wheel FORD BRONCO 2023 Service Manual

SWITCHING THE ELECTRONIC
LOCKING DIFFERENTIAL ON
AND OFF
Activating the Electronic LockingDifferential
Front locking differential switchA
Rear locking differential switchB
You can activate the front or rear lockingdifferential by pressing the switch on thecenter switch pack.
Note:Do not perform this operation whencruise control or trail control is selected andactive. The differential could have difficultyengaging.
Front Electronic Locking Differential Engagement Speed and Availability
Automatic Re-Engagement SpeedAutomatic Disen-gagement SpeedMaximum Engage-ment SpeedFour-Wheel DriveMode
20 mph (32 km/h)25 mph (41 km/h)20 mph (32 km/h)4L
Rear Electronic Locking Differential Engagement Speed and Availability
Automatic Re-Engagement SpeedAutomatic Disen-gagement SpeedMaximum Engage-ment SpeedG.O.A.T Modes(Four-Wheel DriveModes)
20 mph (32 km/h)25 mph (41 km/h)20 mph (32 km/h)Normal (2H, 4A, 4H)
20 mph (32 km/h)25 mph (41 km/h)20 mph (32 km/h)Sport (2H, 4A, 4H)
20 mph (32 km/h)25 mph (41 km/h)20 mph (32 km/h)Slippery (4A, 4H, 4L)
20 mph (32 km/h)25 mph (41 km/h)20 mph (32 km/h)Tow/Haul (4A, 4H,4L)
No speed limitNo speed limitNo speed limitBaja (2H, 4H, 4L)
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Automatic Re-Engagement SpeedAutomatic Disen-gagement SpeedMaximum Engage-ment SpeedG.O.A.T Modes(Four-Wheel DriveModes)
No speed limitNo speed limitNo speed limitRock Crawl (4L)1
No speed limitNo speed limitNo speed limitOff-Road(4H, 4L)
1 Automatically engages when you select these G.O.A.T modes. You have the ability tomanually override the automatic engagement by pressing the electronic locking differentialswitch.
Automatic Re-Engagement SpeedAutomatic Disen-gagement SpeedMaximum Engage-ment SpeedG.O.A.T Modes(Four-Wheel DriveModes)
No speed limitNo speed limitNo speed limit4L
ELECTRONIC LOCKING
DIFFERENTIAL INDICATORS
Rear locking differentialIndicator.
Front locking differentialIndicator.
If the front or rear indicator in the clusteris amber, both wheels of the indicated axleare locked together providing additionaltraction.
If the electronic locking differential isselected and the indicator in the cluster isgray or turns from amber to gray whiledriving, one of the following has occurred:
•Your vehicle speed is too high.
•The accelerator pedal is too high duringan engagement attempt.
•Your vehicle is experiencing ananti-lock brake activation.
•The left and right wheel speeddifference is too high during anengagement attempt.
If the electronic locking differential isselected and the indicator in the clusterdoes not illuminate, one of the followinghas occurred:
•The electronic locking differential is notallowed in the current G.O.A.T modeand is accompanied by SELECTEDLOCKING DIFFERENTIAL NOTAVAILABLE IN CURRENT Drive Modein the instrument cluster display.
•The electronic locking differential is notallowed in the current 4x4 mode andis accompanied by SELECTEDLOCKING DIFFERENTIAL NOTAVAILABLE IN CURRENT 4x4 MODE inthe instrument cluster display.
•The system has malfunctioned and isaccompanied by CHECK LOCKINGDIFFERENTIAL in the instrumentcluster display. See your authorizeddealer for assistance.
