2019 LINCOLN MKZ Owners Manual

SAFETY PRECAUTIONS
WARNING: Do not overfill the fuel tank.The pressure in an overfilled tank may causeleakage and lead to fuel spray and fire.
WARNING: The fuel system may beunder pressure. If you hear a hissing soundnear the fuel filler inlet, do not refuel until thesound stops. Otherwise, fuel may spray out,which could cause serious personal injury.
WARNING: Fuels can cause seriousinjury or death if misused or mishandled.
WARNING: Fuel may contain benzene,which is a cancer-causing agent.
WARNING: When refueling always shutthe engine off and never allow sparks oropen flames near the fuel tank filler valve.Never smoke or use a cell phone whilerefueling. Fuel vapor is extremely hazardousunder certain conditions. Avoid inhalingexcess fumes.
Follow these guidelines when refueling:
•Extinguish all smoking materials and anyopen flames before refueling yourvehicle.
•Always switch the engine off beforerefueling.
•Automotive fuels can be harmful or fatalif swallowed. Fuel is highly toxic and ifswallowed can cause death or permanentinjury. If fuel is swallowed immediatelycall a physician, even if no symptoms areimmediately apparent. The toxic effectsof fuel may not be apparent for hours.
•Avoid inhaling fuel vapors. Inhaling fuelvapor can lead to eye and respiratorytract irritation. In severe cases, excessiveor prolonged breathing of fuel vapor cancause serious illness and permanentinjury.
•Avoid getting fuel in your eyes. If yousplash fuel in your eyes, immediatelyremove contact lenses (if worn), flush withwater for 15 minutes and seek medicalattention. Failure to seek proper medicalattention could lead to permanent injury.
•Fuels can be harmful if absorbed throughthe skin. If you splash fuel on your skin,clothing or both, promptly removecontaminated clothing and thoroughlywash your skin with soap and water.Repeated or prolonged skin contactcauses skin irritation.
•Be particularly careful if you are takingAntabuse or other forms of Disulfiram forthe treatment of alcoholism. Breathingfuel vapors could cause an adversereaction, serious personal injury orsickness. Immediately call a physician ifyou experience any adverse reactions.
FUEL QUALITY
Choosing the Right Fuel
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Your vehicle is designed to operate onregular unleaded gasoline with a minimumpump (R+M)/2 octane rating of 87.
Some fuel stations, particularly those in highaltitude areas, offer fuels posted as regularunleaded gasoline with an octane ratingbelow 87. The use of these fuels could resultin engine damage that will not be coveredby the vehicle warranty.
For best overall vehicle and engineperformance, premium fuel with an octanerating of 91 or higher is recommended. Theperformance gained by using premium fuelis most noticeable in hot weather as well asother conditions, for example when towinga trailer. See Towing (page 253).
Do not be concerned if the enginesometimes knocks lightly. However, if theengine knocks heavily while using fuel withthe recommended octane rating, contact anauthorized dealer to prevent any enginedamage.
We recommend Top Tier detergentgasolines, where available to help minimizeengine deposits and maintain optimal vehicleand engine performance. For additionalinformation, refer to www.toptiergas.com.
Note:Use of any fuel for which the vehiclewas not designed can impair the emissioncontrol system, cause loss of vehicleperformance, and cause damage to theengine which may not be covered by thevehicle Warranty.
Do not use:
•Diesel fuel.
•Fuels containing kerosene or paraffin.
•Fuel containing more than 15% ethanolor E85 fuel.
•Fuels containing methanol.
•Fuels containing metallic-based additives,including manganese-based compounds.
•Fuels containing the octane boosteradditive, methylcyclopentadienylmanganese tricarbonyl (MMT).
•Leaded fuel, using leaded fuel isprohibited by law.
The use of fuels with metallic compoundssuch as methylcyclopentadienyl manganesetricarbonyl (commonly known as MMT), whichis a manganese-based fuel additive, willimpair engine performance and affect theemission control system.
FUEL FILLER FUNNEL LOCATION
The fuel filler funnel is under the luggagecompartment floor covering.
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Fuel and Refueling

RUNNING OUT OF FUEL
Running out of fuel can cause damage notcovered by the vehicle Warranty.
If your vehicle runs out of fuel:
•Add a minimum of 1.3 gal (5 L) of fuel torestart the engine.
