warning light LINCOLN MKZ 2019 Service Manual

PRINCIPLE OF OPERATION
WARNING: Vehicle modificationsinvolving braking system, aftermarket roofracks, 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.
WARNING: Remember that evenadvanced technology cannot defy the lawsof physics. 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

Stability Control and Traction Control Features
Collision Warningwith Brake SupportTraction ControlSystemElectronic StabilityControlStability Control OffLightModeButton Functions
EnabledEnabledEnabledOn during bulb checkStability and tractioncontrol fully enabledDefault at start-up
EnabledDisabledEnabledOnTraction control offButton pressedmomentarily
DisabledEnabled with higherthreshold targetEnabled with higherthreshold targetOnSport mode (ifequipped)Button pressed twicerapidly
DisabledDisabledDisabledOnStability and tractioncontrol fully disabledButton pressed andheld more than fiveseconds
EnabledEnabledEnabledOffStability and tractioncontrol fully enabledButton pressed againafter deactivation
Note:Stability control fully off can only occurwhen you put the Active Suspension System(CCD) in sport mode. If you are not in sportmode or change from sport mode to anothermode, the stability control enables.
Note:Do not use Sport mode on publicroadways.
Your vehicle, if equipped with sport modeallows you to reduce normal stability andtraction control system intervention andprovide a more spirited driving experience.To enter sport mode, press the stabilitycontrol button twice rapidly. A messageappears in the information display that thesystem is now in sport mode.
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Stability Control

Active guidelinesA
CenterlineB
Fixed guideline: Green zoneC
Fixed guideline: Yellow zoneD
Fixed guideline: Red zoneE
Rear bumperF
Active guidelines are only shown with fixedguidelines. To use active guidelines, turn thesteering wheel to point the guidelines towardan intended path. If you change the steeringwheel position while reversing, your vehiclemight deviate from the original intendedpath.
The fixed and active guidelines fade in andout depending on your steering wheelposition. When your steering wheel positionis straight, the active guidelines are notvisible.
Always use caution while reversing. Objectsin the red zone are closest to your vehicleand objects in the green zone are fartheraway. Objects are getting closer to yourvehicle as they move from the green zoneto the yellow or red zones. Use the side viewmirrors and rear view mirror to get bettercoverage on both sides and rear of yourvehicle.
Enhanced Park Aids
Note:The reverse sensing system is noteffective at speeds above 3 mph (5 km/h)and may not detect certain angular ormoving objects.
The system uses red, yellow and greenhighlights that appear on top of the videoimage when the reverse sensing systemdetects an object. The alert highlights theclosest object detected. You can disable thereverse sensing alert if you have enhancedpark aids enabled, you will still see thedisplayed highlighted areas.
Selectable settings for this feature are ONand OFF.
Manual Zoom
WARNING: When manual zoom is on,the full area behind your vehicle is notshown. Be aware of your surroundings whenusing the manual zoom feature.
Note:Manual zoom is only available whenthe transmission is in reverse (R).
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Parking AidsABCD
F
E
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A vehicle graphic illuminates if there is avehicle detected in front of you.
Note:When adaptive cruise control is active,the speedometer may vary slightly from theset speed displayed in the informationdisplay.
Setting the Adaptive Cruise SpeedWhen Your Vehicle is Stationary
Follow a vehicle to a complete stop.
Press while keeping the brakepedal fully pressed.
The set speed adjusts to 20 mph (30 km/h).
The indicator, current gap setting and setspeed appear in the information display.
Following a Vehicle
WARNING: When following a vehicle,your vehicle does not always deceleratequickly enough to avoid a crash withoutdriver intervention. Always apply the brakeswhen necessary. Failing to do so may resultin a crash, serious injury or death.
WARNING: Adaptive cruise controlonly warns of vehicles detected by the radarsensor. In some cases there may be nowarning or a delayed warning. You shouldalways apply the brakes when necessary.Failure to do so may result in a crash, seriousinjury or death.
When a vehicle ahead of you enters thesame lane or a slower vehicle is ahead in thesame lane, the vehicle speed adjusts tomaintain a preset gap distance. A vehiclegraphic illuminates in the instrument cluster.
Note:The brakes may emit noise whenapplied by the system.
Note:When you are following a vehicle andyou switch on a direction indicator, adaptivecruise control may provide a small temporaryacceleration to help you pass.
Your vehicle maintains a consistent gap fromthe vehicle ahead until:
•The vehicle in front of you accelerates toa speed above the set speed.
