2018 LINCOLN MKC sensor

•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 255).
•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

When the system is active, your vehicle willremain stationary on the slope for two tothree seconds after you release the brakepedal. This allows you time to move yourfoot from the brake to the accelerator pedal. The brakes release automatically when theengine has sufficient torque to prevent yourvehicle from rolling down the grade. This isan advantage when pulling away on a slope,for example from a car park ramp, trafficlights or when reversing uphill into a parkingspace.
The system will activate automatically on anyslope that will cause significant vehiclerollback. For vehicles with a manualtransmission, you can switch this feature offusing the information display. SeeInformation Displays (page 109). The systemwill remain on or off depending on how itwas last set.
Note:There is no warning lamp to indicatethe system is either on or off.
Note:If your vehicle is equipped with AutoHold, Hill Start Assist will not be availablewhile Auto Hold is active.
Using Hill Start Assist
1. Bring your vehicle to a completestandstill. Keep the brake pedal pressedand select an uphill gear (for example,drive (D) or first (1) when facing uphill orreverse (R) when facing downhill).
2. If the sensors detect that your vehicle ison a slope, the system will activateautomatically.
3. When you remove your foot from thebrake pedal, your vehicle will remain onthe slope without rolling away for abouttwo or three seconds. This hold time willautomatically be extended if you are inthe process of driving off.
4. Drive off in the normal manner. Thebrakes will release automatically.
Switching the System On and Off
You can switch this feature on or off if yourvehicle is equipped with a manualtransmission and an information display. SeeGeneral Information (page 109). The systemremembers the last setting when you startyour vehicle.
If your vehicle is not equipped with a manualtransmission and an information display, youcannot turn the system on or off. When youswitch the ignition on, the systemautomatically turns on.
AUTO HOLD
WARNINGS
The system does not replace theparking brake. When you leave yourvehicle, always apply the parking brake.
You must remain in your vehicle whenthe system turns on. At all times, youare responsible for controlling your vehicle,supervising the system and intervening, ifrequired. Failure to take care may result inthe loss of control of your vehicle, seriouspersonal injury or death.
The system will turn off if a malfunctionis apparent. Failure to take care mayresult in the loss of control of your vehicle,serious personal injury or death.
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Brakes

PRINCIPLE OF OPERATION
WARNINGS
Vehicle modifications involving brakingsystem, aftermarket roof racks,suspension, steering system, tireconstruction and wheel and tire size maychange the handling characteristics of yourvehicle and may adversely affect theperformance of the electronic stability controlsystem. In addition, installing any stereoloudspeakers may interfere with andadversely affect the electronic stabilitycontrol system. Install any aftermarket stereoloudspeaker as far as possible from the frontcenter console, the tunnel, and the frontseats in order to minimize the risk ofinterfering with the electronic stability controlsensors. Reducing the effectiveness of theelectronic stability control system could leadto an increased risk of loss of vehicle control,vehicle rollover, personal injury and death.
WARNINGS
Remember that even advancedtechnology cannot defy the laws ofphysics. It’s always possible to lose controlof a vehicle due to inappropriate driver inputfor the conditions. Aggressive driving on anyroad condition can cause you to lose controlof your vehicle increasing the risk of personalinjury or property damage. Activation of theelectronic stability control system is anindication that at least some of the tires haveexceeded their ability to grip the road; thiscould reduce the operator’s ability to controlthe vehicle potentially resulting in a loss ofvehicle control, vehicle rollover, personalinjury and death. If your electronic stabilitycontrol system activates, SLOW DOWN.
The system automatically turns on each timeyou switch the ignition on.
If a fault occurs in either the stability controlor the traction control system, you mayexperience the following conditions:
•The stability and traction control lightilluminates steadily.
•The stability control and traction controlsystems do not enhance your vehicle'sability to maintain traction of the wheels.
If a driving condition activates either thestability control or the traction control systemyou may experience the following conditions:
•The stability and traction control lightflashes.
•Your vehicle slows down.
•Reduced engine power.
•A vibration in the brake pedal.
•The brake pedal is stiffer than usual.
•If the driving condition is severe and yourfoot is not on the brake, the brake pedalmay move as the system applies higherbrake force.
The stability control system has severalfeatures built into it to help you maintaincontrol of your vehicle:
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Stability Control

