brake FORD EXPEDITION EL 2017 Service Manual

Using Hill Start Assist
1. Bring your vehicle to a completestandstill. Keep the brake pedalpressed and select an uphill gear (forexample, first (1) when facing uphill orreverse (R) when facing downhill).
2. If the sensors detect that your vehicleis on a slope, the system will activateautomatically.
3. When you remove your foot from thebrake pedal, your vehicle will remainon the slope without rolling away forabout two or three seconds. This holdtime will automatically be extended ifyou are in the process of driving off.
4. Drive off in the normal manner. Thebrakes will release automatically.
Switching the System On and Off
You can switch this feature on or off if yourvehicle is equipped with a manualtransmission and an information display.See General Information (page 91). Thesystem remembers the last setting whenyou start your vehicle.
If your vehicle is not equipped with amanual transmission and an informationdisplay, you cannot turn the system on oroff. When you switch the ignition on, thesystem automatically turns on.
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Brakes

PRINCIPLE OF OPERATION
The traction control system helps avoiddrive wheel spin and loss of traction.
If your vehicle begins to slide, the systemapplies the brakes to individual wheelsand, when needed, reduces engine powerat the same 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 controllight illuminates steadily if thesystem detects a failure. Make sureyou did not manually disable the tractioncontrol system using the switch. If thestability control and traction control lightis still illuminating steadily, have thesystem serviced by an authorized dealerimmediately. Operating your vehicle withtraction control disabled could lead to anincreased risk of loss of vehicle control,vehicle rollover, personal injury and death.
The system automatically turns on eachtime you 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
The switch for the stability and tractioncontrol system is on the instrument panel.
When you switch the system off, amessage and an illuminated icon appearon the instrument cluster.
Use the switch again to return the tractioncontrol system to normal operation.
Your vehicle may have MyKey restrictionsregarding this feature. See Principle ofOperation (page 47).
System Indicator Lights andMessages
The stability and traction controllight temporarily illuminates onengine start-up and flashes:
•When a driving condition activateseither of the systems.
•If a problem occurs in either of thesystems.
The stability and traction controloff light temporarily illuminateson engine start-up and stays on:
•When you switch the traction controlsystem off.
•When you select an alternative stabilitycontrol mode.
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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

Stability Control and Traction Control with RSC Features
Disabled 4DisabledDisabledFlashes thenilluminated
solid 2
Button pressedand held formore than 5seconds atvehicle speedunder 35 mph(56 km/h)
Disabled1Enabled1EnabledIlluminatedVehicle speedexceeds 35 mph(56 km/h) afterbutton ispressed andheld for morethan 5 seconds
EnabledEnabledEnabledNot illuminatedButton pressedagain afterdeactivation
Disabled 4DisabledDisabledIlluminatedButton notpressed and thetransfer case isswitched to
4WD Low3
1The traction control system may still be enabled but with higher entry thresholdscompared to the full system. The electronic stability control entry thresholds are highercompared to the full system.2When you press and hold the button for more than 5 seconds the indicator lamp blinksfor three seconds.3Your vehicle may or may not have this feature available. When you select 4WD low thestability control light illuminates and all stability control with RSC features are disabled.4Engine traction control and two-wheel spin brake traction control functions are disabled.Single wheel spin traction control is always enabled.
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Stability Control

USING HILL DESCENT
CONTROL
Principle of Operation
WARNINGS
Hill descent control cannot controldescent in all surface conditions andcircumstances, such as ice orextremely steep grades. Hill descentcontrol is a driver assist system and cannotsubstitute for good judgment by the driver.Failure to do so may result in loss of vehiclecontrol, crash or serious injury.
Hill descent control does not providehill hold at 0 mph (0 km/h). Whenstopped, the parking brake must beapplied or the vehicle must be placed inpark (P) or it may roll away.
Hill descent control allows the driver to setand maintain vehicle speed whiledescending steep grades in various surfaceconditions.
Hill descent control can maintain vehiclespeeds on downhill grades between 3 mph(5 km/h) and 20 mph (32 km/h). Above20 mph (32 km/h), the system remainsarmed, but descent speed cannot be setor maintained.
Hill descent control requires a coolingdown interval after sustained use. Theamount of time that the feature canremain active before cooling varies withconditions. The system provides a warningin the message center and a chime soundswhen the system is about to disengage forcooling. At this time, manually apply thebrakes to maintain descent speed.
Using Hill Descent Control
Press and release the hilldescent button in the center ofthe terrain management control.The button illuminates and a chime soundswhen you switch this feature on.
To increase descent speed, press theaccelerator pedal until you reach thedesired speed. To decrease descentspeed, press the brake pedal until youreach the desired speed.
Whether accelerating or decelerating, onceyou reach the desired descent speed,remove your feet from the pedals and hilldescent control maintains the chosenvehicle speed.
Note:You may observe noise from the ABSpump motor during hill descent controloperation. This is a normal characteristic ofthe ABS and should be no reason forconcern.
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Terrain Response (If Equipped)

