2023 FORD BRONCO transfer case

Using Start in Gear.......................................172
Start in Gear – Troubleshooting.............173
Auto-Start-Stop
What Is Auto-Start-Stop..........................174
Auto-Start-Stop Precautions - ManualTransmission.............................................174
Auto-Start-Stop Precautions -Automatic Transmission.......................174
Switching Auto-Start-Stop On and Off.........................................................................174
Stopping the Engine - ManualTransmission.............................................174
Stopping the Engine - AutomaticTransmission.............................................175
Restarting the Engine - ManualTransmission.............................................175
Restarting the Engine - AutomaticTransmission.............................................176
Auto-Start-Stop Indicators......................176
Auto-Start-Stop – Troubleshooting.........................................................................176
Fuel and Refueling
Fuel and Refueling Precautions.............179
Fuel Quality...................................................180
Locating the Fuel Filler Funnel...............180
Running Out of Fuel....................................181
Refueling.........................................................182
Fuel Tank Capacity.....................................183
Fuel and Refueling – Troubleshooting.........................................................................184
Catalytic Converter
What Is the Catalytic Converter.............185
Catalytic Converter Precautions............185
Catalytic Converter – Troubleshooting.........................................................................185
Manual Transmission
Manual Transmission Precautions.......186
Shifting Into Reverse..................................186
Crawler Gear.................................................186
Recommended Shift Speeds..................187
Checking the Manual Transmission FluidLevel.............................................................188
Checking the Clutch Fluid Level............188
Manual Transmission Fluid Capacity andSpecification.............................................188
Clutch Fluid Capacity and Specification........................................................................188
Manual Transmission – Troubleshooting........................................................................189
Automatic Transmission
Automatic Transmission Precautions........................................................................190
Automatic Transmission Positions......190
Shifting Your Vehicle Into Gear...............191
Automatic Transmission PositionIndicators.....................................................191
Manually Shifting Gears.............................191
Brake Shift Interlock...................................193
Automatic Transmission AudibleWarnings....................................................194
Four-Wheel Drive
How Does Four-Wheel Drive Work - 4x4with Part Time Engagement...............195
How Does Four-Wheel Drive Work -Advanced 4x4 with 4A Mode.............195
Four-Wheel Drive Precautions...............195
Four-Wheel Drive Limitations................196
Switching Four-Wheel Drive On and Off.........................................................................197
Selecting a Four-Wheel Drive Mode - 4x4with Part Time Engagement...............197
Selecting a Four-Wheel Drive Mode -Advanced 4x4 with 4A Mode.............198
Four-Wheel Drive Modes.........................199
Four-Wheel Drive Indicators..................200
Transfer Case Fluid Capacity andSpecification............................................200
Four-Wheel Drive – Troubleshooting.......................................................................200
6
2023 Bronco (TG1) Canada/United States of America, enUSA, Edition date: 202208, DOMTable of Contents

Storing Your Vehicle
Preparing Your Vehicle for Storage......428
Removing Your Vehicle From Storage........................................................................429
Wheel and Tire Information
Locating the Tire label..............................430
Department of Transportation UniformTire Quality Grades...............................430
Information on the Tire Sidewall...........431
Glossary of Tire Terminology.................436
Tire Replacement Requirements..........437
Using Snow Chains....................................439
Tire Care
Checking the Tire Pressures....................441
Inflating the Tires.........................................441
Inspecting the Tire for Wear...................442
Inspecting the Tire for Damage............442
Inspecting the Wheel Valve Stems......443
Tire Rotation.................................................443
Tire Pressure MonitoringSystem
What Is the Tire Pressure MonitoringSystem.......................................................445
Tire Pressure Monitoring SystemOverview....................................................445
Tire Pressure Monitoring SystemPrecautions..............................................446
Tire Pressure Monitoring SystemLimitations................................................446
Viewing the Tire Pressures......................447
Tire Pressure Monitoring System –Troubleshooting......................................447
Changing a Road Wheel
Changing a Flat Tire - Excluding: Raptor.......................................................................449
Changing a Flat Tire - Raptor.................453
Wheel Nuts - Excluding: Raptor...........458
Wheel Nuts - Raptor.................................459
Capacities and Specifications
Engine Specifications - 2.3L EcoBoost™.........................................................................461
Engine Specifications - 2.7L EcoBoost™........................................................................462
Engine Specifications - 3.0L EcoBoost™........................................................................463
Motorcraft Parts - 2.3L EcoBoost™.....464
Motorcraft Parts - 2.7L EcoBoost™.....465
Motorcraft Parts - 3.0L EcoBoost™....466
Engine Oil Capacity and Specification -2.3L EcoBoost™.....................................467
Engine Oil Capacity and Specification -2.7L EcoBoost™.....................................468
Engine Oil Capacity and Specification -3.0L EcoBoost™.....................................470
Cooling System Capacity andSpecification - 2.3L EcoBoost™.......472
Cooling System Capacity andSpecification - 2.7L EcoBoost™/3.0LEcoBoost™...............................................473
Fuel Tank Capacity.....................................474
Air Conditioning System Capacity andSpecification - 3.0L EcoBoost™......475
Air Conditioning System Capacity andSpecification - 2.3L EcoBoost™/2.7LEcoBoost™...............................................476
Washer Fluid Specification.....................476
Manual Transmission Fluid Capacity andSpecification.............................................477
Clutch Fluid Capacity and Specification........................................................................478
Automatic Transmission Fluid Capacityand Specification...................................478
Brake Fluid Specification.........................478
Transfer Case Fluid Capacity andSpecification............................................479
Front Axle Fluid Capacity andSpecification - Excluding: Raptor.....480
Front Axle Fluid Capacity andSpecification - Raptor..........................480
12
2023 Bronco (TG1) Canada/United States of America, enUSA, Edition date: 202208, DOMTable of Contents

