MERCEDES-BENZ SL CLASS 2019 Owners Manual

Exterior lighting
General notes
For reasons of safety, Mercedes-Benz recom-mends that you drive with the lights switchedon even during the daytime. In some coun-tries, operation of the headlamps varies due tolegal requirements and self-imposed obliga-tions.
Setting the exterior lighting
Setting options
Exterior lighting can be set using:
Rthe light switch
Rthe combination switch (Ypage 110)
Rthe on-board computer (Ypage 200)
Light switch
Operation
GcLeft-hand standing lamps
HdRight-hand standing lamps
I`Parking lamps, license plate andinstrument cluster lighting
JXAutomatic headlamp mode, control-led by the light sensor
KXLow-beam/high-beam headlamps

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 200).
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.
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 several
hours. 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 blueWindicator lamp in the instru-ment cluster lights up when the high-beamheadlamps are switched on.
XTo switch off the high-beam headlamps:move the combination switch back to itsnormal position.The blueWindicator lamp in the instru-ment cluster goes out.
Hazard warning lamps
XTo switch on the hazard warning lamps:press buttonC.All turn signals flash. If you now switch on aturn signal using the combination switch,only the turn signal lamp on the correspond-ing side of the vehicle will flash.
XTo switch off the hazard warning lamps:press buttonC.
The hazard warning lamps automaticallyswitch on if:
Ran air bag is deployed or
Rthe vehicle decelerates rapidly from a speedof above 45 mph (70 km/h) and comes to astandstill
The hazard warning lamps switch off automati-cally if the vehicle reaches a speed of above6 mph (10 km/h) again after a full brake appli-cation.
iThe hazard warning lamps still operate ifthe ignition is switched off.
Cornering light function
The cornering light function improves the illu-mination of the road over a wide angle in thedirection you are turning, enabling better visi-bility in tight bends, for example. The corner-
ing light function can only be activated whenthe low-beam headlamps are switched on.
Active:
Rif you are driving at speeds below 25 mph(40 km/h) and switch on the turn signal orturn the steering wheel
Rif you are driving at speeds between 25 mph(40 km/h) and 45 mph (70 km/h) and turnthe steering wheel
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 longer
Exterior lighting111
Lights and windshield wipers
Z

detects 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

Interior lighting control
General notes
In order to prevent the vehicle's battery fromdischarging, the interior lighting functions areautomatically deactivated after some time,unless the SmartKey is in positionHin theignition lock.
The color and brightness of the ambient light-ing are set via the multimedia system(Ypage 200).
Automatic interior lighting control
XTo switch on:set the switch to center posi-tionK.
XTo switch off:set the switch to the3position.
The interior lighting automatically switches onif you:
Runlock the vehicle
Ropen a door
Rremove the SmartKey from the ignition lock
The interior lighting is switched on for a settime when the SmartKey is removed from theignition lock. You can activate this delayedswitch-off using the on-board computer(Ypage 201).
Replacing bulbs
The front and rear lamps of your vehicle areequipped with LED bulbs. Do not replace thebulbs yourself. Contact a qualified specialistworkshop which has the necessary specialistknowledge and tools to carry out the workrequired.
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.
Windshield wipers
Switching the windshield wipers
on/off
!Do not operate the windshield wiperswhen the windshield is dry, as this could
damage 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

Replacing the wiper blades
Important safety notes
GWARNING
If the windshield wipers begin to move while
you are changing the wiper blades, you
could be trapped by the wiper arm. There is
a risk of injury.
Always switch off the windshield wipers and
ignition before changing the wiper blades.
!To avoid damaging the wiper blades, makesure that you touch only the wiper arm ofthe wiper.
!Never open the hood if a windshield wiperarm has been folded away from the wind-shield.
Never fold a windshield wiper arm without awiper blade back onto the windshield.
Hold the windshield wiper arm firmly whenyou change the wiper blade. If you releasethe windshield wiper arm without a wiperblade and it falls onto the windshield, thewindshield may be damaged by the force ofthe impact.
Mercedes-Benz recommends that you havethe wiper blades changed at a qualified spe-cialist workshop.
!Always position the windshield wiper armsvertically before folding them away from thewindshield. By doing so, you will avoid dam-age to the hood.
Replacing the windshield wiper blades
Moving the wiper arm to a vertical posi-
tion
On vehicles without KEYLESS-GO:
XTurn the SmartKey to positionGorHinthe ignition lock.
XSet the windshield wiper to position

XPush the new wiper blade in the direction ofarrowConto the wiper arm until lugDengages.
XPush the wiper blade out of the removalposition in the direction of arrow

Overview of climate control systems
General notes
Observe the settings recommended on the fol-lowing pages. The windows could otherwisefog up.
To prevent the windows from fogging up:
Rswitch off climate control only briefly
Rswitch on air-recirculation mode only briefly
Rswitch on the cooling with air dehumidifica-tion function
Rswitch on the defrost windshield functionbriefly, if required
Climate control regulates the temperature andthe humidity in the vehicle interior and filtersundesirable substances out of the air.
Climate control can only be operated when theengine is running. Optimum operation is onlyachieved with the side windows and roofclosed.
iWhen the weather is warm, ventilate thevehicle for a brief period. This will speed upthe cooling process and the desired vehicleinterior temperature will be reached morequickly.
iIt is possible that the dehumidificationfunction of the climate control system maybe activated automatically an hour after theSmartKey has been removed. The vehicle isthen ventilated for 30 minutes to dry the air-conditioning system.
Control panel for dual-zone automatic climate control
Canada only
CSets the temperature, left (Ypage 119)
DSets climate control to automatic (Ypage 119)

pAdjusts the climate mode settings (Ypage 119)
qSwitches air-recirculation mode on/off (Ypage 122)
USA only
CSets the temperature, left (Ypage 119)
DSets climate control to automatic (Ypage 119)

RUse the residual heat function if you want toheat or ventilate the vehicle interior whenthe ignition is switched off. The residualheat function can only be activated or deac-tivated with the ignition switched off.
RVehicles with COMAND:if you change thesettings of the climate control system, theclimate status display appears for three sec-onds at the bottom of the screen in theCOMAND display. You will see the currentsettings of the various climate control func-tions.
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 130).
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 119).
Activating/deactivating
XTurn the SmartKey to positionHin the igni-tion lock (Ypage 126).
XTo activate: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 deactivate: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 theZbutton.The indicator lamp in theZbutton lightsup.
XTo deactivate:press theZbutton.The indicator lamp in theZorVbut-ton goes out. The "Cooling with air dehumid-ification" function has a delayed switch-offfeature.
The indicator lamp in theZbutton goesout. The "Cooling with air dehumidification"function has a delayed switch-off feature.
118Operating the climate control systems
Climate control