Ford F150 Fuse Box Location

As someone who’s been behind the wheel of numerous Ford vehicles and has an in-depth understanding of the Ford F150, one of the common questions that comes up is about the location of the fuse box. The Ford F150, a reliable and iconic pickup truck, has been designed with the driver’s convenience in mind, and this extends to the placement and accessibility of the fuse box.

The Ford F150’s fuse box is strategically located to ensure that drivers or technicians can access it with ease when it’s time to check or replace a fuse. Most F150 models from the past couple of decades have their primary fuse box located under the right-hand side of the dashboard. You can access it by opening the passenger-side front door. Right at the bottom edge of the dashboard, there’s a drop-down tray; pull it, and you will find the fuse panel behind it.

However, there’s also a secondary fuse box for many Ford F150 trucks, which is under the hood. This is usually located on the driver’s side, near the battery. It’s enclosed in a black box that has clips on the side. Simply unclip it, and you’ll have access to the fuses and relays.

To identify which fuse corresponds to which function, there’s usually a handy diagram on the inside of the fuse box cover. Additionally, the owner’s manual provides a detailed guide on the fuse types and their specific roles.

When replacing or checking a fuse, it’s imperative to have the ignition turned off and the key removed. For any fuse-related work, I always recommend using a fuse puller tool, which makes it much easier to remove and replace fuses without causing any damage. If you ever find a blown fuse, it’s essential to replace it with one of the same rating.

See also: Ford F150 Service AdvanceTrac

Ford F150 Fuse Box Location

Introduction to Fuses

A fuse is a protective device placed in an electrical circuit to prevent excessive current flow, which could lead to damage or fire. It’s a sacrificial device; once a fuse has ‘blown’ or ‘tripped’, it needs to be replaced.

Basic Fuse Parameters

  1. Rated Current (Amps):
    • Defines the current at which the fuse will operate without being blown.
    • E.g., a 10A fuse is designed to carry a current of up to 10 amps.
  2. Breaking Capacity (Amps):
    • The maximum current that can safely be interrupted by the fuse.
    • A fuse with a breaking capacity of 1000A can safely interrupt a 1000-amp fault current.
  3. Voltage Rating (Volts):
    • Indicates the maximum voltage the fuse can safely handle.
    • Using a fuse in a circuit with a voltage higher than its rated voltage can be dangerous.
  4. Response Time:
    • Fast-acting (or quick-blow) fuses act quickly, suitable for sensitive electronics.
    • Slow-blow fuses tolerate short bursts of overcurrent, useful for inductive loads like motors.
  5. Physical Size:
    • Fuses come in various sizes, from tiny surface-mount fuses to large industrial ones.

Types of Fuses

  1. Cartridge Fuses:
    • Cylindrical in shape.
    • Used in household wiring and appliances.
  2. Blade Fuses:
    • Common in automotive applications.
    • Color-coded for easy identification of their current rating.
  3. Surface Mount Fuses:
    • Tiny, designed for printed circuit boards.
    • Found in electronic devices.
  4. Resettable Fuses (PTC):
    • They don’t blow but instead increase their resistance significantly when overcurrent occurs, effectively limiting the current.
    • Can ‘reset’ themselves once the fault is cleared.

See more:Ford F150 Exhaust Manifold Recall


Choosing the Right Fuse

  1. Understand the Circuit’s Needs: Know the operating voltage and typical current draw of your circuit.
  2. Overrating: Fuses should be rated at 125% to 150% of the circuit’s expected current draw. This prevents nuisance blows.
  3. Consider the Application: If the device momentarily draws a higher current at startup (like motors), a slow-blow fuse is ideal.
  4. Environment Matters: Some fuses are designed to operate in specific environments (high temperature, outdoors, etc.).

Fuse Box in Ford F150

Every vehicle, including the iconic Ford F150, is equipped with a fuse box – a centralized location housing all the vital fuses that help in the smooth functioning of your truck’s electrical components. Whether you’re troubleshooting an issue or just performing regular maintenance, knowing the fuse box’s location is essential.

Ford F150 Fuse Box Location

Primary Fuse Box Location: Inside the Cabin

  • Location Details: The primary fuse box is usually situated under the right-hand side of the dashboard. The easiest way to access it is by opening the passenger side front door.
  • Accessing the Box: At the bottom edge of the dashboard, you’ll notice a drop-down tray. Upon pulling this tray down, the fuse panel reveals itself. This panel typically hosts fuses related to the truck’s internal functions.

Secondary Fuse Box Location: Under the Hood

  • Location Details: The secondary, often larger, fuse box is located under the hood. For most Ford F150 models, you’ll find it on the driver’s side, close to the battery.
  • Accessing the Box: The fuses are enclosed within a protective black box with side clips. Unclipping this box will grant you access to more significant fuses and relays, typically pertaining to major electrical and engine components.

Understanding Fuse Functions

Every fuse within the box has a unique function, safeguarding specific vehicle components. Most fuse boxes come with a diagram on the inside of their cover, detailing which fuse corresponds to which function. Additionally, the owner’s manual provides a comprehensive guide on each fuse and its associated role.

See also: Ford F150 Charging System Service Now

Safety Tips and Recommendations

  1. Ignition State: Always ensure that the ignition is turned off, and the key is removed before you start any work related to the fuse box.
  2. Using the Right Tools: A fuse puller tool can be a lifesaver. It allows for the easy removal and replacement of fuses without causing any damage.
  3. Replacement: If a fuse appears burnt or blown, replace it immediately. But, ensure you’re replacing it with a fuse of the same rating. Using a fuse of a different rating can cause severe electrical issues.