HOW DOES FOUR-WHEEL
DRIVE WORK - 4X4 WITH PART
TIME ENGAGEMENT
Bronco 4x4 Systems
4x4 With Part Time Engagement (If
Equipped)
This system offers the driver two-wheeldrive high, four-wheel drive high, andfour-wheel drive low as available modesof operation. When you select eitherfour-wheel drive high or four-wheel drivelow, the system provides mechanicallylocked four-wheel drive power to both thefront and rear wheels for use in off-road orslippery conditions such as deep snow,sand or mud. Selecting four-wheel drivelow also provides additional gearing forincreased torque multiplication forconditions like deep sand, steep slopes, orpulling heavy objects.
Additionally, the system is capable ofrecreational flat towing by putting thetransfer case into neutral (N). SeeRecreationally Towing Your Vehicle(page 338).
HOW DOES FOUR-WHEEL
DRIVE WORK - ADVANCED 4X4
WITH 4A MODE (IF EQUIPPED)
Bronco 4x4 Systems
Advanced 4x4 With Automatic OnDemand Engagement
This system monitors various vehiclesensory inputs to provide an increasedlevel of performance. This system offerstwo-wheel drive high, four-wheel driveauto, four-wheel drive high, and four-wheeldrive low as available modes of operation.When you select four-wheel drive auto, thesystem continuously varies power to the
front wheels for optimum performance forall on-road conditions. When you selecteither four-wheel drive high or four-wheeldrive low, the system provideselectronically locked power to the frontand rear wheels for use in off-road orslippery conditions such as deep snow,sand or mud. Selecting four-wheel drivelow also provides additional gearing forincreased torque multiplication forconditions like deep sand, steep slopes, orpulling heavy objects.
Additionally, the system is capable ofrecreational flat towing by putting thetransfer case into neutral (N). SeeRecreationally Towing Your Vehicle(page 338).
FOUR-WHEEL DRIVE
PRECAUTIONS
WARNING: Do not becomeoverconfident in the ability of four-wheeldrive vehicles. Although a four-wheeldrive vehicle may accelerate better thana two-wheel drive vehicle in low tractionsituations, it won't stop any faster thantwo-wheel drive vehicles. Always driveat a safe speed.
WARNING: Vehicles with a highercenter of gravity (utility and four-wheeldrive vehicles) handle differently thanvehicles with a lower center of gravity(passenger cars). Avoid sharp turns,excessive speed and abrupt steering inthese vehicles. Failure to drive cautiouslyincreases the risk of losing control of yourvehicle, vehicle rollover, personal injuryand death.
195
2023 Bronco (TG1) Canada/United States of America, enUSA, Edition date: 202208, DOMFour-Wheel Drive

