What fuse controls the ignition?

Depending on make & year, most later models have a high amperage fuse in the main fuse box in the engine compartment . Usually this fuse is labeled ignition. Or you can pull the fuel pump fuse. You can look at the owners manual to identify the fuse or look at the fuse box cover to see proper fuse.

Where is the internal fuse box?

The main fuse box is typically located under the hood , while secondary fuse panels might be inside the car, often near the dashboard or steering wheel. The fuse's wire conductor breaks when the current exceeds the ampere limit, which manufacturers usually define along with different color codes on each fuse.

Where is the engine compartment fuse box?

Engine fuse boxes are typically situated near the battery . In this vehicle, the battery is on the driver's side, and there is a fuse box right above it with a black plastic cover to protect the fuses. On the passenger side, there is also a battery, and the fuse box is located nearby.

Where are the fuses for the dashboard?

Find the fuse that powers your dashboard lights. Check under the hood, under the dashboard, or near or in the glove compartment . Once you find the fuse box or boxes, remove the lid and check the diagram on the underside of the lid for a fuse labeled "dash lights" or just “lights.”

Where is the fuse box on a 2016 Ford f250?

The fuse panel is in the right-hand side of the passenger footwell behind a trim panel . To remove the trim panel, pull it toward you and swing it away from the side.

Can a blown fuse cause a car not to start?

Blown fuse – Sometimes the simplest explanation is the best one. A blown fuse in the starter circuit could be the cause of a no-start problem . Broken or corroded wiring – Damaged or dirty wires to the battery or to the starter solenoid (or wires that are loose) can prevent sufficient power from reaching the starter.

Can a fuse be bad but not blown?

Sometimes a fuse is bad but not necessarily blown . In this case, the best way to test it is with a test light or a multimeter. These are both relatively inexpensive tools and provide an easy way of checking if there's a current running through the fuse.

What are the symptoms of a blown fuse?

Signs Your Fuse Has Blown Out The thin metal strip breaks apart when the fuse blows, terminating the electrical connection . Sometimes, the metal strip will also melt and discolor the glass window. If that happens, you might notice a burnt smell when you approach the fuse box, also known as an electrical panel.

How do you know if your ignition fuse is blown?

Still gripping it with the puller, hold the fuse up to the light (or a light source) and look through the translucent bodywork. You should see a thin metal wire in there. If the wire is no longer a continuous thread and appears broken or in two pieces, the fuse has indeed 'blown' .

Why won't my ignition turn in my Ford F-150?

The most common reasons a Ford F-150 key won't turn are a binding steering column/lock, an ignition switch issue, or a problem with the ignition key .

How do I know if my ignition relay fuse is bad?

Some of the symptoms of a bad ignition relay include an unresponsive ignition switch, stalling, and a drained battery . Your vehicle can also start intermittently.

How do you check an ignition switch fuse?

Inspect the metal strip on the fuse to see if it's damaged. You can also test the ignition relay by swapping the fuse out for a fuse that you know is undamaged and then starting the vehicle. If the vehicle starts, your old fuse was bad. To replace the fuse, purchase a replacement for your specific make and model.

2016 Ford F-150 fuse box diagram

This F-150 has 2 different fuse boxes:

