traction control LINCOLN NAVIGATOR 2019 User Guide

If your vehicle goes from one type of surfaceto another (i.e. from concrete to gravel) theremay be a change in the way your vehicleresponds to a maneuver (i.e. steering,acceleration or braking).
Sand
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 excessive wheel slip.
Avoid driving at excessive speeds, thiscauses vehicle momentum to work againstyou and your vehicle could become stuck tothe point that assistance may be requiredfrom another vehicle. Remember, you maybe able to back out the way you came if youproceed with caution.
Mud and Water
Note:Driving through deep water maydamage the vehicle.
If you must drive through high water, driveslowly. Traction or brake capability may belimited.
When driving through water, determine thedepth and avoid water higher than thebottom of the hubs. If the ignition systemgets wet, your vehicle may stall.
Once through water, always try the brakes.Wet brakes do not stop your vehicle aseffectively as dry brakes. Drying can beimproved by applying light pressure to thebrake pedal when moving slowly.
Be cautious of sudden changes in vehiclespeed or direction when you are driving inmud. Even 4X4 vehicles can lose traction inslick mud. As when you are driving oversand, apply the accelerator slowly and avoidspinning your wheels. If the vehicle doesslide, steer in the direction of the slide untilyou regain control of the vehicle.
If the transmission, transfer case or front axleare submerged in water, their fluids shouldbe checked and changed, if necessary.
If the front or rear axle is submerged in water,the axle lubricant should be replaced.
After driving through mud, clean off residuestuck to rotating driveshafts and tires. Excessmud stuck on tires and rotating driveshaftscauses an imbalance that could damagedrive components.
Driving on Hilly or Sloping Terrain
Note:Avoid driving crosswise or turning onsteep slopes or hills.
Note: Avoid turning on steep slopes or hills. A danger lies in losing traction, slippingsideways and possible vehicle roll over. Whenever driving on a hill, determinebeforehand the route you will use. Do notdrive over the crest of a hill without seeingwhat conditions are on the other side. Donot drive in reverse over a hill without theaid of an observer.
Although natural obstacles may make itnecessary to travel diagonally up or down ahill or steep incline, you should always try todrive straight up or straight down.
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Four-Wheel Drive (If Equipped)

When climbing a steep slope or hill, start ina lower gear rather than downshifting to alower gear from a higher gear once theascent has started. This reduces strain onthe engine and the possibility of stalling.
If your vehicle stalls, do not try to turn aroundbecause this could cause vehicle roll over.It is better to reverse back to a safe location.
Apply just enough power to the wheels toclimb the hill. Too much power causes thetires to slip, spin or lose traction, resulting inloss of vehicle control.
Descend a hill in the same gear you woulduse to climb up the hill to avoid excessivebrake application and brake overheating. Donot descend in neutral. Disengage overdriveor move the transmission selector lever to alower gear. When descending a steep hill,avoid sudden hard braking as you could losecontrol. The front wheels have to be turningin order to steer your vehicle.
If your vehicle has anti-lock brakes, apply thebrakes steadily. Do not pump the brakes.
Driving on Snow and Ice
WARNING: If you are driving inslippery conditions that require tire chainsor cables, then it is critical that you drivecautiously. Keep speeds down, allow forlonger stopping distances and avoidaggressive steering to reduce the chancesof a loss of vehicle control which can leadto serious injury or death. If the rear endof your vehicle slides while cornering, steerin the direction of the slide until you regaincontrol of your vehicle.
Note:Excessive tire slippage can causetransmission damage.
Four-wheel drive vehicles have advantagesover two-wheel drive vehicles in snow andice but can skid like any other vehicle.Should you start to slide when driving onsnowy or icy roads, turn the steering wheelin the direction of the slide until you regaincontrol.
Avoid sudden applications of power andquick changes of direction on snow and ice.Apply the accelerator slowly and steadilywhen starting from a full stop.
Avoid sudden braking. Although a four-wheeldrive vehicle may accelerate better than atwo-wheel drive vehicle in snow and ice, itdoes not stop any faster as braking occursat all four wheels. Do not becomeoverconfident in any road condition.
Make sure you allow sufficient distancebetween you and other vehicles for stopping.Drive slower than usual and consider usingone of the lower gears. In emergencystopping situations, apply the brake steadily.Do not pump the brake pedal. See Hints onDriving With Anti-Lock Brakes (page 226).
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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 tractioncontrol light illuminates steadily if thesystem detects a failure. Make sure youdid not manually disable the tractioncontrol system using the informationdisplay controls or the switch. If the stabilitycontrol and traction control light is still
illuminating steadily, have the systemserviced by an authorized dealerimmediately. Operating your vehicle withthe traction control disabled could lead toan increased 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 On and Off
You can switch traction control on and offthrough the information display controls. SeeGeneral Information (page 120).
When you switch the system off, a messageand an illuminated icon appear on theinstrument cluster.
Switch traction control on again to return thesystem to normal operations.
Note:Your vehicle may have MyKeyrestrictions regarding this feature. SeePrinciple of Operation (page 67).
System Indicator Lights and Messages
The stability and traction controllight temporarily illuminates onengine start-up and flashes:
•When a driving condition activates eitherof the systems.
•If a problem occurs in either of thesystems.
The stability and traction controloff light temporarily illuminates onengine start-up and stays on whenyou switch the traction control system off.
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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 stabilitycontrol system. In addition, installing anystereo loudspeakers may interfere withand adversely affect the electronic stabilitycontrol system. Install any aftermarketstereo loudspeaker as far as possible fromthe front center console, the tunnel, andthe front seats in order to minimize the riskof interfering with the electronic stabilitycontrol sensors. Reducing theeffectiveness of the electronic stabilitycontrol system could lead to an increasedrisk of loss of vehicle control, vehiclerollover, personal injury and death.
WARNING: Remember that evenadvanced technology cannot defy the lawsof physics. It’s always possible to losecontrol of a vehicle due to inappropriatedriver input for the conditions. Aggressivedriving on any road condition can causeyou to lose control of your vehicleincreasing the risk of personal injury orproperty damage. Activation of theelectronic stability control system is anindication that at least some of the tireshave exceeded their ability to grip theroad; this could reduce the operator’sability to control the vehicle potentiallyresulting in a loss of vehicle control, vehiclerollover, personal injury and death. If yourelectronic stability control 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.
Roll Stability Control
The system enhances your vehicle’s abilityto prevent rollovers by detecting yourvehicle’s roll motion and the rate at which itchanges by applying the brakes to one ormore wheels individually.
Traction Control
The system enhances your vehicle’s abilityto maintain traction of the wheels bydetecting and controlling wheel spin. SeeUsing Traction Control (page 231).Vehicle without stability controlskidding off its intended route.A
Vehicle with stability controlmaintaining control on a slipperysurface.
B
USING STABILITY CONTROL
Stability Control and Traction Controlwith Roll Stability Control™ (RSC™)
The system automatically activates when youstart your engine. When the transmission isin reverse (R), they are disabled. You canswitch off the traction control portion of thesystem independently. See Using TractionControl (page 231).
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AA
B
BB
B