•The vehicle in front of you moves out ofthe lane you are in.
•You set a new gap distance.
The system applies the brakes to slow yourvehicle to maintain a safe gap distance fromthe vehicle in front. The system only applieslimited braking. You can override the systemby applying the brakes.
If the system determines that its maximumbraking level is not sufficient, an audiblewarning sounds when the system continuesto brake. A red warning bar displays on thewindshield and you must take immediateaction.
Following a Vehicle to a Complete Stop
If your vehicle follows a vehicle to a completestop and remains stationary for less thanthree seconds, your vehicle accelerates froma stationary position to follow the vehicleahead.
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If your vehicle follows a vehicle toa complete stop and remainsstationary for more than threeseconds, press to follow the vehicle ahead.Or press the accelerator pedal.
Setting the Gap Distance
You can decrease or increase the distancebetween your vehicle and the vehicle in frontby pressing the gap control.
Press and release to decrease thegap distance.
Press and release to increase thegap distance.
The selected gap appears in the informationdisplay as shown by the bars in the image.
Note:The gap setting is time dependent andtherefore the distance adjusts with yourvehicle speed.
Note:It is your responsibility to select a gapappropriate to the driving conditions.
Adaptive Cruise Control Gap Settings
DynamicBehaviorDistance GapGraphicDisplay,Bars Indic-atedBetweenVehicles
Sport.Closest.1
Normal.Close.2
Normal.Medium.3
Comfort.Far.4
Each time you switch the system on, itselects the last chosen gap setting.
Overriding the Set Speed
WARNING: If you override the systemby pressing the accelerator pedal, it doesnot automatically apply the brakes tomaintain a gap from any vehicle ahead.
When you press the accelerator pedal, youoverride the set speed and gap distance.
Use the accelerator pedal normallyto intentionally exceed the setspeed limit.
When you override the system, the greenindicator light illuminates and the vehicleimage does not appear in the informationdisplay.
The system resumes operation when yourelease the accelerator pedal. The vehiclespeed decreases to the set speed, or a lowerspeed if following a slower vehicle.
Changing the Set Speed
Press and release to increase theset speed in small increments.
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Switching to Normal Cruise Control
WARNING: Normal cruise control willnot brake when your vehicle is approachingslower vehicles. Always be aware of whichmode you have selected and apply thebrakes when necessary.
The cruise control indicator lightreplaces the adaptive cruisecontrol indicator light if you selectnormal cruise control. The gap setting doesnot display, and the system does not respondto lead vehicles. Automatic braking remainsactive to maintain set speed.
You can change from adaptive cruise controlto normal cruise control through theinformation display.
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•Switching the ignition off and on.
•Stopping the vehicle and then openingand closing the driver’s door.
LANE KEEPING SYSTEM (If Equipped)
WARNING: You are responsible forcontrolling your vehicle at all times. Thesystem is designed to be an aid and doesnot relieve you of your responsibility to drivewith due care and attention. Failure to followthis instruction could result in the loss ofcontrol of your vehicle, personal injury ordeath.
WARNING: Always drive with due careand attention when using and operating thecontrols and features on your vehicle.
WARNING: In cold and severe weatherconditions the system may not function. Rain,snow and spray can all limit sensorperformance.
WARNING: The system will not operateif the sensor cannot track the road lanemarkings.
WARNING: The sensor may incorrectlytrack lane markings as other structures orobjects. This can result in a false or missedwarning.
WARNING: Large contrasts in outsidelighting can limit sensor performance.
WARNING: The system may notoperate properly if the sensor is blocked.Keep the windshield free from obstruction.
WARNING: If damage occurs in theimmediate area surrounding the sensor, haveyour vehicle checked as soon as possible.
WARNING: The system may notcorrectly operate if your vehicle is fitted witha suspension kit not approved by us.
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 mode is on and the systemdetects no steering activity for a short period,the system alerts you to put your hands onthe steering wheel. The system may detecta light grip or touch on the steering wheelas hands off driving.
Note:The system may not function if thecamera is blocked, or if the windshield isdamaged or dirty.
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Note:A high crown in the road or highcrosswinds may also make the steeringseem to wander or pull.
Adaptive Learning
The electronic power steering systemadaptive learning helps correct roadirregularities and improves overall handlingand steering feel. It communicates with thebrake system to help operate advancedstability control and accident avoidancesystems. Additionally, whenever the batteryis disconnected or a new battery installed,you must drive your vehicle a short distancebefore the system relearns the strategy andreactivates all systems.