Power Distribution Box diagramPassenger Compartment Fuse Panel diagram

Type	No.	Description
Relay	4	Telescoping side-view mirror.
Fuse FMX/JCase 40A	5	Rear window defroster.
Relay	8	Telescoping side-view mirror.
Fuse FMX/JCase 60A	11	Automatic brake system motor.
Fuse FMX/JCase 50A	12	Body control module 1.
Fuse FMX/JCase 60A	13	Body control module 2.
Fuse MINI 20A	14	Amplifier.
Fuse MINI 25A	15	4x4.
Fuse MINI 10A	16	Spot light module.
Fuse MINI 15A	17	Heated seat.
Fuse MINI 10A	18	Steering-column lock.
Fuse MINI 10A	19	Power seats.
Fuse MINI 15A	20	Snow plow. Rear heated seats.
Fuse FMM/MCase 30A	22	Windshield wiper motor.
Fuse FMM/MCase 15A	23	Rain sensor.
Fuse FMM/MCase 25A	24	Series fan feed.
Fuse FMM/MCase 30A	26	Driver seat motors.
Fuse FMM/MCase 30A	27	Passenger power seat.
Fuse FMM/MCase 30A	28	Climate controlled seat.
Relay	30	Air conditioner clutch relay.
Fuse FMX/JCase 50A	33	Electric fan 3.
Fuse FMX/JCase 25A	34	Trailer tow park lamps.
Fuse FMX/JCase 20A	35	Trailer tow stop-turn relay fuse.
Fuse FMX/JCase 25A	36	Trailer tow lamps module.
Fuse FMX/JCase 50A	37	Electric fan 1.
Fuse MINI 10A	38	Alt A sensor.
Fuse MINI 10A	39	Integrated wheel end solenoid.
Fuse MINI 15A	40	E-locker.
Fuse MINI 10A	41	Telescoping mirror.
Fuse MINI 30A	42	Transmission fluid pump.
Fuse MINI 25A	43	Horn.
Fuse MINI 10A	44	Air conditioner clutch.
Fuse MINI 10A	45	Powertrain control module relay coil.
Fuse MINI 10A	46	Wiper relay coil.
Fuse FMM/MCase 30A	49	Trailer brake control module.
Fuse FMM/MCase 30A	50	Power running boards.
Relay	51	Fuel pump relay.
Fuse FMM/MCase 30A	54	Voltage quality module. Body-control-module voltage-qualitymodule feed.
Fuse FMM/MCase 40A	55	Body control module RP2 feed.
Fuse FMM/MCase 20A	56	Fuel pump.
Fuse FMM/MCase 30A	57	Right-hand EPB actuator.
Fuse FMM/MCase 30A	58	Left-hand EPB actuator.
Fuse FMM/MCase 30A	59	Starter.
Fuse FMM/MCase 40A	60	Blower motor.
Fuse FMM/MCase 30A	61	Brake control module. Automatic brake system valves.
Relay	62	Power seat relay.
Fuse MINI 15A	63	Heated mirrors.
Relay	65	Starter relay.
Relay	66	Powertrain control module relay.
Relay	67	Windshield wiper relay.
Relay	68	Blower motor relay.
Relay	69	Power sliding back window relay.
Relay	70	Electric fan 1 relay.
Fuse FMM/MCase 25A	72	4x4.
Fuse FMM/MCase 30A	74	PDRG motor.
Relay	75	Horn relay.
Relay	77	Steering column lock relay.
Relay	79	Trailer tow parking lamp relay.
Relay	80	Rear window defroster relay.
Relay	82	PDRG close relay.
Fuse MINI 10A	87	Trailer tow backup lamps.
Fuse FMM/MCase 20A	89	Cigar lighter power point 1.
Fuse FMM/MCase 20A	90	Power point 2.
Fuse FMM/MCase 20A	91	Power point 3.
Fuse FMM/MCase 20A	92	Power point 4.
Fuse MINI 25A	93	[GTDI vehicle] power 1.
Fuse MINI 10A	93	[PFI vehicle] power 1.
Fuse MINI 25A	95	Vehicle power 2.
Fuse MINI 10A	97	Vehicle power 3.
Fuse MINI 20A	99	Vehicle power 4 [PFI].
Fuse MINI 15A	99	Vehicle power 4 [GTDI].
Relay	102	Snow plow relay.
Relay	104	Electic fan 3 relay.
Fuse MINI 10A	105	Power steering.
Fuse MINI 10A	107	Anti-lock brakes.
Fuse MINI 10A	109	Powertrain control module.
Fuse MINI 10A	110	4x4 run/start. Adaptive cruise control.
Fuse MINI 10A	111	Transmission pump run-start.
Fuse MINI 5A	113	Left hand blind spot information system. Rear view camera. Front view camera. Voltage quality module.
Relay	114	Electric fan 2 relay.

Type	No.	Description
Fuse MICRO2 10A	1	Demand lamp relay. Power seats relay. Glove box. Vanity lamps. Overhead console. Dome. Courtesy. Map lamps.
Fuse MICRO2 5A	2	Memory module logic. Memory seat switches. Lumbar motor.
Fuse MICRO2 20A	3	Driver door lock motor.
Fuse MICRO2 5A	4	Trailer brake control.
Fuse MICRO2 20A	5	Not used.
Fuse MICRO3 10A	6	Not used.
Fuse MICRO3 10A	7	Not used.
Fuse MICRO3 10A	8	Not used.
Fuse MICRO3 10A	9	Not used.
Fuse MICRO3 5A	10	Not used (spare).
Fuse MICRO3 5A	11	Combined sensor module.
Fuse MICRO3 5A	12	Climate head module. Smart datalink converter.
Fuse MICRO3 5A	13	Cluster. SCCM.
Fuse MICRO3 10A	14	Brake.
Fuse MICRO3 10A	15	Smart datalink converter.
Fuse MICRO2 15A	16	Tailgate release.
Fuse MICRO3 5A	17	HUD. Ignition switch and passive-entry passivestart start stop switch.
Fuse MICRO3 5A	18	Key inhibit solenoid. Tow haul (O/D) cancel for floor or column shifter.
Fuse MICRO3 5A	20	Not used.
Fuse MICRO3 5A	21	HUD. In car temperature with humidity sensor.
Fuse MICRO3 5A	22	EPB. Power seat.
Fuse MICRO2 10A	23	PDRG switch. Inverter. Driver side window. Moonroof. Vista roof.
Fuse MICRO2 20A	24	Central lock/unlock.
Fuse MICRO2 30A	25	Driver door control module.
Fuse MICRO2 30A	26	Passenger door control module.
Fuse MICRO2 30A	27	Vista roof. Moonroof.
Fuse MICRO2 20A	28	Not used.
Fuse MICRO2 30A	29	Not used.
Fuse MICRO2 30A	30	Not used.
Fuse MICRO2 15A	31	Adjustable pedal switch and motor.
Fuse MICRO2 10A	32	Multi-function display. Global position system. Sync 1. Sync 2. Radio frequency receiver.
Fuse MICRO2 20A	33	Radio.
Fuse MICRO2 30A	34	Run-start relay.
Fuse MICRO2 5A	35	Restraints module.
Fuse MICRO2 15A	36	360 camera module. Heated steering wheel module. Rear-view mirror. Rear heated seats.
Fuse MICRO2 20A	37	Power distribution box run-start fuses.
Circuit breaker MAXI	38	Rear window switches and motors.

Ford F-150 fuse box diagrams change across years, pick the right year of your vehicle:

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Source: Ford F-150 2016 Owner's Manual

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2016 Ford F-150 fuse box diagram - StartMyCar (2024)

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FAQs

What fuse controls the ignition? ›

How do I know if my ignition relay fuse is bad? ›