PRINCIPLE OF OPERATION
WARNINGS
To help avoid personal injury, alwaysuse caution when in reverse (R) andwhen using the sensing system.
The system may not detect objectswith surfaces that absorb reflection.Always drive with due care and attention.Failure to take care may result in a crash.
Traffic control systems, inclementweather, air brakes, external motorsand fans may affect the correct operation ofthe sensing system.This may cause reducedperformance or false alerts.
The system may not detect small ormoving objects, particularly those closeto the ground.
Note:If your vehicle is equipped withMyKey™, the sensing system cannot beturned off when a MyKey™ is present. SeePrinciple of Operation (page 59).
Note:Keep the sensors, located on thebumper or fascia, free from snow, ice andlarge accumulations of dirt. If the sensorsare covered, the system’s accuracy can beaffected. Do not clean the sensors with sharpobjects.
Note:If your vehicle sustains damage to thebumper or fascia, leaving it misaligned orbent, the sensing zone may be alteredcausing inaccurate measurement ofobstacles or false alerts.
Note:Certain add-on devices installedaround the bumper or fascia may createfalse alerts. For example, large trailerhitches, bike or surfboard racks, license platebrackets, bumper covers or any other devicethat may block the normal detection zoneof the system. Remove the add-on device toprevent false alerts.
Note:When a trailer is connected to yourvehicle, the rear parking aid may detect thetrailer and therefore provide an alert. Disablethe rear parking aid when a trailer isconnected to prevent the alert.
The sensing system warns the driver ofobstacles within a certain range of yourvehicle. The system turns on automaticallywhenever you switch the ignition on.
The system can be switched off through theinformation display menu or from the pop-upmessage that appears once you shift thetransmission into reverse (R). See GeneralInformation (page 109).
If a fault is present in the system, a warningmessage appears in the information display.See Information Messages (page 114).
REAR PARKING AID
The rear sensors are only active when thetransmission is in reverse (R). As your vehiclemoves closer to the obstacle, the rate of theaudible warning increases. When theobstacle is less than 12 in (30 cm) away, thewarning sounds continuously. If the systemdetects a stationary or receding objectfarther than 12 in (30 cm) from the corners ofthe bumper, the tone sounds for only threeseconds. Once the system detects an objectapproaching, the warning sounds again.
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Parking Aids

Coverage area of up to 6 ft (1.8 m) from therear bumper. There may be decreasedcoverage area at the outer corners of thebumper.
The system detects certain objects while thetransmission is in reverse (R) :
•Your vehicle is moving toward astationary object at a speed of 3 mph(5 km/h) or less.
•Your vehicle is not moving, but a movingobject is approaching the rear of yourvehicle at a speed of 3 mph (5 km/h) orless.
•Your vehicle is moving at a speed of lessthan 3 mph (5 km/h) and a moving objectis approaching the rear of your vehicleat a speed of less than 3 mph (5 km/h).
The system provides audio warnings onlywhen your vehicle is moving or when yourvehicle is stationary and the detectedobstacle is less than 12 in (30 cm) away fromthe bumper.
FRONT PARKING AID (If Equipped)
The front sensors are active when thetransmission is in any position other thanpark (P) or neutral (N), and your vehicle ismoving but at a speed below 6 mph(10 km/h).
Coverage area of up to 28 in (70 cm) fromthe front bumper. The coverage areadecreases at the outer corners.
When your vehicle approaches an object, awarning tone sounds. When your vehiclemoves closer to an object, the warning tonerepeat rate increases. The warning tonesounds continuously when an object is 12 in(30 cm) or less from the front bumper.
If the transmission is in reverse (R), the frontsensing system provides audio warningswhen your vehicle is moving and thedetected obstacle is stationary or movingtowards your vehicle.
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Parking AidsE130178 E187330

