key MERCEDES-BENZ SL CLASS 2019 Manual Online

Rsolvents
Rcleaning agents containing solvents
Do not scrub.
Do not touch the surfaces and films withhard objects, e.g. rings or ice scrapers. Oth-erwise, you may scratch or damage the sur-faces and films.
!Do not park your vehicle for a long periodof time directly after cleaning, particularlyafter cleaning the wheel rim with wheelcleaner. Wheel cleaner can lead to theincreased corrosion of the brake discs andpads. Therefore, drive for a few minutesafter cleaning. By heating up the brakes, thebrake discs and pads dry. The vehicle canthen be parked for a long period of time.
Regular care of your vehicle is a condition forretaining the quality in the long term.
Use care products and cleaning agents recom-mended and approved by Mercedes-Benz.
Washing the vehicle and cleaning
the paintwork
Automatic car wash
GWARNING
Braking efficiency is reduced after washing
the vehicle. There is a risk of an accident.
After the vehicle has been washed, brake
carefully while paying attention to the traffic
conditions until full braking power is
restored.
!When DISTRONIC PLUS or the HOLD func-tion is activated, the vehicle brakes auto-matically in certain situations.
To avoid damage to the vehicle, deactivateDISTRONIC PLUS and the HOLD function inthe following or similar situations:
Rwhen towing the vehicle
Rin the car wash
!It is preferable to use car washes withadjustable high-pressure pre-cleaning thatcorresponds to the specification for theCabriolet program. In car washes that usehigh water pressures, there is a risk that asmall amount of water may leak into thevehicle.
!Vehicles with HANDS-FREE ACCESS: if aSmartKey with KEYLESS-GO is within thedetection range of the KEYLESS-GOantenna, the following situations could leadto the unintentional opening of the trunk lid:
Rusing a car wash
Rusing a power washer
Make sure that the SmartKey is at least6.5 ft (2 m) away from the vehicle.
!Never clean your vehicle in a TouchlessAutomatic Car Wash as these use specialcleaning agents. These cleaning agents candamage the paintwork or plastic parts.
If you have your vehicle cleaned in a high-pressure automatic car wash, smallamounts of water may enter the vehicle.
!Make sure that the automatic transmissionis in positionNwhen washing your vehiclein a tow-through car wash. The vehicle couldbe damaged if the transmission is in anotherposition.
!Make sure that:
Rthe side windows and the roof are com-pletely closed
Rthe climate control blower is switched off
Rthe windshield wiper switch is at position0
The vehicle could otherwise be damaged.
You can clean the vehicle at an automatic carwash from the very start.
Preferably clean the vehicle at automatic carwashes that use textile washing elementswithout brushes. This prevents fine scratchesfrom forming on the paintwork and film.
If the vehicle is very dirty, pre-wash it beforecleaning it in an automatic car wash.
After using an automatic car wash, wipe offwax from the windshield and the wiper blades.This will prevent smears and reduce wipingnoises caused by residue on the windshield.
iVehicles with decorative film: select awash program without hot wax at the auto-matic car wash.
Washing by hand
In some countries, washing by hand is onlyallowed at specially equipped washing bays.
Care271
Maintenance and care
Z

