2018 LINCOLN NAVIGATOR light

GENERAL INFORMATION
WARNING: Extended idling at highengine speeds can produce very hightemperatures in the engine and exhaustsystem, creating the risk of fire or otherdamage.
WARNING: Do not park, idle or driveyour vehicle on dry grass or other dryground cover. The emission system heatsup the engine compartment and exhaustsystem, creating the risk of fire.
WARNING: Do not start the enginein a closed garage or in other enclosedareas. Exhaust fumes can be toxic. Alwaysopen the garage door before you start theengine.
WARNING: Exhaust leaks may resultin entry of harmful and potentially lethalfumes into the passenger compartment. Ifyou smell exhaust fumes inside yourvehicle, have your vehicle inspectedimmediately. Do not drive if you smellexhaust fumes.
If you disconnect the battery, your vehiclemay exhibit some unusual drivingcharacteristics for approximately 5 mi (8 km)after you reconnect it. This is because theengine management system must realignitself with the engine. You can disregard anyunusual driving characteristics during thisperiod.
The powertrain control system meets allCanadian interference-causing equipmentstandard requirements regulating theimpulse electrical field or radio noise.
When you start the engine, avoid pressingthe accelerator pedal before and duringoperation. Only use the accelerator pedalwhen you have difficulty starting the engine.
KEYLESS STARTING
Note:The system may not function if thepassive key is close to metal objects orelectronic devices, for example keys or acell phone.
Note:A valid passive key must be locatedinside your vehicle to switch the power onand start your vehicle.
Note:A light on the button illuminates whenthe ignition is on and when your vehiclestarts.
Switching the Ignition On
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•Elevation is below about 11,000 ft(3,350 m).
•Ambient temperature is moderate.
•If equipped with selectable drive modesand when you select Normal, Conserve,Slippery.
•The trailer is not connected.
•Tow haul mode not engaged.
•You have not selected Manual mode.
The green Auto-Start-Stopindicator light on the instrumentcluster will illuminates to indicatewhen the automatic engine stop occurs.
If the instrument cluster isequipped with a greyAuto-Start-Stop indicator light, itilluminates when automatic engine stop isnot available due to one of the above notedconditions not being met.
Automatic Engine Restart
Any of the following conditions results in anautomatic restart of the engine:
•You have removed your foot from thebrake pedal.
•You press the accelerator pedal.
•You press the accelerator and the brakepedal at the same time.
•The driver seatbelt becomes unfastenedor the driver door is ajar.
•Your vehicle is moving.
•The interior compartment does not meetcustomer comfort when air conditioningor heat is on.
•Fogging of the windows could occur andthe air conditioning is on.
•The battery is not within optimaloperating conditions.
•You have exceeded the maximum engineoff time.
•When you press the Auto-Start-Stopbutton with the engine automaticallystopped.
•The front defroster is turned to the Maxsetting.
•When you shift into park (P) the enginewill restart.
Any of the following conditions may result inan automatic restart of the engine:
•You have increased the blower fan speedor changed the climate controltemperature.
•You have an electrical accessory turnedon or plugged in.
Note:You may notice that the climate seatfan fluctuates during an automatic restart.
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Disabling Auto-Start-Stop
Press the Auto-Start-Stop button located onthe center console to switch the system off.The button illuminates. This only deactivatesthe system for the current ignition cycle.Press the button again to restoreAuto-Start-Stop function.
Note:If the Shift to P, Restart Enginemessage appears and the amberAuto-Start-Stop indicator light is flashing,automatic restart is not available. You mustrestart the vehicle manually. SeeInformation Displays (page 119).
If your vehicle is in an engine offAuto-Start-Stop state and you change thetransmission to reverse ®) when the brakepedal is not pressed, the messageAuto-Start-Stop Press Brake to Start Engineappears. You must press the brake pedalwithin 60 seconds or a shift to park (P) anda manual restart is required.
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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 298).
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 Ford,Motorcraft or Ford-authorized parts formaintenance replacements or for service ofcomponents affecting emission control, suchnon-Ford parts should be equivalent togenuine Ford 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