2023 FORD SUPER DUTY fuse box

UNDER HOOD OVERVIEW - 7.3L, GASOLINE
Under hood fuse box. See Accessing the Under Hood Fuse Box (page 430).A
Battery. See Changing the 12V Battery (page 457).B
Engine oil dipstick. See Engine Oil Dipstick Overview (page 444).C
Engine oil filler cap. See Adding Engine Oil (page 444).D
Brake fluid reservoir. See Checking the Brake Fluid (page 249).E
Windshield washer fluid reservoir. See Adding Washer Fluid (page 115).F
Engine coolant reservoir. See Checking the Coolant Level (page 450).G
Power steering fluid reservoir. See Checking the Hydraulic Power SteeringFluid (page 280).H
Air cleaner assembly. See Changing the Engine Air Filter (page 445).I
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2023 Super Duty (TFH) Canada/United States of America, enUSA, Edition date: 202211, DOMMaintenanceE351057

LOCATING THE AUXILIARY
SWITCHES
The auxiliary switchboard on the overheadconsole makes aftermarket customizationeasier with six prewired switchesconnected to the power distribution box.The circuits are individually fused forconnection of electrical accessories.
The switches have labels for AUX 1 throughAUX 6. They only operate when the ignitionis in the on position, whether the engine isrunning or not. We recommend that youleave the engine running to maintainbattery charge when using the switchesfor an extended time or when using highercurrent draw accessories. When you turnon a switch, the indicator light on theswitch illuminates and the circuit providespower to the device wired to that switch.
Note:AUX switch 1 operates the off-roadlamps when your vehicle comes with thisoption.
LOCATING THE AUXILIARY
SWITCH WIRING
There are three sets of blunt-cut andsealed circuits. Two sets are under thehood and behind the battery tray, and oneset is inside your vehicle at the passengerfootwell.
The powered set (A) is taped behind thebattery tray and has a red spot tape mark.
The second set (B) is also under the hood.It is taped behind the battery tray and hasa white spot tape mark. This set routes tothe interior passenger footwell.
Remove the battery and battery tray toaccess the underhood circuits.
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2023 Super Duty (TFH) Canada/United States of America, enUSA, Edition date: 202211, DOMAuxiliary Switches (If Equipped)E220728 E347548 E347399

The interior set is taped on a wire harnessby the passenger side footwell. This set isthe other end of the circuits taped behindthe battery tray, with a white spot tapemark.
Remove the fuse panel access door in thekick panel to access the wires. If you do notsee them, you may need to pull themdown.
See Fuses (page 430). See your authorizeddealer for service.
Circuits from the under hood fuse box (A)are powered. All other circuits (B-E) arenot connected at either end.
Additional information on fuse and relaylocations is available. See Fuses (page430). See your authorized dealer for service.
