display FORD SUPER DUTY 2023 Workshop Manual

Note:This feature offers smoother, lessaggressive engine braking during downhilldescents. It may not apply braking if thevehicle speed is not increasing, although itapplies full engine braking force whenneeded to prevent acceleration. The systemautomatically activates the engine brakeand, if necessary, downshifts thetransmission to lower gears to not exceedyour vehicle's set speed when the brake oraccelerator were last released.
DIESEL ENGINE EXHAUST
BRAKE INDICATORS
DIESEL ENGINE EXHAUST
BRAKE GAUGE
Displays the diesel engine exhaust brakepower in the form of a percentage. A fullfill or 100% represents the total dieselengine exhaust brake power available.
The gauge displays zero to 100%depending on the engine brake powerprovided by the system.
Note:When the diesel engine exhaust brakeis switched off, the gauge displays zero.
Accessing the Diesel EngineExhaust Brake Gauge
You can access the diesel engine exhaustbrake gauge in the instrument cluster usingthe instrument cluster display control onthe steering wheel:
•Press the menu button.
•Select Gauges.
•Select Diesel Gauges.
DIESEL ENGINE EXHAUST
BRAKE – TROUBLESHOOTING
DIESEL ENGINE EXHAUST BRAKE– WARNING LAMPS
•Illuminates when this feature isswitched on and the system isoperating properly.
•Flashes when the engine brake isdisabled due to a fault.
•Does not illuminate when the switchor indicator is faulty.
You can switch the system on at any time.The braking system becomes active oncethe braking conditions are met.
DIESEL ENGINE EXHAUST
BRAKE VIDEOS
Diesel Engine Exhaust Braking Video Link
257
2023 Super Duty (TFH) Canada/United States of America, enUSA, Edition date: 202211, DOMDiesel Engine Exhaust BrakeE171217 E234452

REVERSE BRAKE ASSIST – TROUBLESHOOTING
REVERSE BRAKE ASSIST – INFORMATION MESSAGES
DescriptionMessage
Displays when the system applies thebrakes and remains on for a few seconds.Reverse Brake Assist
Make sure that all doors, liftgate or tailgateand hood are closed. Drive the vehicle on astraight road for a short period. Make surethe parking aids and cross traffic alertsystems are on. If the message remains on,have the system checked as soon aspossible.
Reverse Brake Assist Not Available SeeManual
Displays when a system error has occurred.Have your vehicle checked as soon aspossible.
Reverse Brake Assist Fault
Displays when reverse brake assist is off.Reverse Brake Assist Off
260
2023 Super Duty (TFH) Canada/United States of America, enUSA, Edition date: 202211, DOMReverse Brake Assist (If Equipped)

Note:If your vehicle sustains damage tothe bumper or fascia leaving it misalignedor bent, it could alter the sensing zonecausing inaccurate measurement ofobstacles or false alerts.
Note:Vehicle loading and suspensionchanges can impact the angle of the sensorsand may change the normal detection zoneof the system resulting in inaccuratemeasurement of obstacles or false alerts.
Note:When you connect a trailer, thesystem may detect the trailer and providean alert, or the system turns off. If thesystem does not turn off, switch the systemoff manually after you connect the trailer.
Note:You may experience reduced systemperformance on road surfaces that limitdeceleration. For example, roads with ice,loose gravel, mud or sand.
SWITCHING CROSS TRAFFIC
BRAKING ON AND OFF
1.Press Features on the touchscreen.
2.Press Driver Assistance.
3.Switch Cross Traffic Braking on oroff.
OVERRIDING CROSS TRAFFIC
BRAKING
There could be instances whenunexpected or unwanted braking occurs.Firmly pressing the accelerator pedal orswitching the feature off overrides thesystem.
CROSS TRAFFIC BRAKING
INDICATORS
If the system determines that a collisionwith an obstacle may occur, full brakingmay apply. Bring your vehicle to a stop asafe distance away from the obstacle.
A message and warningindicator appear when thesystem applies the brakes.
CROSS TRAFFIC BRAKING – TROUBLESHOOTING
CROSS TRAFFIC BRAKING – INFORMATION MESSAGES
ActionMessage
Drive the vehicle on a straight road for ashort period. Make sure the parking aids andcross traffic alert systems are on. If themessage remains on, have the systemchecked as soon as possible.
Reverse Brake Assist Not Available SeeManual
Displays when a system error has occurred.Have your vehicle checked as soon aspossible.
Reverse Brake Assist Fault
Displays when cross traffic braking is off.Reverse Brake Assist Off
263
2023 Super Duty (TFH) Canada/United States of America, enUSA, Edition date: 202211, DOMCross Traffic Braking (If Equipped)E293490

