2019 LINCOLN NAVIGATOR light

FUEL QUALITY
Choosing the Right Fuel
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 297).
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 in the spare wheelstorage tray.
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4. Hold the fuel pump nozzle in position Bwhen refueling. Holding the fuel pumpnozzle in position A can affect the flowof fuel and shut off the fuel pump nozzlebefore the fuel tank is full.
5.Operate the fuel pump nozzle within thearea shown.
6. When you finish refueling slightly raisethe fuel pump nozzle and slowly removeit.
7. Fully close the fuel filler door.
Do not attempt to start the engine if you havefilled the fuel tank with incorrect fuel.Incorrect fuel use could cause damage notcovered by the vehicle Warranty. Have yourvehicle immediately checked.
Refueling System Warning (If Equipped)
If the fuel tank filler valve does not fully close,a message could appear in the informationdisplay.
Message
Check Fuel Fill Inlet
If the message appears, do the following:
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 tank filler valve for anydebris that may be restricting itsmovement.
6. Remove any debris from the fuel tankfiller valve.
7.Fully insert a fuel pump nozzle or the fuelfiller funnel provided with your vehicleinto the fuel filler pipe. See Fuel FillerFunnel Location (page 200). This actionshould dislodge any debris that may bepreventing the fuel tank filler valve fromfully closing.
8.Remove the fuel pump nozzle or fuel fillerfunnel from the fuel filler pipe.
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9. Fully close the fuel filler door.
Note:The message may not immediatelyreset. If the message continues to appearand a warning lamp illuminates, have yourvehicle checked as soon 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.
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 200).
•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 alterthe original equipment floor covering orinsulation between it and the metal floorof the vehicle. The floor covering andinsulation protect occupants of the vehiclefrom the engine and exhaust system heatand noise. On vehicles with no originalequipment floor covering insulation, do notcarry passengers in a manner that permitsprolonged skin contact with the metal floor.Failure to follow these instructions mayresult in fire or personal 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

The scheduled maintenance items listed inscheduled maintenance information areessential to the life and performance of yourvehicle and to its emissions system.
If you use anything other than Lincoln,Motorcraft or Lincoln-authorized parts formaintenance replacements or for service ofcomponents affecting emission control, suchnon-Lincoln parts should be equivalent togenuine Lincoln Motor Company parts inperformance and durability.
Illumination of the service engine soonindicator, charging system warning light orthe temperature warning light, fluid leaks,strange odors, smoke or loss of enginepower could indicate that the emissioncontrol system is not working properly.
An improperly operating or damaged exhaustsystem may allow exhaust to enter thevehicle. Have a damaged or improperlyoperating exhaust system inspected andrepaired immediately.
Do not make any unauthorized changes toyour vehicle or engine. By law, vehicleowners and anyone who manufactures,repairs, services, sells, leases, tradesvehicles, or supervises a fleet of vehicles arenot permitted to intentionally remove anemission control device or prevent it fromworking. Information about your vehicle’semission system is on the Vehicle EmissionControl Information Decal located on or nearthe engine. This decal also lists enginedisplacement.
Please consult your warranty information forcomplete details.
On-Board Diagnostics (OBD-II)
Your vehicle has a computer known as theon-board diagnostics system (OBD-II) thatmonitors the engine’s emission controlsystem. The system protects the environmentby making sure that your vehicle continuesto meet government emission standards. TheOBD-II system also assists a servicetechnician in properly servicing your vehicle.
When the service engine soonindicator illuminates, the OBD-IIsystem has detected a malfunction.Temporary malfunctions may cause theservice engine soon indicator to illuminate.Examples are:
1. Your vehicle has run out of fuel—theengine may misfire or run poorly.
2.Poor fuel quality or water in the fuel—theengine may misfire or run poorly.
3. The fuel fill inlet may not have closedproperly. See Refueling (page 202).
4. Driving through deep water—theelectrical system may be wet.
You can correct these temporarymalfunctions by filling the fuel tank with goodquality fuel, properly closing the fuel fill inletor letting the electrical system dry out. Afterthree driving cycles without these or anyother temporary malfunctions present, theservice engine soon indicator should stay offthe next time you start the engine. A drivingcycle consists of a cold engine startupfollowed by mixed city and highway driving.No additional vehicle service is required.
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Engine Emission Control