FUSE SPECIFICATION CHART

Fuse or relay number  Fuse amp rating  Protected components  
1  Relay  Powertrain control module (3.7L, 5.0L and 6.2L engines)  
2  Relay  Starter  
3  Relay  Blower motor  
4  Relay  Rear window defroster  
5  Relay  Electric fan (high speed)  
6  Relay  Trailer tow park lamp  
7  Relay  Run/start  
8  Relay  Fuel pump  
9  Relay  Trailer tow battery charger  
10  Relay  Powertrain control module (3.5L engine)  
11  30A*  Power running board motors  
12  40A*  Electric fan (3.7L, 5.0L)  
50A*  Electric fan (3.5L, 6.2L with max trailer tow, SVT Raptor)  
13  30A*  Starter relay power  
14  30A*  Passenger power seat  
15  40A*  Electric fan (3.7L, 5.0L)  
50A*  Electric fan (3.5L, 6.2L with max trailer tow, SVT Raptor)  
16  20A*  High-intensity discharge headlamp – passenger side  
17  30A*  Trailer brake control  
18  30A*  Auxiliary switch 1 (SVT Raptor)  
19  30A*  Auxiliary switch 2 (SVT Raptor)  
20  20A*  4×4 module (electronic shift)  
21  30A*  Trailer tow battery charge relay power  
22  20A*  Auxiliary power point (instrument panel)  
23  Relay  Air conditioner clutch  
24  —  Not used  
25  —  Not used  
26  10A**  Powertrain control module – keep alive power and relay coil, canister vent solenoid (3.7L, 5.0L and 6.2L engines)  
27  20A**  Fuel pump relay power  
28  10A**  Auxiliary switch 4 (SVT Raptor)  
29  10A**  4×4 integrated wheel end solenoid  
30  10A**  Air conditioner clutch relay power  
31  15A**  Run/start relay power  
32  40A*  Rear window defroster relay power, Heated mirror relay power  
33  40A*  110-volt AC power point  
34  40A*  Powertrain control module relay power (3.7L, 5.0L and 6.2L engines)  
50A*  Powertrain control module relay power (3.5L engine)  
35  20A*  High-intensity discharge headlamps – driver side  
36  30A*  Roll stability control / Anti-lock brake system  
37  Relay  Trailer tow left stop/turn  
38  Relay  Trailer tow right stop/turn  
39  Relay  Trailer tow back-up lamps  
40  Relay  Electric fan  
41  15A**  Front camera washer (SVT Raptor)  
42  5A**  Run/start relay coil  
43  15A**  Trailer tow back-up lamp relay power  
44  15A**  Auxiliary switch 3 (SVT Raptor), Trailer tow power folding mirrors  
45  10A**  Alternator sensor (3.5L, 3.7L and 5.0L engines)  
46  10A**  Brake on/off switch  
47  60A*  Roll stability control / Anti-lock brake system module  
48  20A*  Moonroof  
49  30A*  Wiper relay power  
50  —  Not used  
51  40A*  Blower motor relay power  
52  5A**  Run/start – Electronic power assist steering, Blower relay coil  
53  5A**  Run/start – Powertrain control module  
54  5A**  Run/start – 4×4 module, Back-up lamps, Roll stability control /Anti-lock brake system, Trailer tow battery charge relay coil, Rear window defroster relay coil, Front camera washer relay coil (SVT Raptor)  
55  —  Not used  
56  15A**  Heated mirrors  
57  —  Not used  
58  —  Not used  
59  —  Not used  
60  —  Not used  
61  —  Not used  
62  Relay  Wiper motor  
63  25A*  Electric fan relay power  
64  —  Not used  
65  20A*  Auxiliary power point (instrument panel)  
66  20A*  Auxiliary power point (inside center console)  
67  20A*  Trailer tow park lamps relay power  
68  25A*  4×4 module, 4×2 elocker module  
69  30A*  Front heated or heated/cooled seats  
70  —  Not used  
71  20A*  Heated rear seats  
72  20A*  Auxiliary power point (rear)  
73  20A*  Trailer tow stop/turn lamps relay power  
74  30A*  Driver power seat/memory module  
75  15A**  Powertrain control module – voltage power 1 (3.7L, 5.0L, 6.2L engines)  
25A**  Powertrain control module – voltage power 1 (3.5L engine)  
76  20A**  Powertrain control module – Voltage power 2: General powertrain components (Mass air flow/Intake air temp sensor – 3.7L, 5.0L, 6.2L engines) (Canister vent solenoid – 3.5L engine)  
77  10A**  Powertrain control module – Voltage power 3 (Emission related powertrain components, Electric fan relays coil)  
78  15A**  Powertrain control module – Voltage power 4 – Ignition coils (3.5L, 3.7L, 5.0L engines)  
20A**  Powertrain control module – Voltage power 4 – Ignition coils (6.2L engine)  
79  5A**  Rain sensor  
80  —  Not used  
81  —  Not used  
82  —  Not used  
83  —  Not used  
84  —  Not used  
85  Relay  Electric fan (low speed)  

FAQs:

How often should I check the fuses in my Ford F150?

Periodic checks, maybe once a year, are sufficient unless you’re experiencing electrical issues or have recently installed a new electrical accessory.

What do I do if the fuses keep blowing?

If a particular fuse keeps blowing, it might indicate an underlying problem like a short circuit or a faulty component. It’s best to consult with a Ford technician or expert.

Is there a difference between the fuses in the dashboard fuse box and the one under the hood?

Yes, the interior fuse box usually holds fuses for interior electronics like radio, lights, and the OBD system. In contrast, the fuse box under the hood contains fuses and relays for bigger components such as the engine, air conditioning, and other major electrical parts.

With your Ford F150, understanding the basics of the fuse box location and functions can save you a lot of time and hassle, ensuring that you’re always ready to tackle minor electrical hitches on the go.

Leave a Comment