power steering FORD EXPEDITION EL 2017 User Guide

The transfer case supples power to all fourwheels. On four-wheel drive vehicles, thetransfer case allows you to select different4WD modes when necessary. You can findinformation on transfer case operation andshifting procedures in this chapter. You canfind information on transfer casemaintenance in the Maintenance chapter.You should become thoroughly familiarwith this information before you operateyour vehicle.
Four-wheel drive (when you select a 4WDmode) uses all four wheels to power yourvehicle. This increases traction, enablingyou to drive over terrain and roadconditions that a conventional two-wheeldrive vehicle cannot.
Basic Operating Principles
•Do not use 4H or 4L on dry, hardsurfaced roads. Doing so will produceexcessive noise, increase tire wear andmay damage drive components. 4H or4L modes are only intended forconsistently slippery or loose surfaces.
•Drive slower in strong crosswinds whichcan affect the normal steeringcharacteristics of your vehicle.
•When driving your vehicle on surfacesmade slippery by loose sand, water,gravel, snow or ice proceed with care.
If Your Vehicle leaves the Road
If your vehicle leaves the road, reduce yourvehicle speed and avoid severe braking.When your vehicle speed decreases, easeyour vehicle back onto the road. Do notturn the steering wheel sharply whilereturning your vehicle to the road.
It may be safer to stay on the shoulder ofthe road and slow down gradually beforereturning to the road. You may lose controlif you do not slow down or if you turn thesteering wheel too sharply or abruptly.
It may be less risky to strike small objects,such as freeway reflectors, with minordamage to your vehicle rather thanattempt a sudden return to the road whichcould cause your vehicle to slide sidewaysout of control or roll over. Remember, yoursafety and the safety of others should beyour primary concern.
If your vehicle gets stuck
WARNING
Do not spin the wheels at over 35mph (56 km/h). The tires may failand injure a passenger or bystander.
Note:Do not rock your vehicle if the engineis not at normal operating temperature,damage to the transmission may occur.
Note:Do not rock your vehicle for morethan a minute, 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.
Emergency Maneuvers
In an unavoidable emergency situationwhere a sudden sharp turn must be made,remember to avoid over-driving yourvehicle (i.e. turn the steering wheel only asrapidly and as far as required to avoid theemergency). Excessive steering can resultin loss of vehicle control. Apply smoothpressure to the accelerator pedal or brakepedal when changes in vehicle speed arerequired. Avoid abrupt steering,acceleration and braking. This could resultin an increased risk of vehicle roll over, lossof vehicle control and personal injury. Useall available road surface to bring yourvehicle to a safe direction of travel.
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Four-Wheel Drive (If Equipped)

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 downa hill or steep incline, you should alwaystry to drive straight up or straight down.
When climbing a steep slope or hill, startin a lower gear rather than downshifting toa lower 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 turnaround because this could cause vehicleroll over. It is better to reverse back to asafe location.
Apply just enough power to the wheels toclimb the hill. Too much power will causethe tires to slip, spin or lose traction,resulting in loss of vehicle control.
Descend a hill in the same gear you woulduse to climb up the hill to avoid excessivebrake application and brake overheating.Do not descend in neutral. Disengageoverdrive or move the transmissionselector lever to a lower gear. Whendescending a steep hill, avoid sudden hardbraking as you could lose control. The frontwheels have to be turning in order to steeryour vehicle.
If your vehicle has anti-lock brakes, applythe brakes steadily. Do not pump thebrakes.
Driving on Snow and Ice
WARNING
If you are driving in slipperyconditions that require tire chains orcables, 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 end ofyour vehicle slides while cornering, steer inthe direction of the slide until you regaincontrol of your vehicle.
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 while 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 andice. Apply the accelerator slowly andsteadily when starting from a full stop.
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Four-Wheel Drive (If Equipped)E143949

