2019 MERCEDES-BENZ SLC engine

Active Distance Assist DISTRONIC
General notes
Active Distance Assist DISTRONIC regulatesthe speed and automatically helps you main-tain the distance from the vehicle detected infront. Vehicles are detected with the aid of theradar sensor system. Active Distance AssistDISTRONIC brakes automatically to avoidexceeding the set speed or to maintain thedesignated distance from the vehicle in front.
Change into a lower gear in good time on longand steep downhill gradients. This is especiallyimportant if the vehicle is laden. By doing so,you will make use of the braking effect of theengine. This relieves the load on the brake sys-tem and prevents the brakes from overheatingand wearing too quickly.
If Active Distance Assist DISTRONIC detectsthat there is a risk of a collision with the vehi-cle in front, you will be warned visually andaudibly. Active Distance Assist DISTRONICcannot prevent a collision without your inter-vention. An intermittent warning tone will thensound and the distance warning lamp will lightup in the instrument cluster. Brake immedi-ately in order to increase the distance fromthe vehicle in front, or take evasive action, pro-vided it is safe to do so.
For Active Distance Assist DISTRONIC toassist you when driving, the radar sensor sys-tem must be operational.
Active Distance Assist DISTRONIC operates inthe speed range between 0 mph (0 km/h) and120 mph (200 km/h).
Do not use Active Distance Assist DISTRONICon roads with steep gradients.
As Active Distance Assist DISTRONIC trans-mits radar waves, it can resemble the radardetectors of the responsible authorities. Youcan refer to the relevant chapter in the Opera-tor's Manual if questions are asked about this.
iUSA only: This device has been approvedby the FCC as a "Vehicular Radar System".The radar sensor is intended for use in anautomotive radar system only. Removal,tampering, or altering of the device will voidany warranties, and is not permitted by theFCC. Do not tamper with, alter, or use in anynon-approved way.
Any unauthorized modification to this devicecould void the user's authority to operatethe equipment.
iCanada only: This device complies withRSS-210 of Industry Canada. Operation issubject to the following two conditions:
1. This device may not cause interference,and
2. This device must accept any interferencereceived, including interference that maycause undesired operation of the device.
Removal, tampering, or altering of thedevice will void any warranties, and is notpermitted. Do not tamper with, alter, or usein any non-approved way.
Any unauthorized modification to this devicecould void the user's authority to operatethe equipment.
Important safety notes
GWARNING
Active Distance Assist DISTRONIC does not
react to:
Rpeople or animals
Rstationary objects in the road, e.g. stop-
ped or parked vehicles
Roncoming vehicles and crossing traffic
As a result, Active Distance Assist
DISTRONIC may neither give warnings nor
intervene in such situations. There is a risk
of an accident.
Always pay careful attention to the traffic
situation and be ready to brake.
GWARNING
Active Distance Assist DISTRONIC does not
react to:
Rpeople or animals
Rstationary objects in the road, e.g. stop-
ped or parked vehicles (vehicles without
the Driving Assistance package)
Rstationary objects in the road, e.g. stop-
ped or parked vehicles, if sufficient detec-
tion is not possible (vehicles with the Driv-
ing Assistance package)
Roncoming vehicles and crossing traffic
144Driving systems
Driving and pa rking

