2018 LINCOLN MKX check engine

Stability Control and Traction ControlIndicator
Flashes during operation.
If it does not illuminate when youswitch the ignition on, or remainson when the engine is running, this indicatesa malfunction. Have your vehicle checkedas soon as possible.
Note:The system automatically turns off ifthere is a malfunction.
See Using Stability Control (page 209). SeeUsing Traction Control (page 206).
Stability Control and Traction ControlOff Warning Lamp
It illuminates when you switch thesystem off.
AUDIBLE WARNINGS AND
INDICATORS
Keyless Warning Alert
The horn will sound twice when you exit yourvehicle with the intelligent access key andyour vehicle is in RUN, indicating your vehicleis still on.
Headlamps On Warning Chime
Sounds when you remove the key from theignition and open the driver's door and youhave left the headlamps or parking lampson.
Parking Brake On Warning Chime
Sounds when you have left the parking brakeon and drive your vehicle. If the warningchime remains on after you have releasedthe parking brake, have the system checkedby your authorized dealer immediately.
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Instrument ClusterE138639 E130458

Maintenance
ActionMessage
Stop the vehicle as soon as safely possible, turn off the engine. Check the oil level. If the warningstays on or continues to come on with your engine running, contact an authorized dealer assoon as possible.
Low Engine Oil Pressure
Displayed when the engine oil life remaining is 10% or less. See Engine Oil Check (page 314).Change Engine Oil Soon
Displayed when the oil life left reaches 0%. See Engine Oil Check (page 314).Oil Change Required
Indicates the brake fluid level is low and the brake system should be inspected immediately.See Brake Fluid Check (page 323).Brake Fluid Level Low
Displays when the brake system needs servicing. Stop the vehicle in a safe place. Contact anauthorized dealer.Check Brake System
Displays when the engine coolant temperature is excessively high.Engine Coolant Over Temperature
Displays when the washer fluid is low and needs to be refilled.Washer Fluid Level Low
Displays when the engine has reduced power in order to help reduce high coolant temperatures.Power Reduced to Lower Engine Temp
Displays to indicate that the vehicle is still in Transport or Factory mode. This may not allow somefeatures to operate properly. See an authorized dealer.Transport / Factory Mode
Informs the driver that the powertrain needs service due to a powertrain malfunction.See Manual
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Information Displays

Park Aid
ActionMessage
Displays when the system has detected a condition that requires service. Contact an authorizeddealer. See Principle of Operation (page 210).Check Front Park Aid
Displays when the system has detected a condition that requires service. Contact an authorizeddealer. See Principle of Operation (page 210).Check Rear Park Aid
Displays the park aid status.Front Park Aid On Off
Displays the park aid status.Rear Park Aid On Off
Park Brake
ActionMessage
Displays when the parking brake is set, the engine is running and the vehicle is driven more than3 mph (5 km/h). If the warning stays on after the parking brake is released, contact an authorizeddealer.
Park Brake Engaged
The electric parking brake system has detected a condition that requires service. See anauthorized dealer.Park Brake Malfunction Service Now
Displays when the electric parking brake is not set.Park Brake Not Applied
Displays when the electric parking brake is running a diagnostic check.Park Brake Maintenance Mode
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Information Displays

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

•Check for heat anywhere in the electricalhookup once the system has beenoperating for approximately 30 minutes.
•Make sure the system is unplugged andproperly stowed before starting anddriving your vehicle. Make sure theprotective cover seals the prongs of theblock heater cord plug when not in use.
•Make sure the heater system is checkedfor proper operation before winter.
Using the Engine Block Heater
Make sure the receptacle terminals are cleanand dry prior to use. Clean them with a drycloth if necessary.
The heater uses 0.4 to 1.0 kilowatt-hours ofenergy per hour of use. The system does nothave a thermostat. It achieves maximumtemperature after approximately three hoursof operation. Using the heater longer thanthree hours does not improve systemperformance and unnecessarily useselectricity.
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Starting and Stopping the Engine

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

EMISSION LAW
WARNING
Do not remove or alter the originalequipment floor covering or insulationbetween it and the metal floor of the vehicle.The floor covering and insulation protectoccupants of the vehicle from the engineand exhaust system heat and noise. Onvehicles 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

•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