FOUR-WHEEL DRIVE
LIMITATIONS
Do not use four-wheel drive high orfour-wheel drive low mode on dry, hardsurfaced roads. Doing so can produceexcessive noise, increase tire wear and candamage driveline components. Four-wheeldrive high or four-wheel drive low mode isonly for use on consistently slippery orloose surfaces. Use of four-wheel drive lowmode on these surfaces could producesome noise, such as occasional clunks, butshould not damage driveline components.
For vehicles with an electronicshift-on-the-fly transfer case, the drivelinecould become mechanically blocked whenattempting to shift out of a four-wheeldrive mode on dry, hard surfaced roads.
Note:When your vehicle comes with the4x4 part-time selectable engagementtransfer case and you are transitioning fromconsistently loose or slippery surfaces, besure the four-wheel drive system is notmechanically blocked once you are on dry,hard surfaced roads in two-wheel drive high.
Note: In certain scenarios, where thefour-wheel drive system has difficultyengaging, a To Engage 4x4 Slow to 3 MPHor To Engage 4x4 Slow to 5 km/hmessage could appear in the instrumentcluster. You can also see this messagewhen engaging the four-wheel drive systemin extreme cold climates at the beginningof the drive cycle. Once the driveline warmsup, shifting to four-wheel drive can resumeas normal.
Operating Four-Wheel Drive witha Spare or Mismatched Tires
On four-wheel drive vehicles, the size ofthe spare tire can affect the four-wheeldrive system.
If there is a significant difference betweenthe size of the spare tire and the remainingtires, you could have limited four-wheeldrive functionality, added noise, discomfortand driveline damage.
Due to normal tire wear, your spare tire isnot necessarily the same size as youron-road tires, which makes your spare tirea dissimilar size. Use the spare tire on alimited basis only.
When driving with a dissimilar wheel andtire assembly do not:
•Exceed 50 mph (80 km/h) whenoperating in a four-wheel drive mode.
•Select a four-wheel drive mode unlessthe vehicle is stationary.
•Use a four-wheel drive mode on drypavement.
You could have limited four-wheel drivefunctionality when driving with a dissimilarwheel and tire assembly, especially whendriving in a mechanically locked four-wheeldrive mode. You can experience thefollowing:
•Additional noise from the transfer caseor other drive components.
•Difficulty shifting in and out of amechanically locked four-wheel drivemode.
•Driveline component damage.
Mechanical Shift Blocking
On vehicles with an electronicshift-on-the-fly transfer case, the transfercase distributes torque to the front wheelsby mechanically interlocking the front andrear driveshafts together. Various externalfactors can affect shifting performance ofthis type of system including, but notlimited to:
•Vehicle acceleration.
•Dissimilar tire sizes.
•High steering input.
196
2023 Bronco (TG1) Canada/United States of America, enUSA, Edition date: 202208, DOMFour-Wheel Drive

For vehicles with an electronicshift-on-the-fly transfer case, whenshifting into two-wheel drive high on dry,hard surfaced roads, we recommend thatyou follow the following procedure toreduce the likelihood of a mechanical shiftblock:
1.When driving straight, come to acomplete stop on a flat, horizontalsurface.
2.For vehicles with an automatictransmission, shift into park (P). Forvehicles with a manual transmission,press the clutch.
3.Select 2H and wait for the 2H LED tobecome solid.
4.For vehicles with an automatictransmission, shift into reverse (R). Forvehicles with a manual transmission,select reverse (R) and release theclutch. Let the vehicle roll backward upto 3 ft (1 m) and press the brake.
5.For vehicles with an automatictransmission, shift into drive (D). Forvehicles with a manual transmission,press the clutch in again, select aforward gear and release the clutch.Let the vehicle roll forward up to 3 ft(1 m).
If the system is mechanically blocked, oneor more of the following actions can relievethe mechanical shift block:
•Momentary acceleration.
•Momentary braking.
•Bringing the vehicle to a stop.
•Shifting the transmission to neutral andback to drive.
•Shifting the transmission to reverseand back to drive.
•Driving the vehicle around a tight turnat a slow speed.
SWITCHING FOUR-WHEEL
DRIVE ON AND OFF
A vehicle that comes with four-wheel drive,when selected, has the ability to use allfour wheels to power itself. This increasestraction, which may enable you to safelydrive over terrain and road conditions thata conventional two-wheel drive vehiclecannot.
On some four-wheel drive models, theinitial shift from two-wheel drive tofour-wheel drive while the vehicle ismoving can cause a momentary clunk andratcheting sound. These sounds are normalas the front drivetrain comes up to speedand are not cause for concern.
SELECTING A FOUR-WHEEL
DRIVE MODE - 4X4 WITH PART
TIME ENGAGEMENT
To select a four-wheel drive mode, pushthe button.
197
2023 Bronco (TG1) Canada/United States of America, enUSA, Edition date: 202208, DOMFour-Wheel DriveE345849