PRE-COLLISION ASSIST (If Equipped)
WARNING: You are responsible forcontrolling your vehicle at all times. Thesystem is designed to be an aid and doesnot relieve you of your responsibility to drivewith due care and attention. Failure to followthis instruction could result in the loss ofcontrol of your vehicle, personal injury ordeath.
WARNING: The system does not detectvehicles that are driving in a differentdirection, pedestrians at night, cyclists oranimals. Failure to take care may result inthe loss of control of your vehicle, seriouspersonal injury or death.
WARNING: The system does notoperate during hard acceleration or steering.Failure to take care may lead to a crash orpersonal injury.
WARNING: The system may fail oroperate with reduced function during coldand severe weather conditions. Snow, ice,rain, spray and fog can adversely affect thesystem. Keep the front camera and radar freeof snow and ice. Failure to take care mayresult in the loss of control of your vehicle,serious personal injury or death.
WARNING: In situations where thevehicle camera has limited detectioncapability, this may reduce systemperformance. These situations include butare not limited to direct or low sunlight,vehicles at night without tail lights,unconventional vehicle types, pedestrianswith complex backgrounds, runningpedestrians, partly obscured pedestrians, orpedestrians that the system cannotdistinguish from a group. Failure to take caremay result in the loss of control of yourvehicle, serious personal injury or death.
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Driving Aids

WARNING: The system cannot helpprevent all crashes. Do not rely on thissystem to replace driver judgment and theneed to maintain a safe distance and speed.
Using the Pre-Collision Assist System
The Pre-Collision Assist system is active atspeeds above approximately 3 mph (5 km/h)and pedestrian detection is active at speedsup to 50 mph (80 km/h).
If your vehicle is rapidly approaching anotherstationary vehicle, a vehicle traveling in thesame direction as yours, or a pedestrianwithin your driving path, the system isdesigned to provide three levels offunctionality:
1. Alert
2. Brake Support
3. Active Braking
Alert: When active, a flashing visual warningappears and an audible warning tonesounds.
Brake Support: The system is designed tohelp reduce the impact speed by preparingthe brakes for rapid braking. The systemdoes not automatically apply the brakes. Ifyou press the brake pedal, the system couldapply additional braking up to maximumbraking force, even if you lightly press thebrake pedal.
Active Braking: Active braking may activateif the system determines that a collision isimminent. The system may help the driverreduce impact damage or avoid the crashcompletely.
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.
Distance Indication and Alert
Distance Indication and Alert is a functionthat provides a graphical indication of thetime gap to other preceding vehiclestraveling in the same direction. The DistanceIndication and Alert screen in the informationdisplay shows a graphic similar to the onethat follows.
If the time gap to a preceding vehicle issmall, a red visual indication displays.
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TOWING A TRAILER
WARNING: Do not exceed theGVWR or the GAWR specified on thecertification label.
WARNING: Towing trailers beyondthe maximum recommended grosstrailer weight exceeds the limit of yourvehicle and could result in enginedamage, transmission damage,structural damage, loss of vehiclecontrol, vehicle rollover and personalinjury.
Note:There may be electrical itemssuch as fuses or relays that can affecttrailer towing operation. See Fuses(page 277).
The load capacity of your vehicle isdesignated by weight not volume. Youmay not necessarily be able to use allavailable space when loading yourvehicle or trailer.
Towing a trailer places extra load on theengine, transmission, axle, brakes, tires,and suspension. Inspect thesecomponents before, during and aftertowing.
Load Placement
To help minimize how trailer movementaffects the vehicle when driving:
•Load the heaviest items closest tothe trailer floor.
•Load the heaviest items in the centerof the left and right side trailer tires.
•Load the heaviest items above thetrailer axles or just slightly forwardtoward the trailer tongue. Do notallow the final trailer tongue weightto go above or below 10-15% of theloaded trailer weight.
•Select a ball mount with the correctrise or drop. When both the loadedvehicle and trailer are connected, thetrailer frame should be level, orslightly angled down toward thevehicle, when viewed from the side.
When driving with a trailer or payload, aslight takeoff vibration or shudder maybe present due to the increased payloadweight. Additional information regardingproper trailer loading and setting yourvehicle up for towing is located in theLoad Carrying chapter. See Load Limit(page 248).
You can also find information in the RV& Trailer Towing Guide available at yourauthorized dealer, or online.
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Towing