Where to Find the Main Fuse on a 2013 Honda Civic

The main fuse on a 2013 Honda Civic is located in the under-hood fuse/relay box on the driver’s side of the engine bay, near the battery. It’s a large, high-amperage “fusible link” (typically around 100 A) labeled MAIN or BATTERY and is bolted in place rather than a simple push-in blade fuse. This is distinct from the smaller fuses inside the cabin.

Exact Location and How to Access It

The main fuse is housed in the primary fuse/relay box under the hood. The steps below explain how to locate and open the box, and how to identify the main fuse inside.

1. Open the hood and stand at the driver’s side fender. Look just behind the headlight and next to the 12V battery.
2. Find the black plastic under-hood fuse/relay box; it has a removable cover with a diagram on the underside.
3. Release the retaining clips and lift off the cover. Refer to the diagram printed inside the cover for fuse positions and labels.
4. Identify the large, bolted fusible link labeled MAIN, BATT, or Battery (commonly around 100 A). It is larger than standard blade fuses and secured with small bolts.

Once the cover is off, the diagram will point you to the correct position. The main fuse will stand out because of its size and bolted connections compared to smaller blade fuses.

What the Main Fuse Looks Like

Recognizing the main fuse helps ensure you’re working on the correct component, especially since several high-amperage fuses live in the same box.

• Form factor: A large, bolted “fusible link” or multi-fuse block, not a small blade fuse.
• Markings: Typically labeled MAIN, BATTERY, or similar on the cover diagram; amperage commonly around 100 A (check your cover for the exact rating).
• Neighbors: Other big fuses nearby may include EPS (electric power steering), ABS/VSA, and blower motor fuses with 40–70 A ratings.

Because the main fuse feeds multiple downstream circuits, it’s usually the highest-amp fuse in the box and may be integrated into a small sub-block.

Trim and Model Notes

While the location is consistent across the 2013 Civic lineup, small layout differences can exist between trims.

• LX/EX/EX-L: Main fuse is inside the under-hood fuse/relay box as described.
• Si: Layout is similar; the main fuse remains in the under-hood fuse/relay box, but labels and ratings can vary slightly.
• Hybrid: The 12V system’s main fuse is still in the under-hood fuse/relay box. Do not confuse this with high-voltage hybrid system fuses, which should only be serviced by trained technicians.

Always verify against the diagram on your specific vehicle’s fuse-box cover, as labels and amperage can vary by trim and market.

Basic Replacement and Safety Guidance

If you suspect the main fuse is blown, use the following guidelines. Because it is bolted in, replacement is more involved than a standard blade fuse.

1. Safety first: Turn the ignition off, remove the key, and disconnect the negative battery terminal to avoid shorts.
2. Access: Remove the under-hood fuse/relay box cover and confirm the main fuse location via the diagram.
3. Test: Use a multimeter or continuity tester across the fuse’s test points; zero continuity indicates a blown fuse.
4. Remove: Unbolt the main fuse (typically 10 mm fasteners). Keep track of hardware and any small bus bars.
5. Replace: Install an identical, OEM-spec fuse with the same amperage rating. Tighten the bolts snugly and per service manual guidance; do not overtighten.
6. Reconnect: Reattach the negative battery terminal, then confirm systems power up normally.

If you’re unsure at any step, consult a professional. Incorrect replacement can cause electrical damage or recurring failures.

Common Signs the Main Fuse Has Blown

Before pulling the fuse, these symptoms can help confirm you’re chasing the right issue.

• No electrical power in the vehicle (no dash lights, no crank) despite a charged battery.
• Multiple major systems dead simultaneously (e.g., power steering, HVAC blower, interior electronics).
• A visible break or burn mark in the fusible link when inspected.
• Immediate fuse failure again after replacement, indicating a short or wiring fault that needs diagnosis.

Because the main fuse protects core power distribution, a blown main fuse typically points to a significant short circuit or incorrect jump-starting procedure.

Helpful References

For precise identification and procedures, the following sources are recommended.

• 2013 Honda Civic Owner’s Manual: Fuse locations and diagrams (under-hood fuse/relay box section).
• Honda service manual: Detailed replacement steps and torque guidance for bolted fuses.
• Fuse-box cover diagram on your vehicle: The most accurate, vehicle-specific labeling.

Verify your trim’s exact labeling and amperage in the documentation and on the fuse-box cover, as minor differences exist between models and markets.

Summary

On a 2013 Honda Civic, the main fuse is a large, bolted high-amperage fusible link located in the under-hood fuse/relay box on the driver’s side near the battery. Remove the fuse-box cover, check the underside diagram, and look for the MAIN or BATTERY fuse (commonly around 100 A). If replacement is needed, disconnect the battery first and install an identical OEM-spec fusible link, or seek professional service if you’re unsure.

How many fuse boxes does a 2013 Honda Civic have?

The vehicle’s fuses are contained in three fuse boxes. The primary under-hood fuse box is in the engine compartment on the driver’s side.

Where is the starter relay located on a 2013 Honda Civic?

The 2013 Honda Civic’s starter relay is located in the under-hood fuse box, which is typically found on the right side of the engine bay. You can open the cover to find the fuse box diagram and locate the specific “ST” or “Starter” relay.
 
This video shows the location of the fuse box under the hood of the 2013 Honda Civic: 1mGlobal CommerceYouTube · Sep 20, 2023
To find the starter relay: 

1. Locate the under-hood fuse box: Open the hood and find the large black box on the right side of the engine bay.
2. Open the cover: The box has clips that you’ll need to push to open the lid.
3. Find the diagram: Inside the fuse box, you’ll see a diagram on the lid that labels the location of each fuse and relay.
4. Identify the starter relay: Look for the relay labeled “ST” or “Starter”.

You can watch this video to learn how to locate and troubleshoot the main relay in the under-dash fuse box of a Honda Civic: 1mFixbookYouTube · Feb 8, 2020
If you’re experiencing starting issues: 

• Check the starter relay and fuses: The most common culprits are a bad starter relay or a blown fuse.
• Swap relays: If you can identify another similar relay (like the horn relay), you can temporarily swap them to see if the starter works.
• Inspect wiring: Check the wiring for any looseness or corrosion, especially around the fuse box.

Where is the main fuse on a 2014 Honda Civic?

Side. And the footwell. Here. Okay you’re going to have the diagram printed right there i mean it’s a sticker showing you which fuse is which and the fuse is right above this diagram.

Where is the main power fuse?

The main fuse is usually located in a fuse box under the hood, near the vehicle’s battery, though some vehicles may have additional fuse panels or the main fuse in a different location like the trunk. Consult your vehicle’s owner’s manual to find the precise location of the fuse box and the main fuse, which may be labeled as “battery”.
 
Steps to find your main fuse:

1. 1. Check the owner’s manual: This is the most reliable way to find the exact location of the fuse box and main fuse for your specific car. 
2. 2. Look under the hood: The main fuse box is often located near the battery, often with a cover that needs to be pressed or has tabs to release it. 
3. 3. Check the lid of the fuse box: Many fuse boxes have a diagram or label on the lid indicating the location of the main fuse. 
4. 4. Look for secondary fuse panels: Some vehicles have another fuse box inside the passenger compartment, usually behind a removable panel or under the dashboard. 
5. 5. Consider the trunk: In some cases, particularly with certain vehicle designs or if you cannot find it under the hood, the battery and fuse box may be located in the trunk.