engine MERCEDES-BENZ SL CLASS 2019 Manual Online

automatic headlamp mode is activated(Ypage 109).
Rexterior lighting delayed switch-off:theexterior lighting remains lit for 60 secondsafter the engine is switched off. If you closeall the doors and the trunk lid, the exteriorlighting goes off after 15 seconds.
Depending on your vehicle's equipment, whenthe surround lighting and delayed switch-offexterior lighting are on, the following light up:
Rparking lamps
Rlow-beam headlamps
Rdaytime running lamps
Rside marker lamps
Rsurround lighting in the exterior mirrors
Activating/deactivating the interior
lighting delayed switch-off
If you activate theInterior LightingInterior LightingDelayDelayfunction, the interior lighting remainson for 20 seconds after you remove the Smart-Key from the ignition lock.
XPress theYorebutton on the steer-ing wheel to select theSett.Sett.menu.
XPress thedorcbutton to select theLightLightsubmenu.
XPressvto confirm.
XPress thedorcbutton to select theInterior Lighting DelayInterior Lighting Delayfunction.When theInterior Lighting DelayInterior Lighting Delayfunc-tion is activated, the vehicle interior is dis-played in orange in the multifunction dis-play.
XPress thevbutton to save the setting.
Vehicle
Activating/deactivating the automatic
door locking mechanism
If you activate theAutomatic Door LockAutomatic Door Lockfunction, the vehicle is centrally locked abovea speed of approximately 9 mph (15 km/h).
XPress theYorebutton on the steer-ing wheel to select theSett.Sett.menu.
XPress thedorcbutton to select theVehicleVehiclesubmenu.
XPressvto confirm.
XPress thedorcbutton to select theAutomatic Door LockAutomatic Door Lockfunction.When theAutomatic Door LockAutomatic Door Lockfunctionis activated, the multifunction display showsthe left-hand vehicle door in orange.
XPress thevbutton to save the setting.
For further information on the automatic lock-ing feature, see (Ypage 81).
Activating/deactivating the acoustic
locking verification signal
If you switch on theAcoustic LockAcoustic Lockfunction,an acoustic signal sounds when you lock thevehicle.
XPress theYorebutton on the steer-ing wheel to select theSett.Sett.menu.
XPress thedorcbutton to select theVehicleVehiclesubmenu.
XPressvto confirm.
XPress thedorcbutton to select theAcoustic LockAcoustic Lockfunction.If theAcoustic LockAcoustic Lockfunction is activated,the7symbol in the multifunction displaylights up orange.
XPress thevbutton to save the setting.
Comfort
Activating/deactivating the EASY-
ENTRY/EXIT feature
GWARNING
When the EASY-ENTRY/EXIT feature adjusts
the steering wheel, you and other vehicle
occupants – particularly children – could
become trapped. There is a risk of injury.
While the EASY-ENTRY/EXIT feature is mak-
ing adjustments, make sure that no one has
any body parts in the sweep of the steering
wheel.
If somebody becomes trapped:
Rpress one of the memory function posi-
tion buttons, or
Rmove the switch for steering wheel
adjustment in the opposite direction to
that in which the steering wheel is mov-
ing.
The adjustment process is stopped.
Menus and submenus201
On-board computer and displays
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Engine and transmission oil tempera-ture:when the engine and transmission areat normal operating temperature, oil tem-perature

Stopping the RACE TIMER
XPress the8button on the steeringwheel.
XConfirmYesYeswithv.
The RACE TIMER interrupts timing if you stopthe vehicle and turn the SmartKey to positionGin the ignition lock. If you turn the Smart-Key to position3and then pressvto con-
firmStartStart, timing is continued.
Resetting the current lap
XStop the RACE TIMER.
XPress theYorebutton to selectReset LapReset Lap.
XPressvto reset the lap time to "0".
Deleting all laps
If you switch off the engine, the RACE TIMER isreset to "0" after 30 seconds. All laps aredeleted.
You cannot delete individual stored laps. If youhave stopped 16 laps, the current lap does nothave to be reset.
XReset the current lap.
XPressvto confirmResetReset.Reset Race-Timer?Reset Race-Timer?appears in the multi-function display.
XPress thedbutton to selectYesYesandpress thevbutton to confirm.All laps are deleted.
Overall statistics
CRACETIMER overall evaluation
DTotal time driven

