steering MERCEDES-BENZ SL CLASS 2019 Owner's Manual

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

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

Switching the seat ventilation on/off
Switching on/off
The three blue indicator lamps in the buttonsindicate the blower setting you have selected.
XEnsure that the SmartKey is in positionHin the ignition lock.
XTo switch on:press buttonCrepeatedlyuntil the desired blower setting is set.
XTo switch off:press buttonCrepeatedlyuntil all the indicator lamps go out.
iIf the battery voltage is too low, the seatventilation may switch off.
iIf you open the roof using the SmartKey(Ypage 92), the driver's seat ventilation isautomatically switched on and the side win-dows open.
Problems with the seat ventilation
The seat ventilation has switched off prema-turely or cannot be switched on. The vehicle'selectrical system voltage is too low becausetoo many electrical consumers are switchedon.
XSwitch off electrical consumers that you donot need, such as the rear window defrosteror interior lighting.
XOnce the battery is sufficiently charged,switch on the seat heating again.
AIRSCARF
Setting head level heating (AIRSCARF)
GWARNING
When AIRSCARF is switched on, very hot air
can flow from the vents in the head
restraints. This could result in burns in the
immediate vicinity of the air vents. There is a
risk of injury.
Reduce the heater output before it becomes
too hot.
The AIRSCARF function warms the head andneck area of vehicle occupants with warm air.The warm air flows out of the holes in the headrestraints.
The three red indicator lamps in the buttonindicate the heating level you have selected.
XEnsure that the SmartKey is in positionHin the ignition lock.
XTo switch on:press buttonC.Three red indicator lamps in the button lightup. The blower starts up after a preheatingphase of seven seconds.
XPress buttonCrepeatedly until the desiredheating level is set.
XTo switch off:press buttonCrepeatedlyuntil all the indicator lamps go out.
iThe blower continues running for sevenseconds to cool down the heating elements.
iIf the battery voltage is too low, AIRSCARFmay switch off.
102Seats
Seats, steering wheel and mirrors

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

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.
GWARNING
When the EASY-ENTRY/EXIT feature adjusts
the steering wheel and the driver's seat, 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 seat and
the steering wheel.
If somebody becomes trapped:
Rpress one of the memory function posi-
tion buttons, or
Rpress one of the memory function mem-
ory buttons, or
Rmove the switch for steering wheel
adjustment in the opposite direction to
that in which the steering wheel is moving
The adjustment process is stopped.
GWARNING
If you use openings in the bodywork or
detachable parts as steps, you could:
Rslip and/or fall
Rdamage the vehicle and cause yourself to
fall.
There is a risk of injury.
Always use secure climbing aids, e.g. a suit-
able ladder.
The EASY-ENTRY/EXIT feature makes gettingin and out of your vehicle easier.
You can activate and deactivate the EASY-ENTRY/EXIT feature in the on-board computer(Ypage 201).
Position of the steering wheel when
the EASY-ENTRY/EXIT feature is active
The steering wheel swings up when you:
Rremove the SmartKey from the ignition lock
Ropen the driver's door with KEYLESS-GO inposition1
Ropen the driver's door and the SmartKey isin position

Mirrors
Exterior mirrors
Adjusting the exterior mirrors
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
The exterior mirror on the front-passenger
side reduces the size of the image. Visible
objects are actually closer than they appear.
This means that you could misjudge the dis-
tance from road users traveling behind, e.g.
when changing lane. There is a risk of an
accident.
For this reason, always make sure of the
actual distance from the road users traveling
behind by glancing over your shoulder.
XMake sure that the SmartKey is in positionGorHin the ignition lock.
XPress buttonCfor the left exterior mirroror buttonDfor the right exterior mirror.The indicator lamp in the corresponding but-ton lights up in red.
The indicator lamp goes out again aftersome time. You can adjust the selected
exterior mirror using button

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 memory function can be activated at anytime, e.g. even when the SmartKey is not inthe ignition lock.
With the memory function, you can store up tothree different settings, e.g. for three differentpeople.
The following settings are stored as a singlememory preset:
RPosition of the seat, backrest and headrestraint
RDriver's side: steering wheel position
RDriver's side: position of the exterior mirrorson the driver's and front-passenger sides
XAdjust the seat electrically (Ypage 99).
XOn the driver's side, adjust the steeringwheel (Ypage 103) and the exterior mirrors(Ypage 105).
XPress memory buttonMand one of the stor-age position buttons1,2or3within threeseconds.The settings are stored in the selected pre-set position. A tone sounds when the set-tings have been completed.
Calling up a stored setting
XPress and hold the relevant storage positionbutton1,2or3until the seat, steeringwheel and exterior mirrors are in the storedposition.
iThe setting procedure is interrupted assoon as you release the storage positionbutton.
108Memory function
Seats, steering wheel and mirrors