Observe the legal requirements in each coun-try.
XDo not use hot water and do not wash thevehicle in direct sunlight.
XUse a soft sponge to clean.
XUse a mild cleaning agent, such as a carshampoo approved by Mercedes-Benz.
XThoroughly hose down the vehicle with agentle jet of water.
XDo not point the water jet directly towardsthe air inlet or the edges of decorative foils.
XUse plenty of water and rinse out thesponge frequently.
XRinse the vehicle with clean water and drythoroughly with a chamois.
XDo not let the cleaning agent dry on thepaintwork or the decorative foils.
Carefully remove all deposits of road salt assoon as possible when driving in winter.
Power washers
GWARNING
The water jet from a circular jet nozzle (dirt
blasters) can cause invisible exterior dam-
age to the tires or chassis components.
Components damaged in this way may fail
unexpectedly. There is a risk of an accident.
Do not use power washers with circular jet
nozzles to clean the vehicle. Have damaged
tires or chassis components replaced imme-
diately.
!Vehicles with decorative film: parts of yourvehicle are covered with decorative film.Maintain a distance of at least 27.5 in(70 cm) between the film-covered parts ofthe vehicle and the nozzle of the powerwasher.
Information about the correct distance isavailable from the equipment manufacturer.
Move the power washer nozzle around whencleaning your vehicle.
The water temperature of the power washermust not exceed 140 ‡ (60 †).
!Always maintain a distance of at least12 in (30 cm) between the vehicle and thepower washer nozzle. Information about thecorrect distance is available from the equip-ment manufacturer.
Move the power washer nozzle around whencleaning your vehicle.
Do not aim directly at any of the following:
RTires
RDoor gaps, roof gaps, joints, etc.
RElectrical components
RBattery
RPlug-type couplings
RLight bulbs
RSeals
RTrim elements
RVentilation slots
Damaged seals or electrical componentscan lead to leaks or failures.
!Vehicles with HANDS-FREE ACCESS: if aSmartKey with KEYLESS-GO is within thedetection range of the KEYLESS-GOantenna, the following situations could leadto the unintentional opening of the trunk lid:
Rusing a car wash
Rusing a power washer
Make sure that the SmartKey is at least6.5 ft (2 m) away from the vehicle.
Cleaning the paintwork
!Do not affix:
Rstickers
Rfilms
Rmagnetic plates or similar items
to painted surfaces. You could otherwisedamage the paintwork.
Scratches, corrosive deposits, areas affectedby corrosion and damage caused by inade-quate care cannot always be completelyrepaired. In such cases, visit a qualified spe-cialist workshop.
XRemove dirt immediately, where possible,while avoiding rubbing too hard.
XSoak insect remains with insect removerand rinse off the treated areas afterwards.
XSoak bird droppings with water and rinse offthe treated areas afterwards.
XRemove tree resin, oils, fuels and greases byrubbing gently with a cloth soaked in petro-leum ether or lighter fluid
XRemove coolant and brake fluid with a moistcloth and clear water.
272Care
Maintenance and care

Tire-change tool kit
The tire-change tool kit can be found in thestowage well under the trunk floor(Ypage 252).
CBag containing the tire-changing tools
BagCwith the tire-changing tools contains:
Rjack
Rlug wrench
Ralignment bolt
Rwheel chock
Rgloves
Depending on the equipment, tools requiredfor a wheel change, such as a jack or a lugwrench, are not available in all vehicles. Toolsapproved for your vehicle are available at aqualified specialist workshop.
Flat tire
Preparing the vehicle
Your vehicle may be equipped with:
Rtires with run-flat characteristics(MOExtended tires) (Ypage 278)
Vehicle preparation is not necessary onvehicles with MOExtended tires.
Ra TIREFIT kit (Ypage 277)
Vehicles with the Mercedes-Benz emer-gency call system:in the event of a flat tire,you can contact the Mercedes-Benz emer-gency call system customer center.
Vehicles equipped with MOExtended tires arenot equipped with a TIREFIT kit at the factory.It is therefore recommended that you addition-ally equip your vehicle with a TIREFIT kit if youmount tires that do not feature run-flat charac-teristics, e.g. winter tires. A TIREFIT kit may beobtained from a qualified specialist workshop.
Information on changing and mounting wheels(Ypage 313).
XStop the vehicle on solid, non-slippery andlevel ground, as far away as possible fromtraffic.
XSwitch on the hazard warning lamps.
XSecure the vehicle against rolling away(Ypage 146).
XIf possible, bring the front wheels into thestraight-ahead position.
XSwitch off the engine.
XVehicles without KEYLESS-GO:removethe SmartKey from the ignition lock.
XVehicles with KEYLESS-GO:open the driv-er's door.The vehicle electronics are now in positionZ. This is the same as the SmartKey havingbeen removed.
XVehicles with KEYLESS-GO:remove theStart/Stop button from the ignition lock(Ypage 126).
XMake sure that the passengers are notendangered as they do so. Make sure thatno one is near the danger area while awheel is being changed. Anyone who is notdirectly assisting in the wheel changeshould, for example, stand behind the bar-rier.
XGet out of the vehicle. Pay attention to traf-fic conditions when doing so.
XClose the driver's door.
MOExtended tires (tires with run-flat
properties)
General notes
With MOExtended tires (tires with run flatcharacteristics), you can continue to drive yourvehicle even if there is a total loss of pressurein one or more tires. The affected tire must notshow any clearly visible damage.
You can recognize an MOExtended tire by theMOExtended marking which appears on thesidewall of the tire. You will find this markingnext to the tire size designation, the load-bear-ing capacity and the speed index(Ypage 307).
MOExtended tires may only be used in con-junction with an active tire pressure monitor.
278Flat tire
Breakdown assistance

