2019 MERCEDES-BENZ SL CLASS stop start

Up to a speed of approximately 44 mph(70 km/h), Active Brake Assist with cross-traf-fic function may react to:
Rstationary objects in the path of your vehi-cle, e.g. stopped or parked vehicles
Rpedestrians in the path of your vehicle
iIf there is an increased risk of a collision,preventive passenger protection measures
(PRE-SAFE®) are triggered (Ypage 55).
If the risk of collision with the vehicle in frontremains and you do not brake, take evasiveaction or accelerate significantly, the vehiclemay perform automatic emergency braking, upto the point of full brake application. Auto-matic emergency braking is not performeduntil immediately prior to an imminent acci-dent.
You can prevent the intervention of ActiveBrake Assist with cross-traffic function at anytime by:
Rdepressing the accelerator pedal further
Ractivating kickdown
Rreleasing the brake pedal
The braking application of Active Brake Assistwith cross-traffic function is ended automati-cally if:
Ryou maneuver to avoid the obstacle
Rthere is no longer a risk of collision
Ran obstacle is no longer detected in front ofyour vehicle
STEER CONTROL
General information
STEER CONTROL helps you by transmitting anoticeable steering force to the steering wheelin the direction required for vehicle stabiliza-tion.
This steering assistance is provided in particu-lar if:
Rboth right wheels or both left wheels are ona wet or slippery road surface when youbrake
Rthe vehicle starts to skid
Important safety notes
iObserve the "Important safety notes" sec-tion (Ypage 60).
No steering support is provided from STEERCONTROL, if:
RESP®is deactivated
RESP®is malfunctioning
Rthe steering is faulty
If ESP®is malfunctioning, you will be assistedfurther by the electrical power steering.
Protection against theft
Immobilizer
XTo activate with the SmartKey:removethe SmartKey from the ignition lock.
XTo activate with KEYLESS-GO:switch theignition off and open the driver's door.
XTo deactivate:switch on the ignition.
The immobilizer prevents your vehicle frombeing started without the correct SmartKey.
When leaving the vehicle, always take theSmartKey with you and lock the vehicle. Theengine can be started by anyone with a validSmartKey that is left inside the vehicle.
iThe immobilizer is always deactivatedwhen you start the engine.
In the event that the engine cannot be star-ted (yet the vehicle's battery is charged),the system is not operational. Contact anauthorized Mercedes-Benz Center or call1-800-FOR-MERCedes (in the USA) or1-800-387-0100 (in Canada).
ATA (anti-theft alarm system)
72Protection against theft
Safety

XTo arm:lock the vehicle with the SmartKeyor KEYLESS-GO.Indicator lampCflashes. The alarm systemis armed after approximately 15 seconds.
XTo switch off:unlock the vehicle with theSmartKey or KEYLESS-GO.
A visual and audible alarm is triggered if thealarm system is armed and you open:
Ra door
Rthe vehicle with the mechanical key
Rthe trunk lid
Rthe hood
Rthe glove compartment
Rthe stowage space under the armrest
Ra stowage compartment in the rearpassenger compartment
XTo stop the alarm with the SmartKey:press the6or7button on theSmartKey.The alarm is stopped.
or
XInsert the SmartKey into the ignition lock.The alarm is stopped.
XTo stop the alarm using KEYLESS-GO:grasp the outside door handle. The Smart-Key must be outside the vehicle.The alarm is stopped.
or
XPress the Start/Stop button on the dash-board. The SmartKey must be inside thevehicle.The alarm is stopped.
The alarm is not stopped, even if you close theopen door that triggered it, for example.
If the alarm stays on for more than30 seconds, the Mercedes me connectemergency call system automatically sendsa message to the Customer Center.
This is done either by text message or dataconnection. The emergency call systemsends the message or data provided that:
Ryou have subscribed to Mercedes meconnect
Rthe Mercedes me connect service hasbeen activated properly
Rthe necessary mobile phone network isavailable
Protection against theft73
Safety
Z

