ignition LINCOLN MKZ 2018 Workshop Manual

Operating AWD Vehicles With Spareor Mismatched Tires
WARNING
Only use replacement tires and wheelsthat are the same size, load index,speed rating and type (such as P-metricversus LT-metric or all-season versusall-terrain) as those originally provided byFord. The recommended tire and wheel sizemay be found on either the SafetyCompliance Certification Label (affixed toeither the door hinge pillar, door-latch post,or the door edge that meets the door-latchpost, next to the driver’s seating position), orthe Tire Label which is located on the B-Pillaror edge of the driver’s door. If thisinformation is not found on these labels, thenyou should contact your authorized dealeras soon as possible. Use of any tire or wheelnot recommended by Ford can affect thesafety and performance of your vehicle,which could result in an increased risk of lossof vehicle control, vehicle rollover, personalinjury and death.
A spare tire of a different size other than thetire provided should never be used. TheAWD system may disable automatically andenter front-wheel drive only mode to protectdriveline components if a non-full sized tireis installed. This condition may display anAWD OFF message in the informationdisplay. If there is an AWD OFF message inthe information display from using a non-fullsized spare tire, this indicator should turn offafter reinstalling the repaired or replacednormal road tire and cycling the ignition offand on. It is recommended to reinstall therepaired or replaced road tire as soon aspossible.
Major dissimilar tire sizes between the frontand rear axles (for example, 17 inch lowprofile tires on the front axle and 22 inch highprofile tires on the rear axle) could cause theAWD system to stop functioning and defaultto front-wheel drive or damage the AWDsystem. However, the AWD system iscapable of tolerating any combination of newand worn tires of the same original tire size.For example, using 3 worn tread tires and 1new tread tire all of the same original tiresize, can be tolerated by the AWD system.
Driving In Special Conditions With All-Wheel Drive (AWD)
AWD vehicles are equipped for driving onsand, snow, mud and rough roads and haveoperating characteristics that are somewhatdifferent from conventional vehicles, both onand off the highway.
When driving at slow speeds in deep sandunder high outside temperatures, use a lowgear when possible. Lower gear operationwill maximize the engine and transmissioncooling capability.
Under severe operating conditions, the A/Cmay cycle on and off to protect overheatingof the engine.
Basic operating principles in specialconditions
•Drive slower in strong crosswinds whichcan affect the normal steeringcharacteristics of your vehicle.
•Be extremely careful when driving onpavement made slippery by loose sand,water, gravel, snow or ice.
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If Your Vehicle Goes Off the Edge of thePavement
•If your vehicle goes off the edge of thepavement, slow down, but avoid severebrake application, ease the vehicle backonto the pavement only after reducingyour speed. Do not turn the steeringwheel too sharply while returning to theroad surface.
•It may be safer to stay on the apron orshoulder of the road and slow downgradually before returning to thepavement. You may lose control if youdo not slow down or if you turn thesteering wheel too sharply or abruptly.
•It often may be less risky to strike smallobjects, such as highway reflectors, withminor damage to your vehicle rather thanattempt a sudden return to the pavementwhich could cause the vehicle to slidesideways out of control or rollover.Remember, your safety and the safety ofothers should be your primary concern.
If Your Vehicle Gets Stuck
WARNINGS
Always set the parking brake fully andmake sure you shift the gearshift leverto park (P). Switch the ignition off and removethe key whenever you leave your vehicle.
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 spin the wheels at over 34 mph(55 km/h). The tires may fail and injurea passenger or bystander.
Note:Do not rock the vehicle if the engineis not at normal operating temperature ordamage to the transmission may occur.
Note:Do not rock the vehicle for more thana few minutes or damage to the transmissionand tires may occur or the engine mayoverheat.
If your vehicle gets stuck in mud or snow itmay be rocked out by shifting betweenforward and reverse gears, stoppingbetween shifts, in a steady pattern. Presslightly on the accelerator in each gear.
If your vehicle is equipped withAdvanceTrac® with Roll Stability Control™, itmay be beneficial to disengage theAdvanceTrac® with Roll Stability Control™system while attempting to rock the vehicle.
Emergency Maneuvers
•In an unavoidable emergency situationwhere a sudden sharp turn must bemade, remember to avoid "over-driving"your vehicle (that is, turn the steeringwheel only as rapidly and as far asrequired to avoid the emergency).Excessive steering will result in lessvehicle control, not more. Additionally,smooth variations of the acceleratorand/or brake pedal pressure should beutilized if changes in vehicle speed arecalled for. Avoid abrupt steering,
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acceleration or braking which could resultin an increased risk of loss of vehiclecontrol, vehicle rollover and/or personalinjury. Use all available road surface toreturn the vehicle to a safe direction oftravel.
