key MERCEDES-BENZ SL CLASS 2019 Repair Manual

XPress DYNAMIC SELECT buttonCas manytimes as necessary until the desired driveprogram is selected.The selected drive program appears in themultifunction display. After a short period oftime, the display goes out and the symbolfor the selected drive program appears.
In addition, the current drive program set-tings are displayed briefly in the multimediasystem display.
iIn a few countries, the ECO start/stopfunction is deactivated at the factory due tothe available fuel grade. In this case, theECO start/stop function is not available inany drive program, regardless of the displayin the multimedia system display.
Available drive programs:
CComfortComfortable and economi-cal driving characteristics
SSportSporty driving characteris-tics
S+Sport PlusParticularly sporty drivingcharacteristics
IIndividualIndividual settings
EEconomy
(vehicles withadjustabledamping)
Particularly economicaldriving characteristics
CVCURVE
(vehicles withActive BodyControl)
Particularly economicaldriving characteristics withcornering function
Additional information for drive programs(Ypage 138).
DYNAMIC SELECT controller
(Mercedes-AMG vehicles)
General information
Select the drive program using the DYNAMICSELECT controller.
Available drive programs:
IIndividualIndividual settings
CComfortComfort-oriented, opti-mum-economy engine andtransmission settings
SSportSporty engine and trans-mission settings
S+Sport PlusParticularly sporty trans-mission settings
RaceMaximum sportiness andengine and transmissionsettings suitable for theracetrack
Depending on the drive program selected thefollowing vehicle characteristics will change:
Rthe drive (engine management)
Rthe transmission management
RESP®
Rthe suspension
Rthe steering
Rthe availability of the ECO start/stop func-tion
Rthe driver assistance systems
Rthe availability of gliding mode
Further information for automatic drive pro-gram characteristics (Ypage 138).
Additionally, in drive programIyou can config-ure the respective vehicle characteristicsusing the multimedia system. You can findinformation about this in the Digital Operator'sManual.
Each time you start the engine with the Smart-Key or the Start/Stop button, drive programCis activated. For further information aboutstarting the engine, see (Ypage 127).
DYNAMIC SELECT controller (Mercedes-AMG vehicles)133
Driving and parking
Z

Engaging park position P
All vehicles (except Mercedes-AMG vehi-
cles)
XWhen the vehicle is stationary, depress thebrake pedal.
XPress buttonC.
Mercedes-AMG vehicles
XWhen the vehicle is stationary, depress thebrake pedal.
XPress buttonC.
Engaging park position P automati-
cally
Park position]is automatically engaged if:
Ryou switch off the engine using the Smart-Key and remove the SmartKey
Ryou switch off the engine using the Smart-Key or using the Start/Stop button andopen the driver's door or front-passengerdoor
Ryou open the driver's door when the vehicleis stationary or when driving at a very lowspeed and the transmission is in position[or^
Under certain conditions, the automatic trans-mission shifts automatically to transmissionposition]if the HOLD function or Active Dis-tance Assist DISTRONIC is activated. Observethe information on the HOLD function(Ypage 165) and on Active Distance AssistDISTRONIC (Ypage 159).
Engaging reverse gear R
!Only move the automatic transmission to^when the vehicle is stationary.
XDepress the brake and keep it pressed.
XPush the selector lever forwards past thefirst point of resistance.
The ECO start/stop function is not availablewhen reverse gear is engaged. Further infor-mation on the ECO start/stop function(Ypage 129).
Shifting to neutral N
GWARNING
If children are left unsupervised in the vehi-
cle, they could:
Roperate the vehicle's equipment
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.
XWhen the vehicle is stationary, depress thebrake pedal.
XPush the selector lever forwards or back tothe first point of resistance.
If you switch the engine off with the transmis-sion in position^or[, the automatic trans-mission shifts to\\automatically.
136Automatic transmission
Driving and parking

