2014 Volvo VNL Fuse Box Diagram & Amperage

Quick Answer

The 2014 Volvo VNL typically features three main fuse box locations: one under the hood, one behind the passenger kick panel in the cab, and another in the trunk/sleeper area.

Under-Hood Fuse Box

The under-hood fuse box, often located on the driver's side near the firewall, houses fuses and relays for critical engine and chassis functions. Always consult the diagram on the fuse box lid for the exact layout, as variations can occur based on specific VNL configurations.

Cab Passenger Kick Panel Fuse Box

This fuse box is typically found behind the passenger side kick panel in the cab, often requiring removal of a cover. It generally contains fuses for interior accessories and cabin electronics. Again, check your specific vehicle's fuse box lid for accurate information.

Trunk/Sleeper Area Fuse Box

For VNL models with a sleeper, an additional fuse box is often located in the trunk or sleeper compartment. This fuse box typically handles power for sleeper amenities and rear lighting. The exact location can vary, so consult your owner's manual or look for a bolted-on panel.

How to Test a Fuse

Testing a fuse is a straightforward process. First, ensure the vehicle's ignition is off to prevent accidental shorts. Locate the suspected blown fuse. Most modern fuses have a clear plastic body, allowing for a visual inspection of the filament. If the metal strip inside is broken or burnt, the fuse is blown.

For a more accurate test, use a multimeter or a fuse tester. With a multimeter set to continuity mode (or ohms), touch the probes to the two test points on the top of the fuse. A good fuse will show continuity (a very low resistance reading, or a beep if your meter has an audible continuity feature). If there's no continuity, the fuse is blown and needs replacement.

When replacing a fuse, always use a fuse of the EXACT same amperage rating. Using a fuse with a higher amperage can lead to wiring damage or electrical fires, as it allows more current to flow than the circuit is designed to handle.

Common Blown Fuses on This Vehicle

While any fuse can blow, certain circuits on a 2014 Volvo VNL are more prone to issues due to their constant use or exposure to various conditions. If you experience an electrical problem, these are good places to start your diagnostics:

• Cigarette Lighter / 12V Outlets: These fuses (F3 in the cab fuse box, F1 in the sleeper fuse box) frequently blow due to overloading from charging devices, powering accessories, or using faulty adapters. If your phone charger suddenly stops working, check these first.
• Headlights (Low/High Beam): Fuses F5-F8 in the under-hood fuse box protect individual headlight circuits. Frequent blowing of these fuses could indicate a short in the wiring, a faulty bulb, or an issue with the headlight switch or relay. If one headlight goes out, start here.
• Trailer Brake Controller: Fuse F14 in the under-hood fuse box (and F5 in the sleeper fuse box for auxiliary trailer power) is crucial for trailer braking. Issues with trailer wiring, shorts in the trailer itself, or problems with the controller can cause this fuse to blow, leading to a loss of trailer braking functionality. Always inspect trailer wiring for damage if this fuse blows.
• Blower Motor: Fuse F13 in the under-hood fuse box protects the blower motor. If your HVAC fan stops working entirely, this fuse is a prime suspect. A failing blower motor or a blockage in the blower fan can draw excessive current and blow the fuse.
• Radio/Infotainment System: Fuse F1 in the cab fuse box protects your radio. If your radio suddenly goes dead, this is the first place to check. Sometimes, an internal fault in the radio or a short in the speaker wiring can cause this fuse to blow.

Always check the printed legend on the fuse box lid for your specific vehicle's configuration, as fuse assignments can vary slightly between trim levels and production runs.

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