2019 MERCEDES-BENZ SL CLASS ignition

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

SmartKey
Important safety notes
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.
GWARNING
If you attach heavy or large objects to the
SmartKey, the SmartKey could be uninten-
tionally turned in the ignition lock. This
could cause the engine to be switched off.
There is a risk of an accident.
Do not attach any heavy or large objects to
the SmartKey. Remove any bulky key rings
before inserting the SmartKey into the igni-
tion lock.
!Keep the SmartKey away from strong mag-netic fields. Otherwise, the remote controlfunction could be affected.
Strong magnetic fields can occur in thevicinity of powerful electrical installations.
Do not keep the SmartKey:
Rwith electronic devices, e.g. a mobile phoneor another SmartKey
Rwith metallic objects, e.g. coins or metal foil
Rinside metallic objects, e.g. a metal case
This can affect the functionality of theSmartKey.
SmartKey functions
C7Locks the vehicle
DTOpens/closes the trunk lid

Locking/unlocking centrally
You can start, lock or unlock the vehicle usingKEYLESS-GO. To do this, you only need carrythe SmartKey with you. You can combine thefunctions of KEYLESS-GO with those of a con-ventional SmartKey. Unlock the vehicle byusing KEYLESS-GO, for instance, and lock itusing the7button on the SmartKey.
The driver's door and the door at which thehandle is used, must both be closed. TheSmartKey must be outside the vehicle. Whenlocking or unlocking with KEYLESS-GO, thedistance between the key and the correspond-ing door handle must not be greater than 3 ft(1 m).
A check which periodically establishes a radioconnection between the vehicle and theSmartKey determines whether a valid Smart-Key is in the vehicle. This occurs, for example:
Rwhen starting the engine
Rwhile driving
Rwhen using HANDS-FREE ACCESS
Rwhen the external door handles are touched
XTo unlock the vehicle:touch the inner sur-face of the door handle.
XTo lock the vehicle:touch sensor sur-faceCorD.
Make sure that you do not touch the innersurface of the door handle.
XConvenience closing feature:touchrecessed sensor surfaceDfor an extendedperiod.
Further information on the convenienceclosing feature (Ypage 89).
Deactivating and activating
If you do not intend to use a SmartKey for anextended period of time, you can deactivatethe KEYLESS-GO function of the key. TheSmartKey will then use very little power,thereby conserving battery power. For the pur-poses of activation/deactivation, the vehiclemust not be nearby.
XTo deactivate:press the7button onthe SmartKey twice in rapid succession.The battery check lamp (Ypage 77) of theSmartKey flashes twice briefly and lights uponce, then KEYLESS-GO is deactivated.
XTo activate:press any button on the Smart-Key.
or
XInsert the SmartKey into the ignition lock.KEYLESS-GO and all of its associated fea-tures are available again.
Changing the settings of the locking
system
You can change the settings of the lockingsystem. This means only the driver's door, thelockable stowage compartments in the vehicleinterior and the fuel filler flap are unlockedwhen the vehicle is unlocked. This is useful ifyou frequently travel alone.
XTo change the setting:press and holddown the6and7buttons simultane-ously for about six seconds until the batteryindicator lamp (Ypage 77) flashes twice.
If the setting of the locking system is changedwithin the signal range of the vehicle, pressingthe7or6button:
Rlocks or
Runlocks the vehicle
The SmartKey now functions as follows:
XTo unlock:press the6button once.
XTo unlock centrally:press the6buttontwice.
XTo lock centrally:press the7button.
SmartKey75
Opening and closing
Z

ProblemPossible causes/consequences andPPSolutions
The engine cannot bestarted using the Smart-Key.
The on-board voltage is too low.
XSwitch off non-essential consumers, e.g. seat heating or interiorlighting, and try to start the engine again.
If this does not work:
XCheck the starter battery and charge it if necessary(Ypage 284).
or
XJump-start the vehicle (Ypage 285).
or
XConsult a qualified specialist workshop.
The engine cannot bestarted using KEYLESS-GO. The SmartKey is inthe vehicle.
The vehicle is locked.
XUnlock the vehicle and try to start the vehicle again.
The SmartKey battery is discharged or nearly discharged.
XCheck the SmartKey battery (Ypage 77) and replace it if neces-sary (Ypage 77).
If this does not work:
XStart your vehicle with the SmartKey in the ignition lock.
There is interference from a powerful source of radio waves.
XStart your vehicle with the SmartKey in the ignition lock.
You have lost a Smart-Key.XHave the SmartKey deactivated at a qualified specialist work-shop.
XReport the loss immediately to the vehicle insurers.
XIf necessary, have the locks changed as well.
You have lost themechanical key.XReport the loss immediately to the vehicle insurers.
XIf necessary, have the locks changed as well.
The side windows can-not be opened or closedusing the convenienceopening/closing fea-ture.
The SmartKey battery is discharged or nearly discharged.
XCheck the SmartKey battery (Ypage 77) and replace it if neces-sary (Ypage 77).
Doors
Important safety notes
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.
Doors79
Opening and closing
Z

