2021 Jeep Gladiator Fuse Box Diagram & Amperage

Quick answer

The 2021 Jeep Gladiator has fuse boxes located in three main areas:

• Under-hood: The Power Distribution Center (PDC) is located in the engine compartment, near the battery.
• Passenger Compartment: Located behind the passenger kick panel, next to the glove box.
• Rear Cargo Area: Situated in the trim panel on the passenger side of the rear cargo area.

Under-hood Power Distribution Center (PDC)

This fuse box contains high-current fuses and relays for major electrical components. Always disconnect the negative battery terminal before servicing fuses in this location.

Passenger Compartment Fuse Box

This fuse box is located behind the passenger side kick panel. Gently pull back the carpet and remove the plastic cover to access it. This location typically houses fuses for various interior functions and accessories.

Rear Cargo Area Fuse Box

Found in the passenger-side trim panel in the rear cargo area. This fuse box typically controls accessories in the rear of the vehicle, including trailer connections for some models.

How to Test a Fuse

Testing a fuse is a straightforward process and can save you a trip to the mechanic. Here's how:

1. Locate the Fuse Box: Refer to the "Quick answer" section above to find the correct fuse box for the circuit you're troubleshooting.
2. Identify the Suspect Fuse: Use the diagrams provided (or the legend on the fuse box cover) to find the fuse associated with the component or system that's not working.
3. Visual Inspection: Many fuses have a clear plastic body. Look for a broken or burnt wire inside. If it's broken, the fuse is blown.
4. Use a Fuse Tester or Multimeter:
   • Fuse Tester: These inexpensive tools light up if a fuse is good. Simply touch the probes to the small metal test points on the top of the fuse.
   • Multimeter: Set your multimeter to continuity mode (looks like a speaker icon). Touch the probes to the test points on the fuse. A good fuse will show continuity (a beep or a reading close to zero ohms). A blown fuse will show no continuity (an open circuit).
5. Replace (if necessary): If the fuse is blown, replace it with a new fuse of the exact same amperage and type. Using a fuse with a higher amperage can cause serious electrical damage or a fire.

Common Blown Fuses on this Vehicle

While any fuse can blow, some are more common than others due to the loads they carry or the circuits they protect. For the 2021 Jeep Gladiator, some commonly reported blown fuses include:

• Cigar Lighter/12V Power Outlets (M03, M04, C01): These fuses are often overloaded by high-draw accessories or faulty chargers. If your 12V outlets aren't working, check these fuses first. Before replacing, unplug all accessories from the outlets.
• Trailer Tow Fuses (F14, F15, C02, C03, C05): Issues with trailer wiring, short circuits in trailer lights, or improperly connected trailers can often cause these fuses to blow. If you're experiencing trailer light or brake issues, inspect your trailer's wiring carefully, including the connector, before checking these fuses.
• Radio/Infotainment Fuses (F20, M01, M14): While less common, issues with aftermarket radio installations or internal faults within the infotainment system can sometimes lead to these fuses blowing. If your radio or Uconnect screen is black, check these fuses. If they repeatedly blow, there might be a deeper electrical issue best diagnosed by a professional.
• Blower Motor (F10): A failing blower motor or an obstruction in the blower motor assembly can cause this fuse to blow. If your AC/heater fan isn't working, check F10. If it blows again, a malfunctioning blower motor is likely the culprit.

Always verify the printed legend in your fuse box lid. The specific fuse layout and amperage can sometimes vary slightly by trim level, options, or manufacturing date. When in doubt, consult your owner's manual for the most accurate and up-to-date fuse information for your specific vehicle.

Find a trusted shop on Repairius.