•In the event of an emergency stop, avoidskidding the tires and do not attempt anysharp steering wheel movements.
•If the vehicle goes from one type ofsurface to another (that is, from concreteto gravel) there will be a change in theway the vehicle responds to a maneuver(steering, acceleration or braking). Again,avoid these abrupt inputs.
Sand
Most of the time traction control improvestire traction by managing wheel slip throughBrake, Engine, and AWD calibrations.However, during low speed driving, disablingtraction control in deep sand can help keepthe wheels moving to maintain vehiclemomentum.
When driving over sand, try to keep all fourwheels on the most solid area of the trail.Avoid reducing the tire pressures but shiftto a lower gear and drive steadily throughthe terrain. Apply the accelerator slowly andavoid spinning the wheels.
Do not drive your vehicle in deep sand foran extended period of time. This could causethe AWD system to overheat and default tofront-wheel drive. If this occurs, an AWD OFFmessage displays in the information display.To resume normal AWD function as soon aspossible, stop the vehicle in a safe locationand stop the engine for at least 10 minutes.After the engine has been restarted and theAWD system has adequately cooled, theAWD OFF message turns off and normalAWD function returns. In the event theengine is not stopped, the AWD OFFmessage turns off when the system coolsand normal AWD function returns.
When driving at slow speeds in deep sandunder high outside temperatures, use L (Low)gear when possible. L (Low) gear operationwill maximize the engine and transmissioncooling capability.
Under severe operating conditions, the A/Cmay cycle on and off to protect overheatingof the engine.
Avoid excessive speed because vehiclemomentum can work against you and causethe vehicle to become stuck to the point thatassistance may be required from anothervehicle. Remember, you may be able to backout the way you came if you proceed withcaution.
Mud and Water
If you must drive through high water, driveslowly. Traction or brake capability may belimited.
When driving through water, determine thedepth; avoid water higher than the bottomof the wheel rims (for cars) or the bottom ofthe hubs (for trucks) (if possible) and proceedslowly. If the ignition system gets wet, thevehicle may stall.
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GENERAL INFORMATION
Note: Occasional brake noise is normal. Ifa metal-to-metal, continuous grinding orcontinuous squeal sound is present, thebrake linings may be worn-out. Have thesystem checked by an authorized dealer. Ifyour vehicle has continuous vibration orshudder in the steering wheel while braking,have it checked by an authorized dealer.
Note:Brake dust may accumulate on thewheels, even under normal drivingconditions. Some dust is inevitable as thebrakes wear and does not contribute tobrake noise. See Cleaning the Wheels(page 333).
Note:Depending on applicable laws andregulations in the country for which yourvehicle was originally built, your brake lampsmay flash during heavy braking. Followingthis, your hazard lights may also flash whenyour vehicle comes to a stop.
See Warning Lamps andIndicators (page 106).
Wet brakes result in reduced brakingefficiency. Gently press the brake pedal afew times when driving from a car wash orstanding water to dry the brakes.
Brake Over Accelerator
In the event the accelerator pedal becomesstuck or entrapped, apply steady and firmpressure to the brake pedal to slow thevehicle and reduce engine power. If youexperience this condition, apply the brakesand bring your vehicle to a safe stop. Movethe transmission to park (P), switch theengine off and apply the parking brake. Inspect the accelerator pedal for anyinterference. If none are found and thecondition persists, have your vehicle towedto the nearest authorized dealer.
Brake Assist
Brake assist detects when you brake rapidlyby measuring the rate at which you press thebrake pedal. It provides maximum brakingefficiency as long as you press the pedal,and can reduce stopping distances in criticalsituations.
Anti-lock Brake System
This system helps you maintain steeringcontrol during emergency stops by keepingthe brakes from locking.
This lamp momentarily illuminateswhen you turn the ignition on. Ifthe light does not illuminate duringstart up, remains on or flashes, the systemmay be disabled. Have the system checkedby an authorized dealer. If the anti-lock brakesystem is disabled, normal braking is stilleffective.
If the brake warning lampilluminates when you release theparking brake, have the systemchecked by an authorized dealer.
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HINTS ON DRIVING WITH ANTI-
LOCK BRAKES
The anti-lock braking system does noteliminate the risks when:
•You drive too closely to the vehicle infront of you.
•Your vehicle is hydroplaning.
•You take corners too fast.
•The road surface is poor.
Note: If the system activates, the brakepedal may pulse and may travel further. Maintain pressure on the brake pedal. Youmay also hear a noise from the system. Thisis normal.
ELECTRIC PARKING BRAKE
WARNING
Always set the parking brake and leaveyour vehicle with the transmission inpark (P).