WHAT IS HILL START ASSIST
Hill Start Assist makes it easier for you topull away when your vehicle is on a slopewithout using the parking brake.
HOW DOES HILL START
ASSIST WORK
When the system activates, your vehicleremains stationary for a few seconds afteryou release the brake pedal. This gives youtime to move your foot from the brakepedal to the accelerator pedal. The brakesrelease when you apply the acceleratorpedal and the vehicle begins to moveforward, or the vehicle is stationary beyondhill start assist hold time.
The system activates when your vehicle isin any forward gear and facing uphill, orwhen your vehicle is in reverse (R) andfacing downhill.
HILL START ASSIST
PRECAUTIONS
WARNING: The system does notreplace the parking brake. When youleave your vehicle, always apply theparking brake.
WARNING: You must remain inyour vehicle when the system turns on.At all times you are responsible forcontrolling your vehicle, supervising thesystem, and intervening if required.Failure to follow this instruction couldresult in the loss of control of yourvehicle, personal injury or death.
SWITCHING HILL START
ASSIST ON AND OFF
Hill start assist is active when you switchthe ignition on. You cannot switch thesystem on or off.
HILL START ASSIST –
TROUBLESHOOTING
HILL START ASSIST –INFORMATION MESSAGES
ActionMessage
Displays whensystem is not avail-able. Have yourvehicle checked assoon as possible.
Hill Start Assist NotAvailable
HILL START ASSIST VIDEOS
Hill Start Assist
265
2023 Super Duty (TFH) Canada/United States of America, enUSA, Edition date: 202211, DOMHill Start Assist

HOW DOES AUTO HOLD WORK
Auto hold applies the brakes to hold yourvehicle after you bring the vehicle to a stop.This can help when waiting on a hill or intraffic.
SWITCHING AUTO HOLD ON
AND OFF
WARNING: The system does notreplace the parking brake. When youleave your vehicle, always apply theparking brake.
WARNING: You must remain inyour vehicle when the system turns on.At all times, you are responsible forcontrolling your vehicle, supervising thesystem and intervening, if required.Failure to take care may result in the lossof control of your vehicle, seriouspersonal injury or death.
You can switch the system on or off byaccessing the menu on the touchscreen.
1.Press Settings on the touchscreen.
2.Press Driver Assistance.
Note:You can only switch the system onafter you close the driver door and fastenyour seatbelt.
Note:The system remembers the lastsetting when you start your vehicle.
Note:When using an automatic car wash,make sure to switch auto hold off, or shiftto neutral (N) with the brake pedal appliedto ensure auto hold is not active.
USING AUTO HOLD
1.Bring your vehicle to a complete stop.The auto hold active indicatorilluminates in the information display.
2.Release the brake pedal. The systemholds your vehicle at a standstill. Theauto hold active indicator remainsilluminated in the information display.
3.Apply the accelerator and drive off ina normal manner. The system releasesthe brakes and the auto hold activeindicator switches off.
Note:The system only activates if youapply enough brake pressure on the brakepedal to bring the vehicle to a standstill.
Note:Under certain conditions, the systemcould apply the electric parking brake. Thebrake system warning lamp illuminates. Theelectric parking brake releases when youpress the accelerator pedal. SeeAutomatically Releasing the ElectricParking Brake (page 254).
Note:Auto hold cancels if you shift intoreverse (R), or neutral (N), and press thebrake pedal.
There could be actions that can cause theauto hold system not to work when thefollowing occur:
•When you use active park assist.
•The driver door is open.
•You shift into reverse (R), or neutral(N) before the system is active.
•Your vehicle is in temporary neutralmode.
AUTO HOLD INDICATORS
Illuminates when the system isactive.
266
2023 Super Duty (TFH) Canada/United States of America, enUSA, Edition date: 202211, DOMAuto HoldE323448