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ELECTRONIC LOCKING DIFFERENTIAL – TROUBLESHOOTING
ELECTRONIC LOCKING DIFFERENTIAL – INFORMATION MESSAGES
DetailsMessage
The selected electronic locking differential is not available incurrent G.O.A.T mode. See G.O.A.T. Mode Control (page 260).Selected Locking Differ-ential Not Available inCurrent Drive Mode
The selected electronic locking differential is not available in yourcurrent four-wheel drive mode. See Four-Wheel Drive (page 195).Selected Locking Differ-ential Not Available inCurrent 4x4 Mode
The selected electronic locking differential requires that yourelease the accelerator pedal in order to engage.To Engage LockingDifferential ReleaseAccelerator Pedal
An electronic locking differential system fault is present. See yourauthorized dealer as soon as possible.Check Locking Differen-tial
The following conditions affect theelectronic locking differential:
•Based on G.O.A.T mode selection, therear electronic locking differential doesnot engage if your vehicle speed isabove 20 mph (32 km/h).
•The front electronic locking differentialdoes not engage if your vehicle speedis above 20 mph (32 km/h) infour-wheel drive low (4L).
•Based on G.O.A.T mode selection, theelectronic locking differentialautomatically disengages at speedsabove 25 mph (41 km/h) andautomatically re-engages at speedsbelow 20 mph (32 km/h).
•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 four-wheel drive low (4L), the frontelectronic locking differentialautomatically disengages at speedsabove 25 mph (41 km/h) andautomatically re-engages at speedsbelow 20 mph (32 km/h).
•The AdvanceTrac system has theability to take over control of theelectronic locking differential anddisable it during driving maneuverswhen necessary.
Operating 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 or two front tires, you may havelimited electronic locking differentialfunctionality. If the electronic lockingdifferential has difficulty disengaging,
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release the accelerator pedal and turn thesteering wheel in the opposite directionwhen rolling. We recommend engagingand disengaging the electronic lockingdifferential at a stop when you mount aspare or mismatched tire on either axle.
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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,or continuous squeal sound is present,the brake lining could be worn-out.Have the system checked by anauthorized dealer.
There is an electrical motor soundwhen I press on the brake pedal oractivate the park brake switch. Is thisnormal?
Yes, those sounds are the electronicbrake booster or the electronic parkbrake operating.
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 (page422).
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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 system turns on each time you switchthe ignition on.
If your vehicle is stuck in mud or snow,switching traction control off may bebeneficial as this allows the wheels to spin.
Switching the System Off
The switch for the stability andtraction control system is on theinstrument 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.
Note:When you switch traction control off,stability control remains fully active.
Note:When you place your vehicle intofour-wheel drive low (4L), the tractioncontrol disables. Traction control resumeswhen you put your vehicle back intotwo-wheel drive or four-wheel drive high(4H).
Note:For additional information on thetraction and stability control systems. SeeStability Control (page 219).
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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HOW DOES STABILITY
CONTROL WORK
WARNING: Vehicle modificationsinvolving braking system, aftermarketroof racks, suspension, steering system,tire construction and wheel and tire sizemay change the handling characteristicsof your vehicle and may adversely affectthe performance of the electronicstability control system. In addition,installing any stereo speakers mayinterfere with and adversely affect theelectronic stability control system.Reducing the effectiveness of theelectronic stability control system couldlead to an increased risk of loss of vehiclecontrol, vehicle rollover, personal injuryand death.
WARNING: Remember that evenadvanced technology cannot defy thelaws of physics. It's always possible tolose control of a vehicle due toinappropriate driver input for theconditions. Aggressive driving on anyroad condition can cause you to losecontrol of your vehicle increasing the riskof personal injury or property damage.Activation of the electronic stabilitycontrol system is an indication that atleast some of the tires have exceededtheir ability to grip the road; this couldreduce the operator's ability to controlthe vehicle potentially resulting in a lossof vehicle control, vehicle rollover,personal injury and death.
WARNING: You are responsible forcontrolling your vehicle at all times. Thesystem is designed to be an aid and doesnot relieve you of your responsibility todrive with due care and attention. Failureto follow this instruction could result inthe loss of control of your vehicle,personal injury or death.
If a driving condition activates either thestability control or traction control you mayexperience the following conditions:
•The stability and traction control lightflashes.
•Your vehicle slows down.
•Reduced engine power.
The stability control system has severalfeatures built into it to help you maintaincontrol of your vehicle:
Electronic Stability Control
Electronic stability control enhances yourvehicle’s ability to prevent skids or lateralslides by applying brakes to one or moreof the wheels individually and, if necessary,reducing engine power.
