In this article, we’re here to help you make sense of the 2008 Ford Expedition fuse box diagram and deep dive into this invaluable resource. Explaining the functions of each fuse, to make it easier for you to understand your vehicle’s electrical system, and empowering you with the knowledge to troubleshoot electrical issues like a pro.
Table of Contents
Note: All information contained in this Quick Reference Guide was accurate at the time of duplication. For detailed operating and safety information, please consult your Owner’s Manual.
The electrical system of your vehicle is an important component that powers various functions, ensuring a smooth and efficient driving experience. The fuse box serves as a guardian, safeguarding the multitude of electrical components within your SUV from potential harm or malfunctions. By carefully distributing electrical currents, the fuse box prevents overloads and shorts, preserving the integrity of crucial components such as lights, wipers, radio, and more.
A detailed and easy-to-follow fuse box diagram is the key to unlocking this intricate electrical puzzle. It provides a roadmap, allowing you to identify and locate specific fuses, understands their respective amperage ratings, and determine their corresponding circuits.
As a vehicle owner, it’s important for you to understand the significance of a fuse box and its diagram in your vehicle. Let’s break it down:
- Protecting the electrical system: A fuse box is responsible for safeguarding the electrical system of your car.
- Preventing electrical failures: Each fuse in the fuse box is assigned to a specific electrical circuit in your car, such as the headlights, windshield wipers, radio, or power windows.
- Quick identification and replacement: The fuse box diagram provides a visual representation of the fuse box and indicates which fuse corresponds to each electrical circuit.
- Basic troubleshooting: Understanding the fuse box and its diagram allows you to perform basic troubleshooting on electrical issues.
- Emergency situations: In rare cases, certain electrical malfunctions can pose safety risks, such as a faulty brake light or a non-functioning horn.
Note: Always disconnect the battery before servicing high current fuses. To reduce risk of electrical shock, always replace the cover to the Power Distribution Box, and Auxiliary Relay Box before reconnecting the battery or refilling fluid reservoirs.
2008 Ford Expedition Power distribution box
Located within the engine compartment of your vehicle, you will find the power distribution box, which serves as a protective enclosure for high-current fuses. In the power distribution box in the engine compartment, the manufacturer has taken proactive measures to enhance the reliability of your vehicle’s electrical components. The main electrical systems are adequately protected, allowing for a smooth and trouble-free operation of your vehicle. With the coding system, you can effectively troubleshoot and address any issues related to the high-current fuses within the power distribution box. The high-current fuses are coded as follows:
Note: In the event that you need to disconnect and reconnect the battery, it's important to note that certain features may require resetting. This step is necessary to restore their functionality.
* Mini Fuses/ ** Cartridge Fuses
|Fuse/RelayLocation||FuseAmpRating||Power Distribution Box Description|
|3||—||Rear window defroster relay|
|4||30A**||Third-row seats (driver side)|
|5||30A **||Trailer tow connector (electric brake)|
|10||20A**||Rear console powerpoint|
|12||25A*||Trailer tow connector (park lamps)|
|13||30A *||Trailer tow connector (battery charge)|
|16||—||A/C clutch relay|
|18||—||Fuel pump relay|
|20||—||Trailer tow connector relay (left turn signal)|
|21||—||Trailer tow connector relay (right turn signal)|
|28||40A**||Rear window defroster, Heated mirror|
|34||25A*||Trailer tow connector (stop/turn lamps)|
|36||10A*||Powertrain Control Module (PCM) – Keep alive power, Canister vent|
|38||30A**||Third-row seats (passenger side)|
|39||60A**||Air suspension pump|
|43||20A**||4×4 module motor|
|46||40A**||Run/Start bus bar|
|47||30A**||Air suspension – solenoids|
|50||30A**||PCM – bus bar|
|53||—||Air suspension relay|
|55||—||Trailer tow connector relay (park lamp)|
|56||—||Trailer tow connector relay (battery charge)|
|60||—||One-touch Start diode|
|62||—||Fuel pump diode|
|63||15A*||Trailer tow connector (backup lamp)|
|65||10A*||Air suspension logic|
|69||30A*||Run/Start – passenger compartment fuse panel|
|70||20A*||PCM (sensors) – EFC, A/C clutch coil|
|71||5A*||Fuel coil, ISP-R|
|72||20A*||PCM (ignition coils)|
|74||20A*||PCM (sensors) – HEGO/CMS, MAFS, EVMV, CMCV, Speed deactivation switch, VCT|
|75||5A*||4×4 Integrated Wheel Ends (IWE) solenoid|
|76||20A*||PCM – VPWR|
|77||10A*||ABS logic, Heated PCV|
2008 Ford Expedition Passenger compartment fuse panel
The interior fuse box of your vehicle is conveniently situated within the passenger footwell, specifically on the right-hand side. It remains concealed behind a well-designed trim panel, providing easy access for inspection and replacement of fuses whenever necessary. This advantageous placement allows you to ensure the uninterrupted functionality of your vehicle’s electrical systems, maintaining a smooth and efficient operation. By conveniently locating the fuse panel within the passenger compartment, the manufacturer has made it effortless for you to address any fuse-related issues, promoting a hassle-free experience with your vehicle.
