ignition LINCOLN MKX 2018 Service Manual

GENERAL INFORMATION
WARNINGS
Extended idling at high engine speedscan produce very high temperaturesin the engine and exhaust system, creatingthe risk of fire or other damage.
Do not park, idle or drive your vehicleon dry grass or other dry ground cover.The emission system heats up the enginecompartment and exhaust system, creatingthe risk of fire.
Do not start the engine in a closedgarage or in other enclosed areas.Exhaust fumes can be toxic. Always openthe garage door before you start the engine.
Exhaust leaks may result in entry ofharmful and potentially lethal fumesinto the passenger compartment. If you smellexhaust fumes inside your vehicle, have yourvehicle inspected immediately. Do not driveif you smell exhaust 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 keyless starting system may notfunction if the key is close to metal objectsor electronic devices such as cellularphones.
Note:A valid key must be located insideyour vehicle to switch the ignition on andstart the engine.
Ignition Modes
The keyless starting system has threemodes:
Off: Turns the ignition off.
•Without applying the brake pedal, pressand release the button once when theignition is in the on mode, or when theengine is running but the vehicle is notmoving.
On: All electrical circuits are operational andthe warning lamps and indicators illuminate.
•Without applying the brake pedal, pressand release the button once.
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Starting and Stopping the EngineE191075

Note:You may have to press the pushbutton ignition switch twice to switch theignition on.
Start: Starts the engine.
•Press the brake pedal, and then pressthe button for any length of time. Anindicator light on the button illuminateswhen then ignition is on and when theengine starts.
STARTING A GASOLINE ENGINE
When you start the engine, the idle speedincreases. This helps to warm up theengine. If the engine idle speed does notslow down automatically, have your vehiclechecked by an authorized dealer.
Note: You can crank the engine for a totalof 60 seconds without the engine startingbefore the starting system temporarilydisables. The 60 seconds does not have tobe all at once. For example, if you crank theengine three times for 20 seconds each time,without the engine starting, you reached the60-second time limit. A message appearsin the information display alerting you thatyou exceeded the cranking time. Youcannot attempt to start the engine for atleast 15 minutes. After 15 minutes, you arelimited to a 15-second engine cranking time. You need to wait 60 minutes before you cancrank the engine for 60 seconds again.
Before starting the engine check thefollowing:
•Make sure all occupants have fastenedtheir seatbelts.
•Make sure the headlamps and electricalaccessories are off.
•Make sure the parking brake is on.
•Make sure the transmission is in park (P)or neutral (N).
Keyless Starting
Note:Do not touch the accelerator pedal.
Note:A valid passive key must be locatedinside your vehicle to switch the power onand start your vehicle.
1. Fully depress the brake pedal.
2. Briefly press the push button ignitionswitch.
The system does not function if:
•The passive key frequencies are jammed.
•The key battery has no charge.
If you are unable to start the engine, do thefollowing:
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Starting and Stopping the Engine

1. Open the floor console storagecompartment lid.
2. With the buttons facing upward and theunlock button facing the front of yourvehicle, place the intelligent access keyinto the backup slot.
3. With the key in this position, press thebrake pedal then press the push buttonignition switch to switch the ignition onand start your vehicle.
Fast Restart
The fast restart feature allows you to restartyour vehicle within 10 seconds of switchingit off, even if it does not detect a validpassive key.
Within 10 seconds of switching your vehicleoff, press the brake pedal and press the pushbutton ignition switch. After 10 seconds, youcan no longer start your vehicle if it does notdetect a valid passive key.
Once your vehicle starts, it remains runninguntil you press the push button ignitionswitch, even if your vehicle does not detecta valid passive key. If you open and close adoor while your vehicle is running, thesystem searches for a valid passive key.
Failure to Start
If you cannot start the engine after threeattempts, wait 10 seconds and follow thisprocedure:
1. Fully depress the brake pedal.
2. Shift into park (P).
3. Fully depress the accelerator pedal.
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Starting and Stopping the EngineE203693
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4. Keep the accelerator pedal fullydepressed and press the push buttonignition switch until the engine starts.
Automatic Engine Shutdown
This feature automatically shuts down theengine if it has been idling for an extendedperiod. The ignition also turns off to savebattery power. Before your vehicle shutsdown, a message appears in the informationdisplay showing a timer counting down. Ifyou do not intervene within 30 seconds, yourvehicle shuts down. Another messageappears in the information display to informyou that your vehicle has shut down to savefuel. Start your vehicle as normal.
Automatic Engine Shutdown Override
Note: You cannot permanently switch offthe automatic shutdown. When you switchit off temporarily, it turns on at the nextignition cycle.
You can stop the shutdown, or reset thetimer, at any point before the 30-secondcountdown has expired by doing any of thefollowing:
•Reset the timer by pressing the brake oraccelerator pedal.
•Temporarily switch off the shutdownfeature during the current ignition cycleusing the information display. SeeGeneral Information (page 118).
•Press OK or RESET to temporarily switchthe feature off during the current ignitioncycle.
Stopping the Engine When YourVehicle is Stationary
1. Shift into park (P).
2. Press the push button ignition switch.
3. Apply the parking brake.
Note:The ignition, all electrical circuits andall warning lamps and indicators will beturned off.
Note:If the engine is idling for 30 minutes,the ignition and engine automatically shutsdown.
Stopping the Engine When YourVehicle is Moving
WARNING
Switching off the engine when thevehicle is still moving will result in aloss of brake and steering assistance. Thesteering will not lock, but higher effort willbe required. When the ignition is switchedoff, some electrical circuits, including airbags, warning lamps and indicators may alsobe off. If the ignition was turned offaccidentally, you can shift into neutral (N) andre-start the engine.
1.Put the transmission into neutral (N) anduse the brakes to bring your vehicle to asafe stop.
2.When your vehicle has stopped, shift intopark (P).
3. Press and hold the push button ignitionswitch until the engine stops, or press itthree times within two seconds.
4. Apply the parking brake.
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Starting and Stopping the Engine