Rif the battery is disconnected
Rif the vehicle is accelerated, e.g. by a vehi-
cle occupant
There is a risk of an accident.
Always deactivate Active Distance Assist
DISTRONIC and secure the vehicle against
rolling away before you leave it.
Further information on deactivating Active Dis-tance Assist DISTRONIC (Ypage 149).
If Active Distance Assist DISTRONIC detectsthat the vehicle in front is stopping, it brakesyour vehicle until it is stationary.
Once your vehicle is stationary, it remains sta-tionary and you do not need to depress thebrake.
iAfter a time, the electric parking brakesecures the vehicle and relieves the servicebrake.
iDepending on the specified minimum dis-tance, your vehicle will come to a standstillat a sufficient distance behind the vehicle infront. The specified minimum distance is setusing the control on the cruise control lever.
When Active Distance Assist DISTRONIC isactivated, the transmission is shifted automati-cally to position]if:
Rthe driver's seat belt is not fastened and thedriver's door is open
Rthe engine is switched off, unless it is auto-matically switched off by the ECO start/stop function.
The electric parking brake is applied automati-cally if Active Distance Assist DISTRONIC isactive when the vehicle is stationary and:
Ra system malfunction occurs
Rthe power supply is not sufficient
If a malfunction occurs, the transmission mayalso shift to position]automatically.
Setting a speed
Keep in mind that it may take a brief momentuntil the vehicle has accelerated or braked tothe speed set.
XTo adjust the set speed in 1 mph incre-ments (1 km/h increments):briefly pressthe cruise control lever upCto the pres-
sure point for a higher speed, or downDfor a lower speed.Every time the cruise control lever ispressed up or down, the last speed stored isincreased or reduced.
XTo adjust the set speed in 5 mph incre-ments (10 km/h increments):brieflypress the cruise control lever upCpast thepressure point for a higher speed, ordownDfor a lower speed.Every time the cruise control lever ispressed up or down, the last speed stored isincreased or reduced.
Setting a specified minimum distance
You can set the specified minimum distancefor Active Distance Assist DISTRONIC by vary-ing the time span between one and two sec-onds. This determines the distance that ActiveDistance Assist DISTRONIC is to maintain fromthe vehicle in front, depending on the roadspeed. You can see this distance in the multi-function display (Ypage 149).
The specified minimum distance can bechanged while Active Distance AssistDISTRONIC is switched on or off.
Make sure that you maintain a sufficiently safedistance from the vehicle in front. Adjust thedistance to the vehicle in front if necessary.
Cruise control lever
XTo increase:turn control

iThe last speed stored remains stored untilyou switch off the engine.
iActive Distance Assist DISTRONIC is notdeactivated if you depress the acceleratorpedal. If you accelerate to overtake, ActiveDistance Assist DISTRONIC adjusts the vehi-cle's speed to the last speed stored afteryou have finished overtaking.
Active Distance Assist DISTRONIC is automati-cally deactivated if:
Ryou engage the electric parking brake or ifthe vehicle is automatically secured with theelectric parking brake
RESP®intervenes or you deactivate ESP®
Rthe transmission is in position],^or\\
Ryou pull the cruise control lever towards youin order to pull away and the front-passenger door is open
Ryou activate Active Parking Assist
Rthe vehicle is skidding
If Active Distance Assist DISTRONIC is deacti-vated automatically, you will hear a warningtone. TheActive Distance Assist OffActive Distance Assist Offmessage will appear on the multifunction dis-play for approximately five seconds.
Tips for driving with Active Distance
Assist DISTRONIC
General notes
The following contains descriptions of certainroad and traffic conditions in which you mustbe particularly attentive. In such situations,brake if necessary. Active Distance AssistDISTRONIC will then be deactivated.
Cornering, going into and coming out of
a bend
The ability of Active Distance AssistDISTRONIC to detect vehicles when corneringis limited. Your vehicle may brake unexpect-edly or late.
Vehicles traveling on a different line
Active Distance Assist DISTRONIC may notdetect vehicles that are not driving in the mid-dle of their lane. The distance to the vehicle infront will be too short.
Other vehicles changing lanes
Active Distance Assist DISTRONIC has notdetected the vehicle cutting in yet. The dis-tance to this vehicle will be too short.
Narrow vehicles
150Driving systems
Driving and parking

Activation conditions
You can activate the HOLD function if all of thefollowing conditions are fulfilled:
Rthe vehicle is stationary.
Rthe engine is running or if it has been auto-matically switched off by the ECO start/stop function.
Rthe driver's door is closed or your seat beltis fastened.
Rthe electric parking brake is released.
Rthe transmission is in position[,^or\\.
RActive Distance Assist DISTRONIC is deacti-vated
Activating the HOLD function
XMake sure that the activation conditions aremet.
XDepress the brake pedal.
XQuickly depress the brake pedal furtheruntilCappears in the multifunction dis-play.The HOLD function is activated. You canrelease the brake pedal.
iIf depressing the brake pedal the first timedoes not activate the HOLD function, waitbriefly and then try again.
Deactivating the HOLD function
The HOLD function is deactivated automati-cally if:
Ryou accelerate and the transmission is inposition[or^.
Ryou shift the transmission to position].
Ryou apply the brakes again with a certainamount of pressure untilHOLDHOLDdisappearsfrom the multifunction display.
Ryou secure the vehicle using the electricparking brake.
Ryou activate Active Distance AssistDISTRONIC.
iAfter a time, the electric parking brakesecures the vehicle and relieves the servicebrake.
When the HOLD function is activated, thetransmission is automatically shifted to posi-tion]if:
Rthe driver's seat belt is not fastened and thedriver's door is open
Rthe engine is switched off, unless it is auto-matically switched off by the ECO start/stop function.
The electric parking brake secures the vehicleautomatically if the HOLD function is activatedwhen the vehicle is stationary and:
Ra system malfunction occurs
Rthe power supply is not sufficient
If a malfunction in the electric parking brakeoccurs, the transmission may also be shiftedinto position]automatically.
Adaptive damping system
General notes
iMercedes-AMG SLC 43:the adaptivedamping system is called AMG RIDE CON-TROL sports suspension.
A suspension with the adaptive damping sys-tem provides improved driving comfort andcontinuously controls the calibration of thedampers. The damping characteristics adaptto the current operating and driving situation.
The damping is tuned individually to eachwheel and depends on:
Ryour driving style, e.g. sporty
Rthe road surface conditions
Rthe selected drive program (Ypage 124).
152Driving systems
Driving and pa rking