Stability Control and Traction Control with Roll Stability Control
Traction ControlSystemElectronicStability ControlRoll StabilityControlStability ControlOFF Light
Enabled3Enabled3EnabledIlluminatedduring bulbcheck
Default at start-up
Disabled1Enabled3EnabledIlluminatedButton pressedmomentarily
Disabled1Disabled2EnabledIlluminatedButton pressedand held for 5 -15 seconds
Disabled1DisabledDisabledIlluminatedTransfer case isswitched to 4x4Low or put intoRock CrawlMode
1 The Traction Control system can still be enabled but with tighter or looser thresholds.2 When you press and hold the button, a progress bar will display to show the button holdtime progress.3 Functions can vary depending on what Selectable Drive Mode the vehicle is currentlyin.
STABILITY CONTROL
INDICATOR
If it does not illuminate when youswitch the power on, or remainson, this indicates a malfunction.Have your vehicle checked by anauthorized dealer as soon as possible.
272
2023 Super Duty (TFH) Canada/United States of America, enUSA, Edition date: 202211, DOMStability ControlE138639

TRAIL CONTROL INDICATORS
TRAIL CONTROL – TROUBLESHOOTING
TRAIL CONTROL – INFORMATION MESSAGES
DetailsMessage
Displays when you must reduce your vehicle speed touse trail control.Reduce Speed To Enter TrailControl
Displays when you must release the park brake to usetrail control.Trail Control Not Available withPark Brake Applied
Displays when you must switch off the trailer backupassist to use trail control.Trail Control Not AvailableWhile Pro Trailer BackupAssist™ Active
Displays when you successfully enabled trail controland can set a speed with the Set+ or Set- control.Trail Control Enabled Use SETButton to Set Speed
Displays when a system fault has occurred when trailcontrol was active and the driver must resume control.Trail Control Off Driver ResumeControl
Displays when the system has turned off.Trail Control Off
Displays when a system fault is present. See the trailcontrol section in your Owner's Manual. See yourauthorized dealer for diagnosis.
Trail Control Fault See Manual
Displays when you must be in drive (D), neutral (N) orreverse (R) to use trail control.Trail Control To Activate SelectGear
Displays when you must switch the cruise control offto use trail control.Trail Control Not Available withCruise Control Active
Displays when you must close the driver door to usetrail control.Trail Control Not Available withDriver Door Open
Due to some driver action, Trail Control propulsion wasturned off but the vehicle will still brake if descendinga hill. The driver must press the Trail Control switch toturn the feature OFF, they can then turn it back on.
Descent Control Now ActivePress Trail Control Switch ToExit
Displays when you must have the seatbelt on to usetrail control.Trail Control Not Available withSeatbelt Off
274
2023 Super Duty (TFH) Canada/United States of America, enUSA, Edition date: 202211, DOMTrail Control (If Equipped)E272858

WHAT IS TRAIL TURN ASSIST
Trail turn assist can reduce the turningradius of your vehicle by applying thebrakes to the inside rear wheel inlow-speed, high steering-angle maneuvers.
TRAIL TURN ASSIST
PRECAUTIONS
Note:Do not use trail turn assist on dry,hard surfaced roads. Doing so can produceexcessive noise, increase tire wear and maydamage drive line, or braking components.Trail turn assist is only intended for slippery,or loose surfaces.
You may hear noise from the anti-lockbrake system while trail turn assist isactive. This is normal operation.
TRAIL TURN ASSIST
LIMITATIONS
Trail turn assist can only be used when thevehicle’s four-wheel drive system is in thefour-wheel drive high (4H), or four-wheeldrive low (4L) modes.
Trail Turn Assist cannot be used when thevehicle’s rear differential is locked. If therear differential has recently been lockedprior to Trail Turn Assist being turned on,Trail Turn Assist may not activate until itcan confirm that the rear differential isunlocked.
SWITCHING TRAIL TURN
ASSIST ON AND OFF
While your vehicle is in four-wheel drivehigh (4H) or four-wheel drive low (4L),press the trail turn assist button to switchthe feature on. Trail turn assist is on at thistime but does not activate until the:
•Vehicle speed is less than 12 mph(19.3 km/h).
•Rear differential is fully unlocked.
•Steering wheel is almost fully turnedto the left or right.
Switch trail turn assist off by performingany of the following:
•Press the trail turn assist button again.
•Select two-wheel drive high (2H), orfour-wheel drive auto (4A).
•Switch on the rear locking differential.
TRAIL TURN ASSIST
INDICATORS
When trail turn assist is on, oneof these two indicators will bedisplayed, depending on thedirection of the vehicle’s lastturn. When the feature isavailable but not in use, theindicator will be gray. When the feature isactive the indicator will be green.
275
2023 Super Duty (TFH) Canada/United States of America, enUSA, Edition date: 202211, DOMTrail Turn Assist (If Equipped)E338899 E338900