•You may need to switch the ignition fromoff to on several times after refueling toallow the fuel system to pump the fuelfrom the tank to the engine. Whenrestarting, cranking time takes a fewseconds longer than normal.
Note:If your vehicle is on a steep slope,more fuel may be required.
Filling a Portable Fuel Container
WARNING: Flow of fuel through a fuelpump nozzle can produce static electricity.This can cause a fire if you are filling anungrounded fuel container.
Use the following guidelines to avoidelectrostatic charge build-up, which canproduce a spark, when filling an ungroundedfuel container:
•Only use an approved fuel container totransfer fuel to your vehicle. Place thecontainer on the ground when filling it.
•Do not fill a fuel container when it isinside your vehicle (including the cargoarea).
•Keep the fuel pump nozzle in contactwith the fuel container when filling it.
•Do not use a device that holds the fuelpump nozzle lever in the fill position.
Adding Fuel From a Portable FuelContainer
WARNING: Do not insert the nozzle ofa fuel container or an aftermarket funnel intothe fuel filler neck. This may damage the fuelsystem filler neck or its seal and cause fuelto run onto the ground.
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WARNING: Do not try to pry open orpush open the capless fuel system withforeign objects. This could damage the fuelsystem and its seal and cause injury to youor others.
WARNING: Do not dispose of fuel inthe household refuse or the public sewagesystem. Use an authorized waste disposalfacility.
When refueling the vehicle fuel tank from afuel container, use the fuel filler funnelincluded with your vehicle. See Fuel FillerFunnel Location (page 167).
Note:Do not use aftermarket funnels as theymay not work with the capless fuel systemand can damage it.
When refueling the vehicle fuel tank from afuel container, do the following:
1. Fully open the fuel filler door.
2. Fully insert the fuel filler funnel into thefuel filler inlet.
3. Add fuel to your vehicle from the fuelcontainer.
4. Remove the fuel filler funnel.
5. Fully close the fuel filler door.
6. Clean the fuel filler funnel and place itback in your vehicle or correctly disposeof it.
Note:Extra funnels can be purchased froman authorized dealer if you choose todispose of the funnel.
REFUELING
WARNING: When refueling always shutthe engine off and never allow sparks oropen flames near the fuel tank filler valve.Never smoke or use a cell phone whilerefueling. Fuel vapor is extremely hazardousunder certain conditions. Avoid inhalingexcess fumes.
WARNING: The fuel system may beunder pressure. If you hear a hissing soundnear the fuel filler inlet, do not refuel until thesound stops. Otherwise, fuel may spray out,which could cause serious personal injury.
WARNING: Do not remove the fuelpump nozzle from its fully inserted positionwhen refueling.
WARNING: Do not overfill the fuel tank.The pressure in an overfilled tank may causeleakage and lead to fuel spray and fire.
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WARNING: Stop refueling when thefuel pump nozzle automatically shuts off forthe first time. Failure to follow this will fill theexpansion space in the fuel tank and couldlead to fuel overflowing.
WARNING: Wait at least five secondsbefore removing the fuel pump nozzle toallow any residual fuel to drain into the fueltank.
WARNING: Do not pry open the fueltank filler valve. This could damage the fuelsystem. Failure to follow this instruction couldresult in fire, personal injury or death.
Note:Your vehicle may not have a fuel tankfiller cap.
Left-hand side. To open the fuelfiller door, press the center rearedge of the fuel filler door andthen release.
A
Right-hand side. To open the fuelfiller door, press the center rearedge of the fuel filler door andthen release.
B
Left-hand side. Pull the rear of thefuel filler door to open it.C
Right-hand side. Pull the rear of thefuel filler door to open it.D
1. Fully open the fuel filler door.
Note:When you insert the correct size fuelpump nozzle a spring loaded inhibitor opens.
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AB
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A

2.Insert the fuel pump nozzle up to the firstnotch on the nozzle A. Keep it restingon the cover of the fuel tank filler pipeopening.
3. Hold the fuel pump nozzle in position Bwhen refueling. Holding the nozzle inposition A can affect the flow of fuel andshut off the fuel nozzle before the tankis full.
4.Operate the fuel pump nozzle within thearea shown.