Reversing camera
General notes
Rear view cameraCis an optical parking andmaneuvering aid. It shows the area behindyour vehicle with guide lines in the multimediasystem.
The area behind the vehicle is displayed as amirror image, as in the rear view mirror.
iThe text shown in the multimedia systemdisplay depends on the language setting.The following are examples of rear viewcamera displays in the multimedia system.
Important safety notes
The rear view camera is only an aid. It is not areplacement for your attention to your immedi-ate surroundings. You are always responsiblefor safe maneuvering and parking. Make surethat there are no persons, animals or objectsin the maneuvering area when you are maneu-vering or parking.
Under the following circumstances, the rearview camera will not function, or will functionin a limited manner:
Rif the trunk lid is open
Rin heavy rain, snow or fog
Rat night or in very dark places
Rif the camera is exposed to very bright light
Rif the area is lit by fluorescent bulbs or LEDlighting (the display may flicker)
Rif there is a sudden change in temperature,e.g. when driving into a heated garage inwinter
Rif the camera lens is dirty or obstructed.Observe the notes on cleaning(Ypage 250)
Rif the rear of your vehicle is damaged. In thiscase, have the camera position and settingchecked at a qualified specialist workshop.
The field of vision and other functions of therear view camera may be restricted due toadditional accessories on the rear of the vehi-cle (e.g. license plate holder, bicycle rack).
On vehicles with height-adjustable chassis,leaving the standard height can result in inac-curacies in the guide lines, depending on tech-nical conditions.
iThe contrast of the display may be affec-ted by the sudden presence of sunlight orother light sources, e.g. when exiting agarage. Pay particular attention in this situa-tion.
iIf usability is severely restricted, e.g. dueto pixel errors, have the display repaired orreplaced.
iThe rear view camera is protected fromraindrops and dust by means of a flap. Whenthe rear view camera is activated, this flapopens.
The flap closes again when:
Ryou have finished the maneuvering proc-ess
Ryou switch off the engine
Ryou open the trunk
Observe the notes on cleaning(Ypage 250).
For technical reasons, the flap may remainopen briefly after the rear view camera hasbeen deactivated.
Activating/deactivating the rear view
camera
XTo activate:make sure that the SmartKeyis in positionHin the ignition lock.
XMake sure that theActivation by R gearActivation by R gearfunction is selected in the multimedia sys-tem; see the Digital Operator's Manual.
XEngage reverse gear.The rear view camera flap opens. The multi-media system shows the area behind thevehicle with guide lines.
Driving systems159
Driving and parking
Z

ATTENTION ASSIST assesses your level of fati-gue or lapses in concentration by taking thefollowing criteria into account:
Ryour personal driving style, e.g. steeringcharacteristics
Rjourney details, e.g. time of day and lengthof journey
The functionality of ATTENTION ASSIST isrestricted and warnings may be delayed or notoccur at all:
Rif the road condition is poor, e.g. if the sur-face is uneven or if there are potholes
Rif there is a strong side wind
Rif you have adopted a sporty driving stylewith high cornering speeds or high rates ofacceleration
Rif you are predominantly driving slower than50 mph (80 km/h) or faster than 112 mph(180 km/h)
Rif you are currently using COMAND or mak-ing a telephone call with it
Rif the time has been set incorrectly
Rin active driving situations, such as whenyou change lanes or change your speed
ATTENTION ASSIST is only an aid to the driver.It might not always recognize fatigue orincreasing inattentiveness in time or fail torecognize them at all. The system is not a sub-stitute for a well-rested and attentive driver.
Warning and display messages in the
multifunction display
XActivate ATTENTION ASSIST using the on-board computer (Ypage 175).
If ATTENTION ASSIST is active, you will bewarned no sooner than 20 minutes afteryour journey has begun. You then hear anintermittent warning tone twice and theATTENTION ASSIST: Take a Break!ATTENTION ASSIST: Take a Break!mes-sage appears in the multifunction display.
XIf necessary, take a break.
XPress thevor8button to confirmthe message.
On long journeys, take regular breaks in goodtime to allow yourself to rest properly. If youdo not take a break and ATTENTION ASSISTstill detects increasing lapses in concentra-tion, you will be warned again after 15 minutesat the earliest.
ATTENTION ASSIST is reset when you continueyour journey and starts assessing your tired-ness again if:
Ryou switch off the engine
Ryou take off your seat belt and open thedriver's door, e.g. for a change of drivers orto take a break
When ATTENTION ASSIST is deactivated, the

