2019 MERCEDES-BENZ SL CLASS child lock

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

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

Operation
XTo open/close:kick your foot into sensordetection zoneCbelow the bumper.A warning tone will sound while the trunk lidis opening or closing.
XIf the trunk lid does not open after sev-eral attempts:wait at least ten secondsthen move your leg under the bumper onceagain.
If you hold your foot under the bumper for toolong, the trunk lid does not open or close.Repeat the leg movement more quickly if thisoccurs.
To stop the opening or closing procedure, youhave the following options:
Rkick with your foot into sensor detectionrangeCunder the bumper
RPull the handle on the outside of the trunklid.
RPress the closing button on the trunk lid.
RPull or press the remote operating switch onthe driver's door.
RPress theTbutton on the SmartKey.
If the trunk lid closing procedure has beenstopped:
RMove your foot under the bumper again andthe trunk lid will open.
If the trunk lid opening procedure has beenstopped:
RMove your foot under the bumper again andthe trunk lid will close.
Opening/closing automatically from
inside
Important safety notes
GWARNING
Parts of the body could become trapped
during automatic closing of the trunk lid. In
addition, people may be standing in the clos-
ing area or may enter the closing area, e.g.
children, during the closing procedure.
There is a risk of injury.
Make sure that nobody is in the vicinity of
the closing area during the closing process.
Release the remote operating switch imme-
diately if somebody becomes trapped. To re-
open the trunk lid, pull on the remote oper-
ating switch.
GWARNING
The trunk lid can be automatically opened or
closed even if the SmartKey is not in the
vehicle. If children are left unsupervised in
the vehicle, they could activate the func-
tions. There is a risk of injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle.
Never leave children unsupervised in the
vehicle.
!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).
Trunk85
Opening and closing
Z

XPress emergency release buttonCbriefly.The trunk lid unlocks and opens.
The trunk lid can be unlocked and opened withthe trunk lid emergency release when the vehi-cle is stationary or while driving.
The trunk lid emergency release does notunlock the trunk lid if the battery is disconnec-ted or discharged.
Trunk lid emergency release light:
REmergency release buttonCflashes for30 minutes after the trunk lid is opened
REmergency release buttonCflashes for60 minutes after the trunk lid is closed
Side windows
Important safety notes
GWARNING
While opening the side windows, body parts
could become trapped between the side
window and the door frame as the side win-
dow moves. There is a risk of injury.
Make sure that nobody touches the side
window during the opening procedure. If
somebody becomes trapped, release the
switch or pull the switch to close the side
window again.
GWARNING
While closing the side windows, body parts
in the closing area could become trapped.
There is a risk of injury.
When closing make sure that no parts of the
body are in the closing area. If somebody
becomes trapped, release the switch or
press the switch to open the side window
again.
GWARNING
If children operate the side windows they
could become trapped, particularly if they
are left unsupervised. There is a risk of
injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle.
Never leave children unsupervised in the
vehicle.
Side window reversing feature
The front side windows are equipped with anautomatic reversing feature. If a solid objectblocks or restricts the upward movement ofone of the front side windows during the clos-ing process, the side window opens againautomatically. During the manual closing proc-ess, the side window only opens again auto-matically after the corresponding switch isreleased. However, the automatic reversingfeature is only an aid and does not relieve youof the responsibility of paying attention whenclosing a side window.
GWARNING
The reversing feature does not respond:
Rto soft, light and thin objects, e.g. fingers
Rover the last 1/6 in (4 mm) of the closing
movement
Rwhile adjusting
Rwhen closing the side window again man-
ually immediately after automatic revers-
ing
This means that the reversing feature can-
not prevent someone being trapped in these
situations. There is a risk of injury.
Make sure that no body parts are in close
proximity during the closing procedure. If
someone becomes trapped, press the
switch to open the side window again.
Side windows87
Opening and closing
Z