!Have the battery regularly checked at aqualified specialist workshop.
Comply with the service intervals in theMaintenance Booklet, or contact a qualifiedspecialist workshop for more information.
!Always have work on batteries carried outat a qualified specialist workshop.
Should it, in exceptional circumstances, beabsolutely necessary to disconnect the 12-volt battery yourself, please observe the fol-lowing:
RSecure the vehicle to prevent it from roll-ing away.
RSwitch off the ignition.
RDisconnect the negative terminal first andthen the positive terminal.
After the work has been done, install thebattery and replace the cover of the positiveterminal clamp firmly.
Comply with safety precautions and take pro-tective measures when handling batteries.
Risk of explosion.
Fire, open flames and smoking areprohibited when handling the bat-tery. Avoid creating sparks.
Battery acid is caustic. Avoid con-tact with skin, eyes or clothing.
Wear suitable protective clothing,especially gloves, apron and face-guard.
Rinse any acid spills immediatelywith clear water. Contact a physi-cian if necessary.
Wear eye protection.
Keep children away.
Observe this Operator's Manual.
For safety reasons, Mercedes-Benz recom-mends that you only use batteries which have
been tested and approved for your vehicle byMercedes-Benz. These batteries provideincreased impact protection to prevent vehicleoccupants from suffering acid burns shouldthe battery be damaged in the event of anaccident.
In order for the battery to achieve the maxi-mum possible service life, it must always besufficiently charged.
Like other batteries, the vehicle battery maydischarge over time if you do not use the vehi-cle. In this case, have the battery disconnec-ted at a qualified specialist workshop. You canalso charge the battery with a charger recom-mended by Mercedes-Benz. Contact a quali-fied specialist workshop for further informa-tion.
Have the battery condition of charge checkedmore frequently if you use the vehicle mainlyfor short trips or if you leave it standing idlefor a lengthy period. Consult a qualified spe-cialist workshop if you wish to leave your vehi-cle parked for a long period of time.
Remove the SmartKey if you park the vehicleand do not require any electrical consumers.The vehicle will then use very little energy,thus conserving battery power.
After an interruption to the power supply, e.g.due to a discharged battery, you must resetthe clock (see the Digital Operator's Manual).
Charging the battery
GWARNING
During charging and jump-starting, explosive
gases can escape from the battery. There is
a risk of an explosion.
Particularly avoid fire, open flames, creating
sparks and smoking. Ensure there is suffi-
cient ventilation while charging and jump-
starting. Do not lean over a battery.
GWARNING
Battery acid is caustic. There is a risk of
injury.
Avoid contact with skin, eyes or clothing. Do
not inhale any battery gases. Do not lean
over the battery. Keep children away from
batteries. Wash away battery acid immedi-
284Battery (vehicle)
Breakdown assistance

Make sure that:
RThe jumper cables are not damaged.
RBare parts of the terminal clamp do not come into contact with other metal parts while thejumper cables are connected to the battery.
RThe jumper cables cannot come into contact with parts which can move when the engine isrunning, such as the V-belt pulley or the fan.
XSecure the vehicle by applying the electric parking brake.
XShift the transmission to position].
XMake sure that the ignition is switched off. All indicator lamps in the instrument cluster mustbe off. When using the SmartKey, turn the SmartKey to position

