2023 FORD SUPER DUTY brake fluid

Four-Wheel Drive Precautions..............239
Four-Wheel Drive Limitations................239
Switching Four-Wheel Drive On and Off........................................................................240
Selecting a Four-Wheel Drive Mode.....241
Four-Wheel Drive Modes.........................242
Four-Wheel Drive Indicators...................242
Transfer Case Fluid Capacity andSpecification............................................242
Four-Wheel Drive – Troubleshooting........................................................................242
Electronic Locking Differential
What Is the Electronic LockingDifferential................................................245
How Does the Electronic LockingDifferential Work.....................................245
Electronic Locking DifferentialPrecautions...............................................245
Switching the Electronic LockingDifferential On and Off - 4x4.............245
Switching the Electronic LockingDifferential On and Off - 4x2..............247
Electronic Locking Differential Indicators........................................................................247
Electronic Locking Differential –Troubleshooting.....................................248
Brakes
Brake Precautions......................................249
Anti-Lock Braking System......................249
Brake Over Accelerator.............................249
Locating the Brake Fluid Reservoir......249
Checking the Brake Fluid.........................249
Brake Fluid Specification.........................250
Brakes – Troubleshooting.......................250
Electric Parking Brake
What Is the Electric Parking Brake.......253
Applying the Electric Parking Brake......253
Applying the Electric Parking Brake in anEmergency................................................253
Manually Releasing the Electric ParkingBrake............................................................253
Automatically Releasing the ElectricParking Brake...........................................254
Electric Parking Brake Audible Warning........................................................................254
Releasing the Electric Parking Brake ifthe Vehicle Battery Has Run Out ofCharge........................................................254
Electric Parking Brake – Troubleshooting........................................................................254
Diesel Engine Exhaust Brake
Diesel Engine Exhaust Brake –Precautions...............................................256
Using the Diesel Engine Exhaust Brake........................................................................256
Diesel Engine Exhaust Brake Indicators........................................................................257
Diesel Engine Exhaust Brake Gauge.....257
Diesel Engine Exhaust Brake –Troubleshooting......................................257
Diesel Engine Exhaust Brake Videos........................................................................257
Reverse Brake Assist
What Is Reverse Brake Assist.................258
How Does Reverse Brake Assist Work........................................................................258
Reverse Brake Assist Precautions........258
Switching Reverse Brake Assist On andOff................................................................259
Overriding Reverse Brake Assist...........259
Reverse Brake Assist Indicators............259
Reverse Brake Assist – Troubleshooting.......................................................................260
Cross Traffic Braking
What Is Cross Traffic Braking.................262
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2023 Super Duty (TFH) Canada/United States of America, enUSA, Edition date: 202211, DOMTable of Contents

Wheel and Tire Information
Locating the Tire label..............................478
Department of Transportation UniformTire Quality Grades................................478
Information on the Tire Sidewall..........479
Glossary of Tire Terminology.................484
Tire Replacement Requirements.........485
Using Snow Chains....................................487
Tire Care
Checking the Tire Pressures..................490
Inflating the Tires.......................................490
Inspecting the Tire for Wear...................494
Inspecting the Tire for Damage............494
Inspecting the Wheel Valve Stems......498
Tire Rotation................................................498
Tire Pressure MonitoringSystem
What Is the Tire Pressure MonitoringSystem........................................................501
Tire Pressure Monitoring SystemOverview.....................................................501
Tire Pressure Monitoring SystemPrecautions..............................................502
Tire Pressure Monitoring SystemLimitations................................................502
Viewing the Tire Pressures.....................503
Resetting Tire Pressure MonitoringSystem.......................................................503
Tire Pressure Monitoring System –Troubleshooting.....................................506
Tire Pressure Monitoring System Videos.......................................................................508
Changing a Road Wheel
Changing a Flat Tire..................................509
Wheel Nuts....................................................519
Capacities and Specifications
Engine Specifications - 6.7L Diesel......520
Engine Specifications - 6.8L, Gasoline.........................................................................521
Engine Specifications - 7.3L, Gasoline........................................................................522
Motorcraft Parts - 6.7L Diesel................523
Motorcraft Parts - 6.8L, Gasoline.........524
Motorcraft Parts - 7.3L, Gasoline..........525
Engine Oil Capacity and Specification -6.7L Diesel.................................................526
Engine Oil Capacity and Specification -6.8L, Gasoline..........................................528
Engine Oil Capacity and Specification -7.3L, Gasoline...........................................530
Cooling System Capacity andSpecification - 6.7L Diesel...................532
Cooling System Capacity andSpecification - 6.8L, Gasoline............533
Cooling System Capacity andSpecification - 7.3L, Gasoline.............534
Fuel Tank Capacity - Diesel....................534
Fuel Tank Capacity - Gasoline...............535
Air Conditioning System Capacity andSpecification............................................536
Washer Fluid Specification.....................536
Diesel Exhaust Fluid Capacity andSpecification.............................................537
Automatic Transmission Fluid Capacityand Specification - Diesel...................538
Automatic Transmission Fluid Capacityand Specification - Gasoline.............538
Brake Fluid Specification.........................539
Transfer Case Fluid Capacity andSpecification............................................540
Front Axle Fluid Capacity andSpecification............................................540
Rear Axle Fluid Capacity andSpecification............................................542
Hydraulic Power Steering Fluid Capacityand Specification...................................546
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2023 Super Duty (TFH) Canada/United States of America, enUSA, Edition date: 202211, DOMTable of Contents

