The 2018 Honda Accord has two fuse boxes: one in the engine compartment and one inside the cabin. This two-box arrangement is standard for Honda’s mid-size sedans of that generation.
The question is fairly straightforward, but knowing where to find the panels and what each one protects helps with maintenance, troubleshooting, and DIY repairs. The following details the locations, what to expect in each box, and how they relate to the Accord’s electrical system.
Fuse box locations
Engine compartment fuse box
In the engine bay, the main fuse/relay box is mounted on the near side of the engine compartment. It is typically accessed by lifting a labeled plastic cover. This box protects the high‑current circuits that power the engine and major electrical systems.
- Location: Engine bay, near the left side of the engine compartment (adjacent to the fender) with a labeled "FUSE/RELAY BOX" cover.
- Access: Remove the cover to view the fuses; refer to the diagram on the cover or in the owner's manual to identify circuits.
For most owners, this engine compartment box is the first stop when diagnosing power-related issues affecting the engine, charging system, or other high‑current circuits.
Interior fuse box
The interior fuse box is located inside the vehicle, typically behind a panel on the left side of the dashboard near the driver’s door. Access is gained by removing a small panel or cover on the lower dash or kick panel area. This box contains fuses for interior electronics and convenience features.
- Location: Behind the left‑side lower dash panel (driver’s side), usually accessed by removing a small panel near the steering column.
- Access: Use the diagram on the panel or in the manual to identify the appropriate fuse for a given interior circuit.
Electrical problems inside the cabin, such as dash lighting, power windows, and infotainment, are commonly diagnosed with checks of the interior fuse box.
What the fuse boxes protect
These two panels shield different parts of the Accord’s electrical system. The engine compartment box protects major power distribution and engine‑related circuits, while the interior box handles cabin electronics and accessories.
- Engine compartment: Fuses dedicated to major systems like engine management, charging, ABS, and other high‑current circuits.
- Interior: Fuses for lighting, climate control, audio/infotainment, power windows, mirrors, and related accessories.
Always consult the owner’s manual or the fuse box diagrams on or inside the covers for exact fuse assignments, as layouts can vary by trim and region.
Summary
In brief, a 2018 Honda Accord uses two fuse boxes—one in the engine compartment and one inside the cabin. Knowing their locations, how to access them, and how to read the diagrams can save time when diagnosing electrical issues and replacing blown fuses.