Note:When you apply the electric parkingbrake in certain conditions, for example ona steep hill, the electric parking brake mayreapply the brakes within three to tenminutes. As a result, you may notice variousnoises when you apply and release theelectric parking brake. This is normal and nocause for concern.
The electric parking brake replaces theconventional handbrake. The operatingswitch is on the instrument panel to the leftof the steering wheel.
Applying the electric parking brake
WARNING
The brake system warning lamp willflash when applying the electricparking brake. If the brake system warninglamp continues to flash there could be aproblem with your electric parking brake.Have your vehicle checked as soon aspossible.
Note:The brake system warning lampilluminates for 10 seconds if you switch theignition off after you apply the electricparking brake, or you apply the electricparking brake after you switch the ignitionoff.
Note:The electric parking brake will notautomatically apply. You must apply theelectric parking brake using the electricparking brake switch.
Pull the switch to apply the electric parkingbrake.
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You can manually release the electric parkingbrake by:
1. Switching the ignition on.
2. Pressing the brake pedal.
3. Pressing the electric parking brakeswitch.
When you release the electric parking brake,the brake system warning lamp turns off.
Driving with a Trailer
Depending on the grade and the weight ofthe trailer, your vehicle and trailer may rollbackwards slightly when you start on a slope.
To prevent this from happening, do thefollowing:
1.Pull the switch and hold it in this position.
2. Drive your vehicle, then release theswitch when you notice that the enginehas developed sufficient driving force.
Automatic release - drive away release
Your vehicle automatically releases theparking brake if:
•The driver door is closed.
•The vehicle is accelerated.
•There are no faults detected in theparking brake system.
Note:If the electric parking brake warninglamp stays illuminated, the electric parkingbrake will not automatically release. Youmust release the electric parking brake usingthe electric parking brake switch.
The brake system warning lamp will go offto confirm that you have released the electricparking brake.
Note:The electric parking brake drive awayrelease makes starting on a hill easier. Thisfeature releases the parking brakeautomatically when the vehicle has sufficientdrive force to move up the hill. To assuredrive away release when starting uphill,press the accelerator pedal quickly.
Battery With No Charge
WARNING
You will not be able to apply or releasethe electric parking brake if the batteryis low or has no charge.
If the battery is low or has no charge, usejumper cables and a booster battery.
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.
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PRINCIPLE OF OPERATION
The traction control system helps avoid drivewheel spin and loss of traction.
If your vehicle begins to slide, the systemapplies the brakes to individual wheels and,when needed, reduces engine power at thesame time. If the wheels spin whenaccelerating on slippery or loose surfaces,the system reduces engine power in orderto increase traction.
USING TRACTION CONTROL
WARNING
The stability and traction control lightilluminates steadily if the systemdetects a failure. Make sure you did notmanually disable the traction control systemusing the information display controls or theswitch. If the stability control and tractioncontrol light is still illuminating steadily, havethe system serviced by an authorized dealerimmediately. Operating your vehicle with thetraction control disabled could lead to anincreased risk of loss of vehicle control,vehicle rollover, personal injury and death.
The system automatically turns on each timeyou switch the ignition on.
If your vehicle is stuck in mud or snow,switching traction control off may bebeneficial as this allows the wheels to spin.
Note:When you switch traction control off,stability control remains fully active.
Switching the System Off
When you switch the system off or on, amessage appears in the information displayshowing system status.
You can switch the system off by either usingthe information display controls or the switch.
Using the Information Display Controls
You can switch this feature off or on in theinformation display. See General Information(page 111).
Using a Switch (If Equipped)
Use the traction control switch on theinstrument panel to switch the system off oron.
System Indicator Lights and Messages
The stability and traction controllight:
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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

Electronic Stability Control
The system enhances your vehicle’s abilityto prevent skids or lateral slides by applyingbrakes to one or more of the wheelsindividually and, if necessary, reducingengine power.
Traction Control
The system enhances your vehicle’s abilityto maintain traction of the wheels bydetecting and controlling wheel spin. SeeUsing Traction Control (page 201).
Vehicle without stability controlskidding off its intended route.A
Vehicle with stability controlmaintaining control on a slipperysurface.
B
USING STABILITY CONTROL
The system automatically turns on each timeyou switch the ignition on.
The electronic stability control portion of thesystem disables when the transmission is inreverse (R) or, on some models, if you pressand hold the stability control button for morethan five seconds when you apply the brakesand the vehicle is at a stop.
You can switch the traction control systemoff or on independently.
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AA
B
BB
B

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 62).
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 111).
If a fault is present in the system, a warningmessage appears in the information display.See Information Messages (page 117).
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