sensor LINCOLN MKX 2018 Service Manual

System Not Available
The system may not turn on if there is:
•A blocked sensor.
•High brake temperature.
•A failure in the system or a relatedsystem.
Blocked SensorNote:You cannot see the sensor. It is behinda fascia panel.
A message displays if something obstructsthe radar signals from the sensor. Thesensor is in the lower grille. The systemcannot detect a vehicle ahead and does notfunction when something blocks the sensor.
Possible Causes and Actions for This Message Displaying:
ActionCause
Clean the grille surface in front of the radar or remove the objectcausing the obstruction.The surface of the radar is dirty or obstructed.
Wait a short time. It may take several minutes for the radar to detectthat it is free from obstruction.The surface of the radar is clean but the message remains in thedisplay.
Do not use the system in these conditions because it may not detectany vehicles ahead.Heavy rain or snow is interfering with the radar signals.
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DRIVER ALERT (If Equipped)
PRINCIPLE OF OPERATION
WARNINGS
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.
At all times, you are responsible forcontrolling your vehicle, supervisingthe system and intervening, if required.Failure to take care may result in the loss ofcontrol of your vehicle, serious personalinjury or death.
The system may not function if thesensor is blocked.
Take regular rest breaks if you feeltired. Do not wait for the system towarn you.
Certain driving styles may result in thesystem warning you even if you are notfeeling tired.
WARNINGS
In cold and severe weather conditionsthe system may not function. Rain,snow and spray can all limit sensorperformance.
The system will not operate if thesensor cannot track the road lanemarkings.
If damage occurs in the immediate areasurrounding the sensor, have yourvehicle checked as soon as possible.
Note:The system may not operate correctlyif you modify the ride height.
Note:Keep the windshield free fromobstructions. For example, bird droppings,insects and snow or ice.
Note:If the camera is blocked or if thewindshield is damaged, the system may notfunction.
Note:If enabled in the menu, the systemactivates at speeds above 40 mph (64 km/h).When below the activation speed, theinformation display informs the driver thatthe system is unavailable.
The system automatically monitors yourdriving behavior using various inputsincluding the front camera sensor.
If the system detects that your drivingalertness is reduced below a certainthreshold, the system alerts you using achime and a message in the informationdisplay.
USING DRIVER ALERT
Switching the System On and Off
Switch the system on or off using theinformation display. See General Information(page 118).
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When active, the system monitors youralertness level based upon your drivingbehavior in relation to the lane markings andother factors.
System Warnings
Note:The system does not issue warningsbelow approximately 40 mph (64 km/h).
The warning system has two stages. First,the system issues a temporary warning thatyou need to take a rest. This message onlyappears for a short time. If the systemdetects further reduction in driving alertness,it may issue another warning that remains inthe information display for a longer time. Youcan press OK on the steering wheel controlto clear the warning.
System Display
When active, the system runs automaticallyin the background and only issues a warningif required. You can view the status at anytime using the information display. SeeGeneral Information (page 118).
The alertness level is shown by six steps ina colored bar.
The current assessment of your alertness iswithin a typical range.
The current assessment of your alertnessindicates that you should rest as soon assafely possible.
The status bar travels from left to right as thecalculated alertness level decreases. As themeter approaches the rest icon, the colorturns from green to yellow to red.
The yellow position indicates the firstwarning is active and the red positionindicates the second warning is active.
Note:If you have recently received awarning, you should consider resting, evenif the current assessment is within the typicalrange.
Note:If the camera sensor cannot track theroad lane markings, or if your vehicle speeddrops below approximately 40 mph(64 km/h), the alertness level changes togrey for a short time and the informationdisplay informs you that the system isunavailable.
Resetting the System
You can reset the system by either:
•Switching the ignition off and on.
•Stopping the vehicle and then openingand closing the driver’s door.
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LANE KEEPING SYSTEM (If Equipped)
WARNINGS
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.
Always drive with due care andattention when using and operating thecontrols and features on your vehicle.
At all times, you are responsible forcontrolling your vehicle, supervisingthe system and intervening, if required.Failure to take care may result in the loss ofcontrol of your vehicle, serious personalinjury or death.
In cold and severe weather conditionsthe system may not function. Rain,snow and spray can all limit sensorperformance.
The system will not operate if thesensor cannot track the road lanemarkings.
WARNINGS
The sensor may incorrectly track lanemarkings as other structures or objects.This can result in a false or missed warning.
The system may not operate properlyif the sensor is blocked. Keep thewindshield free from obstruction.
If damage occurs in the immediate areasurrounding the sensor, have yourvehicle checked as soon as possible.
Note:The system works above 40 mph(64 km/h).
Note:The system works as long as thecamera can detect one lane marking.
Note:When Aid or both modes are selectedand the system detects no steering activityfor a short period, the system alerts you toput your hands on the steering wheel. Thesystem may detect a light grip or touch onthe steering wheel as hands off driving.
The system notifies you to stay in your lanethrough the steering system and theinstrument cluster display when the frontcamera detects an unintentional drift out ofyour lane is likely to occur. The systemautomatically detects and tracks the roadlane markings using a camera mountedbehind the interior rear view mirror.
