2019 MERCEDES-BENZ SL CLASS keyless

Problems with the SmartKey
ProblemPossible causes/consequences andPPSolutions
You can no longer lockor unlock the vehicleusing the SmartKey.
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:
XUnlock (Ypage 81) or lock (Ypage 81) the vehicle using themechanical key.
There is interference from a powerful source of radio waves.
XUnlock (Ypage 81) or lock (Ypage 81) the vehicle using themechanical key.
The SmartKey is faulty.
XUnlock (Ypage 81) or lock (Ypage 81) the vehicle using themechanical key.
XHave the SmartKey checked at a qualified specialist workshop.
You can no longer lockor unlock the vehicleusing KEYLESS-GO.
KEYLESS-GO was deactivated.
XReactivate KEYLESS-GO (Ypage 74).
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:
XUnlock (Ypage 81) or lock (Ypage 81) the vehicle using themechanical key.
There is interference from a powerful source of radio waves.
XUnlock (Ypage 81) or lock (Ypage 81) the vehicle using themechanical key.
KEYLESS-GO is malfunctioning.
XLock/unlock the vehicle using the remote control function of theSmartKey.
XHave the vehicle and SmartKey checked at a qualified specialistworkshop.
If the vehicle can also not be locked/unlocked using the remotecontrol function:
XUnlock (Ypage 81) or lock (Ypage 81) the vehicle using themechanical key.
XHave the vehicle and SmartKey checked at a qualified specialistworkshop.
78SmartKey
Opening and closing

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

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.
Unlocking and opening doors from
the inside
!The side windows will not open/close ifthe battery is discharged or if the side win-dows have iced up. It will then not be possi-ble to close the door. Do not attempt toforce the door closed. You could otherwisedamage the door or the side window.
You can open a door from inside the vehicleeven if it has been locked.
If the vehicle has previously been locked fromthe outside, opening a door from the insidewill trigger the anti-theft alarm system. Switchoff the alarm (Ypage 72).
XPull door handleD.If the door is locked, locking knobCpopsup. The door is unlocked and can beopened.
When a door is opened, the side window onthat side opens slightly. When the door isclosed, the side window closes again.
Centrally locking and unlocking the
vehicle from the inside
You can centrally lock or unlock the vehiclefrom the inside. For example, you can unlock
the front-passenger door from the inside orlock the vehicle before you pull away.
XTo unlock:press buttonC.
XTo lock:press buttonD.If the front-passenger door is closed, thevehicle locks.
The central locking button does not lock orunlock the fuel filler flap or the stowage com-partments, such as the glove box.
You cannot unlock the vehicle centrally fromthe inside if the vehicle has been locked withthe SmartKey or KEYLESS-GO.
You can open a door from inside the vehicleeven if it has been locked.
If a locked door is opened from the inside, theprevious unlock status of the vehicle will betaken into consideration if:
Rthe vehicle was locked using the lockingbutton for the central locking, or
Rif the vehicle was locked automatically
The vehicle will be fully unlocked if it had pre-viously been fully unlocked. If only the driver'sdoor had been previously unlocked, only thedoor which has been opened from the inside isunlocked.
80Doors
Opening and closing

!Only close the trunk once the roof is low-ered completely. Otherwise, you could dam-age the roof.
If you close the trunk lid before the roof islowered completely, the loading aid switchlights up and a warning tone sounds.
The opening dimensions of the trunk lid can befound in the "Vehicle data" section(Ypage 326).
With the roof open, you can use the loadingaid to raise the folded roof in the trunk tomake loading easier (Ypage 251). The trunkpartition opens automatically.
You can unlock the trunk lid if the vehicle isstationary and the roof is completely open orclosed.
Do not leave the SmartKey in the trunk. Youcould otherwise lock yourself out.
The trunk lid can be:
Ropened/closed from outside
Ropened and closed automatically from out-side (vehicles with trunk lid remote closingfeature)
Ropened and closed automatically frominside (vehicles with trunk lid remote closingfeature)
Ropened, closed or stopped during operationwithout the use of your hands (vehicles withKEYLESS-GO and HANDS-FREE ACCESS)
Rlocked separately
Ropened with the emergency release button
Runlocked with the mechanical key
You should preferably place luggage or loadsin the trunk.
Trunk lid reversing feature
The trunk lid is equipped with an automaticreversing feature. It reacts if a solid objectobstructs or restricts the trunk lid during theclosing procedure. The trunk lid opens againautomatically. The automatic reversing func-tion is only an aid and is not a substitute foryour attentiveness to the trunk lid while it isclosing.
GWARNING
The reversing feature does not respond:
Rto soft, light and thin objects, e.g. fingers
Rover the last 1/3 in (8 mm) of the closing
movement
The reversing feature cannot prevent some-
one being trapped in these situations in par-
ticular. There is a risk of injury.
Make sure that no body parts are in close
proximity during the closing procedure.
If somebody becomes trapped:
Rpress theTbutton on the SmartKey,
or
Rpull or press the remote operating switch
on the driver's door or
Rpress the closing or locking button on the
trunk lid, or
Rpull on the trunk lid handle
Opening/closing from outside
Opening
XPress the6button on the SmartKey.
XPull handleC.
XLift the trunk lid.If the trunk partition was closed, it opensautomatically and remains open.
With the roof open, you can use the loadingaid to raise the folded roof in the trunk tomake loading easier (Ypage 251). The trunkpartition opens automatically.
82Trunk
Opening and closing

