There are two fuse boxes on a 2018 Honda Fit: one in the engine compartment and one inside the cabin on the driver's side. The exact fuses and their locations are shown on the covers and in the owner’s manual.
In this article, you’ll learn where to locate both fuse boxes, how to access them, and how to identify which fuse protects which system. This can help you diagnose simple electrical issues without professional help.
Engine compartment fuse box (Power Distribution Box)
The engine bay fuse box is mounted in the engine compartment and houses fuses and relays for major systems. Use this as your first stop if you’re troubleshooting under-hood electrical issues.
Location: In the engine compartment on the driver’s side, near the left fender/strut area. It is a black plastic box with a removable cover.
How to access: Open the hood, release the latch on the fuse box cover, and lift the lid. The underside of the cover displays a diagram showing fuse numbers and their corresponding circuits.
What it powers: Fuses and relays for essential systems such as the engine control unit (ECU), fuel system, ignition, power steering, ABS, headlights, cooling fans, horn, and other high‑demand components.
How to identify a blown fuse: With the cover removed, locate the fuse based on the diagram, pull it out with a fuse puller or a small pair of pliers, and inspect the metal element. Replace only with a fuse of the same amperage rating.
Safety tips: Always turn off the ignition and remove the key before inspecting or replacing fuses. Do not substitute a fuse with a higher rating to fix a problem.
Be sure to consult the diagram on the inside of the engine compartment box lid for the exact fuse numbers and circuits if you’re troubleshooting a specific symptom.
Interior cabin fuse box
The interior fuse box is located inside the cabin on the driver’s side and protects many of the vehicle’s interior systems and conveniences. This box is typically hidden behind a knee panel or under the dash near the driver’s seat.
Location: Inside the cabin on the driver’s side, usually behind a removable panel beneath the dashboard or near the left footwell.
How to access: Remove the panel cover; the fuse diagram is printed on the inside of the lid or nearby in the owner’s manual.
What it powers: Fuses for interior lights, dash instruments, power windows, power door locks, audio system, HVAC controls, and sometimes SRS components and other dashboard electronics.
How to identify a blown fuse: Match the fuse number to the diagram, then pull the fuse with a fuse puller and inspect the element. Replace with the same amperage rating.
Safety tips: As with the under‑hood box, ensure the ignition is off before handling fuses, and do not use a higher-rated fuse to bypass a fault.
If a fuse keeps blowing or you’re unsure which fuse corresponds to a symptom, reference the owner’s manual for the exact circuit map or contact a Honda technician for help.
Summary
The 2018 Honda Fit keeps its electrical system organized with two fuse boxes: an engine compartment power distribution box and an interior cabin fuse box on the driver’s side. Always start by inspecting the appropriate fuse with the cover’s diagram, and replace only with the correct amperage rating. For persistent electrical issues, consult the owner’s manual or a qualified technician.