2023 Jeep Gladiator – Fuse Box Diagram & Amperage

Quick Answer

The 2023 Jeep Gladiator has three main fuse box locations:

• Under-Hood: Located in the engine compartment, typically near the battery on the driver's side.
• Passenger Compartment (Dash Kick-Panel): Located behind a panel on the passenger side footwell, often requiring removal of a trim panel.
• Rear Cargo Area (Trunk): Located in the rear cargo area, usually on the driver's side, behind a trim panel.

Under-Hood Fuse Box

The under-hood fuse box contains fuses and relays for critical engine functions, lighting, and other high-current accessories. Always verify the exact fuse layout with the diagram printed on the inside of your fuse box lid, as variations can occur between trim levels and optional equipment.

Common Relays in Under-Hood Fuse Box:

• Run/Start Relay: Powers various engine and ignition components.
• Fuel Pump Relay: Controls power to the fuel pump.
• A/C Clutch Relay: Activates the A/C compressor clutch.
• Headlight Relays: Control power for high and low beam headlights.
• Starter Relay: Engages the starter motor.
• Trailer Tow Relay: Provides power for trailer functions (if equipped).

Passenger Compartment Fuse Box (Dash Kick-Panel)

This fuse box, often referred to as the Junction Block or Interior Fuse Box, typically manages electrical components within the cabin, such as the radio, power windows, interior lights, and various driver convenience features. It is usually found behind a removable panel in the passenger footwell, near the kick panel.

Rear Cargo Area Fuse Box (Trunk/Cargo)

In the 2023 Jeep Gladiator, a third fuse box is typically located in the rear cargo area, commonly on the driver's side, behind an access panel. This box primarily handles power for rear-specific accessories, trailer wiring, and sometimes the rear power outlet.

How to Test a Fuse

Testing a fuse is a straightforward process that can help you diagnose electrical issues. You will need a fuse puller (usually found in one of the fuse boxes) and a multimeter or a fuse tester.

1. Locate the Suspect Fuse: Identify the fuse corresponding to the non-functioning component using the diagrams above and your vehicle's fuse box lid legend.
2. Turn Off the Vehicle: Ensure the ignition is off and disconnect the negative battery terminal for added safety, especially when working on the under-hood fuse box.
3. Remove the Fuse: Use the fuse puller to carefully remove the fuse from its slot.
4. Visually Inspect: Hold the fuse up to a light. If the metal wire (filament) inside is broken or burnt, the fuse is blown and needs replacement.
5. Test with a Multimeter (for less obvious breaks):
   • Set your multimeter to the continuity setting (often indicated by a speaker symbol).
   • Touch the probes to the two metal test points on top of the fuse. If the multimeter beeps or shows a reading close to zero ohms, the fuse is good. If there's no continuity (no beep/infinite resistance), the fuse is blown.
6. Replace the Fuse: If the fuse is blown, replace it with a new fuse of the exact same amperage rating and color. Using a fuse with a higher amperage can cause severe damage to your vehicle's electrical system or even lead to a fire.

Common Blown Fuses on This Vehicle

While any fuse can blow, some are more common culprits due to high usage or common accessory issues. If a component stops working, checking these fuses first can save you time:

• Cigar Lighter/12V Power Outlet Fuses: These often blow due to overloaded accessories, faulty chargers, or foreign objects inserted into the outlets. If your phone isn't charging, check the yellow 20A fuse (F05 in the passenger compartment).
• Radio/Infotainment System Fuse: Issues with the radio not turning on, or intermittent problems, often point to this fuse. Check the red 10A fuse (F01 in the passenger compartment).
• Headlight/Tail Light Fuses: A single non-working headlight or tail light, especially after a bulb replacement, might be a blown fuse. Check the corresponding red/blue 10A or 15A headlight/tail light fuses in the under-hood and passenger compartment boxes.
• Blower Motor Fuse: If your HVAC fan stops working entirely, a blown blower motor fuse (F10 - 20A yellow in the under-hood box) is a likely cause.
• Trailer Tow Fuses: If you experience issues with trailer lights or trailer brakes, examine the yellow 20A fuses dedicated to trailer functions in both the under-hood (F13) and rear cargo area (F01, F02, F07) fuse boxes. These can blow from wiring shorts on the trailer or excessive current draw.

Always remember to:

• Verify with your specific vehicle's fuse box lid diagram: While this guide provides common configurations, exact layouts can vary.
• Replace with the correct amperage: Never use a fuse with a higher amperage rating.
• Investigate the cause: A fuse rarely blows without a reason. If a new fuse blows again quickly, there's an underlying electrical issue that needs professional diagnosis.

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