2019 MERCEDES-BENZ SLC Owners Manual

Problems with the "Cooling with air dehumidification" function
ProblemPossible causes/consequences andPPSolutions
The indicator lamp intheZorVbut-ton flashes three timesor remains off. The"Cooling with air dehu-midification" functioncannot be switched on.
Cooling with air dehumidification has been deactivated due to amalfunction.
XVisit a qualified specialist workshop.
Setting climate control to automatic
General notes
Automatic mode is only available with 3-zoneautomatic climate control.
In automatic mode, the set temperature ismaintained automatically at a constant level.The system automatically regulates the tem-perature of the dispensed air, the airflow andthe air distribution.
The automatic mode functions optimally whenthe "Cooling with air dehumidification" func-tion is activated. If necessary, cooling with airdehumidification can be deactivated.
If you deactivate the "Cooling with air-dehu-midification" function, the air inside the vehiclewill not be cooled. The air inside the vehiclewill also not be dehumidified. The windows canfog up more quickly. Therefore, deactivate thecooling with air-dehumidification function onlybriefly.
Automatic control
XTurn the SmartKey to positionHin the igni-tion lock (Ypage 118).
XSet the desired temperature.
XTo activate:press theXbutton.The indicator lamp in theXbutton lightsup. Automatic air distribution and airflow areactivated.
XTo switch to manual mode:press the

Setting the air distribution
Air-conditioning system
XTurn the SmartKey to positionHin the igni-tion lock (Ypage 118).
XPress one or more of the

Switching the "windshield defrosting"
function on or off
XTurn the SmartKey to positionHin the igni-tion lock (Ypage 118).
XTo switch on:press thedbutton.The indicator lamp in thedbutton lightsup.
The climate control system switches to thefollowing functions:
Rhigh airflow
Rhigh temperature
Rair distribution to the windshield and frontside windows
Rair-recirculation mode off
XTo switch off:press thedbutton.The indicator lamp in thedbutton goesout. The previously selected settings arerestored. Air-recirculation mode remainsdeactivated.
or
XDual-zone automatic climate control: presstheXbutton.The indicator lamp in thedbutton goesout. Airflow and air distribution are set toautomatic mode.
MAX COOL maximum cooling
The MAX COOL function is only available invehicles for the USA.
MAX COOL is only operational when theengine is running.
XTo activate:press the

Problems with the rear window defroster
ProblemPossible causes/consequences andPPSolutions
The indicator lamp onthelbuttonflashes. The rear win-dow defroster has deac-tivated prematurely orcannot be activated.
The on-board voltage is too low because too many electrical con-sumers are switched on.
XSwitch off any consumers that are not required, e.g. readinglamps, interior lighting or the seat heating.When the battery is sufficiently charged, the rear windowdefroster can be activated again.
The roof is open.
XClose the roof.When the roof is closed, the rear window defroster can be activa-ted again.
Switching air-recirculation mode
on/off
General notes
If you switch on air-recirculation mode, thewindows can fog up more quickly, in particularat low temperatures. Only use air-recirculationmode briefly to prevent the windows from fog-ging up.
Activating/deactivating
XTurn the SmartKey to positionHin the igni-tion lock (Ypage 118).
XTo activate:press therbutton.The indicator lamp in therbutton lightsup.
iAir-recirculation mode is automaticallyactivated at high levels of pollution (dual-zone automatic climate control only) or athigh outside temperatures. When air-recir-culation mode is activated automatically,the indicator lamp in therbutton is notlit. Outside air is added after about30 minutes.
XTo deactivate:press therbutton.The indicator lamp in therbutton goesout.
iAir-recirculation mode deactivates auto-matically:
Rafter approximately five minutes at out-side temperatures below approximately41 ‡ (5 †)
Rafter approximately five minutes if coolingwith air dehumidification is deactivated
Rafter approximately 30 minutes at outsidetemperatures above approximately 41 ‡(5 †) if the "Cooling with air dehumidifi-cation" function is activated
Switching the residual heat on or off
General notes
The residual heat function is only available onvehicles for Canada.
It is possible to make use of the residual heatof the engine to continue heating the station-ary vehicle for up to 30 minutes after theengine has been switched off. The heatingtime depends on the set interior temperature.
Activating/deactivating
XTurn the SmartKey to position