IDENTIFYING THE AUXILIARY SWITCH WIRING
The switches are coded as follows:
FuseWire SizePassengerFootwellWire ColorUnder-hoodPassThrough
Wire ColorPowerDistribu-tion Box
10A1.0 mm²AUX 1Violet/GreenAUX 1Violet/GreenAUX 1
15A1.0 mm²AUX 2Green/BrownAUX 2Green/BrownAUX 2
15A1.0 mm²AUX 3Green/BlueAUX 3Green/BlueAUX 3
10A1.0 mm²AUX 4BrownAUX 4BrownAUX 4
5A1.0 mm²AUX 5Blue/OrangeAUX 5Blue/OrangeAUX 5
5A1.0 mm²AUX 6Yellow/OrangeAUX 6Yellow/OrangeAUX 6
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2023 Super Duty (TFH) Canada/United States of America, enUSA, Edition date: 202211, DOMAuxiliary Switches (If Equipped)

Four-Wheel Drive........................................238Four-Wheel Drive Modes................................242Four-Wheel Drive – Troubleshooting.........242Four-Wheel Drive Indicators....................242Four-Wheel Drive Limitations.................239Four-Wheel Drive Modes..........................242Four-Wheel Drive High.....................................242Four-Wheel Drive Low.....................................242Two-Wheel Drive High.....................................242Four-Wheel Drive Precautions...............239Four-Wheel Drive –Troubleshooting........................................242Four-Wheel Drive – InformationMessages.........................................................243Four-Wheel Drive – Warning Lamps..........242Four Wheels Down TowSee: Recreationally Towing Your Vehicle -4x2......................................................................429See: Recreationally Towing Your Vehicle -4x4......................................................................427Front Axle Fluid Capacity andSpecification..............................................540Front Exterior...................................................34Front Parking Aid.........................................284Front Parking Aid Audible Warnings..........284Front Parking Aid Limitations.......................284Locating the Front Parking AidSensors.............................................................284What is the Front Parking Aid.......................284Front Seat Precautions...............................161Front Seats.......................................................161Heated Seats.......................................................168Manual Seats.......................................................162Massage Seats.....................................................167Power Seats.........................................................164Ventilated Seats.................................................169Front Seats Videos......................................169Fuel and Refueling.......................................214Fuel and Refueling –Troubleshooting............................................220Fuel Quality...........................................................214Refueling................................................................218Running Out of Fuel...........................................217Fuel and Refueling Precautions..............214Fuel and Refueling –Troubleshooting........................................220Fuel and Refueling – InformationMessages.........................................................220
Fuel and Refueling – WarningLamps...............................................................220Fuel Gauge.......................................................137Fuel Gauge Limitations....................................138Locating the Fuel Filler Door..........................138What Is Distance to Empty.............................138What Is the Fuel Gauge....................................137What Is the Low Fuel Reminder....................138Fuel Quality.....................................................214Selecting the Correct Fuel...............................214Selecting the Correct Fuel for ColdWeather.............................................................215Fuel Tank Capacity - Diesel.....................534Fuel Tank Capacity.....................................220Fuel Tank Capacity - Gasoline................535Fuse Precautions.........................................430Fuses................................................................430Fuses – Troubleshooting................................439Interior Fuse Box................................................435Under Hood Fuse Box......................................430Fuses – Troubleshooting..........................439Fuses – Frequently Asked Questions........439
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Garage Door Opener AdditionalAssistance....................................................182Garage Door Opener....................................179Garage Door Opener Introduction..........179Garage Door Opener Precautions andFrequencies..................................................179General Maintenance Information -Diesel..............................................................591General Maintenance Information -Gasoline.......................................................594Glasses Holder..............................................201Locating the Glasses Holder..........................201Global Opening.............................................128Switching Global Opening On andOff........................................................................129Using Global Opening.......................................128What Is Global Opening...................................128Glossary of Tire Terminology..................484Glove Compartment....................................197Locking the Glove Compartment.................197Opening the Glove Compartment................197
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How Does the Selective CatalyticReduction System Work........................226How Does the Speed Limiter Work.......316How Does Traction Control Work.........268How Does Trailer Backup AssistanceWork..............................................................386How Does Trailer Hitching AssistanceWork...............................................................378How Does Trailer Reverse GuidanceWork...............................................................401How Does Trailer Sway ControlWork...............................................................377How Do Personal Profiles Work..............577How Do the Front Airbags Work...............57How Do the Side Airbags Work.................57Hydraulic Power Steering Fluid Capacityand Specification.....................................546Hydraulic Power Steering.........................279Checking the Hydraulic Power SteeringFluid...................................................................280Hydraulic Power Steering Guidelines.........279Locating the Hydraulic Power Steering FluidReservoir..........................................................280
