ESP FORD F250 SUPER DUTY 2017 Service Manual

LIMITED SLIP DIFFERENTIAL
This axle provides added traction onslippery surfaces, particularly when onewheel is on a poor traction surface. Undernormal conditions, the limited-slip axlefunctions like a standard rear axle. The axlemay exhibit a slight noise or vibrationduring tight turns with low vehicle speed.This is normal behavior and indicates theaxle is working.
ELECTRONIC LOCKING
DIFFERENTIAL (If Equipped)
Note:The electronic locking differential isfor off-road use only and is not for use ondry pavement. Using the electronic lockingdifferential on dry pavement will result inincreased tire wear, noise and vibration.
The electronic locking differential is adevice housed in the rear axle that allowsboth rear wheels to turn at the samespeed. The electronic locking differentialcan provide additional traction should yourvehicle become stuck. You can activatethe differential electronically and shift iton the fly within the differential operatingspeed range. The differential is for use inmud, rocks, sand, or any off-road conditionwhere you need maximum traction. It isnot for use on dry pavement.
The following conditions will affect theelectronic locking differential:
•The electronic locking differential willnot engage if your vehicle speed isabove 20 mph (32 km/h) in 4x2, 4x4Auto, or 4x4 High modes.
•The electronic locking differential willnot engage if your vehicle speed isabove or 56 mph (90 km/h) in 4X4Low.
•The electronic locking differential maynot engage if you press youraccelerator pedal during anengagement attempt. A message maydisplay in the instrument displayguiding you to release the acceleratorpedal.
•In 4x2, 4x4 Auto, and 4x4 High modes,the electronic locking differential willautomatically disengage at speedsabove 25 mph (41 km/h) and willautomatically reengage at speedsbelow 20 mph (32 km/h).
•In 4L (4X4 low), the electronic lockingdifferential will automaticallydisengage at speeds above 62 mph(100 km/h) and will automaticallyreengage at speeds below 56 mph(90 km/h).
•The AdvanceTrac system has theability to take over control of theelectronic locking differential anddisable it during driving maneuverswhen necessary.
When you switch the system on, if you donot meet the required conditions forelectronic locking differential activation,the instrument cluster will display theappropriate information guiding youthrough the proper activation process.
Activating the Electronic LockingDifferential
Note:Do not use electronic lockingdifferential on dry, hard surfaced roads.Doing so will produce excessive noise,vibration and increase tire wear.
Note:If the electronic locking differentialhas difficulty disengaging, release theaccelerator pedal and turn the steeringwheel in the opposite direction while rolling.
219
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 201710, Second Printing
Rear Axle

2. Release the accelerator pedal tomaximize engine braking.
3. Apply the brakes. The transmissiondownshifts to lower gears.
Note:You can shift the transmission tolower gears with progressive range selection(PRS) or manual shifting independent ofpressing the brakes.
Note:You can also use manual enginebraking with cruise control to improve gradedescent control.
Automatic Engine Braking
1. Press the button twice to switch onautomatic engine braking.
2.Release the accelerator or brake pedal.The system remembers your vehiclespeed.
Note:The system automatically activatesthe engine brake and, if necessary,downshifts the transmission to lower gearsto not exceed your vehicle's set speed whenthe brake or accelerator were last released.
Note:Use this when driving downhill andcarrying heavy loads or trailering.
Warning Lamp Conditions
•Illuminates when this feature isswitched on and the system isoperating properly. See WarningLamps and Indicators (page 105).
•Flashes when the engine brake isdisabled due to a fault or the enginedoes not meet the required brakingconditions.
•Does not illuminate when the switchor indicator is faulty.
You can switch the system on at anytime.The system becomes active once thebraking conditions are met.
Braking Conditions
•Your vehicle is in a forward gear.
•The engine speed is above about 1500RPM.
•Your foot is off the accelerator.
You can use this feature with tow/haul orprogressive range selection to providefurther increased engine braking. Thetransmission automatically upshifts toprevent the engine from entering the redzone on the tachometer. See AutomaticTransmission (page 205).
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.
PARKING BRAKE
WARNING
Always set the parking brake fullyand make sure the transmission isplaced in park (P). Failure to set theparking brake and engage park could resultin vehicle roll-away, property damage orbodily injury. Turn the ignition to the lockposition and remove the key whenever youleave your vehicle.
222
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 201710, Second Printing
Brakes