Display messagesPossible causes/consequences andPPSolutions
The yellow$warning lamp lights up. The redI(USA only)or$(Canada only) indicator lamp flashes for about ten secondsafter the electric parking brake has been applied or released. It thengoes out or remains lit.
The electric parking brake is malfunctioning.
XSwitch off the ignition and turn it back on.
XApply the electric parking brake.
If it is not possible to apply the electric parking brake:
XShift the transmission to position].
XVisit a qualified specialist workshop.
If it is not possible to release the electric parking brake:
XRelease the electric parking brake automatically (Ypage 147).
If the electric parking brake still cannot be released:
XConsult a qualified specialist workshop.
The yellow$warning lamp lights up. If you manually apply orrelease the electric parking brake, the redI(USA only) or$(Canada only) indicator lamp flashes.
The electric parking brake is malfunctioning. It is not possible toapply the electric parking brake manually.
XShift the transmission to position], as the electric parkingbrake is not applied automatically.
XVisit a qualified specialist workshop.
I(USA
only)$(Canada
only)
Parking Brake Inop‐Parking Brake Inop‐erativeerative
The yellow$warning lamp lights up. The redI(USA only)or$(Canada only) indicator lamp flashes for about ten secondsafter the electric parking brake has been applied or released. It thengoes out or remains lit.
The electric parking brake is malfunctioning, e.g. because of over-voltage or undervoltage.
XRemove the cause for the overvoltage or undervoltage, e.g. bycharging the battery or restarting the engine.
XApply or release the electric parking brake.
If it remains impossible to apply or release the electric parkingbrake:
XSwitch off the ignition and turn it back on.
XApply or release the electric parking brake.
If the electric parking brake still cannot be released:
XConsult a qualified specialist workshop.
If the electric parking brake still cannot be applied:
XVisit a qualified specialist workshop.
210Displaymessages
On-b oard computer and displays

Display messagesPossible causes/consequences andPPSolutions
The yellow$warning lamp lights up and the redI(USAonly) or$(Canada only) indicator lamp flashes.
It is not possible to apply the electric parking brake manually.
XShift the transmission to position].
XVisit a qualified specialist workshop.
'(USA only)
M(Canada only)
Check Brake FluidCheck Brake FluidLevelLevel
There is not enough brake fluid in the brake fluid reservoir.
In addition, the'(USA only) orM(Canada only) warninglamp lights up in the instrument cluster and a warning tone sounds.
GWARNING
The braking effect may be impaired.
There is a risk of an accident.
XPull over and stop the vehicle safely as soon as possible, payingattention to road and traffic conditions. Do not continue drivingunder any circumstances.
XSecure the vehicle against rolling away (Ypage 146).
XConsult a qualified specialist workshop.
XDo not add brake fluid. This does not correct the malfunction.
&
Check Brake PadCheck Brake PadWearWear
The brake pads/linings have reached their wear limit.
XVisit a qualified specialist workshop.
PRE-SAFE Inopera‐PRE-SAFE Inopera‐tive See Opera‐tive See Opera‐tor's Manualtor's Manual
Important functions of PRE-SAFE®have failed. All other occupantsafety systems, e.g. air bags, remain available.
XVisit a qualified specialist workshop immediately.
Active BrakeActive BrakeAssist FunctionsAssist FunctionsCurrently LimitedCurrently LimitedSee Operator's Man‐See Operator's Man‐ualual
Active Brake Assist is temporarily inoperative.
Possible causes are:
Rthe radar sensor system is temporarily inoperative, e.g. due toelectromagnetic radiation emitted by nearby TV or radio stationsor other sources of electromagnetic radiation
Rthe system is outside the operating temperature range
Rthe on-board voltage is too low
When the causes stated above no longer apply, the display messagedisappears.
Active Brake Assist is operational again.
If the display message does not disappear:
XPull over and stop the vehicle safely as soon as possible, payingattention to road and traffic conditions.
XSecure the vehicle against rolling away (Ypage 146).
XRestart the engine.
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On-b oard computer and displays
Z

Display messagesPossible causes/consequences andPPSolutions
Active BrakeActive BrakeAssist FunctionsAssist FunctionsLimited See Opera‐Limited See Opera‐tor's Manualtor's Manual
Active Brake Assist is unavailable due to a malfunction.
XVisit a qualified specialist workshop.
Active BrakeActive BrakeAssist FunctionsAssist FunctionsCurrently LimitedCurrently LimitedSee Operator's Man‐See Operator's Man‐ualual
Active Brake Assist with cross-traffic function or PRE‑SAFE®PLUS isdeactivated and temporarily inoperative.
Possible causes are:
Rthe system is outside the operating temperature range
Rthe on-board voltage is too low
Rthe radar sensor system is temporarily inoperative, e.g. due toelectromagnetic radiation emitted by nearby TV or radio stationsor other sources of electromagnetic radiation
RMercedes-AMG vehicles: ESP®is deactivated
When the causes stated above no longer apply, the display messagedisappears.
Active Brake Assist with cross-traffic function and PRE‑SAFE®PLUSare functional again.
XPull over and stop the vehicle safely as soon as possible, payingattention to road and traffic conditions.
XSecure the vehicle against rolling away (Ypage 146).
XRestart the engine.
XMercedes-AMG vehicles: switch ESP®on again (Ypage 68).
Active BrakeActive BrakeAssist FunctionsAssist FunctionsLimited See Opera‐Limited See Opera‐tor's Manualtor's Manual
Active Brake Assist with cross-traffic function or PRE‑SAFE®PLUS isnot available due to a malfunction.
XVisit a qualified specialist workshop.
212Displaymessages
On-b oard computer and displays