iJumper cables and further information regarding jump-starting can be obtained at any quali-fied specialist workshop.
Towing and tow-starting
Important safety notes
GWARNING
When towing or tow-starting another vehicle
and its weight is greater than the permissi-
ble gross weight of your vehicle, the:
Rthe towing eye could detach itself
Rthe vehicle/trailer combination could roll-
over.
There is a risk of an accident.
When towing or tow-starting another vehi-
cle, its weight should not be greater than
the permissible gross weight of your vehicle.
Details on the permissible gross vehicle weightof your vehicle can be found on the vehicleidentification plate (Ypage 320).
!When Active Brake Assist, Active DistanceAssist DISTRONIC or the HOLD function isactivated, the vehicle brakes automaticallyin certain situations.
To avoid damage to the vehicle, deactivatethese systems in the following or similar sit-uations:
Rwhen towing the vehicle
Rin the car wash
!Only secure the tow rope or tow bar at thetowing eyes. Otherwise, the vehicle could bedamaged.
!Do not use the towing eye for recovery,this could damage the vehicle. If in doubt,recover the vehicle with a crane.
!When towing, pull away slowly andsmoothly. If the tractive power is too high,the vehicles could be damaged.
!Do not tow with sling-type equipment. Thiscould damage the vehicle.
!When towing away vehicles with KEYLESS-GO, use the key instead of the Start/Stopbutton. The automatic transmission mayotherwise shift to position]when you
open the driver's or front-passenger door,which could damage the transmission.
!Make sure that the electric parking brakeis released. If the electric parking brake isfaulty, visit a qualified specialist workshop.
!You may tow the vehicle for a maximumdistance of 30 miles (50 kilometers). A tow-ing speed of 30 mph (50 km/h) must not beexceeded.
For towing distances over 30 miles(50 kilometers), the entire vehicle must beraised and transported.
!When you are tow-starting or towinganother vehicle, its weight must not exceedthe maximum permissible gross weight ofyour vehicle.
It is better to have the vehicle transportedthan to have it towed away.
The automatic transmission must be in posi-tion\\when the vehicle is being towed away.
The battery must be connected and charged.Otherwise, you:
Rcannot turn the SmartKey to positionHinthe ignition lock
Rcannot shift the automatic transmission toposition\\
Deactivate the automatic locking featurebefore the vehicle is towed (Ypage 201). Youcould otherwise be locked out when pushingor towing the vehicle.
Installing/removing the towing eye
Installing the towing eye
GWARNING
The exhaust tail pipe may be very hot. There
is a risk of burns when removing the rear
cover.
Do not touch the exhaust pipe. Take particu-
lar care when removing the rear cover.
288Towing and tow-starting
Breakdown assistance

The brackets for the screw-in towing eye arelocated in the bumpers. They are at the frontand at the rear, behind the covers.
XRemove the towing eye from the vehicle toolkit (Ypage 277).
XFront bumper:insert a finger into therecess on the bottom edge of coverC.
XPull coverCout of the bumper towards youin the direction of the arrow.
CoverCis attached to the opening with astrap.
XRear bumper:press the mark on coverCinwards in the direction of the arrow.
XRemove coverCfrom the opening.
XScrew in the towing eye clockwise as far asit will go and tighten it.
Removing the towing eye
XUnscrew and remove the towing eye.
XFront bumper:position coverCon theopening in the bumper.
XTo close, press the lower section ofcoverC.
XRear bumper:position coverCwith thetab on the opening in the bumper.
XTo close, press the lower section ofcoverCuntil it engages.
XPlace the towing eye in the vehicle tool kit.
Towing a vehicle with both axles on
the ground
GWARNING
You can no longer steer the vehicle if the
steering wheel lock has been engaged.
There is a risk of an accident.
Always switch off the ignition when towing
the vehicle with a tow cable or a tow bar.
The automatic transmission shifts to position]automatically when you open the driver'sor front-passenger door or when you removethe SmartKey from the ignition lock.
In order to ensure that the automatic trans-mission stays in position\\when towingaway the vehicle, you must observe the follow-ing points:
XSwitch on the hazard warning lamps(Ypage 111).
XMake sure that the vehicle is stationary andthat the SmartKey is in position

When towing away, use a towing rope or atowing bar with both axles on the ground. Donot use any tow bar systems.
Towing the vehicle with the rear axle
raised
!The ignition must be switched off if youare towing the vehicle with the rear axle
raised. Intervention by ESP®could other-wise damage the brake system.
!Vehicles with automatic transmission mustnot be towed with the rear axle raised. Thevehicle/trailer combination may otherwiseswerve or even roll over.
Transporting the vehicle
Vehicles with automatic transmission
!When the vehicle is loaded for transport,the front and rear axles must be stationaryand on the same transportation vehicle.Positioning over the connection point of thetransport vehicle is not permitted. The drivetrain may otherwise be damaged.
All vehicles
!You may only secure the vehicle by thewheels, not by parts of the vehicle such asaxle or steering components. Otherwise, thevehicle could be damaged.
The towing eye can be used to pull the vehicleonto a trailer or transporter for transportingpurposes.
XTurn the SmartKey to positionHin the igni-tion lock.
XShift the transmission to position\\.
As soon as the vehicle has been loaded:
XPrevent the vehicle from rolling away byapplying the electric parking brake.
XShift the transmission to position].
XTurn the SmartKey to position