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 and anauthorized dealer should check them. If thevehicle has continuous vibration or shudderin the steering wheel while braking, anauthorized dealer should check your vehicle.
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 AlloyWheels (page 270).
See Warning Lamps andIndicators (page 87).
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 pedalbecomes stuck or entrapped, apply steadyand firm pressure to the brake pedal toslow the vehicle and reduce engine power.If you experience this condition, apply thebrakes and bring your vehicle to a safestop. Switch the engine off, move thetransmission to park (P) and apply theparking brake. Inspect the acceleratorpedal and the area around it for any itemsor debris that may be obstructing itsmovement. If none are found and thecondition persists, have your vehicle towedto the nearest authorized dealer.
Emergency Brake Assist
Emergency brake assist detects when youbrake heavily by measuring the rate atwhich you press the brake pedal. Itprovides maximum braking efficiency aslong as you press the pedal. Emergencybrake assist can reduce stopping distancesin critical situations.
Anti-lock Brake System
This system helps you maintain steeringcontrol during emergency stops by keepingthe brakes from locking.
This lamp momentarilyilluminates when you switch theignition on. If the light does notilluminate during start up, remains on orflashes, the anti-lock braking system maybe disabled. Have the system checked byan authorized dealer. If the anti-lock brakesystem is disabled, normal braking is stilleffective.
If the brake warning lampilluminates with the parkingbrake released, have your brakesystem serviced immediately.
HINTS ON DRIVING WITH
ANTI-LOCK BRAKES
Note:When the system is operating, thebrake pedal may pulse and may travelfurther. Maintain pressure on the brakepedal. You may also hear a noise from thesystem. This is normal.
The anti-lock braking system will 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.
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BrakesE138644 E138644

PRINCIPLE OF OPERATION
WARNINGS
Vehicle modifications involvingbraking system, aftermarket roofracks, suspension, steering system,tire construction and wheel and tire sizemay change the handling characteristicsof your vehicle and may adversely affectthe performance 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.
Remember that even advancedtechnology cannot defy the laws ofphysics. 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 the road;this could reduce the operator’s ability tocontrol the vehicle potentially resulting ina loss of vehicle control, vehicle rollover,personal injury and death. If your electronicstability control system activates, SLOWDOWN.
The system automatically turns on eachtime you switch the ignition on.
If a fault occurs in either the stabilitycontrol or the traction control system, youmay experience the following conditions:
•The stability and traction control lightilluminates steadily.
•The stability control and tractioncontrol systems do not enhance yourvehicle's ability to maintain traction ofthe wheels.
If a driving condition activates either thestability control or the traction controlsystem you may experience the followingconditions:
•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 andyour foot is not on the brake, the brakepedal may move as the system applieshigher brake force.
The stability control system has severalfeatures built into it to help you maintaincontrol of your vehicle:
Electronic Stability Control
The system enhances your vehicle’s abilityto prevent skids or lateral slides byapplying brakes to one or more of thewheels individually and, if necessary,reducing engine power.
Roll Stability Control
The system enhances your vehicle’s abilityto prevent rollovers by detecting yourvehicle’s roll motion and the rate at whichit changes by applying the brakes to oneor more wheels individually.
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Stability Control

Switching the System Off and On
One or both systems can be switched offtemporarily by using the informationdisplay control; See InformationDisplays (page 91). . When you switch offthe Blind Spot Information System, youwill not receive alerts and the informationdisplay will display a system off message.The yellow alert indicator in the outsidemirror will also flash twice. The systemswitches back on whenever you switch theignition on.
You can also have the Blind SpotInformation System switched offpermanently at an authorized dealer. Onceswitched off permanently, the system canonly be switched back on at an authorizeddealer.
STEERING
Electric Power Steering
WARNINGS
The electric power steering systemhas diagnostic checks thatcontinuously monitor the system. Ifa fault is detected, a message displays inthe information display. Stop your vehicleas soon as it is safe to do so. Switch theignition off. After at least 10 seconds,switch the ignition on and watch theinformation display for a steering systemwarning message. If a steering systemwarning message returns, have the systemchecked by an authorized dealer.
If the system detects an error, youmay not feel a difference in thesteering, however a serious conditionmay exist. Obtain immediate service froman authorized dealer, failure to do so mayresult in loss of steering control.
Your vehicle has an electric power steeringsystem. There is no fluid reservoir. Nomaintenance is required.
If your vehicle loses electrical power whileyou are driving, electric power steeringassistance is lost. The steering system stilloperates and you can steer your vehiclemanually. Manually steering your vehiclerequires more effort.
Extreme continuous steering may increasethe effort required for you to steer yourvehicle. This increased effort preventsoverheating and permanent damage tothe steering system. You do not lose theability to steer your vehicle manually.Typical steering and driving maneuversallow the system to cool and return tonormal operation.
Steering Tips
If the steering wanders or pulls, check for:
•Correct tire pressures.
•Uneven tire wear.
•Loose or worn suspensioncomponents.
•Loose or worn steering components.
•Improper vehicle alignment.
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 withthe brake system to help operateadvanced stability control and accidentavoidance systems. Additionally, wheneverthe battery is disconnected or a newbattery installed, you must drive yourvehicle a short distance before the systemrelearns the strategy and reactivates allsystems.
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Driving Aids

