In modern vehicles, two fuse boxes can exist in the engine area. The exact spot for a "secondary engine compartment fuse box" is not standardized and depends on the make, model, and year. In many cars, the secondary box sits in the engine bay behind one of the strut towers or near the firewall, under a separate lid or panel. If you share your specific vehicle details, I can give precise directions.
What this fuse box does and why it matters
The secondary engine compartment fuse box typically houses fuses and relays for circuits outside the primary engine bay fuse box. These can include auxiliary power feeds, certain sensors, or components tied to engine management. Locating it is essential for diagnosing electrical issues, replacing blown fuses, or adding accessories.
How to locate it on your vehicle
Use these steps to find the secondary engine compartment fuse box. The steps are general because locations vary by maker and model.
- Open the hood and inspect the engine bay for more than one fuse box or a panel labeled FUSES or FUSE BOX. The secondary box may have its own lid or a smaller panel tucked near the firewall or the passenger side of the engine compartment.
- Check the owner's manual or the vehicle’s service manual under the Fuse/Relays section. Look specifically for "engine compartment fuse box" and "secondary fuse box" or "secondary engine bay fuse box."
- Look for a label on the underside of the cover or a nearby diagram on the fuse box lid that identifies the box and lists circuit fuses. A second box will often be labeled or numbered separately from the primary one.
- Inspect common secondary locations: near the firewall, along the passenger side of the engine bay, or behind a separate lid near the battery or strut tower. Some vehicles place it behind the brake master cylinder area or near the inertia switch.
- If in doubt, search the vehicle’s manual online by VIN or model and year. You can also consult the dealership or a repair manual for exact diagrams.
Once located, remove the lid carefully and consult the included fuse diagram to identify the circuit you need to service. If you plan to replace fuses, ensure the fuse rating matches the diagram.
What to do if you still can't locate it
Provide your make, model, and year, and I can give precise coordinates. Alternatively, a dealership or qualified mechanic can point you to the correct box and assist with fuse replacement or diagnostics.
Summary
The location of a secondary engine compartment fuse box varies by vehicle. Start with the owner's manual, inspect the engine bay for a second fuse panel, and read the lid diagram to identify circuits. If you share your exact car details, I can provide exact directions and a diagram for your model.
Where is the engine compartment fuse panel?
Engine fuse boxes are typically situated near the battery. In this vehicle, the battery is on the driver's side, and there is a fuse box right above it with a black plastic cover to protect the fuses. On the passenger side, there is also a battery, and the fuse box is located nearby.
Where is the secondary fuse box located?
The secondary under-hood fuse box is next to the battery. To open it, push the tabs as shown. If something electrical in your vehicle stops working, check for a blown fuse first. Determine from the chart on pages and , or the diagram on the fuse box lid, which fuse or fuses control that device.
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How to reset a tripped fuse box?
So you just go out to your breaker. Panel. Find the tripped breaker the tripped breaker is right here. If you simply push it back to the closed or reset.
Can a blown fuse trigger an engine light?
A blown ECM fuse can lead to several issues such as engine stalling, rough idling, and loss of power. It may also trigger the check engine light and store error codes. Identifying a blown ECM fuse involves inspecting the fuse box for any damaged fuses and using a multimeter to check for continuity.