wheel FORD SUPER DUTY 2023 Service Manual

SELECTING A FOUR-WHEEL
DRIVE MODE
The drive mode control is on theinstrument panel.
Press the four-wheel drive mode buttonthat best fits the current driving conditions.You can select two-wheel drive high (2H)or four-wheel drive high (4H) at a stop orwhile driving. When the shift is complete,the mode you select appears in theinstrument cluster display. While shifting,the lights on the drive mode control canflash and you could see messages in theinstrument cluster display indicating thata shift is in progress or to release theaccelerator pedal to improve shiftperformance.
Note:Momentarily releasing the acceleratorpedal while a shift in progress messagedisplays improves engagement ordisengagement performance.
Note:Do not perform this operation whencruise control or trail control is selected andactive. The system may not shift asexpected.
Note:Do not perform this operation if therear wheels are slipping, when making atight turn or when applying the acceleratorpedal. The system may not shift asexpected.
Note:You could hear some noise as thesystem shifts or engages, this is normal.
If the system detects a fault, a warningmessage appears in the instrument clusterdisplay. See Four-Wheel Drive –Information Messages (page 243).
Shifting to or from Four-WheelDrive Low (4L)
To select or exit four-wheel drive low (4L):
1.Bring your vehicle to a speed of 3 mph(5 km/h) or less.
2.Place the transmission in neutral (N)
3.Press the desired four-wheel drivebutton on the drive mode control.
A message appears in the instrumentcluster display indicating a four-wheeldrive shift is in progress. If any of the aboveshift conditions are not present, the shiftwill not occur and information guiding youthrough the proper shifting proceduresappears in the instrument cluster display.If there is a transfer case tooth blockage amessage appears in the instrument clusterdisplay. To alleviate this condition, placethe transmission in a forward gear, moveyour vehicle forward approximately 5 ft(1.5 m), and shift the transmission back toneutral (N) to allow the transfer case tocomplete the range shift.
Note:You could hear some noise as thesystem shifts or engages, this is normal.
If the system detects a fault, a warningmessage appears in the instrument clusterdisplay. See Four-Wheel Drive –Information Messages (page 243).
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FOUR-WHEEL DRIVE MODES
TWO-WHEEL DRIVE HIGH
Two-wheel drive high is for generalon-road driving. Power is sent to the rearwheels only.
Note:Two-wheel drive high can turn on oroff based on Drive Mode selection See DriveMode Control (page 311).
FOUR-WHEEL DRIVE HIGH
Four-wheel drive high provideselectronically or mechanically lockedfour-wheel drive power to both the frontand rear wheels for use in off-road orwinter conditions such as deep snow, sandor mud. This mode is not for use on drypavement.
Note:Four-wheel drive high can turn on oroff automatically based on Drive Modeselection. See Selecting a Drive Mode(page 311).
FOUR-WHEEL DRIVE LOW
Four-wheel drive low provideselectronically or mechanically lockedfour-wheel drive power to both the frontand rear wheels for use on low tractionsurfaces, but does so with additionalgearing for increased torque multiplication.This mode is only for off-road conditionssuch as deep sand, steep slopes, or pullingheavy objects.
Note:Four-wheel drive low can turn on oroff automatically based on drive modeselection. See Selecting a Drive Mode(page 311).
FOUR-WHEEL DRIVE
INDICATORS
Two-wheel Drive High
Momentarily illuminates whenyou select two-wheel drive high.
Four-wheel Drive High
Continuously illuminates whenyou select four-wheel drive high.
Four-wheel Drive Low
Continuously illuminates whenyou select four-wheel drive low.
TRANSFER CASE FLUID
CAPACITY AND
SPECIFICATION
See Transfer Case Fluid Capacity andSpecification (page 540).
FOUR-WHEEL DRIVE –
TROUBLESHOOTING
FOUR-WHEEL DRIVE – WARNINGLAMPS
Illuminates when a four-wheeldrive or power train fault ispresent.
Note:When a system fault is present, thesystem can typically remain in whichevermode was selected prior to the faultcondition occurring. It does not default totwo-wheel drive in all circumstances. Whenthis warning is displayed, have your vehicleserviced by an authorized dealer.
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FOUR-WHEEL DRIVE – INFORMATION MESSAGES
ActionMessage
A four-wheel drive system fault is present.Have the system checked as soon aspossible.
Check 4x4
The four-wheel drive system is making ashift.4x4 Shift in Progress
Displays when you attempt to switch tofour-wheel drive low mode and you do notshift the transmission to neutral (N).
For 4x4 LOW Shift to N
Displays when you attempt to switch tofour-wheel drive low mode and yourvehicle's speed is greater than 3 mph(5 km/h).
For 4x4 LOW Slow to 3 MPH
For 4x4 LOW Slow to 5 km/h
Displays when you attempt to switch fromfour-wheel drive low mode and you do notshift the transmission to neutral (N).