Note:This only functions if your 12-voltbattery has power and the starter can spinthe engine. If vehicle battery voltage is notsufficient, an external 12-volt power sourcesuch as jumper cables, battery charger orjump pack may be required for this featureto function.
Note:Once in this mode, sufficient batteryvoltage must be maintained or your vehiclereturns to park.
WARNING: When doing thisprocedure, you need to take thetransmission out of park (P) which meansyour vehicle can roll freely. To avoidunwanted vehicle movement, always fullyapply the parking brake prior to doing thisprocedure. Use wheels chocks ifappropriate.
1. Do not press the brake pedal. Press theSTART/STOP button.
2. Fully press down on the brake pedal.Keep the brakes applied through step 7.
3. Press the accelerator pedal to the floorand hold through step 7.
4. Press the neutral (N) button on thetransmission selector.
5. Press the neutral (N) button again toenter Stay in Neutral mode.
6. Press and release the push to startbutton, the transmission needs aminimum of 2 seconds to exit park.
7. When neutral (N) is displayed, the brakeand accelerator pedals can be released.
To exit Stay in Neutral mode, select adifferent gear.
A message appears in your informationdisplay screen when your vehicle hasentered Stay in Neutral mode.
Drive (D)
Drive (D) is the normal driving position forthe best fuel economy. The overdrivefunction allows automatic upshifts anddownshifts through gears one through ten.
Adaptive Tow/Haul Mode
WARNING: Do not use tow/haulwhen the road surface is slippery. Failureto follow this instruction could result in theloss of control of your vehicle.
Adaptive tow/haul has two modes, automaticthat is enabled by default and off.
To turn adaptive tow/haul off or on, use theinformation display controls. See GeneralInformation (page 120). The indicator lightilluminates in the instrument cluster.
Key adaptive tow/haul features:
•The system remains in the same mode,even after a key cycle.
•Is only available in normal drive modes(Normal 2H and Normal 4A).
The adaptive tow/haul feature improvestransmission operation when towing a traileror a heavy load. All transmission gear rangesare available when using adaptive tow/haul.
For information on towing. See Towing (page297).
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Transmission

Automatic Transmission AdaptiveLearning
This feature may increase durability andprovide consistent shift feel over the life ofyour vehicle. A new vehicle or transmissionmay have firm shifts, soft shifts or both. Thisoperation is considered normal and does notaffect function or durability of thetransmission. Over time, the adaptivelearning process fully updates transmissionoperation.
If Your Vehicle Gets Stuck In Mud orSnow
Note:Do not rock your vehicle if the engineis not at normal operating temperature ordamage to the transmission may occur.
Note:Do not rock your vehicle for more thana minute or damage to the transmission andtires may occur, or the engine may overheat.
If your vehicle gets stuck in mud or snow,you may rock it out by shifting betweenforward and reverse gears, stoppingbetween shifts in a steady pattern. Presslightly on the accelerator in each gear.
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Transmission

USING FOUR-WHEEL DRIVE
Note:For important information regardingsafe operation of this type of vehicle, seeGeneral Information in the Wheels and Tireschapter.
Note:Do not use SLIPPERY, DEEPCONDITIONS or SLOW CLIMB on dry, hardsurfaced roads. Doing so producesexcessive noise, increases tire wear and maydamage drive components. The 4X4 systemin these modes is only intended forconsistently slippery or loose surfaces.
Note:If you select a drive mode that uses4L when your vehicle is moving above 3 mph(5 km/h), the 4WD system does not performa shift. This is normal and should be noreason for concern. Refer to Shifting to orfrom 4L for proper operation.
4X4 Indicator Lights
4X2
Momentarily illuminates when youstart the vehicle or when a drivemode that uses 2H is selected.
4X4 AUTO
Continuously illuminates when adrive mode that uses 4A isselected.
4X4 HIGH
Continuously illuminates when adrive mode that uses 4H isselected.
4X4 LOW
Continuously illuminates when adrive mode that uses 4L isselected.
CHECK 4X4
Displays when a 4X4 fault ispresent.
Note:When a 4X4 system fault is present,the system typically remains in whichever4X4 mode was selected prior to the faultcondition occurring. It does not default to4X2 in all circumstances. When this warningis displayed, have your vehicle serviced byan authorized dealer.
4X4 Modes
WARNING: Vehicles with a highercenter of gravity (utility and four-wheeldrive vehicles) handle differently thanvehicles with a lower center of gravity(passenger cars). Avoid sharp turns,excessive speed and abrupt steering inthese vehicles. Failure to drive cautiouslyincreases the risk of losing control of yourvehicle, vehicle rollover, personal injuryand death.
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