2019 MERCEDES-BENZ SLC engine

cause death or serious bodily injury if thevehicle is driven, that defect or malfunc-tion has been subject to repair two ormore times, and you have directly notifiedMercedes-Benz USA, LLC in writing of theneed for its repair.
(2) the same substantial defect or malfunc-tion of a less serious nature than category(1) has been subject to repair four or moretimes and you have directly notifiedMercedes-Benz in writing of the need forits repair.
(3) the vehicle is out of service by reason ofrepair of the same or different substantialdefects or malfunctions for a cumulativetotal of more than 30 calendar days.
Please send your written notice to:
Mercedes-Benz USA, LLC
Customer Assistance Center
One Mercedes-Benz Drive
Sandy Springs, GA 30328
Maintenance
The Service and Warranty Booklet describes allthe necessary maintenance work which shouldbe done at regular intervals.
Always have the Service and Warranty Bookletwith you when you bring the vehicle to anauthorized Mercedes-Benz Center. The serviceadvisor will record every service for you in theService and Warranty Booklet.
Roadside Assistance
The Mercedes-Benz Roadside Assistance Pro-gram offers technical help in the event of abreakdown. Calls to the toll-free RoadsideAssistance Hotline are answered by our agents24 hours a day, 365 days a year.
1-800-FOR-MERCedes(1-800-367-6372)(USA)
1-800-387-0100 (Canada)
For additional information, refer to theMercedes-Benz Roadside Assistance Programbrochure (USA) or the "Roadside Assistance"section in the Service and Warranty booklet(Canada). You will find both in your vehicle lit-erature portfolio.
Change of address or change of own-
ership
In the event of a change of address, pleasesend us the "Notification of Address Change"in the Service and Guarantee booklet or simplycall the Mercedes-Benz Customer AssistanceCenter (USA) at the hotline number1-800-FOR-MERCedes(1-800-367-6372) orCustomer Service Center (Canada) at1-800-387-0100. This will assist us in contact-ing you in a timely manner should the needarise.
If you sell your Mercedes, please leave theentire literature in the vehicle so that it isavailable to the next owner.
If you have purchased a used car, please sendus the "Notification of Used Car Purchase" inthe Service and Guarantee booklet or simplycall the Mercedes-Benz Customer AssistanceCenter (USA) at the hotline number1-800-FOR-MERCedes(1-800-367-6372) orCustomer Service (Canada) at1-800-387-0100.
Vehicle operation outside the USA
and Canada
When you are abroad with your vehicle,observe the following points:
RService facilities or replacement parts maynot be readily available.
RLead-free fuel for vehicles with a catalyticconverter may not be available. Leaded fuelcan cause damage to the catalytic con-verter.
RThe fuel may have a considerably loweroctane number. Unsuitable fuel can causeengine damage.
Some Mercedes-Benz models are available fordelivery in Europe through our European Deliv-ery Program. For details, consult an authorizedMercedes-Benz Center or write to one of thefollowing addresses.
In the USA
Mercedes-Benz USA, LLC
European Delivery Department
One Mercedes-Benz Drive
Sandy Springs, GA 30328
In Canada
Mercedes-Benz Canada, Inc.
Service and vehicle operation25
Introduction
Z