PRINCIPLE OF OPERATION
WARNINGS
To help avoid personal injury, pleaseread and understand the limitationsof the system as contained in thissection. Sensing is only an aid for some(generally large and fixed) objects whenmoving on a flat surface at parking speeds.Certain objects with surfaces that absorbultrasonic waves, surrounding vehicle'sparking aid systems, traffic controlsystems, fluorescent lamps, inclementweather, air brakes, and external motorsand fans may also affect the function ofthe sensing system; this may includereduced performance or a false activation.
To help avoid personal injury, alwaysuse caution when in reverse (R) andwhen using the sensing system.
This system is not designed toprevent contact with small or movingobjects. The system is designed toprovide a warning to assist the driver indetecting large stationary objects to avoiddamaging your vehicle. The system maynot detect smaller objects, particularlythose close to the ground.
Certain add-on devices such as largetrailer hitches, bike or surfboard racksand any device that may block thenormal detection zone of the system, maycreate false beeps.
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 withsharp objects.
Note:If your vehicle sustains damage tothe bumper or fascia, leaving it misalignedor bent, the sensing zone may be alteredcausing inaccurate measurement ofobstacles or false alarms.
Note:The sensing system cannot be turnedoff when a MyKey is present. See Principleof Operation (page 47).
Note:If you attach certain add-on devicessuch as a trailer or bike rack, the rear sensingsystem may detect that add-on device andtherefore provide warnings. It is suggestedthat you disable the rear sensing systemwhen you attach an add-on device to yourvehicle to prevent these warnings.
The sensing system warns the driver ofobstacles within a certain range of yourvehicle. The system turns on automaticallywhenever you switch the ignition on.
You can turn the system on oroff by pressing the parking aidbutton. If your vehicle does nothave a parking aid button, the system canbe switched off through the informationdisplay menu or from the pop-up messagethat appears once you shift thetransmission into reverse (R). See GeneralInformation (page 91).
If a fault is present in the system, a warningmessage appears in the informationdisplay. See Information Messages(page 102).
REAR PARKING AID (If Equipped)
The rear sensors are only active when thetransmission is in reverse (R). As yourvehicle moves closer to the obstacle, therate of the audible warning increases.When the obstacle is less than 12 in(30 cm) away, the warning soundscontinuously. If the system detects astationary or receding object farther than12 in (30 cm) from the corners of thebumper, the tone sounds for only threeseconds. Once the system detects anobject approaching, the warning soundsagain.
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PRINCIPLE OF OPERATION
Cruise control lets you maintain a setspeed without keeping your foot on theaccelerator pedal. You can use cruisecontrol when your vehicle speed is greaterthan 20 mph (30 km/h).
USING CRUISE CONTROL
WARNINGS
Do not use cruise control on windingroads, in heavy traffic or when theroad surface is slippery. This couldresult in loss of vehicle control, seriousinjury or death.
When you are going downhill, yourvehicle speed may increase abovethe set speed. The system will notapply the brakes but a warning displays.Failure to follow this warning could resultin serious personal injury or death.
Note:Cruise control will disengage if thevehicle speed decreases more than 10 mph(16 km/h) below the set speed while drivinguphill.
The cruise controls are on the steeringwheel.
Switching Cruise Control On andOff
Switching Cruise Control On
Press and release ON.
The indicator appears in theinstrument cluster.
Setting the Cruise Speed
1. Drive to desired speed.
2. Press and release SET+.
3. Take your foot off the acceleratorpedal.
The indicator changes color in theinstrument cluster.
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Changing the Set Speed
Note: If you accelerate by pressing theaccelerator pedal, the set speed will notchange. When you release the acceleratorpedal, your vehicle returns to the speed thatyou previously set.
•Press and release SET+ or SET-. Whenyou select km/h as the displaymeasurement in the Informationdisplay the set speed changes inapproximately 2 km/h increments.When you select mph as the displaymeasurement in the informationdisplay the set speed changes inapproximately 1 mph increments.
•Press the accelerator or brake pedaluntil you reach the desired speed. Pressand release SET +.
•Press and hold SET+ or SET-. Releasethe control when you reach the desiredspeed.
Canceling the Set Speed
Press and release CNCL or tap the brakepedal. The set speed does not erase.
Resuming the Set Speed
Press and release RSM.
Switching Cruise Control Off
Press and release OFF when the systemis in stand by mode or switch the ignitionoff.
Note:You erase the set speed when youswitch the system off.
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Cruise 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

Safety Compliance Certification LabelExample:
WARNING
Exceeding the SafetyCompliance Certificationlabel vehicle weight rating limitscould result in substandardvehicle handling or performance,engine, transmission and/orstructural damage, seriousdamage to the vehicle, loss ofcontrol and personal injury.
Maximum Loaded TrailerWeight
Maximum loaded trailer weight isthe highest possible weight of afully loaded trailer the vehicle cantow. Consult an authorized dealer(or the RV and Trailer TowingGuide available at an authorizeddealer) for more detailedinformation.
GCWR (Gross CombinedWeight Rating)
GCWR is the maximum allowableweight of the vehicle and theloaded trailer, including all cargoand passengers, that the vehiclecan handle without riskingdamage. (Important: The towing
vehicle’s braking system is ratedfor operation at Gross VehicleWeight Rating, not at GrossCombined Weight Rating.)Separate functional brakes shouldbe used for safe control of towedvehicles and for trailers where theGross Combined Weight of thetowing vehicle plus the trailerexceed the Gross Vehicle WeightRating of the towing vehicle.
The gross combined weight mustnever exceed the Gross CombinedWeight Rating.
Note: For trailer towinginformation refer to the RV andTrailer Towing Guide available atan authorized dealer.
WARNINGS
Do not exceed the GVWR orthe GAWR specified on theSafety Compliance Certificationlabel.
Do not use replacement tireswith lower load carryingcapacities than the original tiresbecause they may lower yourvehicle’s GVWR and GAWRlimitations. Replacement tireswith a higher limit than the originaltires do not increase the GVWRand GAWR limitations.
Exceeding any vehicle weightrating limitation could resultin serious damage to your vehicle,personal injury or both.
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