With the SmartKey:if you then open the driv-er's door or the front-passenger door orremove the SmartKey from the ignition, theautomatic transmission shifts to]automati-cally.
With KEYLESS-GO:if you then open the driv-er's or front-passenger door, the automatictransmission shifts to]automatically.
If you want the automatic transmission toremain in neutral\\, e.g. when having thevehicle cleaned in an automatic car wash witha towing system:
XVehicles with KEYLESS-GO:remove theStart/Stop button from the ignition lock.
XInsert the SmartKey into the ignition lock.
XAll vehicles:switch the ignition on.
XDepress the brake pedal and keep itdepressed.
XShift to neutral\\.
XRelease the brake pedal.
XRelease the electric parking brake.
XSwitch off the ignition and leave the Smart-Key in the ignition lock.
Engaging drive position D
XWhen the vehicle is stationary, depress thebrake pedal.
XPush the selector lever back past the firstpoint of resistance.
Transmission positions
EPark position
This prevents the vehicle from roll-ing away when stopped.
Only shift the transmission intopositionE(Ypage 134) whenthe vehicle is stationary. The park-ing lock should not be used as abrake when parking. Always applythe electronic parking brake in addi-tion to the parking lock in order tosecure the vehicle.
If the SmartKey is removed from theignition lock, the transmission islocked.
The automatic transmission shiftstoEautomatically:
Rwhen the SmartKey is removedfrom the ignition lock
Rwhen the engine is switched offwith the transmission in positionFor:and one of thedoors is opened
In the event of a malfunction of thevehicle's electronics, the transmis-sion may lock in positionE.Have the vehicle electronicschecked immediately at a qualifiedspecialist workshop.
FReverse gear
Only shift the transmission intopositionFwhen the vehicle isstationary.
Automatic transmission137
Driving and parking
Z

Do not get into the vehicle again during the
refueling process. Otherwise, electrostatic
charge could build up again.
Do not get into the vehicle again during therefueling process. Otherwise, electrostaticcharge could build up again.
!Do not use diesel to refuel vehicles with agasoline engine. Do not switch on the igni-tion if you accidentally refuel with the wrongfuel. Otherwise, the fuel will enter the fuelsystem. Even small amounts of the wrongfuel could result in damage to the fuel sys-tem and the engine. Notify a qualified spe-cialist workshop and have the fuel tank andfuel lines drained completely.
!Overfilling the fuel tank could damage thefuel system.
!Take care not to spill any fuel on paintedsurfaces. You could otherwise damage thepaintwork.
!Use a filter when adding fuel from a fuelcan. The fuel lines and/or the fuel injectionsystem could otherwise be blocked by parti-cles from the fuel can.
If you overfill the fuel tank, fuel could sprayout when the fuel pump nozzle is removed.
For further information on fuel and fuel quality(Ypage 322).
Refueling
General information
The fuel filler flap is unlocked or locked auto-matically when you unlock or lock the vehiclewith the SmartKey or using KEYLESS-GO.
The position of the fuel filler cap is displayed

Never leave children unsupervised in the
vehicle.
!Always secure the vehicle correctly againstrolling away. Otherwise, the vehicle or itsdrivetrain could be damaged.
To ensure that the vehicle is secured againstrolling away unintentionally:
Rthe electric parking brake must be applied.
Rthe transmission must be in position].
Rthe SmartKey must be removed from theignition lock.
Rthe front wheels must be turned towards thecurb on steep uphill or downhill gradients.
Switching off the engine
GWARNING
The automatic transmission switches to neu-
tral positionNwhen you switch off the
engine. The vehicle may roll away. There is a
risk of an accident.
After switching off the engine, always switch
to parking positionP. Prevent the parked
vehicle from rolling away by applying the
parking brake.
XApply the electric parking brake.
XShift the transmission to position](Ypage 136).
XWith the SmartKey :turn the SmartKey toposition

Applying or releasing manually
XTo apply:push handleC.When the electric parking brake is applied,the redI(USA only) or$(Canadaonly) indicator lamp lights up in the instru-ment cluster.
The electric parking brake can also beapplied when the SmartKey is removed.
XTo release:pull handleC.The redI(USA only) or$(Canadaonly) indicator lamp in the instrument clus-ter goes out.
The electric parking brake can only bereleased:
Rwhen the SmartKey is in positionGin theignition lock (Ypage 126) or
Rif the ignition was switched on using theStart/Stop button
Applying automatically
The electric parking brake is automaticallyapplied when the transmission is in position]and:
Rthe engine is switched off or
Rthe driver is not wearing a seat belt and thedriver's door is opened
To prevent the electric parking brake frombeing automatically applied, pull handleC.
The electric parking brake is also applied auto-matically if:
RActive Distance Assist DISTRONIC bringsthe vehicle to a standstill or
Rthe HOLD function is keeping the vehiclestationary
In addition, at least one of the following condi-tions must be fulfilled:
Rthe engine is switched off
Rthe driver is not wearing a seat belt and thedriver's door is opened
Rthere is a system malfunction
Rthe power supply is insufficient
Rthe vehicle is stationary for a lengthy period
The redI(USA only) or$(Canadaonly) indicator lamp in the instrument clusterlights up.
The electric parking brake is not automaticallyapplied if the engine is switched off by theECO start/stop function.
Releasing automatically
The electric parking brake is released auto-matically when all of the following conditionsare fulfilled:
Rthe engine is running
RThe seat belt tongue is engaged in the beltbuckle
Rthe transmission is in position[or^andyou depress the accelerator pedal or shiftfrom position]to[or^
Rif the transmission is in position^, thetrunk lid must be closed
If the seat belt tongue is not engaged in theseat belt buckle, the following conditions mustbe fulfilled:
Rthe driver's door is closed
Ryou move the transmission out of position]or you have previously driven at a speedabove 2 mph (3 km/h)
Rif the transmission is in position^, thetrunk lid must be closed
When the electric parking brake is released,the$indicator lamp goes out in the instru-ment cluster.
Emergency braking
The vehicle can also be braked during anemergency by using the electric parking brake.
XWhile driving, push handleCof the electricparking brake.The vehicle is braked for as long as the han-dle of the electric parking brake is pressed.The longer the electric parking brake handleis depressed, the greater the braking force.
148Parking
Driving and pa rking