ing interference that may cause undesiredoperation of the device."
Diagnostics connection
The diagnostics connection is used for con-necting diagnostic equipment at a qualifiedspecialist workshop.
GWARNING
If you connect equipment to a diagnostics
connection in the vehicle, it may affect the
operation of vehicle systems. As a result,
the operating safety of the vehicle could be
affected. There is a risk of an accident.
Only connect equipment to a diagnostics
connection in the vehicle, which is approved
for your vehicle by Mercedes-Benz.
GWARNING
Objects in the driver's footwell may restrict
the clearance around the pedals or block a
depressed pedal. This jeopardizes the oper-
ating and road safety of the vehicle. There is
a risk of an accident.
Stow all objects securely in the vehicle so
that they do not get into the driver's foot-
well. When using floormats or carpets, make
sure that they are properly secured so that
they do not slip or obstruct the pedals. Do
not place several floormats or carpets on
top of one another.
!If the engine is switched off and equip-ment on the diagnostics connection is used,the starter battery may discharge.
Connecting equipment to the diagnostics con-nection can lead to emissions monitoringinformation being reset, for example. This maylead to the vehicle failing to meet the require-ments of the next emissions test during themain inspection.
Qualified specialist workshop
An authorized Mercedes-Benz Center is aqualified specialist workshop. It has the neces-sary specialist knowledge, tools and qualifica-tions to correctly carry out the work required
on your vehicle. This is especially the case forwork relevant to safety.
Observe the notes in the Maintenance Book-let.
Always have the following work carried out atan authorized Mercedes-Benz Center:
Rwork relevant to safety
Rservice and maintenance work
Rrepair work
Ralterations, installation work and modifica-tions
Rwork on electronic components
Correct use
If you remove any warning stickers, you or oth-ers could fail to recognize certain dangers.Leave warning stickers in position.
Observe the following information when driv-ing your vehicle:
Rthe safety notes in this manual
Rtechnical data for the vehicle
Rtraffic rules and regulations
Rlaws and safety standards pertaining tomotor vehicles
Information about the REACH regula-
tion
The REACH regulation (Regulation (EC) no.1907/2006, Article 33) lays down an informa-tion obligation for substances of very high con-cern (SVHC).
Daimler AG acts in good faith to avoid usingthese SVHCs and to allow the customer tohandle these substances safely. In accordancewith supplier information and internal productinformation from Daimler AG, SVHCs thataccount for more than 0.1 percent by weightof individual products in this vehicle areknown.
More detailed information can be found at thefollowing addresses:
Rhttp://www.daimler.com/reach(Germanversion)
Rhttp://www.daimler.com/reach/en(English version)
Operating safety27
Introduction
Z

Restraint system warning lamp
The functions of the restraint system arechecked after the ignition is switched on andat regular intervals while the engine is running.Therefore, malfunctions can be detected ingood time.
Theurestraint system warning lamp onthe instrument cluster lights up when the igni-tion is switched on. It goes out no later than afew seconds after the vehicle is started. Thecomponents of the restraint system are inoperational readiness.
A malfunction has occurred if theurestraint system warning lamp:
Rdoes not light up after the ignition isswitched on
Rdoes not go out after a few seconds with theengine running
Rlights up again while the engine is running
GWARNING
If the restraint system is malfunctioning,
restraint system components may be trig-
gered unintentionally or may not deploy as
intended during an accident. This can affect
for example the Emergency Tensioning
Device or the air bag. This poses an
increased risk of injury or even fatal injury.
Have the restraint system checked and
repaired in a qualified specialist workshop
as soon as possible.
PASSENGER AIR BAG indicator lamp
PASSENGER AIR BAG ON indicator lampCand PASSENGER AIR BAG OFF indicatorlampDare part of the Occupant Classifica-tion System (OCS).
The indicator lamps display the status of thefront-passenger front air bag.
RPASSENGER AIR BAG ON lights up for 60seconds, subsequently both indicator lampsare off (PASSENGER AIR BAG ON and OFF):the front-passenger front air bag is able todeploy in the event of an accident.
RPASSENGER AIR BAG OFF lights up: thefront-passenger front air bag is deactivated.It will then not be deployed in the event ofan accident.
If the PASSENGER AIR BAG ON indicator lampis off, only the PASSENGER AIR BAG OFF indi-cator lamp shows the status of the front-passenger front air bag. The PASSENGER AIRBAG OFF indicator lamp may be lit continu-ously or be off.
Depending on the person in the front-passenger seat, the front-passenger front airbag must either be deactivated or enabled;see the following points. You must make sureof this both before and during a journey.
RChildren in a child restraint system:whether the front-passenger front air bag isenabled or deactivated depends on theinstalled child restraint system, and the ageand size of the child. Therefore, be sure toobserve the notes on the "Occupant Classifi-cation System (OCS)" (Ypage 46) and on"Children in the vehicle" (Ypage 53).There you will also find instructions on rear-ward and forward-facing child restraint sys-tems on the front-passenger seat.
RAll other persons:depending on the classi-fication of the person in the front-passengerseat, the front-passenger front air bag isenabled or deactivated (Ypage 46). Besure to observe the notes on "Seatbelts“ (Ypage 39) and "Air bags"(Ypage 43). There you can also find infor-mation on the correct seat position.
Seat belts
Introduction
Seat belts are the most effective means ofrestricting the movement of vehicle occupantsin the event of an accident or the vehicle roll-ing over. This reduces the risk of vehicle occu-pants coming into contact with parts of thevehicle interior or being ejected from the vehi-cle. Furthermore, the seat belt helps to keep
Occupant safety39
Safety
Z