5. When you finish refueling slightly raisethe fuel pump nozzle and slowly removeit.
6. Fully close the fuel filler door.
Note: Do not attempt to start the engine ifyou have filled the fuel tank with incorrectfuel. Incorrect fuel use can cause damagenot covered by the vehicle warranty. Haveyour vehicle immediately checked.
System Warnings (If Equipped)
If the fuel filler inlet does not fully close awarning message appears in the informationdisplay.
1.Stop your vehicle as soon as it is safe todo so and switch the engine off.
2. Shift into park (P) or neutral (N).
3. Apply the parking brake.
4. Fully open the fuel filler door.
5. Check the fuel filler inlet and the areaaround it for any items or debris that maybe obstructing its movement.
6.Fully insert a fuel pump nozzle or the fuelfiller funnel provided with your vehicleinto the fuel filler inlet. This action shoulddislodge any debris that may bepreventing the fuel filler inlet from fullyclosing.
7. Fully close the fuel filler door.
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A
B E206912
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Note: If this action corrects the problem themessage may not immediately reset. If themessage remains and a warning lampilluminates, have your vehicle checked assoon as possible.
FUEL CONSUMPTION
Advertised Capacity
The advertised capacity is the maximumamount of fuel that you can add to the fueltank after running out of fuel. Included in theadvertised capacity is an empty reserve. Theempty reserve is an unspecified amount offuel that remains in the fuel tank when thefuel gauge indicates empty.
Note:The amount of fuel in the emptyreserve varies and should not be relied uponto increase driving range.
Fuel Economy
Your vehicle calculates fuel economy figuresthrough the trip computer average fuelfunction. See General Information (page110).
The first 1,000 mi (1,500 km) of driving is thebreak-in period of the engine. A moreaccurate measurement is obtained after2,000 mi (3,000 km).
Impacting Fuel Economy
•Incorrect tire inflation pressures.
•Fully loading your vehicle.
•Carrying unnecessary weight.
•Adding certain accessories to yourvehicle such as bug deflectors, rollbarsor light bars, running boards and skiracks.
•Using fuel blended with alcohol. SeeFuel Quality (page 166).
•Fuel economy may decrease with lowertemperatures.
•Fuel economy may decrease whendriving short distances.
•You may get better fuel economy whendriving on flat terrain than when drivingon hilly terrain.
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Fuel and Refueling

EMISSION LAW
WARNING: Do not remove or alter theoriginal equipment floor covering orinsulation between it and the metal floor ofthe vehicle. The floor covering and insulationprotect occupants of the vehicle from theengine and exhaust system heat and noise.On vehicles with no original equipment floorcovering insulation, do not carry passengersin a manner that permits prolonged skincontact with the metal floor. Failure to followthese instructions may result in fire orpersonal injury.
U.S. federal laws and certain state lawsprohibit removing or rendering inoperativeemission control system components. Similarfederal or provincial laws may apply inCanada. We do not approve of any vehiclemodification without first determiningapplicable laws.
Tampering with emissions controlsystems including related sensorsor the Diesel Exhaust Fluid systemcan result in reduced engine power and theillumination of the service engine soon light.
Tampering With a Noise ControlSystem
Federal laws prohibit the following acts:
•Removal or rendering inoperative by anyperson other than for purposes ofmaintenance.
•Repair or replacement of any device orelement of the design incorporated intoa new vehicle for the purpose of noisecontrol prior to its sale or delivery to theultimate purchaser or while it is in use.
•The use of the vehicle after any personremoves or renders inoperative anydevice or element of the design.
The U.S. Environmental Protection Agencymay presume to constitute tampering asfollows:
•Removal of hood blanket, fender apronabsorbers, fender apron barriers,underbody noise shields or acousticallyabsorptive material.
•Tampering or rendering inoperative theengine speed governor, to allow enginespeed to exceed manufacturerspecifications.
If the engine does not start, runs rough,experiences a decrease in engineperformance, experiences excess fuelconsumption or produces excessive exhaustsmoke, check for the following:
•A plugged or disconnected air inletsystem hose.
•A plugged engine air filter element.
•Water in the fuel filter and waterseparator.
•A clogged fuel filter.
•Contaminated fuel.
•Air in the fuel system, due to looseconnections.
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Engine Emission Control