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Icon GlossarySee: Symbols Glossary.......................................23IconsSee: Symbols Glossary.......................................23Identifying Fuse Types...............................439Identifying the Audio Unit........................553Identifying the Auxiliary SwitchWiring............................................................587Identifying the Climate ControlUnit..................................................................152Idle Timer........................................................207How Does Idle Timer Work.............................207Idle Timer Precautions....................................208Idle Timer Settings...........................................208What is Idle Timer..............................................207Ignition Switch..............................................202Inflating the Tires........................................490Information On Demand Screen...........564Information on the Tire Sidewall...........479Inspecting the Tire for Damage.............494Inspecting the Tire for Wear....................494
Inspecting the Wheel ValveStems...........................................................498Installing Child Restraints..........................40Attaching the Front Seat Tether Strap........45Attaching the Rear Seat Tether Strap..........46Combining the Seatbelt and Lower Anchorsfor Attaching Child Restraints....................45Installing a Child Restraint in a CenterSeat......................................................................44Using Lower Anchors and Tethers forChildren...............................................................44Using Seatbelts....................................................40Using Tether Straps.............................................45Instrument Cluster Display.......................143Instrument Cluster Display Main Menu -Vehicles With: 12 Inch Screen...............144Instrument Cluster Display Main Menu -Vehicles With: 8 Inch Screen.................143Instrument Cluster Indicators..................140Instrument Cluster.......................................136Fuel Gauge.............................................................137Instrument Cluster Overview - VehiclesWith: 12 Inch Screen..................................137Instrument Cluster Overview - VehiclesWith: 8 Inch Screen...................................136Instrument Cluster WarningLamps............................................................139Instrument Panel............................................32Integrated Trailer Brake Controller.........372Integrated Trailer Brake Controller –Troubleshooting.............................................375Integrated Trailer Brake ControllerPrecautions..................................................372Integrated Trailer Brake Controller –Troubleshooting........................................375Integrated Trailer Brake Controller –Frequently Asked Questions.....................376Integrated Trailer Brake Controller –Information Messages.................................375Integrated Trailer Brake ControllerVideos............................................................376Intentionally Exceeding the Set SpeedLimit................................................................316Interior Air Quality........................................160Interior Bulbs................................................468Interior Bulb Specification Chart.................468Interior Fuse Box..........................................435Accessing the Interior Fuse Box...................435
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Identifying the Fuses in the Interior FuseBox.....................................................................436Locating the Interior Fuse Box......................435Interior Lamp Function...............................126Switching the Interior Lamp Function Onand Off...............................................................126What Is the Interior Lamp Function.............126Interior Lighting.............................................126Ambient Lighting.................................................127Interior Lamp Function.....................................126Interior Lighting – Troubleshooting..............127Interior Lighting – Troubleshooting........127Interior Lighting – Frequently AskedQuestions..........................................................127Interior Mirror...................................................131Auto-Dimming Interior Mirror..........................131Interior Mirror Precautions..........................131Introduction.......................................................21
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Jump Starting the Vehicle.........................421Jump Starting Precautions..............................421Jump Starting the Vehicle..............................422Preparing the Vehicle........................................421
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Keyless Entry...................................................85Keyless Entry – Troubleshooting...................86Keyless Entry Keypad....................................87Keyless Entry Keypad –Troubleshooting..............................................89Keyless Entry Keypad Limitations............87Keyless Entry Keypad Master AccessCode.................................................................87Keyless Entry Keypad Personal AccessCodes..............................................................88Keyless Entry Keypad –Troubleshooting..........................................89Keyless Entry Keypad – Frequently AskedQuestions...........................................................89Keyless Entry Keypad Videos....................89Keyless Entry Limitations............................85Keyless Entry Settings..................................85Keyless Entry – Troubleshooting.............86Keyless Entry – Frequently AskedQuestions...........................................................86
Keyless Entry Videos....................................86Keys and Remote Controls........................69Keys and Remote Controls –Troubleshooting..............................................80Keys and Remote Controls –Troubleshooting..........................................80Keys and Remote Controls – InformationMessages...........................................................80