HANDS-FREE ACCESS
General notes
With KEYLESS-GO and HANDS-FREE ACCESS,you can open or close the trunk lid or stop theprocedure without using your hands. This isuseful if you have your hands full. To do this,make a kicking movement under the bumperwith your foot.
Observe the following points:
RCarry your KEYLESS-GO key about your per-son. The SmartKey must be at the rear ofthe vehicle in the detection range of KEY-LESS-GO.
RWhen making the kicking movement, makesure that you are standing firmly on theground and that there is sufficient clearanceto the rear of the vehicle. You could other-wise lose your balance, for example on ice.
Important safety notes
GWARNING
The vehicle exhaust system can become
very hot. If you use HANDS-FREE ACCESS,
you could burn yourself by touching the
exhaust system. There is a risk of injury.
Always ensure that you make the kicking
movement only within the detection range of
the sensors.
!If the SmartKey is within the rear detectionrange of KEYLESS-GO, the following situa-tions, for example, could lead to the unin-tentional opening of the trunk lid:
Rwhen using an automatic car wash
Rwhen using a power washer
Make sure that the SmartKey is at least10 ft (3 m) away from the vehicle.
RAlways ensure that you make the kickingmovement only within the detection rangeof sensorsC.
RStand at least 12 in (30 cm) away from therear area while doing so.
RDo not come into contact with the bumperwhile making the kicking movement. Other-wise, the sensors may not function cor-rectly.
RHANDS-FREE ACCESS does not functionduring engine start.
RDirt caused by road salt and snow build-uparound sensorsCmay restrict functional-ity.
RUsing the HANDS-FREE ACCESS with aprosthetic leg may restrict functionality.
RIf a KEYLESS-GO key is at the rear of thevehicle in the detection range of KEYLESS-GO, HANDS-FREE ACCESS could be trig-gered. The trunk lid could thus be opened orclosed unintentionally, for example, if you:
-sit on the edge of the trunk.
-set something down or lift something upbehind the vehicle.
-polish the rear of the vehicle.
Do not carry the KEYLESS-GO key aboutyour person in these situations or in situa-tions similar to these. This will prevent theunintentional opening/closing of the trunklid.
84Trunk
Opening and closing

Opening and closing the side win-
dows
Opening and closing the side windows
in the front
The switches for the side windows are locatedon the driver's door. There is also a switch forthe front-passenger side window on the front-passenger door.
The switches on the driver's door take prece-dence.
CLeft
DRight
XTurn the SmartKey to positionGorHinthe ignition lock.
XTo open manually:press and hold the cor-responding switch.
XTo open fully:press the switch beyond thepressure point and release it.Automatic operation is started.
XTo close manually:pull the correspondingswitch and hold it.
XTo close fully:pull the switch beyond thepressure point and release it.Automatic operation is started.
XTo interrupt automatic operation:pressor pull the corresponding switch again.
You can continue to operate the side windowsafter you switch off the engine. This function isavailable for up to five minutes or until thedriver's or front-passenger door is opened.
Opening/closing the rear side win-
dows
XTo open:open the front side window on thecorresponding side (Ypage 88).
XPress the corresponding switch again andrelease.The corresponding rear side window opensfully.
XTo stop the rear side windows:briefly pullthe corresponding switch up and release.
XTo close:close the front side window on thecorresponding side (Ypage 88).
XPull the respective switch and hold it.The corresponding rear side window willcontinue to close until you release theswitch.
Opening and closing all side win-
dows
Using the switch on the center con-
sole
GWARNING
While opening the side windows, body parts
in the closing area could become trapped.
There is a risk of injury.
Make sure that no body parts are in close
proximity during the closing procedure. If
somebody becomes trapped, release the
switch or press the switch down to open the
side window again.
You can use the switch on the center consoleto close all side windows simultaneously.
XOpen the cover in the lower center console.The switch for all side windows is under thecover.
88Side windows
Opening and closing

seat belt guide. This makes it easier to movethe seats forward.
Before you drive off, the seat belt must beinserted into the seat belt guide.
Observe the safety guidelines for seat belts(Ypage 42).
XTo remove:open up magnetic headDandfold the tab up in the direction of the arrow.
XTake the seat belt out of seat belt guideC.
XTo insert:fold the tab up in the direction ofthe arrow.
XInsert the seat belt back into the seat beltguide and fold the tab back down.
Adjusting the head restraints
GWARNING
You could lose control of your vehicle if you
do the following while driving:
Radjust the driver's seat, head restraint,
steering wheel or mirrors
Rfasten the seat belt
There is a risk of an accident.
Adjust the driver's seat, head restraint,
steering wheel and mirror and fasten your
seat belt before starting the engine.
XTo adjust the head restraint height:slidethe switch for the head restraint adjust-mentCup or down in the direction of thearrow.
Moving the seats forward/back
GWARNING
When you adjust a seat, you or other vehicle
occupants could become trapped, e.g. on
the seat guide rail. There is a risk of injury.
When adjusting a seat, make sure that no
one has any body parts in the sweep of the
seat.
!Make sure that there are no containers inthe cup holder and no objects in the foot-well or behind the seats when adjusting theseats. Otherwise, you could damage theseats and the objects.
You can move the seat forwards in order togain better access to the rear compartment,e.g. to reach the stowage compartment in therear passenger compartment .
XRemove the seat belt from the seat beltguide (Ypage 99).
XTo move the seat forwards:pressdonswitchC.The seat moves automatically to the fore-most position.
XTo move the seat backwards:presscon switchC.The seat moves back to the previous posi-tion.
XTo stop seat movement:pressdorcin the opposite direction.
Adjusting the multicontour seat
You can adjust the multicontour seat usingCOMAND (see Digital Operator's Manual).
Adjusting the active multicontour
seat
The active multicontour seat can be adjustedusing COMAND (see the Digital Operator'sManual).
Adjusting the 4-way lumbar support
You can adjust the 4-way lumbar supportusing COMAND (see the Digital Operator'sManual).
100Seats
Seats, steering wheel and mirrors

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

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