Apply the parking brake whenever yourvehicle is parked. Press the pedaldownward to set the parking brake. Thebrake warning lamp in the instrumentcluster will illuminate and remainsilluminated until the parking brake isreleased.
To release, pull the brake release leverlocated at the lower left side of theinstrument panel.
If you are parking your vehicle on a gradeor with a trailer, press and hold the brakepedal down, then set the parking brake.There may be a little vehicle movement asthe parking brake sets to hold the vehicle'sweight. This is normal and should be noreason for concern. If needed, press andhold the service brake pedal down, thentry reapplying the parking brake. Chock thewheels if required. If the parking brakecannot hold the weight of the vehicle, theparking brake may need to be serviced orthe vehicle may be overloaded.
HILL START ASSIST
WARNINGS
The system does not replace theparking brake. When you leave yourvehicle, always apply the parkingbrake and shift the transmission into park(P) (automatic transmission) or first gear(1) (manual transmission).
You must remain in your vehicle onceyou have activated the system.
During all times, you are responsiblefor controlling your vehicle,supervising the system andintervening, if required.
If the engine is revved excessively, orif a malfunction is detected, thesystem will be deactivated.
The system makes it easier to pull awaywhen your vehicle is on a slope without theneed to use the parking brake.
When the system is active, your vehicle willremain stationary on the slope for two tothree seconds after you release the brakepedal. This allows you time to move yourfoot from the brake to the acceleratorpedal. The brakes release automaticallywhen the engine has sufficient torque toprevent your vehicle from rolling down thegrade. This is an advantage when pullingaway on a slope, for example from a carpark ramp, traffic lights or when reversinguphill into a parking space.
The system will activate automatically onany slope that will cause significant vehiclerollback. For vehicles with a manualtransmission, you can switch this featureoff using the information display. SeeInformation Displays (page 111). Thesystem will remain on or off depending onhow it was last set.
Note:There is no warning lamp to indicatethe system is either on or off.
Note:If your vehicle is equipped with AutoHold, Hill Start Assist will not be availablewhile Auto Hold is active.
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.
223
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 201710, Second Printing
Brakes

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 zero miles per hour (0kilometers per hour). When stopped,the parking brake must be applied or thevehicle must be placed in P (Park) or itmay 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 2 mph(3 km/h) and 12 mph (20 km/h). Above 20mph (32 km/h), the system remainsarmed, but descent speed cannot be setor maintained.
Hill descent control requires a coolingdown interval after a period of sustaineduse. The amount of time that the featurecan remain active before cooling varieswith conditions. The system will provide awarning in the message center and a chimewill sound when the system is about todisengage for cooling. At this time,manually apply the brakes as needed tomaintain descent speed.
USING HILL DESCENT
CONTROL
Press and release the hilldescent button located on theinstrument panel. A light in thecluster will illuminate and a chime willsound when this feature is activated.
To increase descent speed, press theaccelerator pedal until the desired speedis reached. To decrease descent speed,press the brake pedal until the desiredspeed is reached.
Whether accelerating or decelerating, oncethe desired descent speed is reached,remove your feet from the pedals and thechosen vehicle speed will be maintained.
Note:Noise from the ABS pump motor maybe observed during hill descent controloperation. This is a normal characteristic ofthe ABS and should be no reason forconcern.
Hill descent modes
•At speeds below 20 mph (32 km/h):When the Hill Descent Control switchis pressed and Hill Descent Control isactive, the Hill Descent Control telltalewill flash.
•At speeds below 20 mph (32 km/h):When the Hill Descent Control switchis pressed and conditions are notcorrect for hill descent activation, theHill Descent Control system will beenabled, the Hill Descent Controltelltale will be solid and a message willdisplay in the information display.
•At speeds above 20 mph (32 km/h):When the Hill Descent Control switchis pressed, the Hill Descent Controlsystem will be enabled, the telltale inthe cluster will not be illuminated anda message will be displayed in theinformation display.
229
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 201710, Second Printing
Terrain Control (If Equipped)E163957

•Press SET+ or SET- to change the setspeed in small increments.
•Press the accelerator or brake pedaluntil you reach the desired speed. PressSET+ or SET-.
•Press and hold SET+ or SET-. Releasethe control when you reach the desiredspeed.
Canceling the Set Speed
Press CNCL or tap the brake pedal. Theset speed does not erase.
Resuming the Set Speed
Press RES.
Switching Cruise Control Off
Note:You erase the set speed when youswitch the system off.
Press OFF when the system is in standbymode or switch the ignition off.
USING ADAPTIVE CRUISE
CONTROL (If Equipped)
WARNINGS
Always pay close attention tochanging road conditions when usingadaptive cruise control. The systemdoes not replace attentive driving. Failingto pay attention to the road may result ina crash, serious injury or death.
Adaptive cruise control is not a crashwarning or avoidance system.
Adaptive cruise control does notdetect stationary or slow movingvehicles below 6 mph (10 km/h).
Adaptive cruise control does notdetect pedestrians or objects in theroad.
WARNINGS
Adaptive cruise control does notdetect oncoming vehicles in thesame lane.
Do not use adaptive cruise controlon winding roads, in heavy traffic orwhen the road surface is slippery.This could result in loss of vehicle control,serious injury or death.
Do not use adaptive cruise controlwith a snow plow blade installed.
Do not use adaptive cruise controlwhen towing a trailer that has trailerbrakes. The auto-brake componentof the adaptive cruise control system doesnot operate the trailer brakes. Usingadaptive cruise control when towing atrailer that has trailer brakes may result inthe loss of vehicle control, which couldresult in serious injury.
Do not use tire sizes other than thoserecommended because this canaffect the normal operation of thesystem. Failure to do so may result in a lossof vehicle control, which could result inserious injury.
Note:It is your responsibility to stay alert,drive safely and control the vehicle at alltimes.
The system adjusts your speed to maintaina proper distance between you and thevehicle in front of you in the same lane. Youcan select from one of four gap settings.
240
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 201710, Second Printing
Cruise Control (If Equipped)