SYMBOLS USED ON YOUR
VEHICLE
These are some of the symbols you maysee on your vehicle.
Airbag
Air conditioning system
Air conditioning system lubricanttype
Anti-lock braking system
Avoid smoking, flames or sparks
Battery
Battery acid
Blower motor
Brake fluid - non petroleumbased
Brake system
Brake system
Cabin air filter
Check fuel cap
Child safety door lock or unlock
Child seat lower anchor
Child seat tether anchor
Cruise control
Do not open when hot
Electric Parking brake
Engine air filter
Engine coolant
Engine coolant temperature
Engine oil
Explosive gas
Fan warning
Fasten seatbelt
Flammable
Front fog lamps
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2023 Super Duty (TFH) Canada/United States of America, enUSA, Edition date: 202211, DOMSymbols GlossaryE67017 E162384 E231157 E67020 E139220 E67021 E139227 E139209 E67024 E270480 E139223 E139211 E141128 E332905 E139219 E139212 E103308 E67022 E139221 E139228 E71880 E231160

WHAT ARE THE INSTRUMENT
CLUSTER WARNING LAMPS
Warning lamps alert you to a vehiclecondition that could become serious.Some lamps illuminate when you startyour vehicle to make sure they work. If anylamps remain on after starting your vehicle,refer to the respective system warninglamp for further information.
INSTRUMENT CLUSTER
WARNING LAMPS
Depending on your vehicle options, somewarning lamps can appear different or notat all.
Anti-Lock Brake System
If it illuminates when you aredriving, this indicates amalfunction. Your vehiclecontinues to have normal braking withoutthe anti-lock brake system function. Haveyour vehicle checked as soon as possible.
Battery
It illuminates when you switchthe ignition on.
If it illuminates when the engineis running, this indicates your vehiclerequires service. Have your vehiclechecked as soon as possible.
Brake System
It illuminates when you apply theparking brake and the ignition ison. If it illuminates when yourvehicle is moving, make sure theparking brake is released. If theparking brake is released, thisindicates low brake fluid level or the brakesystem requires service. Have your vehiclechecked as soon as possible.
Note:Indicators may vary depending onregion.
Diesel Exhaust Fluid
Illuminates when the dieselexhaust fluid is low,contaminated or the systemrequires service. See Selective CatalyticReduction System (page 226).
Door Ajar
It illuminates when you switchthe ignition on and remains on ifany door is open.
Electric Parking Brake
It illuminates or flashes when theelectric parking brake requiresservice.
Note:Indicators may vary depending onregion.
Engine Coolant Temperature
If it illuminates, safely stop yourvehicle and switch the vehicleoff.
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2023 Super Duty (TFH) Canada/United States of America, enUSA, Edition date: 202211, DOMInstrument ClusterE67020 E67021 E270480 E67024 E163176 E249859 E325775 E103308