time. This may also occur after the vehicle hasbeen washed or driven through deep water.
You then have to depress the brake pedalmore firmly. Maintain a greater distance fromthe vehicle in front.
After driving on a wet road or having the vehi-cle washed, brake firmly while paying attentionto the traffic conditions. This will warm up thebrake discs, thereby drying them more quicklyand protecting them against corrosion.
Limited braking performance on salt-
treated roads
If you drive on salted roads, a layer of salt resi-due may form on the brake discs and brakepads. This can result in a significantly longerbraking distance.
RIn order to prevent any salt build-up, applythe brakes occasionally while paying atten-tion to the traffic conditions.
RCarefully depress the brake pedal and thebeginning and end of a journey.
RMaintain a greater distance to the vehicleahead.
Servicing the brakes
!The brake fluid level may be too low, if:
Rif the red brake warning lamp lights up inthe instrument cluster and
Ryou hear a warning tone while the engineis running
Observe additional warning messages in themultifunction display.
The brake fluid level may be too low due tobrake pad wear or leaking brake lines.
Have the brake system checked immedi-ately. Consult a qualified specialist work-shop to arrange this.
!As the ESP®system operates automati-cally, the engine and the ignition must beswitched off (the SmartKey must be in posi-tion

Setting raised level
XMake sure that the engine is running or thatit has been switched off by the ECO start/stop function.
XMake sure that a speed of 75 mph(120 km/h) is not exceeded.
XIf indicator lampDDis not lit:press but-tonC.If the engine has been switched off by theECO start/stop function, it is now restarted.
Indicator lampDlights up. The vehicle israised by 1.2 in (31 mm).
Setting the normal level
XMake sure that the engine is running or thatit has been switched off by the ECO start/stop function.
XIf indicator lampDDis lit:press buttonC.Indicator lampDgoes out. The vehicle isadjusted to normal level
The "Raised level" setting is canceled if you:
Rare driving faster than approximately75 mph (120 km/h).
Rdrive for approximately three minutes at aspeed over 50 mph (80 km/h).
Ror switch to the drive program while thevehicle is in motion.
Suspension tuning
General notes
The electro-hydraulically controlled suspensionfeatures improved driving dynamics, drivingsafety and ride comfort. You can also choosebetween a sporty, a particularly sporty, a com-fortable and a comfortable mode with curvetilting function (CURVE).
The suspension is continuously tuned to eachwheel individually and depends on:
Rthe road surface condition, e.g. bumps
Rthe vehicle load
Rthe drive program selected
Each time you start the engine with the Smart-Key or the Start/Stop button, theComfortdrive program is activated. Further informationabout starting the engine (Ypage 127).
Selecting Comfort mode
In theComfortdrive program, the drivingcharacteristics of your vehicle are more com-fortable. Select this mode if you favor a morecomfortable driving style.
XPress DYNAMIC SELECT buttonCas manytimes as necessary until theComfortdriveprogram is selected.
Selecting Sport mode
The firmer setting of the suspension tuning intheSportdrive program ensures even bettercontact with the road. Select this mode if youfavor a firmer suspension setting.
XPress DYNAMIC SELECT buttonCas manytimes as necessary until theSportdriveprogram is selected.
Selecting Sport Plus mode
The firmer setting of the suspension tuning intheSport Plusdrive program ensures evenbetter contact with the road. Select this modeif you favor a firmer suspension setting.
XPress DYNAMIC SELECT buttonCas manytimes as necessary until theSport Plusdrive program is selected.
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Driving and parking
Z

