catalytic converter MERCEDES-BENZ SLC 2019 Owners Manual

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

ignite if in contact with the exhaust system
or parts of the engine that heat up. There is
a risk of fire.
Carry out regular checks to make sure that
there are no flammable foreign materials in
the engine compartment or in the exhaust
system.
During a cold start, the engine runs at higherspeeds to enable the catalytic converter toreach its operating temperature. The sound ofthe engine may change during this time.
Automatic transmission
XDepress the brake pedal and keep itdepressed.
XShift the transmission to position].Transmission position display]is shownin the multifunction display.
iYou can start the engine in transmissionposition]and\\.
Starting procedure with the SmartKey
To start the engine using the SmartKey insteadof KEYLESS-GO, pull the Start/Stop button outof the ignition lock.
XTurn the SmartKey to positionI(Ypage 118) in the ignition lock and releaseit as soon as the engine is running.
Using KEYLESS-GO to start the engine
The Start/Stop button can be used to start thevehicle manually without inserting the Smart-Key into the ignition lock. The Start/Stop but-ton must be inserted in the ignition lock andthe SmartKey must be in the vehicle. Thismode for starting the engine operates inde-pendently of the ECO start/stop automaticengine start function.
XDepress the brake pedal and keep itdepressed.
XPress the Start/Stop button once(Ypage 118).The engine starts.
Pulling away
General notes
GWARNING
If the engine speed is above the idling speed
and you engage transmission position:
orF, the vehicle could pull away sud-
denly. There is a risk of an accident.
When engaging transmission position:
orF, always firmly depress the brake
pedal and do not simultaneously accelerate.
!Change gear in good time and avoid spin-ning the wheels. You could otherwise dam-age the vehicle.
Depress the accelerator carefully when pullingaway.
The vehicle locks centrally once you havepulled away. The locking knobs in the doorsdrop down.
You can open the doors from the inside at anytime.
You can also deactivate the automatic lockingfeature (Ypage 178).
It is only possible to shift the transmissionfrom position]to the desired position if youdepress the brake pedal. Only then is the shiftlock released.
iUpshifts take place at higher enginespeeds after a cold start. This helps the cat-alytic converter to reach its operating tem-perature more quickly.
Information on the automatic release of theelectric parking brake (Ypage 136).
Hill start assist
Hill start assist helps you when pulling awayforward or in reverse on an uphill gradient. Itholds the vehicle for a short time after youhave removed your foot from the brake pedal.This gives you enough time to move your footfrom the brake pedal to the accelerator pedaland to depress it before the vehicle begins toroll.
120Driving
Driving and parking

RMake sure that the positive terminal of a connected battery does not come into contact with
vehicle parts.
RNever place metal objects or tools on a battery.
RIt is important that you observe the described order of the battery terminals when connect-
ing and disconnecting a battery.
RWhen jump-starting, make sure that the battery poles with identical polarity are connected.
RIt is particularly important to observe the described order when connecting and disconnect-
ing the jumper cables.
RNever connect or disconnect the battery terminals while the engine is running.
GWARNING
A discharged battery can freeze at temperatures below freezing point. When jump-starting the
vehicle or charging the battery, gases can escape from the battery. There is a risk of an explo-
sion.
Allow the frozen battery to thaw out before charging it or jump-starting.
!Avoid repeated and lengthy starting attempts. Otherwise, the catalytic converter could bedamaged by the non-combusted fuel.
If the indicator/warning lamps do not light up at low temperatures, it is very likely that the dis-charged battery has frozen. In this case, you may neither charge the battery nor jump-start thevehicle. The service life of a thawed-out battery may be shorter. The starting characteristics canbe impaired, particularly at low temperatures. Have the thawed-out battery checked at a quali-fied specialist workshop.
Do not start the vehicle using a rapid charging device. If your vehicle's battery is discharged, theengine can be jump-started from another vehicle or from a donor battery using jumper cables.Observe the following points:
RThe battery is not accessible in all vehicles. If the other vehicle's battery is not accessible,jump-start the vehicle using a donor battery or a jump-starting device.
RYou may only jump-start the vehicle when the engine and exhaust system are cold.
RDo not start the engine if the battery is frozen. Let the battery thaw first.
ROnly jump-start from batteries with a 12 V voltage rating.
ROnly use jumper cables which have a sufficient cross-section and insulated terminal clamps.
RIf the battery is fully discharged, leave the battery that is being used to jump-start connectedfor a few minutes before attempting to start. This charges the battery slightly.
RMake sure that the two vehicles do not touch.
Make sure that:
RThe jumper cables are not damaged.
RBare parts of the terminal clamp do not come into contact with other metal parts while thejumper cables are connected to the battery.
RThe jumper cables cannot come into contact with parts which can move when the engine isrunning, such as the V-belt pulley or the fan.
XSecure the vehicle by applying the electric parking brake.
XShift the transmission to position].
XMake sure that the ignition is switched off. All indicator lamps in the instrument cluster mustbe off. When using the SmartKey, turn the SmartKey to position