2020 Jeep Grand Cherokee Fuse Box Diagram & Amperage

Quick Answer

The 2020 Jeep Grand Cherokee features three main fuse box locations: one under the hood, a second in the passenger cabin behind the kick panel, and a third in the rear cargo area.

Under-Hood Fuse Box

This fuse box, also known as the Power Distribution Center (PDC), is located in the engine bay, typically on the driver's side, near the battery. It houses many of the larger fuses and relays for critical vehicle systems.

Relays in the Under-Hood Fuse Box

The under-hood fuse box also contains several important relays. Common relays include:

• R1: Starter Relay
• R2: Fuel Pump Relay
• R3: Run/Accessory Relay
• R4: HVAC Blower Relay
• R5: Headlight Relay (Low Beam)
• R6: Headlight Relay (High Beam)
• R7: A/C Clutch Relay
• R8: Horn Relay

Note: Relay locations and functions may vary slightly depending on your Grand Cherokee's trim level and optional equipment. Always refer to the legend on your fuse box lid for precise identification.

Cabin Fuse Box (Passenger Side Kick Panel)

Located inside the vehicle, behind the passenger side kick panel (near the floorboard), this fuse box primarily handles interior electrical components and accessories.

Note: Fuse numbering and functions can vary by trim and optional features. Always consult the diagram on your fuse box cover for accurate information.

Rear Cargo Area Fuse Box

Some 2020 Jeep Grand Cherokee models, especially those with certain towing packages, additional power outlets, or advanced rear-end electronics, may have a third fuse box located in the rear cargo area, often behind a trim panel on the side.

Always verify fuse details with the specific legend provided in your vehicle's fuse box lid or owner's manual, as variations may occur based on trim level and installed options.

How to Test a Fuse

Testing a fuse is a straightforward process:

1. Safety First: Always turn off the ignition and remove the key (or ensure the vehicle is off for push-button start) before inspecting or replacing fuses.
2. Locate the Fuse: Refer to the diagrams above and the legend on your fuse box lid to find the suspected fuse.
3. Visual Inspection: Most modern blade-type automotive fuses have a small wire visible through a clear plastic body. If this wire is broken or melted, the fuse is blown and needs replacement.
4. Using a Multimeter (for a more precise test):
   • Set your multimeter to the continuity or ohm setting.
   • Touch one probe to each metal test point on top of the fuse (or the metal blades if removed).
   • A good fuse will show very low resistance or indicate continuity. A blown fuse will show no continuity or an open circuit.
5. Using a Fuse Tester: These simple tools light up when touched to a good fuse, indicating power is flowing through it.
6. Removal and Replacement: Use the fuse puller (often located in the fuse box lid or attached to it) to gently remove the fuse. Always replace a blown fuse with a new fuse of the exact same amperage rating and color. Using a fuse with a higher amperage can lead to serious electrical damage or fire.

Common Blown Fuses on This Vehicle

While any fuse can blow, some fuses in the 2020 Jeep Grand Cherokee are more commonly affected due to heavy usage or high-current accessories:

• Cigar Lighter / 12V Power Outlets (F30, F31, F50): These are frequently blown by devices drawing too much power, or if foreign objects (like coins) short out the socket. If your phone charger or air compressor isn't working, check these first.
• Radio / Infotainment (F32): Issues with aftermarket installations or a short in the system can sometimes blow this fuse, leading to a blank screen or no audio.
• Blower Motor (F06): If your climate control fan stops working on all speeds, this fuse (or the associated relay) is a common culprit, especially if the blower motor itself is failing.
• Headlights (F07, F08, F09, F10): While less common without an underlying issue (like a shorted wire or failing bulb), if one or both headlights are out, check these fuses.
• Trailer Tow Connectors (F20, F51, F54): Heavy trailer loads, shorts in trailer wiring, or issues with aftermarket trailer brake controllers can cause these fuses to blow.

What to check first: If you have an electrical issue, always start by checking the most obvious and easily accessible fuses related to the affected component. For example, if your phone charger stops working, check the 12V outlet fuse before digging deeper.

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