Important safety notes
GWARNING
If you operate information systems and com-
munication equipment integrated in the
vehicle when driving, you may be distracted
from the traffic situation. You could also
lose control of the vehicle. There is a risk of
an accident.
Only operate this equipment when the traffic
situation permits. If you are not sure that
this is possible, park the vehicle paying
attention to traffic conditions and operate
the equipment when the vehicle is station-
ary.
You must observe the legal requirements forthe country in which you are currently drivingwhen operating the on-board computer.
GWARNING
If the instrument cluster has failed or mal-
functioned, you may not recognize function
restrictions in systems relevant to safety.
The operating safety of your vehicle may be
impaired. There is a risk of an accident.
Drive on carefully. Have the vehicle checked
at a qualified specialist workshop immedi-
ately.
The on-board computer only shows messagesor warnings from certain systems in the multi-function display. You should therefore makesure your vehicle is operating safely at alltimes.
If the operating safety of your vehicle isimpaired, pull over as soon as it is safe to doso. Contact a qualified specialist workshop.
For an overview, see the instrument panelillustration (Ypage 32).
Displays and operation
Instrument cluster lighting
The lighting in the instrument cluster, in thedisplays and the controls in the vehicle interiorcan be adjusted using the brightness controlknob.
The brightness control knob is located on thebottom left of the instrument cluster(Ypage 32).
XTurn the brightness control knob clockwiseor counter-clockwise.If you turn the light switch (Ypage 97) totheX,`orXposition, the bright-ness will depend upon the brightness of theambient light.
The light sensor in the instrument clusterautomatically controls the brightness of themultifunction display. In daylight, the dis-plays in the instrument cluster are not illu-minated.
Speedometer with segments
The segments in the speedometer indicatewhich speed range is available.
RCruise control activated (Ypage 142):
The segments light up from the storedspeed to the maximum speed.
RActive Distance Assist DISTRONIC activated(Ypage 144):
One or two segments in the set speed rangelight up.
RActive Distance Assist DISTRONIC detects avehicle in front moving more slowly than thestored speed:
The segments between the speed of thevehicle in front and the stored speed lightup.
Tachometer
!Do not drive in the overrevving range, asthis could damage the engine.
The red band in the tachometer indicates theengine's overrevving range.
The fuel supply is interrupted to protect theengine when the red band is reached.
Outside temperature display
You should pay special attention to road con-ditions when temperatures are around freezingpoint.
Displays and operation167
On-board computer and displays
Z

Bear in mind that the outside temperature dis-play indicates the temperature measured anddoes not record the road temperature.
The outside temperature display is in the mul-tifunction display (Ypage 169).
A change in the outside temperature is shownin the multifunction display after a delay.
Coolant temperature gage
GWARNING
Opening the hood when the engine is over-
heated or when there is a fire in the engine
compartment could expose you to hot gases
or other service products. There is a risk of
injury.
Let an overheated engine cool down before
opening the hood. If there is a fire in the
engine compartment, keep the hood closed
and contact the fire department.
!A display message is shown if the coolanttemperature is too high.
If the coolant temperature is over 248 ‡(120 †), do not continue driving. Theengine will otherwise be damaged.
The coolant temperature gage is in the instru-ment cluster on the right-hand side(Ypage 32).
TheHmarking in the coolant temperaturegauge corresponds to a coolant temperatureof approximately 248 ‡ (120 †).
Under normal operating conditions and at thecorrect coolant level, the coolant temperaturegauge may rise to theHmarking.
Operating the on-board computer
Overview
CMultifunction display
DRight control panel