DRIVE CONTROL
Driver Select Suspension (If Equipped)
Driver select suspension delivers a uniquedriving experience through a suite ofsophisticated electronic vehicle systems.These systems continuously monitor yourdriving inputs and the road conditions tooptimize ride comfort, steering andhandling.
Driver select suspension consists of thefollowing systems:
•Continuously controlled dampingdynamically adjusts the shockabsorbers stiffness in real time tomatch the road surface and driverinputs. This system continuouslymonitors your vehicle’s motion (roll,pitch, bounce), suspension position,load, speed, road conditions, andsteering to adjust the suspensiondamping for optimal vehicle control.
•Electronically power-assisted steeringadjusts steering effort and feel basedon your vehicle speed and your inputs.
The configuration remains active untilmodified from the main menu on theinformation display. See GeneralInformation (page 91).
Modes:
•Comfort – Provides a more relaxeddriving experience, maximizing comfort.Your steering effort decreases and thesuspension movement is more fluid.Comfort mode is ideal when you desireenhanced traveling comfort.
•Normal – Delivers a balancedcombination of comfortable, controlledride and confident handling. This modeprovides an engaging drive experienceand a direct connection to the roadwithout sacrificing any of thecomposure demanded from yourvehicle.
•Sport – Provides a sportier drivingexperience. The suspension stiffens,with an emphasis on handling andcontrol. The engine responds moredirectly to your inputs. Sport mode isideal for use during more spiriteddriving.
SELF-LEVELING SUSPENSION
The self-leveling suspension system isdesigned to improve ride, handling andgeneral vehicle performance during:
•Certain road conditions
•Steering maneuvers
•Braking
•Acceleration
•Towing
This system keeps the rear of your vehicleat a constant level through a hydraulicpump inside each rear shock. Dependingon the payload or road surface conditionsit will take approximately 2 mi (3.2 km) forthe leveling to complete.
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Driving Aids

Before using recovery hooks:
•Make sure all attaching points aresecure and capable of withstandingthe applied load.
•Never use chains, cables or tow strapswith metal hook ends.
•Only use recovery straps that have aminimum breaking strength two tothree times the gross vehicle weight ofthe stuck vehicle.
•Make sure the recovery strap is in goodcondition and free of visible cuts, tearsor damage.
•Use a damper device such as a tarp,heavy blanket or piece of carpetdraped over the recovery strap to helpabsorb the energy in the event thestrap breaks.
•Make sure the stuck vehicle is notloaded heavier than its gross vehicleweight rating specified on thecertification label.
•Always align the tow vehicle and stuckvehicle in a straight line (within 10degrees).
•Keep bystanders to the sides of thevehicle, at a distance of at least twicethe length of the recovery strap. Thishelps avoid injury from the hazard of arecovery hook or strap breaking, or avehicle lurching into their path.
TOWING THE VEHICLE ON
FOUR WHEELS
WARNING
If your vehicle has a steering wheellock make sure the ignition is in theaccessory or on position when beingtowed.
Emergency Towing
If your vehicle becomes inoperable(without access to wheel dollies,car-hauling trailer, or flatbed transportvehicle), it can be flat-towed (all wheelson the ground, regardless of the powertrainand transmission configuration) under thefollowing conditions:
•Your vehicle is facing forward fortowing in a forward direction.
•Place the transmission in position N. Ifyou cannot move the transmission intoN, you may need to override it. SeeTransmission (page 159).
•Maximum speed is 35 mph (56 km/h).
•Maximum distance is 50 mi (80 km).
Recreational Towing
Note:Put your climate control system inrecirculated air mode to prevent exhaustfumes from entering your vehicle. SeeClimate Control (page 112).
Follow these guidelines if you have a needfor recreational towing, for example towingyour vehicle behind a motorhome. Theseguidelines prevent damage to yourtransmission.
Two Wheel Drive Vehicles
You cannot tow a two wheel drive vehiclewith any wheels on the ground as vehicleor transmission damage may occur. Youmust tow your vehicle with all four wheelsoff the ground, for example when using acar-hauling trailer.
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Towing