Display messagesPossible causes/consequences andPPSolutions
Radar SensorsRadar SensorsDirty See Opera‐Dirty See Opera‐tor's Manualtor's Manual
The radar sensor system is malfunctioning.
Possible causes are:
Rdirt on sensors
Rheavy rain or snow
Rwhen driving on inter-urban roads without traffic or infrastructure,e.g. in desert-like areas
At least one driving system or driving safety system is malfunction-ing or is temporarily unavailable:
RActive Brake Assist
RActive Brake Assist with cross-traffic function
RActive Distance Assist DISTRONIC
RActive Steering Assist
RActive Lane Keeping Assist
RActive Blind Spot Assist
RPRE-SAFE®PLUS
If the radar sensor system in front is dirty, Active Blind Spot Assistwill not perform a course-correcting brake application.
Once the cause of the problem is no longer present, the driving anddrive safety systems will be available again. The display messagedisappears.
If the display message does not disappear:
XPull over and stop the vehicle safely as soon as possible, payingattention to road and traffic conditions.
XSecure the vehicle against rolling away (Ypage 146).
XSwitch off the engine.
XClean all sensors (Ypage 275).
XRestart the engine.The display message disappears.
g
Malfunction Ser‐Malfunction Ser‐vice Requiredvice Required
The roll bars are faulty.
GWARNING
The roll bars will then possibly not be extended in the event of anaccident.
There is an increased risk of injury.
XVisit a qualified specialist workshop immediately.
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Display messagesPossible causes/consequences andPPSolutions
Adaptive HighbeamAdaptive HighbeamAssist CurrentlyAssist CurrentlyUnavailable SeeUnavailable SeeOperator's ManualOperator's Manual
Adaptive Highbeam Assist is deactivated and temporarily inopera-tive.
Possible causes are:
RThe windshield in the camera's field of vision is dirty.
RVisibility is impaired due to heavy rain, snow or fog.
XClean the windshield.
If the system detects that the camera is fully operational again, theAdaptive Highbeam Assist Now AvailableAdaptive Highbeam Assist Now Availablemessage is dis-played.
Adaptive Highbeam Assist is operational again.
Adaptive HighbeamAdaptive HighbeamAssist InoperativeAssist InoperativeAdaptive Highbeam Assist is faulty.
XVisit a qualified specialist workshop.
Engine
Display messagesPossible causes/consequences andPPSolutions

Display messagesPossible causes/consequences andPPSolutions
=
Stop Vehicle SeeStop Vehicle SeeOperator's ManualOperator's Manual
The battery is no longer being charged and the condition of chargeis too low.
A warning tone also sounds.
XPull over and stop the vehicle safely and switch off the engine,paying attention to road and traffic conditions.
XSecure the vehicle against rolling away (Ypage 146).
XObserve the instructions in the=See Operator's ManualSee Operator's Manualdisplay message.
XConsult a qualified specialist workshop.

Display messagesPossible causes/consequences andPPSolutions
Active Lane Keep‐Active Lane Keep‐ing Assist Cur‐ing Assist Cur‐rently Unavailablerently UnavailableSee Operator's Man‐See Operator's Man‐ualual
Active Lane Keeping Assist is deactivated and temporarily inopera-tive.
Possible causes are:
Rthe windshield in the camera's field of vision is dirty
Rvisibility is impaired due to heavy rain, snow or fog
Rthere have been no lane markings for an extended period
Rthe lane markings are worn away, dark or covered up, e.g. by dirtor snow
When the causes stated above no longer apply, the display messagedisappears.
Active Lane Keeping Assist is operational again.
If the display message does not disappear:
XPull over and stop the vehicle safely as soon as possible, payingattention to road and traffic conditions.
XSecure the vehicle against rolling away (Ypage 146).
XClean the windshield.
Active Lane Keep‐Active Lane Keep‐ing Assist Inopera‐ing Assist Inopera‐tivetive
Active Lane Keeping Assist is malfunctioning.
XVisit a qualified specialist workshop.
Active Blind SpotActive Blind SpotAssist CurrentlyAssist CurrentlyUnavailable SeeUnavailable SeeOperator's ManualOperator's Manual
Active Blind Spot Assist is temporarily inoperative.
Possible causes are:
Rthe radar sensor system is outside the operating temperaturerange
Rthe radar sensor system is temporarily inoperative, e.g. due toelectromagnetic radiation emitted by nearby TV or radio stationsor other sources of electromagnetic radiation
The yellowcindicator lamps also light up in the exterior mirrors.
When the causes stated above no longer apply, the display messagedisappears.
Active Blind Spot Assist is operational again.
If the display message does not disappear:
XPull over and stop the vehicle safely as soon as possible, payingattention to road and traffic conditions.
XSecure the vehicle against rolling away (Ypage 146).
XClean the sensors (Ypage 275).
XRestart the engine.
Active Blind SpotActive Blind SpotAssist InoperativeAssist InoperativeActive Blind Spot Assist is malfunctioning.
The yellowcindicator lamps also light up in the exterior mirrors.
XVisit a qualified specialist workshop.
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On-b oard computer and displays
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