engine FORD BRONCO 2023 Service Manual

WHAT IS THE CATALYTIC
CONVERTER
The catalytic converter is part of yourvehicle's emissions system and filtersharmful pollutants from the exhaust gas.
CATALYTIC CONVERTER
PRECAUTIONS
WARNING: Do not park, idle ordrive your vehicle on dry grass or otherdry ground cover. The emission systemheats up the engine compartment andexhaust system, creating the risk of fire.
WARNING: The normal operatingtemperature of the exhaust system isvery high. Never work around or attemptto repair any part of the exhaust systemuntil it has cooled. Use special care whenworking around the catalytic converter.The catalytic converter heats up to a veryhigh temperature after only a shortperiod of engine operation and stays hotafter the engine is switched off.
WARNING: Exhaust leaks mayresult in entry of harmful and potentiallylethal fumes into the passengercompartment. If you smell exhaustfumes inside your vehicle, have yourvehicle inspected immediately. Do notdrive if you smell exhaust fumes.
To avoid damaging the catalytic converter:
•Do not crank the engine for more than10 seconds at a time.
•Do not run the engine with a spark pluglead disconnected.
•Do not push-start or tow-start yourvehicle. Use booster cables. See JumpStarting the Vehicle (page 330).
•Use the correct fuel. See Fuel andRefueling (page 179).
•Do not switch the ignition off when yourvehicle is moving.
•Avoid running out of fuel.
•Have the items listed in scheduledmaintenance information performedaccording to the specified schedule.
Note:Do not make any unauthorizedchanges to your vehicle or engine. By law,vehicle owners and anyone whomanufactures, repairs, or services a fleet ofvehicles are not permitted to intentionallyremove an emission control device orprevent it from working.
CATALYTIC CONVERTER –
TROUBLESHOOTING
CATALYTIC CONVERTER –WARNING LAMPS
Your vehicle has an on-board diagnosticssystem that monitors the emission controlsystem. If any of the following warninglamps illuminate, this may indicate thatthe on-board diagnostics system hasdetected an emission control systemmalfunction.
Continuing to drive your vehicle may causereduced power or the engine to stop.Failure to respond to a warning lamp maycause damage that your vehicle Warrantymay not cover. Have your vehicle checkedas soon as possible.
185
2023 Bronco (TG1) Canada/United States of America, enUSA, Edition date: 202208, DOMCatalytic ConverterE103308 E67021 E67028

Note:You can only move the gearshift leverto crawler (C) by raising the collar belowthe gearshift knob up before shifting tocrawler. This is a lockout feature whichprotects the transmission from accidentallyengaging crawler (C) when intending toselect second (2).
If crawler (C) is not fully engaged press theclutch pedal down, return the gearshift tothe neutral position, then release the clutchpedal. Re-apply the clutch pedal, then liftthe gearshift collar and shift into crawler(C) again.
The crawler gear enables an easier start inunusual conditions or terrain. You shouldchange up to first (1) when possible andrefrain from using crawler (C) at highengine speeds as transmission damagecould result. See Manual TransmissionPrecautions (page 186).
In normal use, make sure your vehicle isstationary before selecting crawler (C) asit is primarily a starting gear. If you changedown to crawler (C) from first (1) while thevehicle is moving, make sure the enginespeed is below 1500 rpm, and that theclutch pedal is fully pressed for a smoothtransition to crawler gear.
RECOMMENDED SHIFT
SPEEDS
Recommended Shift Speeds
For best fuel efficiency when driving yourvehicle, shift to the next gear by 3000RPM.
Shifting at a higher RPM such as3000-6000 RPM can increase theperformance capabilities of the vehicle.However, higher engine and transmissionspeeds can increase wear and reduce fueleconomy.
When downshifting your vehicle, alwaysshift at the lowest engine RPM possible tomatch your driving conditions. This isusually under 2000 RPM for all forwardgears, except for downshifting into thecrawler (C) gear which you should dobelow 1500 RPM. See ManualTransmission Precautions (page 186).
Note:Always fully depress the clutch pedalbetween gear shifts.
187
2023 Bronco (TG1) Canada/United States of America, enUSA, Edition date: 202208, DOMManual TransmissionE99067