When a vehicle ahead of you enters thesame lane or a slower vehicle is ahead inthe same lane, the vehicle speed adjuststo maintain a preset gap distance. Thedistance setting is adjustable.
The lead vehicle graphic illuminates.
The vehicle maintains a constant distancefrom the vehicle ahead until:
•The vehicle in front of you acceleratesto a speed above the set speed.
•The vehicle in front of you moves outof your lane or out of view.
•The vehicle speed falls below 12 mph(20 km/h).
•You set a new gap distance.
The system applies the brakes to slow thevehicle to maintain a safe distance fromthe vehicle in front. The system appliesonly limited maximum braking. Press thebrake pedal to override the system.
If the system predicts that its maximumbraking level is insufficient, an audiblewarning sounds while the systemcontinues to brake. A red warning barappears on the windshield heads-updisplay. Take immediate action to slow orstop the vehicle.
The system may provide slight temporaryacceleration when you use your driver sidedirectional indicator while following a leadvehicle, to aid in passing the vehicle.
Setting the Gap Distance
Note:It is your responsibility to select a gapappropriate to the driving conditions.
Gap decrease.A
Gap increase.B
Press the gap control to decrease orincrease the distance between your vehicleand the vehicle in front of you.
Bars in the graphic show the selected gapdistance. You can select between four gapsettings.
Note:When you select Tow/Haul Mode,the gap distance is increased slightly.
242
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 201710, Second Printing
Cruise Control (If Equipped)E183739 E233874

Low Speed AutomaticCancellation
The system does not function at vehiclespeeds below 12.4 mph (20 km/h). Anaudible alarm sounds and the automaticbraking releases if the vehicle drops belowthis speed.
Hilly Condition and Trailer TowUsage
Note:An audible alarm sounds and thesystem shuts down if it applies brakes foran extended period of time. This allows thebrakes to cool. The system functionsnormally again when the brakes havecooled.
Note:When towing with adaptive cruisecontrol, turn on Tow/Haul Mode and DieselEngine Brake.
Select a lower gear when the system isactive in situations such as prolongeddownhill driving on steep grades, forexample in mountainous areas. Thesystem needs additional engine braking inthese situations to reduce the load on thevehicle’s regular brake system to preventit from overheating.
Switching the System Off
Note:The set speed memory erases whenyou switch off the system.
Press and release OFF or switch off theignition.
Detection Issues
WARNING
On rare occasions, detection issuescan occur due to the roadinfrastructures, for example bridges,tunnels and safety barriers. In these cases,the system may brake late orunexpectedly. At all times, you areresponsible for controlling your vehicle,supervising the system and intervening, ifrequired.
The radar sensor has a limited field ofvision. It may not detect vehicles at all ordetect a vehicle later than expected insome situations. The lead vehicle graphicdoes not illuminate if the system does notdetect a vehicle in front of you.
244
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 201710, Second Printing
Cruise Control (If Equipped)E71621