HYDRAULIC POWER
STEERING
HYDRAULIC POWER STEERINGGUIDELINES
To help prevent damage to the powersteering system:
•Do not hold the steering wheel at itsfurthest turning points for more thanthree to five seconds when the engineis running.
•Avoid continuously steering back andforth with elevated engine RPM as thismay overheat the system. If trying tofree a stuck vehicle, pause betweenattempts to allow the power steeringsystem to cool or seek assistance.Typical steering and driving maneuversallow the system to cool.
•Do not operate the vehicle if the powersteering pump fluid level is below theMIN mark on the reservoir.
•Some noise is normal during operation.If excessive, check for low powersteering pump fluid level beforeseeking service by your dealer.
•Heavy or uneven efforts may be causedby low power steering fluid. Check forlow power steering pump fluid levelbefore seeking service by your dealer.
•Do not fill the power steering pumpreservoir above the MAX mark on thereservoir, as this may result in leaksfrom the reservoir.
If the power steering system breaks downor if you switch the engine off, you cansteer the vehicle manually, but it takesmore effort.
If you have any steering componentsserviced or replaced, install new fasteners.Many fasteners have coatings with threadadhesive, or have prevailing torquefeatures you cannot reuse. Do not reuse abolt or nut. Torque fasteners tospecifications.
Steering Tips
If the steering wanders or pulls, check for:
•An improperly inflated tire.
•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.
Electronic Torque Overlay Steering
(If Equipped)
WARNING: The electric powersteering system has diagnostic checksthat continuously monitor the system. Ifa fault is detected, a message displaysin the information display. Stop yourvehicle as soon as it is safe to do so.Switch the ignition off. After at least 10seconds, switch the ignition on andwatch the information display for asteering system warning message. If asteering system warning messagereturns, have the system checked assoon as possible.
WARNING: If the system detectsan error, you may not feel a difference inthe steering, however a serious conditionmay exist. Have your vehicle checked assoon as possible. Failure to do so mayresult in loss of steering control.
279
2023 Super Duty (TFH) Canada/United States of America, enUSA, Edition date: 202211, DOMSteering

The electronic torque overlay steeringsystem adds supplemental steering assistto the hydraulic gear when needed,dependent on vehicle conditions such asvehicle speed, steering wheel angle, andsteering wheel torque. The hydraulicsteering system provides the majority ofsteering assistance. The electronic torqueoverlay enables features such as pro trailerbackup assistance and lane departurewarning.
If your vehicle loses electrical power whileyou are driving, your vehicle loses electricpower steering assistance. The steeringsystem still operates, and you can steeryour vehicle with hydraulic assist. Steeringyour vehicle with only hydraulic assistrequires 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.
LOCATING THE HYDRAULICPOWER STEERING FLUIDRESERVOIR
The hydraulic power steering fluid reservoiris found in the engine compartment. SeeUnder Hood Overview (page 441).
CHECKING THE HYDRAULICPOWER STEERING FLUID
Check the power steering fluid. SeeScheduled Maintenance (page 591). Ifadding fluid is necessary, use onlyMERCON LV ATF.
Check the fluid level when it is at ambienttemperature.
1.Check the fluid level in the reservoir. Itshould be between the MIN and MAXrange. Do not add fluid if the level iswithin this range.
2.If the fluid level is low, add fluid to bringthe fluid level up to between the MINand MAX range.
3.Switch the engine on.
4.While the engine idles, turn the steeringwheel left and right several times.
5.Switch the engine off.
6.Recheck the fluid level in the reservoir.Do not add fluid if the level is betweenthe MIN and MAX range.
7.If the fluid is low, add fluid in smallamounts, continuously checking thelevel until it is between the MIN andMAX range. For proper fluid type, SeeCapacities and Specifications (page520). Be sure to put the cap back on thereservoir.
STEERING –
TROUBLESHOOTING
STEERING – WARNINGINDICATORS
The electric power steeringsystem indicator illuminates ifthe system detects a fault duringthe continuous diagnostic checks.
Note:If a red warning message displays,stop your vehicle as soon as it is safe to doso.
280
2023 Super Duty (TFH) Canada/United States of America, enUSA, Edition date: 202211, DOMSteeringE223375