Stability Control and Traction Control with RSC Features
Traction control systemElectronic stability controlRoll stability controlStability control OFF lightButton functions
EnabledEnabledEnabledIlluminated during bulbcheckDefault at start-up
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Stability Control

When you shift to reverse (R), the sidesensing system provides audible warningswhen your vehicle is moving and obstaclesare detected within 24 in (60 cm) and areinside the driving path of your vehicle. Whenyou stop your vehicle the audible warningstops after two seconds.
Note:Visual distance indication remains onwhen the transmission is in reverse (R).
When you shift to drive (D) or any otherforward gear, for example, low (L), sport (S)or any forward gear in manual transmission,the side sensing system provides audibleand visual distance warnings when yourvehicle is moving below a speed of 5 mph(8 km/h) and obstacles are detected within24 in (60 cm) and are inside the driving pathof your vehicle. Once your vehicle reachesa standstill condition, the audible warningstops after two seconds and visual indicationstops after four seconds.
If the transmission is in neutral (N), the sidesensing system provides visual distanceindication only when your vehicle is movingbelow a speed of 5 mph (8 km/h) and thereis a front or rear parking aid obstacledetected, and the side obstacle is within24 in (60 cm) from the side of your vehicle.When you stop your vehicle the visualdistance indication stops after four seconds.
If the side sensing system is not available,the side distance indicator blocks do notappear.
The side sensing system is not availableunder the following condition:
•If you switch the traction control systemoff.
The side sensing system may not beavailable until you have driven approximatelythe length of your vehicle in order for thesystem to reinitialize if:
•You switch the ignition on, off and backon.
•Your vehicle remains stationary for overtwo minutes.
•The anti-lock brake system is activated.
•The traction control system is activated.
•When the steering wheel angleinformation is not available, the sidesensing system is not available. Thevehicle must be driven at least 492 ft(150 m) above 19 mph (30 km/h) torecover the steering wheel angleinformation.
ACTIVE PARK ASSIST (IF EQUIPPED)
WARNING: You must remain in yourvehicle when the system turns on. At alltimes, you are responsible for controllingyour vehicle, supervising the system andintervening, if required. Failure to take caremay result in the loss of control of yourvehicle, serious personal injury or death.
WARNING: The sensors may notdetect objects in heavy rain or otherconditions that cause interference.
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Parking Aids