Automatic locking feature
XTo deactivate:press and hold buttonCforabout five seconds until a tone sounds.
XTo activate:press and hold buttonDforabout five seconds until a tone sounds.
If you press one of the two buttons and do nothear a tone, the relevant setting has alreadybeen selected.
The vehicle is locked automatically when theignition is switched on and the wheels areturning.
You could therefore lock yourself out if:
Rthe vehicle is being pushed.
Rthe vehicle is being towed.
Rthe vehicle is on a roller dynamometer.
You can also switch the automatic lockingfunction on and off using the on-board com-puter (Ypage 201).
Power closing
Power closing pulls the doors and trunk lidinto their locks automatically even if they areonly partly closed.
XPower closing feature (doors):push thedoor past the first detent position into thelock.Power closing will pull the door fully closed.
XTo power close the trunk lid:lightly pushthe trunk lid closed.The power closing function pulls the trunklid closed.
Unlocking/locking the driver's door
using the mechanical key
iIf you want to centrally lock the vehicleusing the mechanical key, begin by pressingthe locking button for the interior lockingmechanism while the driver's door is open.Then lock the driver's door using themechanical key.
XTo unlock:turn the mechanical key coun-ter-clockwise as far as it will go to positionG.
XTo lock:turn the mechanical key clockwiseas far as it will go to positionG.
If you use the mechanical key to unlock andopen the driver's door, the anti-theft alarmsystem will be triggered. Switch off the alarm(Ypage 72).
Trunk
Important safety notes
GWARNING
If objects, luggage or loads are not secured
or not secured sufficiently, they could slip,
tip over or be flung around and thereby hit
vehicle occupants. There is a risk of injury,
particularly in the event of sudden braking
or a sudden change in direction.
Always store objects so that they cannot be
flung around. Secure objects, luggage or
loads against slipping or tipping before the
journey.
!The trunk lid swings upwards whenopened. Therefore, make sure that there issufficient clearance above the trunk lid.
Trunk81
Opening and closing
Z

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

XTo open all side windows:press buttonCto the point of resistance.
XTo open all side windows fully:pressswitchCbeyond the point of resistance.
XTo close all side windows:pull switchC.All side windows begin the closing proce-dure simultaneously. The rear side windowsclose after the front side windows.
If, after opening the windows, you close oneside window using the switch in the door con-trol panel:
Rthe front side window closes first and
Rthen the corresponding rear side windowcloses.
Convenience closing with KEYLESS-GO
GWARNING
When using the convenience closing feature,
parts of the body could be trapped in the
closing area when a side window is being
closed. There is a risk of injury.
Observe the complete closing procedure
when the convenience closing feature is
operating. Make sure that no body parts are
in close proximity during the closing proce-
dure.
Proceed as follows if someone is trapped:
XRelease the recessed sensor surface on thedoor handle.
XImmediately pull and hold the door handleand keep the door handle pulled.The side windows open.
With KEYLESS-GO you can close all side win-dows simultaneously. The KEYLESS-GO keymust be outside the vehicle. All the doorsmust be closed.
XTouch recessed sensor surfaceCon thedoor handle until the side windows are fullyclosed.
iMake sure you only touch recessed sensorsurfaceC.
XTo interrupt convenience closing:releaserecessed sensor surfaceCon the doorhandle.
Resetting the side windows
If a side window can no longer be closed fully,you must reset it.
XClose all the doors.
XTurn the SmartKey to positionGorHinthe ignition lock.
XPull the corresponding switch on the doorcontrol panel until the side window is com-pletely closed (Ypage 88).
XHold the switch for an additional second.
If the side window opens again slightly:
XImmediately pull the corresponding switchon the door control panel until the side win-dow is completely closed (Ypage 88).
XHold the switch for an additional second.If the respective side window remainsclosed after the button is released, then ithas been set correctly. If this is not thecase, repeat the steps above.
Side windows89
Opening and closing
Z