MERCEDES-BENZ SL CLASS 2019 Owners Manual

Problems with the "Cooling with air dehumidification" function
ProblemPossible causes/consequences andPPSolutions
The indicator lamp intheZbutton flashesthree times or remainsoff. The "Cooling withair dehumidification"function cannot beswitched on.
Cooling with air dehumidification has been deactivated due to amalfunction.
XVisit a qualified specialist workshop.
Setting climate control to automatic
General notes
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 126).
XSet the desired temperature.
XTo activate:press theXbutton.The indicator lamp in theXbutton lightsup. Automatic air distribution and airflow areactivated.
iWhen automatic mode is enabled, the cli-mate mode can be selected (Ypage 119).
XTo switch to manual mode:press the

Setting the air distribution
Activating/deactivating
XTurn the SmartKey to positionHin the igni-tion lock (Ypage 126).
XPress the

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

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 126).
XTo activate:press therbutton.The indicator lamp in therbutton lightsup.
iAir-recirculation mode is automaticallyactivated at high levels of pollution 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

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 glove compartment air
vent
!Close the air vent when heating the vehi-cle.
At high outside temperatures, open the airvent and activate the "cooling with air dehu-midification" function. Otherwise, tempera-ture-sensitive items stored in the glove boxcould be damaged.
CAir vent control
DAir vent
When the climate control system is activated,the glove box can be ventilated, for instance tocool its contents. The level of airflow dependson the airflow and air distribution settings.
Setting the air vents123
Climate control
Z

XTo open or close:turn thumbwheelCtothe right or left.
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 102).
124Setting 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

GWARNING
If you switch off the ignition while driving,
safety-relevant functions are only available
with limitations, or not at all. This could
affect, for example, the power steering and
the brake boosting effect. You will require
considerably more effort to steer and brake.
There is a risk of an accident.
Do not switch off the ignition while driving.
GWARNING
If the parking brake has not been fully
released when driving, the parking brake
can:
Roverheat and cause a fire
Rlose its hold function.
There is a risk of fire and an accident.
Release the parking brake fully before driv-
ing off.
!Do not warm up the engine while station-ary. Pull away immediately. Avoid highengine speeds and full throttle until theengine has reached its operating tempera-ture.
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.
!Mercedes-AMG vehicles:at low engineoil temperatures below 68 ‡ (+20 †), themaximum engine speed is restricted inorder to protect the engine. To protect theengine and maintain smooth engine opera-tion, avoid driving at full throttle when theengine is cold.
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 keypositions 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-
126Driving
Driving and parking

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 74).
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.
Key positions with KEYLESS-GO
CStart/Stop button
DIgnition lock
As soon as the ignition is switched on, all theindicator lamps in the instrument cluster lightup. Further information on situations where anindicator lamp either fails to go out after start-
ing the engine or lights up while driving(Ypage 235).
If Start/Stop buttonChas not yet beenpressed, this corresponds to the key beingremoved from the ignition.
XTo switch on the power supply:pressStart/Stop buttonConce.The power supply is switched on. You cannow activate the windshield wipers, forexample.
The power supply is switched off again if:
Rthe driver's door is opened and
Ryou press Start/Stop buttonCtwicewhen in this position
XTo switch on the ignition:press Start/Stop buttonCtwice.The ignition is switched on.
If you press Start/Stop buttonConcewhen in this position, the ignition isswitched off again.
Removing the Start/Stop button
You can remove the Start/Stop button fromthe ignition lock and start the vehicle as nor-mal using the SmartKey.
XRemove Start/Stop buttonCfrom ignitionlockD.
You do not have to remove the Start/Stop but-ton from the ignition lock when you leave thevehicle. You should, however, always take theSmartKey with you when leaving the vehicle.As long as the SmartKey is in the vehicle:
Rthe vehicle can be started using the Start/Stop button
Rthe electrically powered equipment can beoperated
Starting the engine
Important safety notes
GWARNING
If children are left unsupervised in the vehi-
cle, they could:
Roperate the vehicle's equipment
Driving127
Driving and parking
Z

Additionally, children could set the vehicle in
motion if, for example, they:
Rrelease the parking brake
Rshift the automatic transmission out of
park position]
Rstart the engine
There is a risk of an accident and injury.
Never leave children or animals unattended
in the vehicle.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. This
also applies for the Digital Vehicle Key if the
"Digital Vehicle Key" function is activated via
Mercedes me connect.
GDANGER
Combustion engines emit poisonous
exhaust gases such as carbon monoxide.
Inhaling these exhaust gases is hazardous to
health and can result in poisoning. There is a
risk of fatal injury. Therefore, never leave the
engine running an enclosed space without
adequate ventilation.
GWARNING
Flammable materials introduced through
environmental influence or by animals can
ignite if in contact with the exhaust system
or parts of the engine that heat up. There is
a risk of fire.
Carry out regular checks to make sure that
there are no flammable foreign materials in
the engine compartment or in the exhaust
system.
The catalytic converter is preheated for up to30 seconds after a cold start. The sound of theengine may change during this time.
Automatic transmission
XDepress the brake pedal and keep itdepressed.
XShift the transmission to position].Transmission position display]is shownin the multifunction display.
iYou can start the engine in transmissionposition]and\\.
Starting procedure with the SmartKey
To start the engine using the SmartKey insteadof KEYLESS-GO, pull the Start/Stop button outof the ignition lock.
XTurn the SmartKey to positionI(Ypage 126) in the ignition lock and releaseit as soon as the engine is running.
Using KEYLESS-GO to start the engine
The Start/Stop button can be used to start thevehicle manually without inserting the Smart-Key into the ignition lock. The Start/Stop but-ton must be inserted in the ignition lock andthe SmartKey must be in the vehicle. Thismode for starting the engine operates inde-pendently of the ECO start/stop automaticengine start function.
XDepress the brake pedal and keep itdepressed.
XPress the Start/Stop button once(Ypage 126).The engine starts.
Pulling away
General notes
GWARNING
If the engine speed is above the idling speed
and you engage transmission position:
orF, the vehicle could pull away sud-
denly. There is a risk of an accident.
When engaging transmission position:
orF, always firmly depress the brake
pedal and do not simultaneously accelerate.
Depress the accelerator carefully when pullingaway.
The vehicle locks centrally once you havepulled away. The locking knobs in the doorsdrop down.
You can open the doors from the inside at anytime.
You can also deactivate the automatic lockingfeature (Ypage 201).
128Driving
Driving an d parking