GWARNING
If you leave children unsupervised in the
vehicle, they could set it in motion by, for
example:
Rrelease the parking brake.
Rshift the automatic transmission out of
the parking positionP.
Rstart the engine.
In addition, they may operate vehicle equip-
ment and become trapped. There is a risk of
an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle.
Never leave children unsupervised in the
vehicle.
GWARNING
If persons, particularly children are subjec-
ted to prolonged exposure to extreme heat
or cold, there is a risk of injury, possibly
even fatal. Never leave children unattended
in the vehicle.
GWARNING
If the child restraint system is subjected to
direct sunlight, parts may get very hot. Chil-
dren may burn themselves on these parts,
particularly on the metal parts of the child
restraint system. There is a risk of injury.
If you leave the vehicle, taking the child with
you, always ensure that the child restraint
system is not exposed to direct sunlight.
Protect it with a blanket, for example. If the
child restraint system has been exposed to
direct sunlight, let it cool down before secur-
ing the child in it. Never leave children unat-
tended in the vehicle.
Always ensure that all vehicle occupants havetheir seat belts fastened correctly and are sit-ting properly. Particular attention must be paidto children.
Observe the safety notes on the seat belt(Ypage 40) and the notes on correct use ofseat belts (Ypage 41).
A booster seat may be necessary to achieveproper seat belt positioning for children over
40 lbs (18 kg) until they reach a height wherea three-point seat belt can be properly fas-tened without a booster seat.
Special seatbelt retractor
GWARNING
If the seat belt is released while driving, the
child restraint system will no longer be
secured properly. The special seat belt
retractor is disabled and the inertia real
draws in a portion of the seat belt. The seat
belt cannot be immediately refastened.
There is an increased risk of injury, possibly
even fatal.
Stop the vehicle immediately, paying atten-
tion to road and traffic conditions. Reacti-
vate the special seat belt retractor and
secure the child restraint system properly.
The seat belt on the front-passenger's side isequipped with a special seat belt retractor.When activated, the special seat belt retractorensures that the seat belt cannot slacken oncethe child seat is secured.
Installing a child restraint system:
XMake sure you observe the child restraintsystem manufacturer's installation instruc-tions.
XPull the seat belt smoothly out of the beltloop.
XEngage seat belt tongue in belt buckle.
Activating the special seat belt retractor:
XPull the seat belt out fully and let the inertiareel retract it again.While the seat belt is retracting, you shouldhear a ratcheting sound. The special seatbelt retractor is enabled.
XPush the child restraint system down so thatthe seat belt is tight and does not loosen.
54Children in the vehicle
Safety

REBD (ElectronicBrake forceDistribution)(Ypage 63)
RADAPTIVE BRAKE (Ypage 64)
Important safety notes
If you fail to adapt your driving style or if youare inattentive, the driving safety systems canneither reduce the risk of an accident noroverride the laws of physics. Driving safetysystems are merely aids designed to assistdriving.
You are responsible for maintaining the dis-tance to the vehicle in front, for vehicle speed,for braking in good time, and for staying inlane. Always adapt your driving style to suitthe prevailing road and weather conditions andmaintain a safe distance from the vehicle infront. Drive carefully.
The driving safety systems described onlywork as effectively as possible when there isadequate contact between the tires and theroad surface. Pay particular attention to theinformation regarding tires, recommendedminimum tire tread depths etc. in the "Wheelsand tires" section (Ypage 267).
In wintry driving conditions, always use wintertires (M+S tires) and if necessary, snowchains. Only in this way will the driving safetysystems described in this section work aseffectively as possible.
ABS (Anti-lock Braking System)
General information
ABS regulates brake pressure in such a waythat the wheels do not lock when you brake.This allows you to continue steering the vehi-cle when braking.
The%ABS warning lamp in the instrumentcluster lights up when the ignition is switchedon. It goes out when the engine is running.
ABS works from a speed of about 5 mph(8 km/h), regardless of road-surface condi-tions. ABS works on slippery surfaces, evenwhen you only brake gently.
Important safety notes
iObserve the "Important safety notes" sec-tion (Ypage 57).
GWARNING
If ABS is malfunctioning, the wheels could
lock when braking. The steerability and
braking characteristics would be severely
affected. There is an increased danger of
skidding and accidents.
Drive on carefully. Have ABS checked imme-
diately at a qualified specialist workshop.
When ABS is malfunctioning, other systems,including driving safety systems, will alsobecome inoperative. Observe the informationon the ABS warning lamp (Ypage 210) anddisplay messages which may be shown in theinstrument cluster (Ypage 183).
Brakes
XIf ABS intervenes:continue to depress thebrake pedal vigorously until the braking sit-uation is over.
XTo make a full brake application:depressthe brake pedal with full force.
If ABS intervenes when braking, you will feel apulsing in the brake pedal.
The pulsating brake pedal can be an indicationof hazardous road conditions, and functions asa reminder to take extra care while driving.
BAS (Brake Assist System)
General information
BAS operates in emergency braking situations.If you depress the brake pedal quickly, BASautomatically boosts the braking force, thusshortening the stopping distance.
Important safety notes
iObserve the "Important safety notes" sec-tion (Ypage 57).
Driving safety systems57
Safety
Z