Note:If you drive your vehicle less than 2 ft(0.5 m) or greater than 5 ft (1.5 m) away fromother parked vehicles, the system may notbe able to detect an available parkingspace.
When the system detects a suitable space,a message displays and a tone sounds. Stopyour vehicle and follow the onscreeninstructions. If your vehicle is moving veryslowly, you may have to move forward ashort distance before the system is ready topark.
Note:You must observe that the space thesystem selects remains clear of obstructionsat all times during the maneuver.
Note:The system always offers the lastparking space it detects. For example, if yourvehicle detects multiple spaces when youare driving, it offers the last one.
Note:If the vehicle speed is greater thanapproximately 22 mph (35 km/h), the systemshows a message to instruct you to reducethe vehicle speed.
Automatically Steering into a ParallelParking Space
When you shift into reverse (R), with yourhands off the steering wheel and nothingobstructing its movement, your vehicle steersitself into the space. The system displaysinstructions to move your vehicle backwardand forward in the space.
Note:If the vehicle speed exceedsapproximately 6 mph (9 km/h), you interruptthe maneuver, or the system switches off,you must take full control of your vehicle.
Note:If the system detects an object is veryclose to your vehicle and it may be unsafeto continue the maneuver, it may instruct youto stop your vehicle. The system may notprovide any further instruction. Steeringassistance continues to operate but youmust decide if it is safe to continue themaneuver.
When you believe your vehicle is correctlyparked, or a solid tone sounds and aninformation message appears, bring yourvehicle to a complete stop.
When the Active Park Assist maneuver iscomplete, a tone sounds and an informationmessage appears.
Note:You are responsible for checking howyour vehicle is parked and making anynecessary corrections before leaving yourvehicle.
Deactivating Active Park Assist
You can manually deactivate the system by:
•Pressing the Active Park Assist buttonduring an active maneuver.
•Grabbing the steering wheel during anactive maneuver.
•Driving above 22 mph (35 km/h) for 30seconds when searching for a parkingspace.
•Driving above 31 mph (50 km/h).
•Driving above 6 mph (9 km/h) during anactive maneuver.
•Switching the traction control system off.
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Certain vehicle conditions may alsodeactivate the system, for example:
•The traction control system activates orfails.
•The anti-lock brake system activates orfails.
If the system malfunctions, a messageappears and a tone sounds. Have yourvehicle checked as soon as possible.
Perpendicular Parking
The system detects available perpendicularparking spaces and steers your vehicle intothe space. You control the accelerator,gearshift and brakes. The system visuallyand audibly guides you into a perpendicularparking space.
Press the button twice to searchfor a parking space.
When the vehicle speed is less than 19 mph(30 km/h), the system scans both sides ofyour vehicle for an available parking space.A message and a graphic appear in theinformation display to indicate the system issearching for a parking space. Use thedirection indicator lever to search for aparking space on the driver or passengerside of your vehicle.
Note:The system scans both sides of yourvehicle and offers parking spaces one sideat a time if you do not use the directionindicator.
Note:The system defaults to the passengerside if you do not use the direction indicator.
Drive your vehicle approximately 3 ft (1 m)and perpendicular to the other parkedvehicles when searching for a parking space.
Note:If you drive your vehicle less than 2 ft(0.5 m) or greater than 5 ft (1.5 m) away fromother parked vehicles, the system may notbe able to detect an available parkingspace.
When the system detects a suitable space,a message displays and a tone sounds. Stopyour vehicle and follow the onscreeninstructions. If your vehicle is moving veryslowly, you may have to move forward ashort distance before the system is ready topark.
Note:You must observe that the space thesystem selects remains clear of obstructionsat all times during the maneuver.
Note:The system always offers the lastdetected parking space. For example, if yourvehicle detects multiple spaces when youare driving, it offers the last one.
Note:If the vehicle speed is greater thanapproximately 19 mph (30 km/h), the systemshows a message to instruct you to reducethe vehicle speed.
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Automatically Steering into a PerpendicularParking Space
When you shift into reverse (R), with yourhands off the steering wheel and nothingobstructing its movement, your vehicle steersitself into the space. The system displaysinstructions to move your vehicle backwardand forward in the space.
Note:If the vehicle speed exceedsapproximately 6 mph (9 km/h), you interruptthe maneuver, or the system switches off,you must take full control of your vehicle.
Note:If the system detects an object is veryclose to your vehicle and it may be unsafeto continue the maneuver, it may instruct youto stop your vehicle. The system may notprovide any further instruction. Steeringassistance continues to operate but youmust decide if it is safe to continue themaneuver.
When you believe your vehicle is correctlyparked, or a solid tone sounds and aninformation message appears, bring yourvehicle to a complete stop.
When the active park assist maneuver iscomplete, a tone sounds and a messageappears.
Note:You are responsible for checking howyour vehicle is parked and making anynecessary corrections before leaving yourvehicle.
Deactivating Active Park Assist
You can manually deactivate the system by:
•Pressing the Active Park Assist buttonduring an active maneuver.
•Grabbing the steering wheel during anactive maneuver.
•Driving above 19 mph (30 km/h) for 30seconds when searching for a parkingspace.
•Driving above 31 mph (50 km/h).
•Driving above 6 mph (9 km/h) during anactive maneuver.
•Switching the traction control system off.
Certain vehicle conditions may alsodeactivate the system, for example:
•The traction control system activates orfails.
•The anti-lock brake system activates orfails.
If the system malfunctions, a messageappears and a tone sounds. Have yourvehicle checked as soon as possible.
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