To Exit 4x4 LOW Shift to N
Displays when you attempt to switch fromfour-wheel drive low mode and yourvehicle's speed is greater than 3 mph(5 km/h).
To Exit 4x4 LOW Slow to 3 MPH
To Exit 4x4 LOW Slow to 5 km/h
Displays when there is a transfer case geartooth blockage while shifting to or fromfour-wheel drive low mode or to the neutralstate. Place the transmission in a forwardgear, move your vehicle forward approxim-ately 5 ft (1.5 m), and shift the transmissionback to neutral (N) to allow the transfercase to complete the range shift.
Shift Delayed Drive Forward
Displays when the system requires anadditional transmission shift to neutral (N)to complete a transfer case shift.
Shift to Neutral
Displays when the system is unable toengage four-wheel drive high and requiresthe driver to slow down before attemptingto engage.
To Engage 4x4 Slow to 3 MPH
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ActionMessage
To Engage 4x4 Slow to 5 km/h
Displays when the four-wheel drive systemrequests that you release the acceleratorpedal to complete a four-wheel drive shift.See Selecting a Four-Wheel Drive Mode(page 241).
To Engage 4x4 Release Accelerator Pedal
Displays when the four-wheel drive systemdetects a mechanical shift block whenshifting out of four-wheel drive high. SeeFour-Wheel Drive Limitations (page 239).
4x4 Unable to Disengage See Manual
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WHAT IS THE ELECTRONIC
LOCKING DIFFERENTIAL
The electronic locking differential is adevice housed in the rear axle and whenactivated, allows both wheels on that axleto turn at the same speed. The electroniclocking differential provides additionaltraction should your vehicle become stuck.
HOW DOES THE ELECTRONIC
LOCKING DIFFERENTIAL
WORK
You can activate the differentialelectronically and shift it on the fly withinthe operating speed range. The electronicdifferential disengages when the vehiclespeed exceeds a set value and it reengageswhen the vehicle speed drops below a setvalue. See Switching the ElectronicLocking Differential On and Off (page245). The electronic locking differentialcould engage based on certain selecteddrive modes. See Selecting a Drive Mode(page 311). The electronic lockingdifferential is for use in mud, rocks, sand,or any off-road condition where you needmaximum traction.
Note:The electronic locking differential isfor off-road use only and is not for use ondry pavement. Using the electronic lockingdifferential on dry pavement results inincreased tire wear, noise and vibration.
Note:The electronic locking differentialactivates or deactivates automaticallybased on speed, four-wheel drive mode, anddrive mode selection. See Switching theElectronic Locking Differential On andOff (page 245).
ELECTRONIC LOCKING
DIFFERENTIAL PRECAUTIONS
Operating the Electronic LockingDifferential with a Spare orMismatched Tires
On vehicles with an electronic lockingdifferential, the size of the spare tire canaffect performance of the system. If thereis a significant difference between the tworear tires, you may have limited electroniclocking differential functionality. If thesystem has difficulty disengaging, releasethe accelerator pedal and turn the steeringwheel in the opposite direction whenrolling. We recommend engaging anddisengaging the electronic lockingdifferential at a stop when you mount aspare on the rear axle.
SWITCHING THE ELECTRONIC
LOCKING DIFFERENTIAL ON
AND OFF - 4X4
Press the electronic lock differential switchto engage and disengage the lockingdifferential.
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4X4 Rear Electronic Locking Differential Engagement Speed and Availability
Automatic Re-Engagement SpeedAutomatic Disen-gagement SpeedMaximum Engage-ment SpeedDrive Modes
20 mph (30 km/h)25 mph (41 km/h)20 mph (30 km/h)Eco (2H, 4H)
20 mph (30 km/h)25 mph (41 km/h)20 mph (30 km/h)Tow/Haul Mode(2H,4H)
20 mph (30 km/h)25 mph (41 km/h)20 mph (30 km/h)Normal (2H, 4H)
20 mph (30 km/h)25 mph (41 km/h)20 mph (30 km/h)Slippery (2H, 4H)
No Speed LimitNo Speed LimitNo Speed LimitOff-Road (4H, 4L)1
No Speed LimitNo Speed LimitNo Speed LimitRock Crawl (4L)2
1 Engages when you select these drive modes. You have the ability to manually overridethe automatic engagement by pressing the electronic locking differential.2 Engages when you select these drive modes. You have the ability to manually overridethe automatic engagement by pressing the electronic locking differential. Only availablewith Tremor Package.
Automatic Re-Engagement SpeedAutomatic Disen-gagement SpeedMaximum Engage-ment Speed4WD Mode
No Speed LimitNo Speed LimitNo Speed LimitFour-Wheel DriveLow (4L)
Note:The electronic locking differentialmay not engage if you press the acceleratorpedal during an engagement attempt. Amessage could display in the instrumentcluster display guiding you to release theaccelerator pedal.
