbe
stopped when movin gatlow speed:
XShift th etransmissio ntoposition N.
The outsid etem perature indicator is no t
designed to serve as an ice-warnin gdevic eand
is therefore unsuitable fo rtha tp urpose.
Changes in th eoutsid etem perature are dis -
playe dafter ashort delay.
Indicated temperature sjusta bov ethe freezin g
poin tdon otguarantee that th eroads urfac eis
free of ice. The road may still be icy, especially in
wooded areas or on bridges. The vehicle could
skid if you fail to adapt your drivin gstyle. Always
adapt your drivin gstyle and drive at aspeed to
suit th eprevailin gweather conditions.
You should pay spe cia
l attention to road condi-
tion swhen temperature sare around freezin g
point.
Fo rm orei nformati on on drivin gwiths now
chains, see (
Ypage 257).
Fo rm orei nformat ion on drivin gwiths ummer
tires ,see (
Ypage 257).
Observ ethe note sint he"Winte roperation "sec-
tion (
Ypage 257).
Drivin gsystems
Cruis econtro l
General notes
Cruise contro lmaintain saconstan troa ds peed
fo ry ou. It brake sautomatically in order to avoid
exceedin gthe set speed. On lon gand steep
downhill gradients, especially if th evehicle is
laden, you mus tselec talowe rgear in goo dtim e.
By doin gso, you will mak euse of th ebraking
effect of th eengine. Thi srelieves th eload on th e
138Driving systems
Driving an dparking

To avoid damage to the vehicle, deactivate
Distance Pilot DISTRONIC and the HOLD
function in the following or similar situations:
Rwhen towing the vehicle
Rin the car wash
If you fail to adapt your driving style, Distance
Pilot DISTRONIC can neither reduce the risk of
an accident nor override the laws of physics.
Distance Pilot DISTRONIC cannot take into
account road, weather or traffic conditions. Dis-
tanc ePilot DISTRONIC is only an aid. You are
responsible for the distance to the vehicle in
front,f or vehicle speed, for braking in good time
and for staying in your lane.
Do not use Distance Pilot DISTRONIC:
Rin road and traffic conditions which do not
allow you to maintain aconstant speed, e.g. in
heavy traffic or on winding roads
Ron slippery road surfaces. Brakingora ccel-
erating could cause the drive wheels to lose
traction and the vehicle could then skid
Rwhen there is poor visibility, e.g. due to fog,
heavy rain or snow
Distance Pilot DISTRONIC may not detect nar-
row vehicles driving in front,e .g. motorcycles, or
vehicles driving on adifferent line.
In particular, the detection of obstacles can be
impaired if:
Rthere is dirt on the sensors or anything else
coveringt he sensors
Rthere is snow or heavy rain
Rthere is interferenc ebyother radar sources
Rthere are stron gradar reflections, for exam-
ple, in parking garages
If Distance Pilot DISTRONIC no longer detect sa
vehicle in front,D istance Pilot DISTRONIC may
unexpectedly accelerate to the speed stored.
This speed may:
Rbe too high if you are driving in afilter lane or
an exit lane
Rbe so high when driving in the right-hand lane that you overtak evehicles in the left-hand
lane
Rbe so high when driving in the left-hand lane
that you overtak evehicles in the right-hand
lane
If there is achange of drivers, advise the new
driver of the speed stored.
Cruise control lever
Cruise control lever
:
Stores the current speed or ahigher speed
;Setting aspecified minimum distance
=Storing the current speed or calling up the
last stored speed
?Stores the current speed or alower speed
ASwitching off Distance Pilot DISTRONIC
Activating Distance Pilot DISTRONIC
and storing, maintaining and calling up
as peed
Important safety notes
!When Distance Pilot DISTRONIC or the
HOLD function is activated, the vehicle
brakes automatically in certain situations.
To avoid damage to the vehicle, deactivate
Distance Pilot DISTRONIC and the HOLD
function in the following or similar situations:
Rwhen towing the vehicle
Rin the car wash
To activate Distance Pilot DISTRONIC, the fol-
lowing conditions must be fulfilled:
Rthe engine must be started. It may take up to
two minutes of driving before Distance Pilot
DISTRONIC is ready for use.