ActionCause
Clean the grille surface in front of the radaror remove the object causing the obstruc-tion.
The surface of the radar in the grille is dirtyor obstructed in some way.
Wait a short time. It may take severalminutes for the radar to detect that it is freefrom obstruction.
The surface of the radar in the grille is cleanbut the message remains in the display.
Do not use the system in these conditionsbecause it may not detect any vehiclesahead.
Heavy rain or snow is interfering with theradar signals.
Do not use the system in these conditionsbecause it may not detect any vehiclesahead.
Swirling water, or snow or ice on the surfaceof the road may interfere with the radarsignals.
Wait a short time or switch to normal cruisecontrol.You are in a desert or remote area with noother vehicles and no roadside objects.
Due to the nature of radar technology, it ispossible to get a blockage warning and nothave a blockage. This can happen, forexample, when driving in sparse rural ordesert environments. A false blockedcondition either self clears or clears aftera key cycle.
Switching to Normal CruiseControl
WARNING
Normal cruise control will not brakewhen your vehicle is approachingslower vehicles. Always be aware ofwhich mode you have selected and applythe brakes when necessary.
You can manually change from adaptivecruise control to normal cruise controlthrough the information display. SeeInformation Messages (page 128).
The cruise control indicator lightreplaces the adaptive cruisecontrol indicator light if youselect normal cruise control. The gapsetting does not display, the system doesnot automatically respond to lead vehiclesand automatic braking remains active tomaintain set speed. The system recalls itslast setting when you start your vehicle.
246
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 201710, Second Printing
Cruise Control (If Equipped)E71340

LANE KEEPING SYSTEM (If
Equipped)
WARNING
The system is designed to aid thedriver. It is not intended to replaceyour attention and judgment. You arestill responsible to drive with due care andattention.
Note:The system works as long as thecamera can detect one lane marking at aspeed above 40 mph (64 km/h).
Note:The system may not function if thecamera is blocked or there is damage to thewindshield.
The Lane Keeping System automaticallydetects and tracks the road lane markingsusing a camera mounted behind theinterior review view mirror. The systemnotifies you to stay in your lane when thefront camera detects an unintentional lanechange is likely to occur.
Switching the System On and Off
Note:The system on or off setting is storeduntil it is manually changed, unless a MyKeyis detected. If the system detects a MyKey,it defaults to on and the mode is set to alert.
Note:If a MyKey is detected, pressing thebutton will not affect the on or off status ofthe system. You can only change the modeand intensity settings.
Press the button located on thecenter console to switch thesystem on or off.
System Settings
The system sensitivity and intensity canbe adjusted through the display screen.See General Information (page 111). Thesystem remembers the last selection. Youdo not need to readjust the setting eachtime you turn on your vehicle.
Sensitivity: This setting allows you toselect where in the lane a warning isprovided. Increasing the sensitivity settingmoves the warning zones in closer to yourvehicle.
NormalA
IncreasedB
Note:The alert diagram illustrates generalzone coverage. It does not provide exactzone parameters.
Intensity: This setting affects the intensityof the steering wheel vibration. Increasingthe intensity causes a higher rate of hapticfeedback.
•High
•Normal
•Low
247
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 201710, Second Printing
Driving AidsE173233 E165517

If the power steering system breaks down(or if the engine is turned off), you cansteer the vehicle manually, but it takesmore effort.
If the steering wanders or pulls, check for:
•an improperly inflated tire
•uneven tire wear
•loose or worn suspension components
•loose or worn steering components
•improper vehicle alignment
If any steering components are serviced orreplaced, install new fasteners (many arecoated with thread adhesive or haveprevailing torque features which may notbe re-used). Never re-use a bolt or nut.Torque fasteners to specifications.
A high crown in the road or high crosswindsmay also make the steering seem towander or pull.
Adaptive Steering (If Equipped)
WARNING
The adaptive steering system hasdiagnostic checks that continuouslymonitor the system. If a fault isdetected a message displays in theinformation display. Stop your vehicle assoon as it is safe to do so. This warningmessage may clear if the fault is no longerpresent. If an adaptive steering systemwarning message appears each time youstart your vehicle, have the systemchecked as soon as possible.
The adaptive steering system continuallychanges the steering ratio with changes tovehicle speed, optimizing the steeringresponse in all conditions. The system alsochanges when you switch on thetransmission tow/haul feature. When youselect the tow/haul button, the adaptivesteering system reduces vehicle sensitivityto steering inputs at higher vehicle speeds,while maintaining the ease of parking andmaneuverability at low speeds.
Note:The adaptive steering system isdesigned with a locking device. With thelock engaged, the adaptive steering systemremains mechanically locked at a fixedsteering ratio. You may also notice a clickwhen you switch the vehicle on or after youswitch it off, as the lock disengages orengages.
Note:If your vehicle loses electrical poweror detects a fault when you are driving, thesystem automatically shuts down and youretain normal steering function with a fixedsteering ratio. During this time it is possiblethat the steering wheel may not be straightwhen the vehicle is driving straight ahead.In addition, the driver may notice that thesteering wheel angle required to steer thevehicle may be different.
Note:During parking maneuvers, theadaptive steering system balances the driverwork load for various steering wheel inputsand vehicle loading conditions. Underextreme operating conditions the systemlocking device may engage. This strategyprevents overheating and permanentdamage to the adaptive steering system.Typical steering and driving maneuversallow the system to cool and return tonormal operation.
257
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 201710, Second Printing
Driving Aids