Switching the System On and Off
Note:The system on or off setting is storeduntil it is manually changed, unless a MyKeyis detected. If the system detects a MyKeyit defaults to on and the mode is set to Alert.
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System Lights and Messages
When the system detects a vehicle, an alertindicator illuminates in the exterior mirror onthe side the approaching vehicle is comingfrom. If you turn the direction indicator on forthat side of your vehicle, the alert indicatorflashes.
Note:The system may not alert you if avehicle quickly passes through the detectionzone.
Blocked Sensors
The sensors are behind the rear bumper onboth sides of your vehicle.
Note:Keep the sensors free from snow, iceand large accumulations of dirt.
Note:Do not cover the sensors with bumperstickers, repair compound or other objects.
Note:Blocked sensors could affect systemperformance.
If the sensors are blocked, a message mayappear in the information display. SeeInformation Messages (page 125). The alertindicators remain illuminated but the systemdoes not alert you.
System Errors
If the system detects a fault, a warning lampilluminates and a message displays. SeeInformation Messages (page 125).
Switching the System Off and On
You can switch the system off using theinformation display. See GeneralInformation (page 118). When you switch thesystem off, a warning lamp illuminates anda message displays. When you switch thesystem on or off, the alert indicators flashtwice.
Note:The system remembers the last settingwhen you start your vehicle.
Note:The system may not correctly operatewhen towing a trailer. For vehicles with atrailer tow module and tow bar approved byus, the system turns off when you attach atrailer. For vehicles with an aftermarkettrailer tow module or tow bar, werecommend that you switch the system offwhen you attach a trailer.
To permanently switch the system off,contact an authorized dealer.
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CROSS TRAFFIC ALERT
WARNINGS
Do not use the cross traffic alert systemas a replacement for using the interiorand exterior mirrors or looking over yourshoulder before reversing out of a parkingspace. The cross traffic alert system is not areplacement for careful driving.
WARNINGS
The system may not operate properlyduring severe weather conditions, forexample snow, ice, heavy rain and spray.Always drive with due care and attention.Failure to take care may result in a crash.
The system is designed to alert you ofvehicles approaching from the sides whenyou shift into reverse (R).
Using the Cross Traffic Alert System
The system is designed to detect vehiclesthat approach with a speed up to 37 mph(60 km/h). Coverage decreases when thesensors are partially, mostly or fullyobstructed. Slowly reversing helps increasethe coverage area and effectiveness.
The system turns on when you start theengine and you shift into reverse (R). Thesystem turns off when you shift out of reverse(R).
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Driving Aids

The sensor on the left-hand side is onlypartially obstructed and zone coverage onthe right-hand side is maximized.
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Zone coverage also decreases when parkingat narrow angles. The sensor on the left-handside is mostly obstructed and zone coverageon that side is severely reduced.
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System Lights, Messages and AudibleAlerts
When the system detects a vehicle, anindicator illuminates in the exterior mirror onthe side the approaching vehicle is comingfrom. A tone sounds and a message appearsin the information display.
Note:In exceptional conditions, the systemcould alert you even when there is nothingin the detection zone, for example a vehiclepassing in the distance.
Blocked Sensors
The sensors are behind the rear bumper onboth sides of your vehicle.
Note:Keep the sensors free from snow, iceand large accumulations of dirt.
Note:Do not cover the sensors with bumperstickers, repair compound or other objects.
Note:Blocked sensors could affect systemperformance.
If the sensors are blocked, a message mayappear in the information display when youshift into reverse (R). See InformationMessages (page 125).
System Limitations
The system may not correctly operate whenany of the following occur:
•The sensors are blocked.
•Adjacently parked vehicles or objects areobstructing the sensors.
•Vehicles approach at speeds greaterthan 37 mph (60 km/h).
•The vehicle speed is greater than 7 mph(12 km/h).
•You reverse out of an angled parkingspace.
System Errors
If the system detects a fault a messagedisplays. See Information Messages (page125).
Switching the System Off and On
You can temporarily switch the system offusing the information display. SeeInformation Messages (page 125). When youswitch system off, a message displays. SeeInformation Messages (page 125).
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Note:If you perceive Pre-Collision Assistalerts as being too frequent or disturbing,then you can reduce the alert sensitivity,though the manufacturer recommends usingthe highest sensitivity setting where possible.Setting lower sensitivity would lead to fewerand later system warnings.
Adjusting the Pre-Collision Assist Settings
You can adjust the Pre-Collision Assistsettings by using the information displaycontrol. See General Information (page 118).
If required, you can switch active braking offusing the information display control. SeeGeneral Information (page 118).
Note:Active braking automatically turns onevery time you switch the ignition on.
Blocked SensorsIf a message regarding a blocked sensor orcamera appears in the information display,the radar signals or camera images areobstructed. The radar sensor is locatedbehind a fascia cover near the driver side ofthe lower grille. With an obstructed radar,the Pre-Collision Assist system does notfunction and cannot detect a vehicle ahead.With the front camera obstructed, thePre-Collision Assist system does not respondto pedestrians or stationary vehicles and thesystem performance on moving vehiclesreduces. The following table lists possiblecauses and actions for when this messagedisplays.
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