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. We do not recommend these fuels.
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 264).
Do not use any fuel other than thoserecommended because they could lead toengine damage that will not be covered bythe vehicle Warranty.
Note:Use of any fuel other than thoserecommended can impair the emissioncontrol system and cause a loss of vehicleperformance.
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.
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.
FUEL FILLER FUNNEL LOCATION
The fuel filler funnel is in the spare wheelstorage tray.
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.
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Fuel and Refueling

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.
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
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.
Filling the Fuel Tank
For consistent results when refueling:
•Turn the ignition off before fueling; aninaccurate reading results if the engineis left running.
•Use the same fill rate (low-medium-high)each time the tank is filled.
•Allow no more than one automaticshut-off when refueling.
Results are most accurate when the fillingmethod is consistent.
Calculating Fuel Economy
Do not measure fuel economy during thefirst 1,000 mi (1,600 km) of driving (this is yourengine’s break-in period). A more accuratemeasurement is obtained after 2,000 mi(3,200 km) to 3,000 mi (4,800 km). Also, fuelexpense, frequency of fill ups or fuel gaugereadings are not accurate ways to measurefuel economy.
1. Fill the fuel tank completely and recordthe initial odometer reading.
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Fuel and Refueling

•An open or pinched sensor hose.
•Incorrect engine oil level.
•Incorrect fuel for climatic conditions.
•Incorrect engine oil viscosity for climacticconditions.
Note:Some vehicles have a lifetime fuel filterthat is integrated with the fuel tank. Regularmaintenance or replacement is not needed.
Note:If these checks do not help you correctthe concern, have your vehicle checked assoon as possible.
Noise Emissions Warranty, ProhibitedTampering Acts and Maintenance
On January 1, 1978, Federal regulationbecame effective governing the noiseemission on trucks over 10,000 lb (4,536 kg)Gross Vehicle Weight Rating (GVWR). Thepreceding statements concerning prohibitedtampering acts and maintenance, and thenoise warranty found in the Warranty Guide,are applicable to complete chassis cabs over10,000 lb (4,536 kg) GVWR.
CATALYTIC CONVERTER
WARNINGS
Do not park, idle or drive your vehicleon dry grass or other dry ground cover.The emission system heats up the enginecompartment and exhaust system, creatingthe risk of fire.
The normal operating temperature ofthe exhaust system is very high. Neverwork around or attempt to repair any part ofthe exhaust system until it has cooled. Usespecial care when working around thecatalytic converter. The catalytic converterheats up to a very high temperature afteronly a short period of engine operation andstays hot after the engine is switched off.
Exhaust leaks may result in entry ofharmful and potentially lethal fumesinto the passenger compartment. If you smellexhaust fumes inside your vehicle, have yourvehicle inspected immediately. Do not driveif you smell exhaust fumes.
Your vehicle has various emission controlcomponents and a catalytic converter thatenables it to comply with applicable exhaustemission standards.
To make sure that the catalytic converter andother emission control components continueto work properly:
•Do not crank the engine for more than10 seconds at a time.
•Do not run the engine with a spark pluglead disconnected.
•Do not push-start or tow-start yourvehicle. Use booster cables. See JumpStarting the Vehicle (page 276).
•Use only the specified fuel listed.
•Do not switch the ignition off when yourvehicle is moving.
•Avoid running out of fuel.
•Have the items listed in scheduledmaintenance information performedaccording to the specified schedule.
Note:Resulting component damage maynot be covered by the vehicle Warranty.
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Engine Emission Control