cerned. Otherwise, components or systemscould be damaged.
!Make sure that no moisture can enter thefuse box when the cover is open.
!When closing the cover, make sure that itis lying correctly on the fuse box. Moistureseeping in or dirt could otherwise impair theoperation of the fuses.
The fuses in your vehicle serve to close downfaulty circuits. If a fuse blows, all the compo-nents on the circuit and their functions stopoperating.
Before changing a fuse
XSwitch off the engine.
XSwitch off all electrical consumers.
XMake sure that the ignition is switched off(Ypage 126).
or
XWhen using the SmartKey, turn the Smart-Key to position

stantly, the tire pressure monitor is malfunc-tioning.
In addition to the warning lamp, a messageappears in the multifunction display. Observethe information on display messages(Ypage 227).
It may take up to ten minutes for a malfunc-tion of the tire pressure monitor to be indica-ted. A malfunction will be indicated by the tirepressure warning lamp flashing for approx-imately one minute and then remaining lit.When the malfunction has been rectified, thetire pressure warning lamp goes out after afew minutes of driving.
The tire pressure values indicated by the on-board computer may differ from those meas-ured at a gas station with a pressure gage. Thetire pressures shown by the on-board com-puter refer to those measured at sea level. Athigh altitudes, the tire pressure values indica-ted by a pressure gage are higher than thoseshown by the on-board computer. In this case,do not reduce the tire pressures.
The operation of the tire pressure monitor canbe affected by interference from radio trans-mitting equipment (e.g. radio headphones,two-way radios) that may be being operated inor near the vehicle.
Checking the tire pressure electroni-
cally
XMake sure that the SmartKey is in positionH(Ypage 126) in the ignition lock.
XPress theYorebutton on the steer-ing wheel to select theServ.Serv.menu.
XPress thecordbutton to selectTire PressureTire Pressure.
XPressv.The current tire pressure of each tire isshown in the multifunction display.
If the vehicle has been parked for over20 minutes, theTire pressure will beTire pressure will bedisplayed after driving a few minutesdisplayed after driving a few minutesmessage appears.
After a teach-in process, the tire pressuremonitor automatically detects new wheels ornew sensors. As long as a clear allocation ofthe tire pressure value to the individual wheelsis not possible, theTire Pressure MonitorTire Pressure MonitorActiveActivedisplay message is shown instead ofthe tire pressure display. The tire pressuresare already being monitored.
Tire pressure monitor warning mes-
sages
The tire pressure monitor detects a pressureloss in one or more tires:
RIf the tire pressure monitor detects a pres-sure loss in one or more tires, a warningmessage is shown in the multifunction dis-play. The yellow tire pressure warning lampthen lights up.
RIf thePlease Correct Tire PressurePlease Correct Tire Pressuremessage appears in the multifunction dis-play, the tire pressure in at least one tire istoo low. The tire pressure must be correctedwhen the opportunity arises.
RIf theCheck TiresCheck Tiresmessage appears in themultifunction display, the tire pressure in atleast one tire has dropped significantly. Thetires must be checked.
RIf theWarning Tire MalfunctionWarning Tire Malfunctionmes-sage appears in the multifunction display,the tire pressure in at least one tire hasdropped suddenly. The tires must bechecked.
Observe the instructions and safety notes inthe display messages in the "Tires" section(Ypage 227).
If the wheel positions on the vehicle are rota-ted, the tire pressures may be displayed forthe wrong positions for a short time. This isrectified after a few minutes of driving, and thetire pressures are displayed for the correctpositions.
Restarting the tire pressure monitor
When you restart the tire pressure monitor, allexisting warning messages are deleted and thewarning lamps go out. The monitor uses thecurrently set tire pressures as the referencevalues for monitoring. In most cases, the tirepressure monitor will automatically detect thenew reference values after you have changedthe tire pressure. However, you can also setreference values manually as described here.The tire pressure monitor then monitors thenew tire pressure values.
XSet the tire pressure to the value recom-mended for the corresponding driving situa-tion on the Tire and Loading Informationplacard on the driver's side B-pillar(Ypage 296).
Tire pressure301
Wheels and tires
Z