2019 MERCEDES-BENZ SLC light

When the engine is running, the vehicle is sta-tionary and in bright ambient light: if you turnthe light switch to the`position, the day-time running lamps and parking lamps switchon.
If the engine is running and you turn the lightswitch toX, the manual settings take prec-edence over the daytime running lamps.
USA only:
The daytime running lamps improve the visibil-ity of your vehicle during the day. To do this,the daytime running lamps function must beswitched on using the on-board computer(Ypage 176).
If the engine is running and you turn the lightswitch to`orX, the manual settingstake precedence over the daytime runninglamps.
Low-beam headlamps
GWARNING
When the light switch is set toX, 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 a
risk of an accident.
In such situations, turn the light switch to
X.
Even if the light sensor does not detect that itis dark, the parking lamps and low-beam head-lamps switch on when the ignition is switchedon and the light switch is set to theXposi-tion. This is a particularly useful function in theevent of rain and fog.
XTo switch on the low-beam headlamps:turn the SmartKey to positionHin the igni-tion lock or start the engine.
XTurn the light switch toX.The greenXindicator lamp in the instru-ment cluster lights up.
Rear fog lamp
The rear fog lamp improves visibility of yourvehicle for the traffic behind in the event ofthick fog. Please take note of the country-spe-cific regulations for the use of rear fog lamps.
XTo switch on the rear fog lamp:turn theSmartKey to positionHin the ignition lockor start the engine.
XTurn the light switch toXorX.
XPress the^button.The yellow^indicator lamp in the instru-ment cluster lights up.
XTo switch off the rear fog lamp:press the^button.The yellow^indicator lamp in the instru-ment cluster goes out.
Parking lamps
!If the battery charge is very low, the park-ing lamps or standing lamps are automati-cally switched off to enable the next enginestart. Always park your vehicle safely and ina well lit area, in accordance with the rele-vant legal stipulations. Avoid using the`parking lamps over a period of severalhours. If possible, switch on the right-handdor left-handcstanding lamps.
XTo switch on:turn the light switch to`.The green`indicator lamp in the instru-ment cluster lights up.
Standing lamps
Switching on the standing lamps ensures thecorresponding side of the vehicle is illumina-ted.
XTo switch on the standing lamps:theSmartKey is not in the ignition lock or it is inposition

The cornering lamp may remain lit for a shorttime, but is automatically switched off after nomore than three minutes.
Cornering light function with traffic circlefunction:
The cornering light function is activated onboth sides before entering a traffic circlethrough an evaluation of the current GPS posi-tion of the vehicle. It remains active until afterthe vehicle has left the traffic circle. In thisway, pedestrians crossing the road, for exam-ple, are illuminated by your vehicle in goodtime.
Active light function
The active light function is a system thatmoves the headlamps according to the steer-ing movements of the front wheels. In thisway, relevant areas remain illuminated whiledriving. This allows you to recognize pedes-trians, cyclists and animals sooner.
Active:when the lights are switched on.
Vehicles with Lane Keeping Assist: the activelight function evaluates the course of the lanein which you are driving and pre-emptivelycontrols the active light function.
Adaptive Highbeam Assist
General notes
You can use this function to set the headlampsto change between low beam and high beamautomatically. The system recognizes vehicleswith their lights on, either approaching fromthe opposite direction or traveling in front ofyour vehicle, and consequently switches theheadlamps from high beam to low beam.
The system automatically adapts the low-beamheadlamp range depending on the distance tothe other vehicle. Once the system no longerdetects any other vehicles, it reactivates thehigh-beam headlamps.
The system's optical sensor is located behindthe windshield near the overhead controlpanel.
Important safety notes
GWARNING
Adaptive Highbeam Assist does not recog-
nize road users:
Rwho have no lights, e.g. pedestrians
Rwho have poor lighting, e.g. cyclists
Rwhose lighting is blocked, e.g. by a barrier
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 headlamps will not be
deactivated or will be activated regardless.
There is a risk of an accident.
Always carefully observe the traffic condi-
tions and switch off the high-beam head-
lamps in good time.
Adaptive Highbeam Assist cannot take intoaccount road, weather or traffic conditions.Adaptive Highbeam Assist is only an aid. Youare responsible for adjusting the vehicle'slighting to the prevailing light, visibility andtraffic conditions.
In particular, the detection of obstacles can berestricted if there is:
Rpoor visibility, e.g. due to fog, heavy rain orsnow
Rdirt on the sensors or the sensors areobscured
Switching Adaptive Highbeam Assist
on/off
XTo switch on:turn the light switch toX.
XPress the combination switch beyond thepressure point in the direction of arrowC.The

The high-beam headlamps are switched onautomatically. TheWindicator lamp inthe instrument cluster also lights up.
If you are driving at speeds below approx-imately 16 mph (25 km/h) or other roadusers have been detected or the roads areadequately lit:
The high-beam headlamps are switched offautomatically. TheWindicator lamp inthe instrument cluster goes out. The