If the service engine soon indicator remainson, have your vehicle serviced at the firstavailable opportunity. Although somemalfunctions detected by the OBD-II may nothave symptoms that are apparent, continueddriving with the service engine soon indicatoron can result in increased emissions, lowerfuel economy, reduced engine andtransmission smoothness and lead to morecostly repairs.
Readiness for Inspection andMaintenance (I/M) Testing
Some state and provincial and localgovernments may haveInspection/Maintenance (I/M) programs toinspect the emission control equipment onyour vehicle. Failure to pass this inspectioncould prevent you from getting a vehicleregistration.
If the service engine soon indicatoris on or the bulb does not work,your vehicle may need service.See On-Board Diagnostics.
Your vehicle may not pass the I/M test if theservice engine soon indicator is on or notworking properly (bulb is burned out), or ifthe OBD-II system has determined that someof the emission control systems have notbeen properly checked. In this case, thevehicle is not ready for I/M testing.
If the vehicle’s engine or transmission hasjust been serviced, or the battery hasrecently run down or been replaced, theOBD-II system may indicate that the vehicleis not ready for I/M testing. To determine ifthe vehicle is ready for I/M testing, turn theignition key to the on position for 15 secondswithout cranking the engine. If the serviceengine soon indicator blinks eight times, itmeans that the vehicle is not ready for I/Mtesting; if the service engine soon indicatorstays on solid, it means that your vehicle isready for I/M testing.
The OBD-II system checks the emissioncontrol system during normal driving. Acomplete check may take several days.
If the vehicle is not ready for I/M testing, youcan perform the following driving cycleconsisting of mixed city and highway driving:
1. 15 minutes of steady driving on anexpressway or highway followed by 20minutes of stop-and-go driving with atleast four 30-second idle periods.
2.Allow your vehicle to sit for at least eighthours with the ignition off. Then, start thevehicle and complete the above drivingcycle. The vehicle must warm up to itsnormal operating temperature. Oncestarted, do not turn off the vehicle untilthe above driving cycle is complete.
If the vehicle is still not ready for I/M testing,you need to repeat the above driving cycle.
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Engine Emission Control

3. The gearshift button you select willilluminate and the selected gear willappear in the instrument cluster.
4. Release the brake pedal and yourtransmission will remain in the selectedgear.
Note:If you attempt to leave your vehiclewhile it is in gear, your vehicle willautomatically shift into park (P). Safety beltand door monitors determine your intent andmake the shift for you. During this time, amessage will appear in the informationdisplay screen prompting you to make theshift to park (P).
Note:To put your vehicle in gear with thedoor open, perform steps 1-4. See theAutomatic Return to Park section in thischapter for more information on this feature.
Park (P)
With the transmission in park (P), your vehiclelocks the transmission and prevents thewheels from turning. Always come to acomplete stop before putting your vehicleinto and out of park (P). An audible tonesounds once you select park (P).
When the ignition is turned off, the vehiclewill automatically shift into park (P). If theignition is turned off while the vehicle ismoving, it will first shift into neutral (N) untila slow enough speed is reached. The vehiclewill then shift into park (P) automatically.
Automatic Return to Park
Note:This feature will not operate when yourvehicle is in Stay in Neutral mode or neutraltow.
Your vehicle has a safety feature that willautomatically shift your vehicle into park (P)when any of the following conditions occur:
•You turn the ignition off
•You open the driver's door with yoursafety belt unlatched
•Your safety belt is unlatched while thedriver's door is open
If you turn the ignition off while your vehicleis moving, your vehicle will first shift intoneutral (N) until it slows down enough to shiftinto park (P) automatically.
Note:If you have waited an extended periodof time (2-15 minutes) before starting yourvehicle, unlatching your safety belt will causethis feature to activate, even with the driver'sdoor closed.
Note:This feature may not work properly ifthe door ajar switch is malfunctioning. If yourdoor ajar indicator does not illuminate whenyou open the driver’s door or the indicatorilluminates with the driver’s door closed, seeyour authorized dealer.
Reverse (R)
With the transmission in reverse (R), yourvehicle will move backward. Always cometo a complete stop before shifting into andout of reverse (R).
Neutral (N)
With the transmission in neutral (N), you canstart your vehicle and it is free to roll. Holdthe brake pedal down while in this position.
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Transmission

The instrument cluster will display yourcurrently selected gear.
The transmission will automatically upshift ifyour engine speed is too high or downshiftif your engine speed is too low.
Note:The system will stay in manual controluntil you make another shift button selection.For example, drive (D).
Brake-Shift Interlock Override
WARNINGS
When doing this procedure, you needto take the transmission out of park (P)which means your vehicle can roll freely. Toavoid unwanted vehicle movement, alwaysfully apply the parking brake prior to doingthis procedure. Use wheels chocks ifappropriate.
If the parking brake is fully released,but the brake warning lamp remainsilluminated, the brakes may not be workingproperly. Have your vehicle checked as soonas possible.
Do not drive your vehicle until youverify that the stoplamps are working.
Note:See your authorized dealer as soonas possible if this procedure is used.
Note:For some markets this feature isdisabled.
Note:This feature will only function if your12-volt battery has power.
Use the brake-shift interlock override tomove your transmission from the park (P)position in the event of an electricalmalfunction or if your vehicle has a deadbattery.
1. Apply the parking brake and turn yourignition off before performing thisprocedure.
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TransmissionE144821 E155990