Closing
XPull the trunk lid down using recessC.
XLock the vehicle if necessary with the7button on the SmartKey or with KEYLESS-GO.
It does not lock if a SmartKey with KEYLESS-GO is detected in the trunk.
Opening/closing automatically from
the outside
Important safety notes
GWARNING
Parts of the body could become trapped
during automatic closing of the trunk lid.
Moreover, people, e.g. children, may be
standing in the closing area or may enter the
closing area during the closing process.
There is a risk of injury.
Make sure that nobody is in the vicinity of
the closing area during the closing process.
Use one of the following options to stop the
closing process:
Rpress theTbutton on the SmartKey.
Rpull or press the remote operating switch
on the driver's door.
Rpress the closing or locking button on the
trunk lid.
Rpull the trunk lid handle
!The trunk lid swings upwards whenopened. Therefore, make sure that there issufficient clearance above the trunk lid.
The opening dimensions of the trunk lid can befound in the "Vehicle data" section(Ypage 326).
Opening automatically
You can automatically open the trunk lid usingthe trunk lid handle.
XIf the trunk lid is unlocked, pull the trunk lidhandle and let it go again immediately.When the roof is open, the trunk partitioncloses automatically.
If the trunk partition was closed, it opensautomatically and remains open.
Vehicles with the trunk lid remote closingfeature:the trunk lid can also be openedautomatically with the SmartKey.
XPress and hold theTbutton on theSmartKey until the trunk lid opens.
Closing automatically
XPress and release closing buttonCon thetrunk lid.
Vehicles with trunk lid remote closing fea-ture and KEYLESS-GO:
XIf the driver's door is closed, you can simul-taneously close the trunk lid and lock thevehicle. The KEYLESS-GO key must be in therear detection range of the vehicle.
XPress locking buttonDin the trunk lid.The trunk partition, the loading aid and thetrunk lid are closed.
If a KEYLESS-GO key is detected outside thevehicle, the trunk lid closes and the vehiclelocks.
If a KEYLESS-GO key s detected in the trunk,the trunk lid opens again after it is closed. Itdoes not lock.
Trunk83
Opening and closing
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
XTo open:pull remote operating switchCfor the trunk lid until the trunk lid opens.If the trunk partition was closed, it opensautomatically and remains open.
XTo close:press remote operating switchCfor the trunk lid until the trunk lid is closed.When the roof is open, the trunk partitioncloses automatically.
You can open and close the trunk lid from thedriver's seat when the vehicle is stationary andunlocked.
Locking the trunk separately
You can lock the trunk separately. If you thenunlock the vehicle centrally, the trunk remainslocked and cannot be opened.
XClose the trunk lid.
XTake the mechanical key out of the Smart-Key (Ypage 76).
XInsert the mechanical key into the trunk lidlock as far as it will go.
XTurn the mechanical key clockwise frompositionGto positionH.
XRemove the mechanical key.
XInsert the mechanical key into the Smart-Key.
Unlocking the trunk (mechanical
key)
!The trunk lid swings upwards whenopened. Therefore, make sure that there issufficient clearance above the trunk lid.
If the trunk cannot be unlocked with theSmartKey or KEYLESS-GO, use the mechanicalkey.
If you use the mechanical key to unlock andopen the trunk lid, the anti-theft alarm systemwill be triggered. Switch off the alarm(Ypage 72).
XTake the mechanical key out of the Smart-Key (Ypage 76).
XInsert the mechanical key into the trunk lidlock as far as it will go.
XTurn the mechanical key from positionGcounter-clockwise as far as it will go to posi-tionH. Simultaneously pull the trunk lidhandle.The trunk is unlocked.
XTurn the mechanical key back to positionGand remove it.
XInsert the mechanical key into the Smart-Key.
Emergency release for the trunk
You can unlock the trunk lid from the insidewith the emergency release button.
86Trunk
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