Note:Switching the electronic lockingdifferential off while turning results indisengagement difficulties. If the electroniclocking differential has difficultydisengaging, release the accelerator pedaland turn the steering wheel back and forthin small increments while maintainingcontrol and following a straight line.
Note:The electronic locking differential isfor off-road use only and is not for use ondry pavement. Using the electronic lockingdifferential on dry pavement results inincreased tire wear, noise and vibration.
Note:Do not perform this operation whencruise control or trail control is selected andactive. The system may not engage ordisengage as expected.
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SWITCHING THE ELECTRONIC
LOCKING DIFFERENTIAL ON
AND OFF - 4X2
Press the electronic locking differentialswitch to engage and disengage theelectronic locking differential.
4X2 Rear Electronic LockingDifferential Engagement Speed andAvailability
AutomaticRe-Engage-ment Speed
AutomaticDisengage-ment Speed
MaximumEngagementSpeed
20 mph(30 km/h)25 mph(41 km/h)20 mph(30 km/h)
Note:The electronic locking differential canactivate or deactivate automatically basedon speed, four-wheel drive mode, and drivemode selection. See Selecting a DriveMode (page 311).
Note:The electronic locking differentialmay not engage if you press the acceleratorpedal during an engagement attempt. Amessage could display in the instrumentcluster display guiding you to release theaccelerator pedal.
Note:Switching the electronic lockingdifferential off while turning results indisengagement difficulties. If the electroniclocking differential has difficultydisengaging, release the accelerator pedaland turn the steering wheel back and forthin small increments while maintainingcontrol and following a straight line.
Note:The electronic locking differential isfor off-road use only and is not for use ondry pavement. Using the electronic lockingdifferential on dry pavement results inincreased tire wear, noise and vibration.
Note: Do not perform this operation whencruise control or trail control is selected andactive. The system may not engage ordisengage as expected.
ELECTRONIC LOCKING
DIFFERENTIAL INDICATORS
If both rear wheel axle shaftslock together, the indicator in thecluster is amber, providingadditional traction.
If you select the electronic lockingdifferential and the indicator in the clusteris gray or turns from amber to gray whiledriving, one of the following has occurred:
•The vehicle speed is too high.
•The accelerator pedal is too high duringan engagement attempt.
•The vehicle is experiencing an anti-lockbrake activation.
•The left and right wheel speeddifference is too high during anengagement attempt.
If you select the electronic lockingdifferential and the indicator in the clusterdoes not turn on, the following hasoccurred:
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BRAKES – FREQUENTLY ASKEDQUESTIONS
Is it normal for my brakes to makenoise?
Occasional brake noise is normal. If ametal-to-metal, continuous grinding, orsqueal sound is present, the brake liningcould be worn. Have the system checked.
There is an electrical motor soundwhen I press on the brake pedal oractivate the park brake switch. Isthis normal?
Yes, those sounds are the electronic brakebooster or the electronic park brakeoperating.
Note: Brake dust could accumulate on thewheels, even under normal drivingconditions. Some dust is normal as thebrakes wear and does not contribute tobrake noise. See Cleaning Wheels (page?).
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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
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WHAT IS TRACTION CONTROL
The traction control system helps to avoiddrive wheel spin and loss of traction.
HOW DOES TRACTION
CONTROL WORK
If your wheels begin to spin, the loss oftraction can compromise steering controland stability of the vehicle. The tractioncontrol system applies the brakes toindividual wheels and when needed,reduces engine power at the same time toincrease traction.
SWITCHING TRACTION
CONTROL ON AND OFF
WARNING: Operating your vehiclewith the traction control disabled couldlead to an increased risk of loss of vehiclecontrol, vehicle rollover, personal injuryand death.
The traction control system turns on eachtime you switch the ignition on.
The button for the stability and tractioncontrol system is on the instrument panel.
Press and release the button to switchtraction control off. The stability controlsystem remains fully active, to switch it off,press and hold the button for a fewseconds, then release.
When you switch traction control off, amessage and an illuminated icon appearon the instrument cluster.
Press the switch again to turn the tractioncontrol system back on to normaloperation.
If your vehicle is stuck in mud or snow,switching traction control off may bebeneficial as this allows the wheels to spin.
TRACTION CONTROL
INDICATOR
Stability and Traction ControlIndicator
If the indicator does notilluminate when you switch theignition on, or remains on whenthe engine is running, this indicates amalfunction. Have your vehicle checkedby an authorized dealer as soon aspossible.
The traction control off indicatorilluminates when you switch thetraction control system off, orwhen an alternative stability control modeis selected that requires the tractioncontrol off depending on the drive modeselected.
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