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Lane Centering.............................................303How Does Lane Centering Work..................303Lane Centering Alerts......................................305Lane Centering AutomaticCancellation...................................................305Lane Centering Indicators..............................306Lane Centering Limitations...........................304Lane Centering Manual Cancellation........305Lane Centering Precautions..........................303Lane Centering Requirements.....................304Switching Lane Centering On andOff......................................................................304Lane Keeping System Indicators...........320Lane Keeping System..................................317Aid Mode................................................................319Alert and Aid Mode............................................319Alert Mode.............................................................318Blind Spot Assist...............................................320Blind Spot Assist with TrailerCoverage...........................................................322Lane Keeping System –Troubleshooting............................................324Lane Keeping System Limitations..........317Lane Keeping System Precautions.........317Lane Keeping System –Troubleshooting........................................324Lane Keeping System – Frequently AskedQuestions.........................................................325Lane Keeping System – InformationMessages.........................................................324Lane Keeping System Videos.................326Launching or Retrieving a Boat orPersonal Watercraft.................................367Linking or Unlinking a PersonalProfile.............................................................577Live Traffic......................................................579Switching Live Traffic On and Off................579
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Trailer Lighting Check................................363Trailer Reverse GuidancePrecautions.................................................401Trailer Reverse Guidance...........................401Setting Up Trailer Reverse Guidance for aConventional Trailer.....................................401Trailer Reverse Guidance –Troubleshooting............................................407Trailer Reverse Guidance –Troubleshooting........................................407Trailer Reverse Guidance – FrequentlyAsked Questions..........................................409Trailer Reverse Guidance – InformationMessages.........................................................407Trailer Sway Control Precautions...........377Trailer Sway Control....................................377Trailer Sway Control Videos.....................377Trailer Towing Hints....................................366Trailer Towing Navigation..........................581Trail Turn Assist Indicators........................275Trail Turn Assist Limitations.....................275Trail Turn Assist Precautions...................275Trail Turn Assist.............................................275Trail Turn Assist – Troubleshooting............276Trail Turn Assist –Troubleshooting........................................276Trail Turn Assist – Frequently AskedQuestions.........................................................276Trail Turn Assist – InformationMessages.........................................................276Transfer Case Fluid Capacity andSpecification...............................................242Transmission Fluid TemperatureGauge.............................................................138Transporting the Vehicle...........................424Trip Computer................................................146Trip Data..........................................................146Turbo Boost Gauge......................................138
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Under Hood Fuse Box...............................430Accessing the Under Hood Fuse Box........430Identifying the Fuses in the Under HoodFuse Box............................................................431Locating the Under Hood Fuse Box...........430Under Hood Overview - 6.7L Diesel......441
Under Hood Overview - 6.8L,Gasoline.......................................................442Under Hood Overview - 7.3L,Gasoline.......................................................443Under Seat Storage.....................................198Locating the Under Seat StorageCompartment.................................................198USB Ports........................................................183USB Ports Videos.........................................184Using Alexa Built-In.....................................567Using a Slide-In Camper...........................352Using Auto Hold...........................................266Using Digital Key..............................................71Using Keyless Entry.......................................85Using Onboard Scales...............................384Using Progressive RangeSelection......................................................236Using Smart Hitch.......................................382Using Snow Chains.....................................487Using the Center Console WorkSurface..........................................................193Using the Diesel Engine ExhaustBrake.............................................................256Using the Instrument Cluster DisplayControls.........................................................143Using the Integrated Trailer BrakeController......................................................372Using the Key Cards......................................69Using the Keyless Entry Keypad...............88Using the Remote Control..........................69Using the Trailer Backup AssistanceController.....................................................392Using the Trailer Backup AssistanceViews.............................................................393Using This Publication..................................22Using Trailer Hitching Assistance..........379Using Trailer Reverse GuidanceViews............................................................405
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Vehicle Care..................................................469Cleaning the Exterior........................................470Cleaning the Interior..........................................472Vehicle Care Videos....................................475Vehicle Identification Number................547Locating the Vehicle IdentificationNumber.............................................................547
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