4 mph (7 km/h). It uses radar sensor technol-ogy to assess the traffic situation.
Up to a speed of approximately 155 mph(250 km/h), Adaptive Brake Assist is capableof reacting to moving objects that havealready been detected as such at least onceover the period of observation.
Up to a speed of approximately 44 mph(70 km/h), Adaptive Brake Assist reacts tostationary obstacles.
If Adaptive Brake Assist demands particularlyhigh braking force, preventative passenger
protection measures (PRE-SAFE®) are activa-ted simultaneously (Ypage 53).
XKeep the brake pedal depressed until theemergency braking situation is over.ABS prevents the wheels from locking.
The brakes will work normally again if:
Ryou release the brake pedal
Rthere is no longer any danger of a collision
Rno obstacle is detected in front of your vehi-cle
Adaptive Brake Assist is then deactivated.
Important safety notes
GWARNING
Adaptive Brake Assist cannot always clearly
identify objects and complex traffic situa-
tions.
In such cases, Adaptive Brake Assist can:
Rintervene unnecessarily
Rnot intervene
There is a risk of an accident.
Always pay careful attention to the traffic
situation and be ready to brake. Terminate
the intervention in a non-critical driving sit-
uation.
GWARNING
Adaptive Brake Assist does not react:
Rto people or animals
Rto oncoming vehicles
Rto crossing traffic
Rwhen cornering
As a result, the Adaptive Brake Assist may
not intervene in all critical conditions. There
is a risk of an accident.
Always pay careful attention to the traffic
situation and be ready to brake.
Always adapt your speed to suit the prevail-
ing road and traffic conditions.
Due to the nature of the system, particularlycomplicated but non-critical driving conditionsmay also cause Adaptive Brake Assist to inter-vene.
If Adaptive Brake Assist is not available due toa malfunction in the radar sensor system, thebrake system remains available with full brakeboosting effect and BAS.
Adaptive brake lights
iObserve the "Important safety notes" sec-tion (Ypage 57).
If you brake sharply from a speed of more than50 km/h or if braking is assisted by BAS orBrake Assist with Cross-Traffic Assist, thebrake lamps flash rapidly. In this way, traffictraveling behind you is warned in an evenmore noticeable manner.
If you brake sharply from a speed of more than70 km/h to a standstill, the hazard warninglamps are activated automatically. If thebrakes are applied again, the brake lamps lightup continuously. The hazard warning lampsswitch off automatically if you travel fasterthan 10 km/h. You can also switch off thehazard warning lamps using the hazard warn-ing button (Ypage 99).
ESP®(Electronic Stability Program)
General notes
iObserve the "Important safety notes" sec-tion (Ypage 57).
ESP®monitors driving stability and traction,i.e. power transmission between the tires andthe road surface.
If ESP®detects that the vehicle is deviatingfrom the direction desired by the driver, one ormore wheels are braked to stabilize the vehi-cle. The engine output is also modified to keep
60Driving safety systems
Safety

tics. Have the brake system checked at a
qualified specialist workshop.
Observe information regarding indicator andwarning lamps (Ypage 210) as well as displaymessages (Ypage 185).
ADAPTIVE BRAKE
iObserve the "Important safety notes" sec-tion (Ypage 57).
ADAPTIVE BRAKE enhances braking safety andoffers increased braking comfort. In additionto the braking function, ADAPTIVE BRAKE alsohas the HOLD function (Ypage 151) and hillstart assist (Ypage 120).
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)
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
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.
64Protection against theft
Safety

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
DTUnlocks the trunk lid