The blueWindicator lamp in the instru-ment cluster lights up when the high-beamheadlamps are switched on.
XTo switch off the high-beam headlamps:move the combination switch back to itsnormal position.The blueWindicator lamp in the instru-ment cluster goes out.
Hazard warning lamps
XTo switch on the hazard warning lamps:press buttonC.All turn signals flash. If you now switch on aturn signal using the combination switch,only the turn signal lamp on the correspond-ing side of the vehicle will flash.
XTo switch off the hazard warning lamps:press buttonC.
The hazard warning lamps automaticallyswitch on if:
Ran air bag is deployed or
Rthe vehicle decelerates rapidly from a speedof above 45 mph (70 km/h) and comes to astandstill
The hazard warning lamps switch off automati-cally if the vehicle reaches a speed of above6 mph (10 km/h) again after a full brake appli-cation.
iThe hazard warning lamps still operate ifthe ignition is switched off.
Cornering light function
The cornering light function improves the illu-mination of the road over a wide angle in thedirection you are turning, enabling better visi-bility in tight bends, for example. The corner-
ing light function can only be activated whenthe low-beam headlamps are switched on.
Active:
Rif you are driving at speeds below 25 mph(40 km/h) and switch on the turn signal orturn the steering wheel
Rif you are driving at speeds between 25 mph(40 km/h) and 45 mph (70 km/h) and turnthe steering wheel
The cornering lamp may remain lit for a shorttime, but is automatically switched off after nomore than three minutes.
Cornering light function with traffic circlefunction:
The cornering light function is activated onboth sides before entering a traffic circlethrough an evaluation of the current GPS posi-tion of the vehicle. It remains active until afterthe vehicle has left the traffic circle. In thisway, pedestrians crossing the road, for exam-ple, are illuminated by your vehicle in goodtime.
Active light function
The active light function is a system thatmoves the headlamps according to the steer-ing movements of the front wheels. In thisway, relevant areas remain illuminated whiledriving. This allows you to recognize pedes-trians, cyclists and animals sooner.
Active:when the lights are switched on.
Vehicles with Lane Keeping Assist: the activelight function evaluates the course of the lanein which you are driving and pre-emptivelycontrols the active light function.
Adaptive Highbeam Assist
General notes
You can use this function to set the headlampsto change between low beam and high beamautomatically. The system recognizes vehicleswith their lights on, either approaching fromthe opposite direction or traveling in front ofyour vehicle, and consequently switches theheadlamps from high beam to low beam.
The system automatically adapts the low-beamheadlamp range depending on the distance tothe other vehicle. Once the system no longer
Exterior lighting111
Lights and windshield wipers
Z

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

ProblemPossible causes/consequences andPPSolutions
The engine is not run-ning smoothly and ismisfiring.
There is a malfunction in the engine electronics or in a mechanicalcomponent of the engine management system.
XOnly depress the accelerator pedal slightly.Otherwise, non-combusted fuel may get into the catalytic con-verter and damage it.
XHave the cause rectified immediately at a qualified specialistworkshop.
The coolant tempera-ture display shows avalue above 248 ‡(120 †). The coolantwarning lamp may alsobe on and a warningtone may sound.
The coolant level is too low. The coolant is too hot and the engine isno longer being cooled sufficiently.
XStop as soon as possible and allow the engine and the coolant tocool down.
XCheck the coolant level (Ypage 267). Observe the warning notesas you do so and add coolant if necessary.
If the coolant level is correct, the engine radiator fan may be faulty.The coolant is too hot and the engine is no longer being cooled suf-ficiently.
XAt coolant temperatures below 248 ‡ (120 †), drive to the near-est qualified specialist workshop.
XAvoid heavy loads on the engine as you do so, e.g. driving inmountainous terrain and stop-and-go traffic.
Notes on towing vehicles
The vehicle is not suitable for attaching towbar systems, such as those used for flat tow-ing or dinghy towing.
Attaching or using tow bar systems may resultin damage to the vehicle.
When towing a vehicle with tow bar systems,safe driving characteristics cannot be guaran-teed for the towing vehicle or the towed vehi-cle.
The vehicle/vehicle combination may swerve.
Observe the permissible towing methods(Ypage 289) and the notes on towing withboth axles on the ground (Ypage 289).
DYNAMIC SELECT button (all vehi-
cles except Mercedes-AMG vehicles)
Use the DYNAMIC SELECT button to changethe drive program. Depending on the drive pro-gram selected the following vehicle character-istics will change:
Rthe drive (engine and transmission manage-ment)
Rthe suspension
Rthe steering
Rthe curve tilting function (vehicles withActive Body Control)
Rthe control thresholds of ESP®
Each time you start the engine with the Smart-Key or the Start/Stop button, drive programCis activated. Further information about startingthe engine (Ypage 127).
Each time you start the engine with the Smart-Key, drive programCis activated. Furtherinformation about starting the engine(Ypage 127).
132DYNAMIC SELECT button (all vehicles except Mercedes-AMG vehicles)
Driving and parking