MANUAL TRANSMISSION –
TROUBLESHOOTING
MANUAL TRANSMISSION –FREQUENTLY ASKED QUESTIONS
Using Crawler Gear
When shifting into crawler (C), make sureyour vehicle is completely stationary andthat the engine speed is below 1500 RPM.
Shift out of crawler (C) as soon aspossible. Prolonged use of crawler (C) cancause transmission wear and increasedfuel consumption.
189
2023 Bronco (TG1) Canada/United States of America, enUSA, Edition date: 202208, DOMManual TransmissionE322877

AUTOMATIC TRANSMISSION
PRECAUTIONS
WARNING: Apply the parkingbrake, shift into park (P), switch theignition off and remove the key beforeyou leave your vehicle. Failure to followthis instruction could result in personalinjury or death.
WARNING: When your vehicle isstationary, keep the brake pedal fullypressed when shifting gears. Failure tofollow this instruction could result inpersonal injury, death or propertydamage.
WARNING: Do not apply the brakepedal and accelerator pedalsimultaneously. Applying both pedalssimultaneously for more than a fewseconds will limit engine performance,which may result in difficulty maintainingspeed in traffic and could lead to seriousinjury.
AUTOMATIC TRANSMISSION
POSITIONS
PARK (P)
WARNING: Shift into park (P) onlywhen your vehicle is stationary.
In park (P) power is not transmitted to thedriven wheels.
Note:A tone sounds if you attempt to exityour vehicle without the vehicle in park (P).
Note:Your vehicle may not shift out of park(P) if the 12 V battery has run out of charge.
Note:Your vehicle may not shift out of park(P) if a fuse is blown.
Note:Your vehicle may not shift out of park(P) unless the key or remote control is insideyour vehicle.
Note:The electronic parking brake couldapply when you power your vehicle on withthe selector in park (P).
Note:The electronic parking brake couldapply if you shift to park (P) without fullypressing the brake pedal.
Note:The electronic parking brake couldapply if you shift to park (P) on a slope.
Note:Do not manually release the parkingbrake when the selector is in park (P). SeeAutomatically Releasing the ElectricParking Brake (page 213).
REVERSE (R)
WARNING: Shift into reverse (R)only when your vehicle is stationary.
In reverse (R) power is transmitted to thedriven wheels.
NEUTRAL (N)
WARNING: In neutral (N) yourvehicle is free to roll.
In neutral (N) power is not transmitted tothe driven wheels.
DRIVE (D)
In drive (D) power is transmitted to thedriven wheels.
190
2023 Bronco (TG1) Canada/United States of America, enUSA, Edition date: 202208, DOMAutomatic Transmission (If Equipped)

MANUAL (M)
In manual (M) you can select a specificgear. See Manually Shifting Gears (page191).
Note:We recommend using this mode fordriving on hilly or mountainous roads orwhen towing a trailer. See Towing a Trailer(page 307).
SPORT (S)
In sport (S) your vehicle holds gears longer.
Note:We recommend using this mode fora sportier feel or when driving on hilly ormountainous roads.
SHIFTING YOUR VEHICLE INTO
GEAR
1.Fully press down on the brake pedal.
2.Press the front button on the shifterand move the gearshift lever into thedesired gear.
3.When you finish driving, come to acomplete stop.
4.Press the front button on the shifter,move the gearshift lever and securelylatch it in park (P).
AUTOMATIC TRANSMISSION
POSITION INDICATORS
The instrument cluster displays the currentposition.
Note:The position could illuminate on thetransmission selector.
MANUALLY SHIFTING GEARS
SHIFTING USING THE PADDLESHIFTERS - RAPTOR
The instrument cluster displays the currentgear. The current gear flashes when yourvehicle cannot shift into the requestedgear. Your vehicle will not shift if therequested gear raises or lowers the enginespeed beyond the limit.
Your vehicle could shift when you fullypress the accelerator or brake pedal.
Note:Prolonged driving with high enginespeed could cause vehicle damage notcovered by the vehicle warranty.
Note:Drive modes could affect when thevehicle shifts into the requested gear.
191
2023 Bronco (TG1) Canada/United States of America, enUSA, Edition date: 202208, DOMAutomatic Transmission (If Equipped)E324063 E341776