Before you start manual regeneration, dothe following:
•Make sure the parking brake is on.
•Shift into park (P) on stable, levelground.
•Park your vehicle outside of anystructure.
•Park your vehicle 10–15 ft (3–5 m)away from any obstructions and awayfrom materials that can easily combustor melt, for example paper, leaves,petroleum products, fuels, plastics andother dry organic material.
•Make sure there is a minimum of 1/8tank of fuel.
•Make sure all fluids are at proper levels.
DIESEL PARTICULATE FILTERMANUAL REGENERATIONLIMITATIONS
You cannot use manual regeneration untilthe diesel particulate filter load percentagehas reached 100% or Full. The dieselparticulate filter load percentagefluctuates up and down when driving yourvehicle due to active and passiveregenerations.
If your vehicle is operated with significantstationary operation, low speed drivecycles less than 25 mph (40 km/h), shortdrive cycles, drive time less than 15 minutesor the vehicle does not fully warm up,passive and active regeneration may notsufficiently clean the diesel particulatefilter system.
Aftermarket devices or modifications tothe exhaust system may reduce theeffectiveness of the exhaust system aswell as cause damage to the exhaustsystem or engine. This may also degradevehicle performance and could lead toengine damage that may not be coveredby the vehicle Warranty.
STARTING DIESEL PARTICULATEFILTER MANUAL REGENERATION
Start with your vehicle engine and when ithas reached the normal operatingtemperature, press the information displaycontrol button on the steering wheel. SeeInstrument Cluster Display (page 143).
If the diesel particulate filter is near or atsaturation, a message requestingpermission to initiate filter cleaningappears in the information display. SeeDiesel Particulate Filter – InformationMessages (page 224). Answer yes to thisprompt and then follow the next promptsregarding exhaust position required toinitiate manual regeneration. Be sure tounderstand each prompt. If you are notsure what is being asked by each prompt,contact an authorized dealer. The displayconfirms the operation has started andwhen it has finished. You can also drive toclean the filter.
When the system is at the pointof oversaturation, themalfunction indicator lampilluminates and a message appears in theinformation display. You cannot initiatefilter cleaning. You must have your vehiclechecked as soon as possible.
Once manual regeneration starts, enginespeed increases and the cooling fan speedincreases. You will hear a change in audiblesound due to engine speed and cooling fanspeed increases.
It is not necessary to open the hood on theengine compartment. Once manualregeneration completes, the engine speedreturns to normal idling. The exhaustsystem remains very hot for severalminutes even after regeneration iscomplete. Do not reposition the vehicleover materials that could burn until the
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2023 Super Duty (TFH) Canada/United States of America, enUSA, Edition date: 202211, DOMDiesel Particulate Filter (If Equipped)E67028

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
See Under Hood Overview (page 441).
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.
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2023 Super Duty (TFH) Canada/United States of America, enUSA, Edition date: 202211, DOMBrakes

1.Park your vehicle on a level surface.
2.Look at the brake fluid reservoir to seewhere the brake fluid level is relativeto the MIN and the MAX marks on thereservoir.
Note:To avoid fluid contamination, thereservoir cap must remain in place and fullytight, unless you are adding fluid.
Only use fluid that meets ourspecifications. See Capacities andSpecifications (page 520).
BRAKE FLUID SPECIFICATION
See Brake Fluid Specification (page 539).
BRAKES –
TROUBLESHOOTING
BRAKES – WARNING LAMPS
WARNING: Driving your vehiclewith the warning lamp on is dangerous.A significant decrease in brakingperformance may occur. It may take youlonger to stop your vehicle. Have yourvehicle checked as soon as possible.Driving extended distances with theparking brake engaged can cause brakefailure and the risk of personal injury.
If the ABS indicator illuminateswhen you are driving, thisindicates a malfunction. Yourvehicle continues to have normal brakingwithout the anti-lock braking systemfunction. See an authorized dealer.
It also momentarily illuminates when youswitch the ignition on to confirm the lampis functional. If it does not illuminate whenyou switch the ignition on, or begins toflash at any time, have the system checkedby an authorized dealer.
The brake indicator momentarilyilluminates when you switch theignition on to confirm the lampis functional. It may also illuminate whenyou apply the parking brake and theignition is on. If it illuminates when yourvehicle is moving, make sure the parkingbrake is disengaged. If the parking brakeis disengaged, this indicates low brake fluidlevel or a brake system fault. See anauthorized dealer.
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BRAKES – INFORMATION MESSAGES
DetailsMessage
The brake fluid level is low, check the brake system immedi-ately. See Checking the Brake Fluid (page 249).Brake Fluid Level Low
Have the system checked as soon as possible.Check Brake System
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2023 Super Duty (TFH) Canada/United States of America, enUSA, Edition date: 202211, DOMBrakes