2023 FORD F150 fuse

Engine oil dipstick. See Engine Oil Dipstick Overview (page 505).D.
Brake fluid reservoir. See Checking the Brake Fluid (page 291).E.
Air filter assembly. See Changing the Engine Air Filter (page 510).F.
Engine coolant reservoir. See Checking the Coolant (page 506).G.
Windshield washer fluid reservoir.H.
UNDER HOOD OVERVIEW - 3.3L
Engine compartment fuse box. See Under Hood Fuse Box (page 488).A.
Battery. See Changing the 12V Battery (page 512).B.
Engine oil filler cap. See Checking the Engine Oil Level (page 505).C.
Engine oil dipstick. See Engine Oil Dipstick Overview (page 505).D.
Brake fluid reservoir. See Checking the Brake Fluid (page 291).E.
Air filter assembly. See Changing the Engine Air Filter (page 510).F.
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2023 F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202206, DOMMaintenanceE337514

Engine coolant reservoir. See Checking the Coolant (page 506).G.
Windshield washer fluid reservoir.H.
UNDER HOOD OVERVIEW - 3.5L ECOBOOST™
Engine compartment fuse box. See Fuses (page 488).A.
Battery. See Changing the 12V Battery (page 512).B.
Engine oil filler cap. See Checking the Engine Oil Level (page 505).C.
Engine oil dipstick. See Engine Oil Dipstick Overview (page 505).D.
Brake fluid reservoir. See Brakes (page 291).E.
Air filter. See Changing the Engine Air Filter (page 510).F.
Engine coolant reservoir. See Checking the Coolant (page 506).G.
Windshield washer fluid reservoir.H.
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2023 F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202206, DOMMaintenanceE313722

UNDER HOOD OVERVIEW - 3.5L, HYBRID ELECTRIC VEHICLE
(HEV)
Engine compartment fuse box. See Fuses (page 488).A.
Battery. See Changing the 12V Battery (page 512).B.
Engine oil dipstick. See Engine Oil Dipstick Overview (page 505).C.
Engine oil filler cap. See Adding Engine Oil (page 505).D.
Brake fluid reservoir. See Checking the Brake Fluid (page 291).E.
Air filter. See Changing the Engine Air Filter (page 510).F.
Secondary coolant reservoir. See Checking the Coolant (page 506).G.
Engine coolant reservoir. See Checking the Coolant (page 506).H.
Windshield washer fluid reservoir.I.
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2023 F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202206, DOMMaintenanceE333718

UNDER HOOD OVERVIEW - 5.0L
Engine compartment fuse box. See Under Hood Fuse Box (page 488).A.
Engine oil filler cap. See Engine Oil Dipstick Overview (page 505).B.
Engine oil dipstick. See Engine Oil Dipstick Overview (page 505).C.
Brake fluid reservoir. See Checking the Brake Fluid (page 291).D.
Air filter assembly. See Changing the Engine Air Filter (page 510).E.
Engine coolant reservoir. See Checking the Coolant (page 506).F.
Windshield washer fluid reservoir.G.
Battery. See Changing the 12V Battery (page 512).H.
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2023 F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202206, DOMMaintenanceE346494

Water alone, without engine coolant, cancause engine damage from corrosion,overheating or freezing.
Do not use the following as a coolantsubstitute, as they can cause enginedamage from overheating or freezing:
•Alcohol.
•Methanol.
•Brine.
•Any coolant mixed with alcohol ormethanol antifreeze.
Do not add extra inhibitors or additives tothe coolant. These can be harmful andcompromise the corrosion protection ofthe coolant.
Severe Climates
If you drive in extremely cold climates, youmay need to increase the coolantconcentration above 50%.
Note:A coolant concentration of 60%provides improved freeze point protection.Coolant concentrations above 60%decrease the overheat protectioncharacteristics of the coolant and couldcause engine damage.
If you drive in extremely hot climates, youmay need to decrease the coolantconcentration to 40%.
Note:A coolant concentration of 40%provides improved overheat protection.Coolant concentrations below 40%decrease the overheat and corrosionprotection characteristics of the coolant andcould cause engine damage.
Coolant Change
WARNING: Do not dispose ofcoolant in the household refuse or thepublic sewage system. Use an authorizedwaste disposal facility.
Change the coolant at specific mileageintervals. Refer to the scheduledmaintenance information. See NormalScheduled Maintenance (page 670).
Note:Dispose of used coolant in theappropriate manner.
Follow your community's regulations andstandards for recycling and disposing ofautomotive fluids.
Fail-Safe Cooling
Fail-safe cooling allows you to temporarilydrive your vehicle before any incrementalcomponent damage occurs. The fail-safedistance depends on ambienttemperature, vehicle load and terrain.
How Fail-Safe Cooling Works
WARNING: If you continue to driveyour vehicle when the engine isoverheating, the engine could stopwithout warning. Failure to follow thisinstruction could result in the loss ofcontrol of your vehicle.
If the engine begins to overheat,the coolant temperature gaugemoves toward the red zone:
A warning lamp illuminates anda message may appear in theinformation display.
If the engine reaches a presetover-temperature condition, the engineautomatically switches to alternatingcylinder operation. Each disabled cylinderacts as an air pump and cools the engine.
When this occurs, your vehicle stilloperates, however:
•Engine power is limited.
•The air conditioning system turns off.
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2023 F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202206, DOMMaintenanceE103308 E67028

WHAT ARE THE AUXILIARY
SWITCHES
The auxiliary switchboard on the overheadconsole makes aftermarket customizationeasier with six prewired switchesconnected to the power distribution box.Each circuit is individually fused forconnection of electrical accessories.
For maximum vehicle performance, keepthe following information in mind whenadding accessories or equipment to yourvehicle:
•When adding accessories, equipment,passengers and luggage to yourvehicle, do not exceed the total weightcapacity of the vehicle or of the frontor rear axle (GVWR or GAWR asindicated on the safety compliancecertification label). Ask an authorizeddealer for specific weight information.
•It is your responsibility to ensure thatany equipment you have fittedcomplies with applicable locallegislation.
•An authorized dealer needs to installmobile communication systems.Improper installation may harm theoperation of your vehicle, particularlyif the manufacturer did not design themobile communication systemspecifically for automotive use.
•If you or an authorized dealer add anyelectrical or electronic accessories orcomponents not produced by us toyour vehicle, you may adversely affectbattery performance and durability. Inaddition, you may also adversely affectthe performance of the other electricalsystems in the vehicle.
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.
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2023 F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202206, DOMAuxiliary Switches (If Equipped)E220728

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.
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 488). 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 (page488). 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
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2023 F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202206, DOMAuxiliary Switches (If Equipped)E347548 E347399

FuseWire SizePassengerFootwellWire ColorUnder-hoodPassThrough
Wire ColorPowerDistribu-tion Box
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 F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202206, DOMAuxiliary Switches (If Equipped)