Rthe electric parking brake must be released.
RESP®must be active, but not intervening.
RActive Parking Assist must not be activated.
Rthe transmission must be in position D.
Rthe driver's door must be closed when you
shift fromPto Dor your seat belt must be
fastened.
Rthe front-passenger door must be closed.
Rthe vehicle must not skid.
142Driving systems
Driving and parking

Important safety notes
GWARNING
LaneK eepin gA ssist may no talways clearly
recognize lane markings.
In this case, LaneK eepin gA ssist may:
Rgiveanu nnecessaryw arning
Rnotg iveaw arning
Thereisar iskofana cciden t.
Always pay particula rattentio ntothetraff ic
situation and stay inlane ,inp articula rif
warned byLaneK eepin gA ssist.
GWAR NING
The LaneK eepin gA ssist warning does not
return th evehicle to th eoriginal lane .Therei s
ar iskofana cciden t.
You should always steer,b rakeora ccelerate
yourself, inparticula rifwarned byLaneK eep-
ing Assist.
If you fail to adapt your driving style, LaneK eep-
ing Assist can neither reduce th eriskofana cci-
dentn oroverr idethel aws of physics .Lane
Keepin gAssist canno ttak ei ntoa ccountt he
road ,tra ffic and weather conditions. LaneK eep-
ing Assist ismerely an aid.You are responsible
for th edistanc etotheveh icle in front, for veh i-
cle speed, for braking ingood tim eand for stay-
ing inyour lane.
The LaneK eepin gAssist does no tkeept he veh i-
cle inthel ane.
The system may beimpaired or may no tfunction
if:
Rthere ispoor vis ibility, e.g .due to insuff icient
illumi nation of th eroad ,ord ue to snow, rain,
fog or spray
Rthere isglare, e.g .fro mo ncom ingt raffic, the
sun or reflections (e.g. when th eroad surface
is wet)
Rthew indshield is dirty, fogged up, damaged or
covered, for instance byasticker, inthev icin-
ity of th ecamera
Rthere are no ,several or unclear lane markings
for alane ,e.g.ina reas withroad construction
work
Rth el ane markings are worn away, dark or cov-
ere dup,e.g .byd irt orsnow
Rthed istanc etothevehicle infrontist oosmall
and th elane markings thus canno tbedetec-
ted
Rth el ane markings chang equickly, e.g. lanes
branch off ,cross onea nother or merge
Rther oad isnarrow and winding
Rthere are stron gshadows cas tontheroad
Switching on Lane Keeping Assist
XSwit ch on Activ eLaneK eepingA ssist using
th eo n-bo ard computer; to do so, select
Standard
or Adaptive(Ypage 171).
If you driv eatspeeds above4 0mph
(60 km/ h)and lane markings are detected,
th el ine sint heassistance graphicsd isplay
(
Ypage 171) are showning reen. LaneKeep-
ing Assist is ready for use.
Standard
If Standardis selected, no warning vibration
occurs if:
Ryou switch on th eturns ignals. In this event,
th ew arning sare suppressedf orac ertain
period of time.
Rad riving safety system intervenes, sucha s
ABS, BA SorESP®.
Adaptive
When Adaptiveis selected, no warning vibra-
tio no ccurs if:
Ryou switch on th eturns ignals. In this event,
th ew arning sare suppressedf orac ertain
period of time.
Rad riving safety system intervenes, e.g .ABS ,
BA SorE SP®.
Ryou accelerate hard,e .g.k ickdown.
Ryou brak ehard.
Ryou steer actively, e.g .swerve to avoid an
obstacle or chang elane squickly.
Ryou cut th ecorner on asharpb end.
In orde rtha ty ou are warned only when neces-
sary and in good tim eifyou cross th elane mark-
ing ,the system recognize scertain conditions
and warn syou accordingly.
The warning vibratio noccurs earlieri f:
Ryou approach th eouter lane markin gona
bend.
Rth er oad has ver ywide lanes, e.g .ahighway.
Rthes ystem recognize ssolid lane markings.
Driving systems161
Driving and parking
Z