•2H - Two-wheel drive high.
•4H - Four-wheel drive high. SeeFour-Wheel Drive High (page 199).
•4L - Four-wheel drive low. SeeFour-Wheel Drive Low (page 200).
Note:Do not perform this operation whenyou have cruise control or trail controlselected and active. The system may notshift as expected.
Note:Do not perform this operation if therear wheels are slipping or when applyingthe accelerator pedal or when driving in atight turn.
Note:Momentarily releasing the acceleratorpedal when a shift in progress messagedisplays can improve engagement ordisengagement performance.
Note:When the light is solid, the systemhas achieved the desired four-wheel drivemode. When a selected four-wheel drivemode light is blinking, the system isattempting to shift to that specificfour-wheel drive mode.
Note:When you achieve recreationaltowing, all lights are off and Neutral TowEnabled Leave Transmission in Neutralappears in the instrument cluster display.
Shifting to or from Four-WheelDrive Low
1.Bring your vehicle to a stop.
2.For vehicles with an automatictransmission, place in neutral (N). Forvehicles with a manual transmission,fully press the clutch pedal.
3.Push 4L on the four-wheel drive modeselector.
Note: A 4x4 Shift in Progress messageappears in the instrument cluster displayindicating the shift is in progress. If any ofthe previous shift conditions are not met,the shift should not occur and theinstrument cluster display can guide youthrough the proper shifting procedures.
Note: If Shift Delayed Drive Forwarddisplays in the instrument cluster display,place the transmission in a forward gear,move your vehicle forward approximately5 ft (1.5 m), and shift the transmission backto neutral (N) to allow the transfer case tocomplete the range shift.
SELECTING A FOUR-WHEEL
DRIVE MODE - ADVANCED 4X4
WITH 4A MODE
To select a four-wheel drive mode, pushthe button.
•2H - Two-wheel drive high.
•4A - Four-wheel drive Auto. SeeFour-Wheel Drive Auto (page 199).
198
2023 Bronco (TG1) Canada/United States of America, enUSA, Edition date: 202208, DOMFour-Wheel DriveE324543

•4H - Four-wheel drive high. SeeFour-Wheel Drive High (page 199).
•4L - Four-wheel drive low. SeeFour-Wheel Drive Low (page 200).
Note:Do not perform this operation whenyou have cruise control or trail controlselected and active. The system may notshift as expected.
Note: Do not perform this operation if therear wheels are slipping or when applyingthe accelerator pedal.
Note:When the light is solid, the systemhas achieved the desired four-wheel drivemode. When a selected four-wheel drivemode LED is blinking, the system isattempting to shift to that specificfour-wheel drive mode.
Note:When all lights are blinking, have yourvehicle serviced as soon as possible.
Note:When you achieve recreationaltowing, all lights are off and Neutral TowEnabled Leave Transmission in Neutralappears in the instrument cluster display.
Shifting to or from Four-WheelDrive Low
1.Bring your vehicle to a stop.
2.For vehicles with an automatictransmission, place in neutral (N). Forvehicles with a manual transmission,fully press the clutch pedal.
3.Push 4L on the four-wheel drive modeselector.
Note: A 4x4 Shift in Progress messageappears in the instrument cluster displayindicating the shift is in progress. If any ofthe previous shift conditions are not met,the shift should not occur and theinstrument cluster display can guide youthrough the proper shifting procedures.
Note: If Shift Delayed Drive Forwarddisplays in the instrument cluster display,place the transmission in a forward gear,move your vehicle forward approximately5 ft (1.5 m), and shift the transmission backto neutral (N) to allow the transfer case tocomplete the range shift.
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 SeeG.O.A.T. Mode Control (page 260).
FOUR-WHEEL DRIVE AUTO (If
Equipped)
Four-wheel drive auto provideselectronically controlled four-wheel drivepower to both the front and rear wheels,as required, for increased traction in varyingon-road conditions. The four-wheel driveauto tuning varies based on selected DriveMode. See Selecting a Four-Wheel DriveMode (page 197).
Note:Four-wheel drive auto can turn on oroff automatically based on Drive Modeselection. See Selecting a Four-WheelDrive Mode (page 197).
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.
199
2023 Bronco (TG1) Canada/United States of America, enUSA, Edition date: 202208, DOMFour-Wheel Drive

Note:Four-wheel drive high can turn on oroff automatically based on Drive Modeselection.
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.
FOUR-WHEEL DRIVE
INDICATORS
Two-wheel Drive High
Illuminates briefly whentwo-wheel drive high is selected.
Four-wheel Drive Auto (If Equipped)
Illuminates when four-wheeldrive auto is selected.
Four-wheel Drive High
Illuminates when four-wheeldrive high is selected.
Four-wheel Drive Low
Illuminates when four-wheeldrive low is selected.
TRANSFER CASE FLUID
CAPACITY AND
SPECIFICATION
See Transfer Case Fluid Capacity andSpecification (page 479).
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.
200
2023 Bronco (TG1) Canada/United States of America, enUSA, Edition date: 202208, DOMFour-Wheel DriveE181778 E181781 E181779 E181780