Manually Shifting Gears in Drive (D)
Use this feature to temporarily changegears.
Note:We recommend using this feature forengine braking or driving on hilly ormountainous roads.
•Pull any paddle to switch the featureon.
•Pull the right (+) paddle to upshift.
•Pull the left (-) paddle to downshift.
•Hold the (+) paddle for a few secondsto switch the feature off.
Note:The feature switches off after a shortperiod of time if you do not pull eitherpaddle.
Manually Shifting Gears in Manual (M)
Use this feature to select a specific gear.
Note:We recommend using this feature forengine braking, driving on hilly ormountainous roads, or when towing a trailer.See Towing a Trailer (page 307).
•Shift to manual (M) to switch thefeature on.
•Pull the right (+) paddle to upshift.
•Pull the left (-) paddle to downshift.
•Shift to drive (D) to switch the featureoff.
SHIFTING USING THE BUTTONSON THE SELECTOR LEVER
The instrument cluster displays the currentgear. The current gear flashes when yourvehicle cannot shift into the requestedgear. Your vehicle will not shift if therequested gear raises or lowers the enginespeed beyond the limit.
Your vehicle could shift when you fullypress the accelerator or brake pedal.
Note:Prolonged driving with high enginespeed could cause vehicle damage notcovered by the vehicle warranty.
Note:Drive modes could affect when thevehicle shifts into the requested gear.
Manually Shifting Gears in Drive(D)
Use this feature to temporarily changegears.
Note:We recommend using this feature forengine braking or driving on hilly ormountainous roads.
•Press any button to switch the featureon.
•Press the upper (+) button to upshift.
192
2023 Bronco (TG1) Canada/United States of America, enUSA, Edition date: 202208, DOMAutomatic Transmission (If Equipped)E144821 E324063

•Press the lower (-) button todownshift.
•Hold the (+) button for a few secondsto switch the feature off.
Note:The feature switches off after a shortperiod of time if neither button is pressed.
Manually Shifting Gears in Sport(S)
Use this feature to select a specific gear.
Note:We recommend using this feature forengine braking, driving on hilly ormountainous roads, or when towing a trailer.See Towing a Trailer (page 307).
•Press any button to switch the featureon.
•Press the upper (+) button to upshift.
•Press the lower (-) button todownshift.
•Hold the (+) button for a few secondsto switch the feature off.
Manually Shifting Gears in Manual(M)
Use this feature to select a specific gear.
Note:We recommend using this feature forengine braking, driving on hilly ormountainous roads, or when towing a trailer.See Towing a Trailer (page 307).
•Shift to manual (M) to switch thefeature on.
•Press the upper (+) button to upshift.
•Press the lower (-) button todownshift.
•Shift to drive (D) to switch the featureoff.
BRAKE SHIFT INTERLOCK
WHAT IS BRAKE SHIFTINTERLOCK
Brake shift interlock allows you to shiftyour vehicle out of park (P) in the event ofan electrical malfunction or emergency.
BRAKE SHIFT INTERLOCKPRECAUTIONS
WARNING: Do not drive yourvehicle until you verify that thestoplamps are working.
WARNING: When doing thisprocedure, you need to take thetransmission out of park (P) whichmeans your vehicle can roll freely. Toavoid unwanted vehicle movement,apply the parking brake prior to doingthis procedure. Use wheel chocks ifappropriate.
WARNING: If the parking brake isfully released, but the brake warninglamp remains illuminated, the brakesmay not be working properly. Have yourvehicle checked as soon as possible.
193
2023 Bronco (TG1) Canada/United States of America, enUSA, Edition date: 202208, DOMAutomatic Transmission (If Equipped)