bulbs of the same type and the specified volt-age.
Marks on the glass tube reduce the service lifeof the bulbs. Do not touch the glass tube withyour bare hands. If necessary, clean the glasstube when cold with alcohol or spirit and rub itoff with a lint-free cloth.
Protect bulbs from moisture during operation.Do not allow bulbs to come into contact withliquids.
Only replace the lamps listed (Ypage 102).Have the bulbs that you cannot replace your-self replaced at a qualified specialist work-shop.
If you require assistance replacing lamps, con-sult a qualified specialist workshop.
If the new lamp still does not light up, consulta qualified specialist workshop.
Bulbs and lamps are an important aspect ofvehicle safety. You must therefore make surethat these function correctly at all times. Havethe headlamp setting checked regularly.
Vehicles with LED headlamps
The front and rear light clusters of your vehicleare equipped with LED light bulbs. Do notreplace the bulbs yourself. Contact a qualifiedspecialist workshop which has the necessaryspecialist knowledge and tools to carry out thework required.
Overview: replacing bulbs/bulb
types
Halogen headlamps
CLow-beam headlamp: H7 55 W
DHigh-beam headlamp: H7 55 W
Replacing the front bulbs
Removing/mounting the cover in the
front wheel housing
XTo remove:switch off the lights.
XTurn the front wheels inwards.
XSlide coverCup and remove it.
XTo install:reinsert coverCand slide itdown until it engages.
Low-beam headlamps (halogen head-
lamps)
XRemove the cover in the front wheel hous-ing (Ypage 102).
XTurn housing coverCcounter-clockwiseand pull it out.
XPush barDupwards.
XRemove connector

XAttach housing coverCand turn it clock-wise until it engages.
XReplace the cover in the front wheel housing(Ypage 102).
High-beam headlamps (halogen head-
lamps)/cornering lamps (Bi-Xenon
headlamps)
XSwitch off the lights.
XOpen the hood.
XTurn housing coverCcounter-clockwiseand pull it out.
XAt the bulb holder, push the bulb upwards,disconnect it and pull it out of bulbholderD.
XInsert the new bulb into bulb holderDatthe top, push it down and secure it in place.
XAttach housing coverCand turn it clock-wise until it engages.
Side marker lamps (halogen head-
lamps)
Due to their location, have the bulbs in theside marker lamp changed at a qualified spe-cialist workshop.
Windshield wipers
Switching the windshield wipers
on/off
!Do not operate the windshield wiperswhen the windshield is dry, as this coulddamage the wiper blades. Moreover, dustthat has collected on the windshield canscratch the glass if wiping takes place whenthe windshield is dry.
If it is necessary to switch on the windshieldwipers in dry weather conditions, always usewasher fluid when operating the windshieldwipers.
!If the windshield wipers leave smears onthe windshield after the vehicle has beenwashed in an automatic car wash, wax orother residues may be the reason for this.Clean the windshield using washer fluidafter washing the vehicle in an automaticcar wash.
!Intermittent wiping with rain sensor: dueto optical influences and the windshieldbecoming dirty in dry weather conditions,the windshield wipers may be activatedinadvertently. This could then damage thewindshield wiper blades or scratch the wind-shield.
For this reason, you should always switchoff the windshield wipers in dry weather.
Combination switch
G?Windshield wiper off
HbIntermittent wipe, low (rain sensorset to low sensitivity)
IcIntermittent wipe, high (rain sensorset to high sensitivity)
J

Problems with the windshield wipers
ProblemPossible causes/consequences andPPSolutions
The windshield wipersare jammed.Leaves or snow, for example, may be obstructing the windshieldwiper movement. The wiper motor has been deactivated.
XFor safety reasons, you should remove the SmartKey from theignition lock.
or
XSwitch off the engine using the Start/Stop button and open thedriver's door.
XRemove the cause of the obstruction.
XSwitch the windshield wipers back on.
The windshield wipersfail completely.The windshield wiper drive is malfunctioning.
XSelect another wiper speed on the combination switch.
XHave the windshield wipers checked at a qualified specialistworkshop.
The windshield washerfluid from the spray noz-zles no longer hits thecenter of the wind-shield.
The spray nozzles are misaligned.
XHave the spray nozzles adjusted at a qualified specialist work-shop.
Windshield wipers105
Lights and windshield wipers
Z

ECO start/stop function
During automatic engine switch-off, the cli-mate control system only operates at areduced capacity. If you require full climatecontrol capacity, the ECO start/stop functioncan be deactivated by pressing the ECO but-ton (Ypage 122).
Operating the climate control sys-
tems
Activating/deactivating climate con-
trol
General notes
When the climate control is switched off, theair supply and air circulation are also switchedoff. The windows could fog up. Therefore,switch off climate control only briefly
iActivate climate control primarily using theXbutton (Ypage 111).
Air-conditioning system
XTurn the SmartKey to positionHin the igni-tion lock (Ypage 118).
XTo switch on:turn airflow controlkclock-wise to the desired position (except position0) (Ypage 106).
XTo switch off:turn airflow controlkcoun-ter-clockwise to position0(Ypage 106).
3-zone automatic climate control
XTurn the SmartKey to positionHin the igni-tion lock (Ypage 118).
XTo switch on:press theXbutton.The indicator lamp in theXbutton lightsup. Airflow and air distribution are set toautomatic mode.
or
XPress thexbutton.The indicator lamp in thexbutton goesout. The previously selected settings arerestored.
XTo switch off:press thexbutton.The indicator lamp in thexbutton lightsup.
Switching cooling with air dehumidi-
fication on/off
General notes
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.
The "Cooling with air dehumidification" func-tion is only available when the engine is run-ning. The air inside the vehicle is cooled anddehumidified according to the temperatureselected.
Condensation may drip from the underside ofthe vehicle when it is in cooling mode. This isnormal and not a sign that there is a malfunc-tion.
Activating/deactivating
XTo activate:press theZorVbut-ton.The indicator lamp in theZorVbut-ton lights up.
XTo deactivate:press theZorVbut-ton.The indicator lamp in theZorVbut-ton goes out. The "Cooling with air dehumid-ification" function has a delayed switch-offfeature.
110Operating the climate control systems
Climate control

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