iIf you activate the residual heat function athigh temperatures, only the ventilation willbe activated. The blower runs at mediumspeed.
XTo deactivate:press theKorVbut-ton.The indicator lamp in theKorVbut-ton goes out.
Residual heat is deactivated automatically:
Rafter approximately 30 minutes
Rwhen the ignition is switched on
Rif the battery voltage drops
Setting the air vents
Important safety notes
GWARNING
Very hot or very cold air can flow from the
air vents. This could result in burns or frost-
bite in the immediate vicinity of the air
vents. There is a risk of injury.
Make sure that all vehicle occupants always
maintain a sufficient distance to the air out-
lets. If necessary, redirect the airflow to
another area of the vehicle interior.
GWARNING
When AIRSCARF is switched on, very hot air
can flow from the vents in the head
restraints. This could result in burns in the
immediate vicinity of the air vents. There is a
risk of injury.
Reduce the heater output before it becomes
too hot.
In order to ensure the direct flow of fresh airthrough the air vents into the vehicle interior,please observe the following notes:
Rkeep the air inlet grille on the hood and inthe engine compartment on the front-passenger side free of blockages, such asice, snow or leaves.
Rnever cover the air vents or air intake grillesin the vehicle interior.
iYou can move the adjusters for the airvents vertically or horizontally to set thedirection of the airflow.
iFor optimal climate control in the vehicle,open the air vents completely and set theadjusters to the central position.
Setting the center air vents
XTo open the center air vents:turn theadjuster in one of center air ventsCcoun-ter-clockwise.
XTo close the center air vents:turn theadjuster in one of center air ventsCclock-wise until it engages.
Setting the side air vents
CSide window defroster vent
DSide air vent
XTo open a side air vent:turn the adjusterin the side air ventDto the left.
XTo close a side air vent:turn the adjusterin the side air ventDto the right until itengages.
Setting the air vents115
Climate control
Z

Setting the blower output of the AIR-
SCARF vents
GWARNING
When AIRSCARF is switched on, very hot air
can flow from the vents in the head
restraints. This could result in burns in the
immediate vicinity of the air vents. There is a
risk of injury.
Reduce the heater output before it becomes
too hot.
You can adjust the blower output of AIRSCARFventsCusing the AIRSCARF button(Ypage 89).
116Setting the air vents
Climate control

Notes on breaking-in a new vehicle
Important safety notes
The sensor system of some driving and drivingsafety systems adjusts automatically while acertain distance is being driven after the vehi-cle has been delivered or after repairs. Fullsystem effectiveness is not reached until theend of this teach-in procedure.
New and replaced brake pads and discs onlyreach their optimum braking effect after sev-eral hundred kilometers of driving. Compen-sate for this by applying greater force to thebrake pedal.
The first 1000 miles (1500 km)
The more you look after the engine when it isnew, the more satisfied you will be with itsperformance in the future.
RYou should therefore drive at varying vehicleand engine speeds for the first 1,000 miles(1,500 km).
RAvoid heavy loads, e.g. driving at full throt-tle, during this period.
RChange gear in good time, before the tach-ometer needle is

In vehicles with automatic transmission,engage positions P and R only when thevehicle is stationary.
Where possible, avoid spinning the drivewheels when pulling away on slippery roads.You could otherwise damage the drive train.
Key positions
SmartKey
ZTo remove the SmartKey
GPower supply for some consumers, suchas the windshield wipers
HIgnition (power supply for all consumers)and drive position
ITo start the engine
iThe SmartKey can be turned in the ignitionlock even if it is not the correct SmartKeyfor the vehicle. The ignition is not switchedon. The engine cannot be started.
KEYLESS-GO
General notes
Vehicles with KEYLESS-GO are equipped witha SmartKey featuring an integrated KEYLESS-GO start function and a detachable Start/Stopbutton.
The Start/Stop button must be inserted in theignition lock and the SmartKey must be in thevehicle.
When you insert the Start/Stop button intothe ignition lock, the system needs approx-imately two seconds recognition time. You canthen use the Start/Stop button.
Pressing the Start/Stop button several timesin succession corresponds to the different key
positions in the ignition lock. This is only thecase if you are not depressing the brake pedal.
If you depress the brake pedal and press theStart/Stop button, the engine starts immedi-ately.
A check which periodically establishes a radioconnection between the vehicle and theSmartKey determines whether a valid Smart-Key is in the vehicle. This occurs, for example,when starting the engine.
To start the vehicle without actively using theSmartKey:
Rthe Start/Stop button must be inserted inthe ignition lock.
Rthe SmartKey must be in the vehicle.
Rthe vehicle must not be locked with theSmartKey or KEYLESS-GO (Ypage 66).
Do not keep the SmartKey:
Rwith electronic devices, e.g. a mobile phoneor another SmartKey.
Rwith metallic objects, e.g. coins or metalfoil.
Rinside metallic objects, e.g. a metal case.
This can impair the functionality of the KEY-LESS-GO key.
If you lock the vehicle with the SmartKey'sremote control or with KEYLESS-GO, after ashort time:
Ryou will not be able to switch on the ignitionwith the Start/Stop button.
Ryou will not be able to start the engine withthe Start/Stop button until the vehicle isunlocked again.
The engine can be switched off while the vehi-cle is in motion by pressing and holding theStart/Stop button for three seconds. Thisfunction operates independently of the ECOstart/stop automatic engine switch-off func-tion.
118Driving
Driving and parking