BRAKE PRECAUTIONS
Wet brakes result in reduced brakingefficiency. Gently press the brake pedal afew times when leaving a car wash ordriving from standing water to dry thebrakes.
Note:Depending on applicable laws andregulations in the country where your vehiclewas originally built, the stoplamps couldflash during heavy braking. The hazardwarning flashers could also turn on whenyour vehicle comes to a stop.
ANTI-LOCK BRAKING SYSTEM
ANTI-LOCK BRAKING SYSTEMLIMITATIONS
The anti-lock braking system does noteliminate the risk of crash 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.
Note: If the system activates, the brakepedal could pulse and travel further.Maintain pressure on the brake pedal.
BRAKE OVER ACCELERATOR
In the event the accelerator pedalbecomes stuck or entrapped, apply steadyand firm pressure to the brake pedal toslow the vehicle and reduce engine power.If you experience this condition, apply thebrakes and bring your vehicle to a safestop. Move the transmission to park (P),switch the engine off and apply the parkingbrake. Inspect the accelerator pedal forany interference. If none are found and thecondition persists, have your vehicle towedto the nearest authorized dealer.
LOCATING THE BRAKE FLUID
RESERVOIR - 2.3L
ECOBOOST™
•See Under Hood Overview (page 351).
LOCATING THE BRAKE FLUID
RESERVOIR - 2.7L
ECOBOOST™/3.0L
ECOBOOST™
•See Under Hood Overview (page 352).
CHECKING THE BRAKE FLUID
WARNING: Do not use any fluidother than the recommended brake fluidas this will reduce brake efficiency. Useof incorrect fluid could result in the lossof vehicle control, serious personal injuryor death.
WARNING: Only use brake fluidfrom a sealed container. Contaminationwith dirt, water, petroleum products orother materials may result in brakesystem damage or failure. Failure toadhere to this warning could result in theloss of vehicle control, serious personalinjury or death.
WARNING: Do not allow the fluidto touch your skin or eyes. If thishappens, rinse the affected areasimmediately with plenty of water andcontact your physician.
WARNING: The brake systemcould be affected if the brake fluid levelis below the MIN mark or above the MAXmark on the brake fluid reservoir.
209
2023 Bronco (TG1) Canada/United States of America, enUSA, Edition date: 202208, DOMBrakes

WHAT IS THE ELECTRIC
PARKING BRAKE
Electric Parking Brake
The electric parking brake is used to holdyour vehicle on slopes and flat roads.
APPLYING THE ELECTRIC
PARKING BRAKE
WARNING: Always fully apply theparking brake. Failure to follow thisinstruction could result in personal injuryor death.
WARNING: If you drive extendeddistances with the parking brake applied,you could cause damage to the brakesystem.
The switch is on the lower partof the instrument panel.
Pull the electric parking brake switch.
The red warning lamp flashes duringoperation and illuminates when the parkingbrake is applied.
Note:You can apply the electric parkingbrake when the ignition is off.
Note:The electric parking brake couldapply when the transmission selector is inpark (P). See Park (P) (page 190).
APPLYING THE ELECTRIC
PARKING BRAKE IN AN
EMERGENCY
You can use the electric parking brake toslow or stop your vehicle in an emergency.
Pull and hold the electric parking brakeswitch.
The electric parking brake continues toslow your vehicle down unless you releasethe switch.
The red warning lamp illuminates, a tonesounds and the stoplamps turn on whenyou use the electric parking brake in anemergency.
Note:Do not apply the electric parkingbrake when your vehicle is moving, exceptin an emergency. If you repeatedly use theelectric parking brake to slow or stop yourvehicle, you could cause damage to thebrake system.
MANUALLY RELEASING THE
ELECTRIC PARKING BRAKE
1.Switch the ignition on.
2.Apply and hold the brake pedal.
3.Push the electric parking brake switch.
The red warning lamp turns off.
Pulling Away on a Hill When Towing aTrailer
1.Apply and hold the brake pedal.
2.Pull and hold the electric parking brakeswitch.
3.Shift the vehicle into gear.
4.Apply the accelerator pedal until theengine has developed sufficient torqueto prevent your vehicle from rollingdown the hill.
5.Release the switch and pull away in anormal manner.
AUTOMATICALLY RELEASING
THE ELECTRIC PARKING
BRAKE
Note:If the driver door is removed, bucklethe driver seatbelt and proceed to step 2.
213
2023 Bronco (TG1) Canada/United States of America, enUSA, Edition date: 202208, DOMElectric Parking BrakeE267156

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.
217
2023 Bronco (TG1) Canada/United States of America, enUSA, Edition date: 202208, DOMTraction ControlE348750 E138639 E130458