If the transmission is in drive (D) or any otherforward gear (for example, low (L), sport (S)or any forward gear in a manualtransmission), the front sensing systemprovides audio warnings when your vehicleis moving below a speed of 7 mph (12 km/h)and an obstacle is located inside thedetection area.
ACTIVE PARK ASSIST (If Equipped)
Parallel Parking, Parallel Park OutAssist
WARNINGS
You must remain in your vehicle whenthe system turns on. At all times, youare responsible for controlling your vehicle,supervising the system and intervening, ifrequired. Failure to take care may result inthe loss of control of your vehicle, seriouspersonal injury or death.
The sensors may not detect objects inheavy rain or other conditions thatcause interference.
WARNINGS
Active park assist does not apply thebrakes under any circumstances.
The system is designed to aid thedriver. It is not intended to replace yourattention and judgment. You are stillresponsible to drive with due care andattention.
Note:Active Park Assist is a multi-stepprocess and may require you to shift yourtransmission multiple times. Follow theon-screen instructions until you complete theparking process.
Note:The Blind Spot Information Systemdoes not detect traffic alongside or behindyour vehicle during an Active Park Assistmaneuver.
Active Park Assist detects an availableparallel parking space and automaticallysteers your vehicle into the space(hands-free) while you control theaccelerator, gearshift and brakes. The systemvisually and audibly guides you to park yourvehicle.
If you are uncomfortable with the proximityto any vehicle or object, you may choose tooverride the system by grabbing the steeringwheel or by pressing the Active Park Assistbutton.
Parallel Park Out Assist automatically steersyour vehicle out of a parallel parking space(hands-free) while you control theaccelerator, gearshift and brakes. The systemvisually and audibly guides you to entertraffic.
The system may not correctly operate in anyof the following conditions:
•You use a spare tire or a tire significantlyworn more than the other tires.
•One or more tires are improperly inflated.
•You try to park on a tight curve.
•Something passes between the frontbumper and the parking space. Forexample, a pedestrian or cyclist.
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Parking Aids

•The edge of the neighboring parkedvehicle is high off the ground. Forexample, a bus, tow truck or flatbedtruck.
•The weather conditions are poor. Forexample, during heavy rain, snow or fog.
Note: Keep the sensors on the bumper orfascia free from snow, ice and largeaccumulations of dirt. Covered sensors canaffect the system's accuracy. Do not cleanthe sensors with sharp objects.
Note:The sensors may not detect objectswith surfaces that absorb ultrasonic wavesor cause ultrasonic interference. Forexample, motorcycle exhaust, truck airbrakes or horns.
Note:Following a change in tire size, thesystem must recalibrate and operation maybe impaired for a short time.
Do not use the system if:
•You have attached a foreign object closeto the sensors on the front or rear of yourvehicle. For example, a bike rack ortrailer.
•You attach an overhanging object to theroof. For example, a surfboard.
•A foreign object damages or obstructsthe front or rear bumper or side sensors.
•The correct tire size is not in use on yourvehicle. For example, a mini-spare tire.
Using Active Park Assist - Parallel Parking
Press the Active Park Assist buttononce to search for a parallelparking space.
When driving at a speed less than 22 mph(35 km/h), the system automatically scansboth sides of your vehicle for an availableparking space. The system displays amessage and a corresponding graphic toindicate it is searching for a parking space.Use the direction indicator to selectsearching either to the left-hand side orright-hand side of your vehicle.
Note:If the direction indicators are not used,the system defaults to the passenger sideof your vehicle.
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Parking AidsE146186

If a problem occurs with the system, awarning message displays accompanied bya tone. Have your vehicle checked as soonas possible.
Troubleshooting the System
Possible CauseSymptom
You may have the traction control system switched off.
The system does not look for a space.The transmission is in reverse (R). Your vehicle must be moving forward to be able todetect a parking space.
The sensors may be covered. For example, snow, ice or dirt buildup. Covered sensorscan affect how the system functions.
The system does not offer a parking space.
There is not enough room in the parking space for your vehicle to safely park.
There is not enough space for the parking maneuver on the opposite side of the parkingspace.
The parking space is more than 5 ft (1.5 m) or less than 16 in (0.4 m) away.
Your vehicle speed is greater than 22 mph (35 km/h).
You recently disconnected or replaced the battery. After a battery disconnect, you mustdrive your vehicle on a straight road for a short period of time.
Your vehicle is rolling in the opposite direction of the current transmission position. Forexample, rolling forward when in reverse (R).The system does not position the vehicle correctly.
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Parking Aids