The seats can still be adjusted when there isno SmartKey in the ignition lock.
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.
GWARNING
If the driver's seat is not engaged, it could
move forwards as far as the next catch dur-
ing movement such as braking or abrupt
changes of direction. As a result, you would
be pushed against your seat belt by the
unsecured driver's seat.
This could cause you to lose control of the
vehicle. The seat belt cannot protect as
intended and could result in additional
injury.
There is a risk of an accident and injury.
Before every journey, make sure that the
driver's seat is fully engaged.
Observe the safety notes on "Air bags"(Ypage 45) and "Children in the vehicle"(Ypage 57).
GWARNING
If you adjust the seat height carelessly, you
or other vehicle occupants could be trapped
and thereby injured. Children in particular
could accidentally press the electrical seat
adjustment buttons and become trapped.
There is a risk of injury.
While moving the seats, make sure that your
hands or other body parts do not get under
the lever assembly of the seat adjustment
system.
GWARNING
If the head restraints are not installed or not
adjusted correctly, they cannot provide pro-
tection as intended. There is an increased
risk of injury in the head and neck area, e.g.
in the event of an accident or when braking.
Always drive with the head restraints instal-
led. Before driving off, make sure for every
vehicle occupant that the center of the head
restraint supports the back of the head at
about eye level.
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.
!To prevent damage to the seats and theseat heating, observe the following notes:
RDo not spill liquids onto the seats. Dry theseats as soon as possible if liquid doesget spilled on the seats.
RIf the seat covers are damp or wet, do notswitch on the seat heating. Also, do notuse the seat heating to dry the seats.
RClean the seat covers as recommended;see the "Interior care" section.
RDo not transport heavy loads on theseats. Do not place pointed objects onthe seat cushions such as knives, nails ortools. Where possible, use the seats onlyfor carrying passengers.
RWhen operating the seat heating, do notcover the seats with insulating materials,e.g. blankets, coats, bags, protective cov-ers, child seats or booster seats.
RWhen the seat heating is switched on, theseat surface can be damaged as a resultof objects being placed on the seats, forexample, seat cushions, child seats andprotective covers not approved byMercedes-Benz.
!Make sure that there are no objects in thefootwell under or behind the seats whenmoving the seats back. There is a risk thatthe seats and/or the objects could be dam-aged.
iThe head restraints cannot be removed.
98Seats
Seats, steering wheel and mirrors

Switching the seat heating on/off
Switching on/off
GWARNING
Repeatedly switching on the seat heating
can cause the seat cushion and backrest
pads to become very hot. The health of per-
sons with limited temperature sensitivity or
a limited ability to react to high tempera-
tures may be affected or they may even suf-
fer burn-like injuries. There is a risk of injury.
Therefore, do not switch the seat heating on
repeatedly.
!When the seat heating is switched on, theseat surface can be damaged as a result ofobjects being placed on the seats, for exam-ple, seat cushions, child seats and protec-tive covers not approved by Mercedes-Benz.
Ensure that there are no objects on the seatsurface when the seat heating is switchedon.
Driver's and front-passenger seat
The three red indicator lamps in the buttonindicate the heating level you have selected.
The system automatically switches down fromlevel3to level2after approximately eightminutes.
The system automatically switches down fromlevel2to level1after approximately tenminutes.
The system automatically switches off approx-imately 20 minutes after it is set to level1.
XMake sure that the SmartKey is in positionGorHin the ignition lock.
XTo switch on:press buttonCrepeatedlyuntil the desired heating level is set.
XTo switch off:press buttonCrepeatedlyuntil all the indicator lamps go out.
iIf the battery voltage is too low, the seatheating may switch off.
Problems with the seat heating
ProblemPossible causes/consequences andPPSolutions
The seat heating hasswitched off prema-turely or cannot beswitched on. The vehi-cle's electrical systemvoltage is too lowbecause too many elec-trical consumers areswitched on.
Switch off electrical consumers that you do not need, such as therear window defroster or interior lighting.
Once the battery is sufficiently charged, switch on the seat heatingagain.
Seats101
Seats, steering wheel and mirrors
Z

Steering wheel
Important safety notes
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.
GWARNING
Children could injure themselves if they
adjust the steering wheel. There is a risk of
injury.
Never leave children unsupervised 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.
The electrically adjustable steering wheel canstill be adjusted when there is no SmartKey inthe ignition lock.
Adjusting the steering wheel electri-
cally
CAdjusts the steering wheel height
DAdjusts the steering wheel position (fore-and-aft adjustment)
iFurther related subjects:
REASY-ENTRY/EXIT feature (Ypage 103)
RStoring settings (Ypage 107)
EASY-ENTRY/EXIT feature
Important safety notes
GWARNING
If you drive off while the EASY-ENTRY/EXIT
feature is making adjustments, you could
lose control of the vehicle. There is a risk of
an accident.
Always wait until the adjustment process is
complete before driving off.
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.
Steering wheel103
Seats, steering wheel and mirrors
Z