•Avoid using speed control in hillyterrain.
•Do not rest your foot on the brakepedal while driving.
•Avoid carrying unnecessary weight.
•Avoid adding particular accessories toyour vehicle (e.g. bug deflectors,rollbars/light bars, running boards, skiracks).
•Avoid driving with the wheels out ofalignment.
DRIVING THROUGH WATER
WARNING
Do not drive through flowing or deepwater as you may lose control of yourvehicle.
Note:Driving through standing water cancause vehicle damage.
Note:Engine damage can occur if waterenters the air filter.
Before driving through standing water,check the depth. Never drive through waterthat is higher than the bottom of the wheelhubs.
When driving through standing water, drivevery slowly and do not stop your vehicle.Your brake performance and traction maybe limited. After driving through water andas soon as it is safe to do so:
•Lightly press the brake pedal to dry thebrakes and to check that they work.
•Check that the horn works.
•Check that the exterior lights work.
•Turn the steering wheel to check thatthe steering power assist works.
FLOOR MATS (If Equipped)
WARNINGS
Always use floor mats that aredesigned to fit the foot well of yourvehicle. Only use floor mats thatleave the pedal area unobstructed. Onlyuse floor mats that are firmly secured toretention posts so that they cannot slip outof position and interfere with the pedalsor impair safe operation of your vehicle inother ways.
Pedals that cannot move freely cancause loss of vehicle control andincrease the risk of serious personalinjury.
Always make sure that the floormats are properly attached to theretention posts in the carpet that aresupplied with your vehicle. Floor mats mustbe properly secured to both retention poststo make sure mats do not shift out ofposition.
Never place floor mats or any othercovering in the vehicle foot well thatcannot be properly secured toprevent them from moving and interferingwith the pedals or the ability to control thevehicle.
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Driving HintsE176913

Protected componentsFuse amp ratingFuse or relay number
Blower motor relay.40A*32
110-volt AC power point.40A*33
Auxiliary blower motor.30A*34
Powertrain control module relay.50A*35
Power liftgate.30A*36
Not used.—37
Not used.—38
Trailer tow backup lamps relay.Relay39
Electronic fan 2 relay.Relay40
Powertrain control module keep-alivepower.10A**41
Run/start relay.5A**42
Brake on/off switch.10A**43
Fuel pump relay.20A**44
Not used (spare).10A**45
Front/rear washer pump.15A**46
Rear wiper motor.30A*47
Trailer tow module.40A*48
Not used.—49
Front wiper motor relay.30A*50
Rear window defroster and heated mirrorrelay.40A*51
Anti-lock brake system run/start feed.10A**52
Powertrain control module ISP.5A**53
Power steering.5A**54
Not used.—55
Passenger compartment fuse panel run/start feed.30A**56
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Fuses

Protected componentsFuse amp ratingFuse or relay number
SYNC.10A9Power lift gate.Electric finish panel.Display.
Run accessory relay.10A10
Passive entry/start module.10A11
Interior lighting.15A12Puddle lamps.
Right turn and stop/turn signals.15A13
Left turn and stop/turn signals.15A14
Reverse lamp.15A15Center high mount stop lamp.EC mirror.
Right front low beam.10A16
Left front low beam.10A17
Brake shift interlock/start button LED/keypad illumination.10A18
Third row power folding seat.Passive entry touch start.
Not used.—19
Lock/unlock relays.20A20
Not used.—21
Horn.20A22
Steering wheel control module.15A23Cluster.
Adjustable pedals/power adjustablecolumn.15A24
Datalink.
Liftgate release decklid.15A25Liftglass release motor.
Push to start switch.5A26
Passive entry/start module.20A27
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Fuses