The 2018 Honda Civic has two fuse boxes: an interior fuse box located behind the left-side dashboard panel and an engine bay fuse box near the battery. Both are accessible for inspections, fuse replacements, and quick troubleshooting.
In this article, you’ll find where to locate each box, what to expect on the covers, and how to identify the fuses you need to check. For precise fuse numbering and amperages, refer to the diagram on each lid and the owner’s manual.
Locations of the fuse boxes
The following list identifies the two main fuse boxes in the 2018 Civic and how to reach them.
- Interior fuse box: Located inside the vehicle, on the left side of the dash beneath the driver’s knee area. Access usually involves removing a small panel or cover from the lower portion of the dash.
- Engine compartment fuse box: Located in the engine bay near the battery. The lid is labeled FUSE/RELAY BOX, and the diagram on the underside shows which fuses control various circuits.
With both boxes, the fuse labels and amperage ratings are printed on the inside of the lid or on the panel itself, making it easier to locate the correct fuse when replacements are needed.
Interior fuse box details
Access and labeling
The interior fuse box is designed for quick access to common systems such as lighting, power windows, radio, and certain dashboard electronics. After opening the panel, you’ll see a fuse map that corresponds to specific circuits. If a fuse is blown, replace it with the same amperage rating to avoid electrical problems.
Engine compartment fuse box details
Access and labeling
The engine bay fuse box is intended for higher-current circuits and components such as the charging system and engine electronics. Open the lid to view the fuse map; use the diagram to locate the correct fuse, pull it out with a fuse puller or needle-nose pliers, and replace with the same type and rating. If a fuse continues to blow, there may be a deeper electrical issue that should be inspected by a technician.
What to do if a fuse blows
First, identify the affected system using the fuse map on the lid. Then replace the blown fuse with a new one of the same amperage. If the new fuse blows again, discontinue use of the affected circuit and seek professional diagnostics to prevent further damage.
Summary
For a 2018 Honda Civic, start by checking the interior fuse box behind the left dash panel and the engine compartment fuse box near the battery. Use the diagrams on the lids to identify the correct fuse, replace with the same amperage, and consult the owner’s manual or a dealer if you encounter recurrent fuse issues. Regular checks can help prevent electrical problems and keep your vehicle running smoothly.