|Fuse/RelayLocation||Fuse AmpRating||Passenger Compartment FusePanel Description|
|1||30A||Smart window #1|
|2||15A||Driver-side memory module|
|3||15A||FES, Audio rear seat controls, SDARS|
|4||30A||Smart window #2|
|5||10A||Keypad illumination, 3rd row seat enable, Brake Shift Interlock(BSI), SPDJB|
|7||10A||Low beam headlamps (left)|
|8||10A||Low beam headlamps (right)|
|10||15A||Backlighting, Puddle lamps|
|11||10A||Not used (Spare)|
|12||7.5A||Power mirror switch, Driver seat memory switch|
|13||7.5A||Not used (Spare)|
|14||10A||Power liftgate module – keep-alive power|
|16||15A||Not used (Spare)|
|17||20A||All lock motor feeds, Liftgate release, Liftglass release|
|18||20A||Not used (Spare)|
|20||15A||Adjustable pedals, Datalink|
|21||15A||Fog lamps, Cornering lamps|
|22||15A||Park lamps relay|
|23||15A||High beam headlamps|
|25||10A||Demand lamps, Glovebox, Visor|
|26||10A||Instrument panel cluster|
|29||5A||Instrument panel cluster|
|30||5A||Not used (Spare)|
|31||10A||Compass, Automatic dimming rear view mirror|
|32||10A||Restraints control module|
|33||10A||Not used (Spare)|
|34||5A||Not used (Spare)|
|35||10A||Rear park assist, 4×4, rear video camera|
|38||20A||Subwoofer/Amp (Audiophile radio)|
|40||20A||Not used (Spare)|
|41||15A||Not used (Spare)|
|42||10A||Trailer tow battery charge coil|
|43||10A||Rear wiper logic|
|44||10A||Not used (Spare)|
|45||5A||Front wiper logic|
|46||7.5A||Climate control, Auxiliary relay control|
|47||30A CircuitBreaker||Power windows, Moon roof|
|48||—||Delayed accessory relay|
2008 Ford Expedition Standard fuse amperage rating and color
|Fuse rating||Mini fuses||Standard fuses||Maxi fuses||Cartridge maxi fuses||Fuse link cartridge|
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In conclusion, understanding the fuse box diagram of your 2008 Ford Expedition is of utmost importance for several reasons. Firstly, it allows you to identify and locate specific fuses that correspond to various electrical components in your vehicle.
Furthermore, having a clear understanding of the fuse box diagram promotes safety. By knowing which fuses protect certain systems, you can quickly address any potential overloads or malfunctions. This empowers you to take appropriate actions and prevent further damage to your vehicle’s electrical systems.
Lastly, it is also important to acknowledge the value of seeking help from experts when needed. While you can handle minor electrical repairs and fuse replacements with confidence, some complex issues may require professional assistance.