Roll Stability Control
Roll stability control enhances yourvehicle’s ability to prevent rollovers bydetecting your vehicle’s roll motion andthe rate at which it changes by applyingthe brakes to one or more wheelsindividually.
Curve Control
Curve control enhances your vehicle’sability to follow the road when corneringseverely or avoiding objects in the roadway.Curve control operates by reducing enginepower and, if necessary, applying brakesto one or more of the wheels individually.
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Side Wind Stabilization
Side wind stabilization is an advancedfeature that works by carefully applyingthe brakes on one side of the vehicle toreduce the effect of a side wind gust onthe vehicle's path.
Torque Vectoring by Brakes
Torque vectoring control applies braketorque on the inner driven wheel in a curvefor better traction to avoid an understeer,or oversteer situation. Unlike electronicstability control, enhanced torquevectoring control does not slow thevehicle. It helps control excessive wheelslip and gives the vehicle improvedcornering agility.
Traction Control
Traction control enhances your vehicle’sability to maintain traction of the wheelsby detecting and controlling wheel spin.See What Is Traction Control (page 217).
Vehicle without stability controlskidding off its intended route.A
Vehicle with stability controlmaintaining control on a slipperysurface.
B
SWITCHING STABILITY
CONTROL ON AND OFF
The system turns on each time you switchthe ignition on.
The electronic stability control system isdisabled when the transmission selectoris in reverse (R).
You can switch the traction controlindependently. See Switching TractionControl On and Off (page 217).
Note:When you place your vehicle intofour-wheel drive low (4L), the stabilitycontrol disables. Stability control resumeswhen you put your vehicle back intotwo-wheel drive or four-wheel drive high(4H).
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ESC Features
Traction ControlSystemsElectronicStability ControlStability ControlOff LightModeButton Func-tions
EnabledEnabledOn during bulbcheckDefault - Trac-tion Control Onand NormalAdvancetrac
Default at start-up
DisabledEnabledOnTraction ControlOffButtonmomentarilypressed - singlepress
DisabledDisabledOnAdvanceTracOffButton pressedand held for fiveseconds
EnabledEnabledOffReturn toDefaultButton pressedwhen TractionControl Off orAdvance TracOff
Note:Do not use the AdvanceTrac Offsetting on public roadways.
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.
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.
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WHAT IS TRAIL CONTROL
WARNING: The system does notcontrol speed in low traction conditionsor extremely steep slopes. The systemis designed to be an aid and does notrelieve you of your responsibility to drivewith due care and attention. Failure tofollow this instruction could result inpersonal injury.
Trail control lets you focus on steeringduring low-speed and off-road use bycontrolling your vehicle's acceleration andbraking to maintain the speed that you set.
You may hear a noise from the anti-lockbrake system pump motor when you usethe system. This is normal.
TRAIL CONTROL LIMITATIONS
Trail control is unavailable when any of thefollowing occur:
•Your vehicle speed is greater than20 mph (32 km/h) in two-wheel drivehigh (2H) or four-wheel drive high (4H)modes.
•Your vehicle speed is greater than9 mph (15 km/h) in four-wheel drivelow (4L) mode.
•Your vehicle speed is greater than5 mph (8 km/h) in reverse (R).
•The transmission is in park (P).
•The driver side door is open or yourseatbelt is off when the driver side dooris removed.
•Cruise control is on.
•Pro trailer backup assist is on.
SWITCHING TRAIL CONTROL
ON AND OFF
Bronco Off-Road Features
Press the button on the center console.
Note:If your vehicle is equipped with trailone pedal drive, this will activate trail onepedal drive if you are in four wheel drive high(4H) or four wheel drive low (4L) mode,until you set a speed for trail control.
The system switches off if you press thebutton again or exceed 40 mph (64 km/h).
SETTING THE TRAIL CONTROL
SPEED
Note:The buttons are on the steeringwheel.
Drive to the speed you prefer.
Press the button to set orincrease the set speed. Pressand hold to adjust the speed inlarger increments.
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