Selecting the CURVE setting
In theCURVEdrive program, the curve tiltingfunction is activated. The vehicle tilts by up to2.65 degrees into bends. The tilt function andthe comfort suspension tuning increase drivingcomfort in corners.CURVEis available in thespeed range between 9 mph (15 km/h) and112 mph (180 km/h). Select this mode onwinding roads in particular. Outside this speedrange, theCURVEdrive program is the sameas theComfortdrive program.
The curve tilting function monitors the road infront of your vehicle by means of a cameraattached at the top of the windshield. Thisfunction is automatically active if you selecttheCURVEdrive program. The system isoperational at speeds of up to 112 mph(180 km/h).
XPress DYNAMIC SELECT buttonCas manytimes as necessary until theCURVEdriveprogram is selected.
The system is deactivated if you select a differ-ent drive program.
The system may be impaired or may not func-tion if:
Ryou are driving more slowly than 9 mph(15 km/h) or faster than 112 mph(180 km/h).
Rthe vehicle is fully laden.
Ryou drive with very high lateral acceleration.
Activating the driving dynamics dis-
play
Using the driving dynamics display in the mul-timedia system display, you can see the driveprogram you selected as well as additionalinformation on the vehicle's operating state.
XSwitch on the multimedia system. Furtherinformation can be found in the Digital Oper-ator's Manual.
XPress buttonC.The driving dynamics display appears in themultimedia system display.
The following information on the vehicle'soperating status is displayed in the drivingdynamics display:
RDrive program selected (Ypage 132)
RAccelerator pedal position shown in %
RBrake pedal position shown in %
RSteering angle
RActivity of the ABC spring struts
RVehicle level display (Ypage 168)
RLevel settings animation
RG-FORCE cross displaying longitudinal andlateral acceleration (only available inSportorSport Plusdrive programs)
Active Body Control (ABC)
(Mercedes-AMG vehicles)
Setting the vehicle level
General notes
The vehicle level can be set using theDYNAMIC SELECT controller (Ypage 133) orthe on-board computer (Ypage 171). The set-ting always corresponds to the last selectedfunction.
In order to reduce fuel consumption andimprove the driving dynamics, the vehicle islowered as its speed increases. In theSportandSport Plusdrive programs it is lowered byup to 0.5 in (13 mm), and in theComfortdriveprogram by up to 0.2 in (5 mm) compared tothe normal vehicle level. As the speed isreduced, the vehicle is raised up to the setvehicle height.
Each time you start the engine with the Smart-Key or the Start/Stop button, theComfortdrive program is activated. For further informa-tion about starting the engine, see(Ypage 127).
Select the normal level for normal road surfa-ces and the raised level for driving with snowchains or on particularly poor road surfaces.
170Driving systems
Driving and parking

Important safety notes
The vehicle is slightly lowered when the engineis switched off.
GWARNING
When the vehicle is being lowered, people
could become trapped if their limbs are
between the vehicle body and the wheels or
underneath the vehicle. There is a risk of
injury.
Make sure no one is underneath the vehicle
or in the immediate vicinity of the wheel
arches when the vehicle is being lowered.
Setting raised level
XMake sure that the engine is running or thatit has been switched off by the ECO start/stop function.
XMake sure that a speed of 75 mph(120 km/h) is not exceeded.
XIf symbolDDis not shown:pressYoreon the steering wheel to select theDriveAssistDriveAssistmenu.
XPress thecordbutton to selectVehicle levelVehicle level.
XPress thevbutton.The following message appears:CVehi‐Vehi‐cle level Press 'OK' to Raisecle level Press 'OK' to Raise.
XPress thevbutton.If the engine has been switched off by theECO start/stop function, it is now restarted.
SymbolDappears. The vehicle height isadjusted to raised level.
Setting the normal level
XMake sure that the engine is running or thatit has been switched off by the ECO start/stop function.
XIf symbolDDis shown:pressYoreon the steering wheel to select theDriveAssistDriveAssistmenu.
XPress thecordbutton to selectVehicle levelVehicle level.
XPress thevbutton.The following message appears:CVehi‐Vehi‐cle level Press 'OK' to Lowercle level Press 'OK' to Lower.
XPress thevbutton.IconDis faded out. The vehicle is adjustedto normal level
The "Raised level" setting is canceled if you:
Rare driving faster than approximately75 mph (120 km/h).
Rdrive for approximately three minutes at aspeed over 50 mph (80 km/h).
Ror switch to the drive program while thevehicle is in motion.
Suspension tuning
General notes
The electro-hydraulically controlled suspensionfeatures improved driving dynamics, drivingsafety and ride comfort. You can also choosebetween a particularly sporty or a comfortabletuning.
The suspension is continuously tuned to eachwheel individually and depends on:
Rthe road surface condition, e.g. bumps
Rthe vehicle load
Rthe drive program selected
Your selection remains saved even if youremove the key from the ignition lock.
Driving systems171
Driving and pa rking
Z