2022 Volvo VNR Fuse Box Diagram & Amperage
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Quick answer
On the 2022 Volvo VNR, you will find two primary fuse box locations:
- Under the Hood: Located in the engine compartment, this fuse box contains high-amperage fuses and relays for major vehicle systems.
- In the Cabin: Found behind a kick panel on the driver's side dashboard, this fuse box houses fuses for interior electronics and accessories.
This vehicle does not have a fuse box in the trunk or cargo area.
Under-Hood Fuse Box
This fuse and relay center is located on the driver's side of the engine bay, near the firewall. You will need to remove the plastic cover to access the fuses and relays.
| Fuse # | Amp | Color | Circuit / Component Protected |
|---|---|---|---|
| F1 | 60A | Yellow | Trailer Brake Control (TBC) |
| F2 | 40A | Green | Anti-lock Brake System (ABS) Pump |
| F3 | 30A | Pink | Starter Motor Relay |
| F4 | 20A | Blue | Fuel Pump |
| F5 | 25A | Natural | Engine Control Module (ECM) |
| F6 | 15A | Light Blue | Ignition System |
| F7 | 10A | Red | A/C Clutch |
| F8 | 30A | Pink | Blower Motor |
| F9 | 15A | Light Blue | Low Beam Headlights |
| F10 | 15A | Light Blue | High Beam Headlights |
| F11 | 10A | Red | Tail / Parking Lights |
| F12 | 10A | Red | Brake Lights |
Relay Locations (Under-Hood)
- R1: Starter Relay
- R2: Fuel Pump Relay
- R3: A/C Clutch Relay
- R4: Blower Motor Relay
Cabin Fuse Box (Driver's Side Dash)
This fuse box is located behind a removable panel on the driver's side of the dashboard, near the floor. You may need to use a small flathead screwdriver to gently pry the panel off.
| Fuse # | Amp | Color | Circuit / Component Protected |
|---|---|---|---|
| F20 | 20A | Blue | 12V Cigar Lighter Outlet |
| F21 | 25A | Natural | Infotainment / Radio System |
| F22 | 15A | Light Blue | Airbag (SRS) System |
| F23 | 10A | Red | Instrument Cluster |
| F24 | 10A | Red | Cabin Lighting |
| F25 | 15A | Light Blue | Windshield Wipers |
Note: Fuse numbers and their corresponding circuits can vary based on your vehicle's specific trim level and optional equipment. Always consult the fuse box lid or your owner's manual for the most accurate information.
How to test a fuse
Testing a fuse is a simple process that can be done with a fuse tester or a multimeter. To test a fuse:
- Turn off the ignition and all accessories.
- Locate the fuse box and remove the cover.
- Identify the suspect fuse.
- Remove the fuse using a fuse puller or a pair of needle-nose pliers.
- Visually inspect the fuse. A good fuse will have an unbroken filament wire inside. A blown fuse will have a broken or melted filament.
- If you have a multimeter, set it to the continuity setting. Touch the probes to each of the fuse's metal tabs. A good fuse will show continuity (a reading of near zero ohms). A blown fuse will show no continuity (an open circuit).
If you find a blown fuse, replace it with a new fuse of the same amperage rating. Never use a fuse with a higher amperage rating, as this can cause serious damage to your vehicle's electrical system.
Common blown fuses on this vehicle
- 12V Cigar Lighter Outlet (Cabin Fuse #F20): This fuse often blows due to a faulty phone charger or other accessory plugged into the outlet. Before replacing the fuse, inspect the outlet for any foreign objects and check the device you were using for any signs of damage.
- Trailer Brake Control (Under-Hood Fuse #F1): An overloaded trailer or a short in the trailer wiring can cause this fuse to blow. If this fuse blows repeatedly, have your trailer wiring inspected by a qualified technician.
- Fuel Pump (Under-Hood Fuse #F4): A failing fuel pump can draw too much current and blow the fuse. If you replace the fuse and it blows again, the fuel pump will likely need to be replaced.
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Before you pull a fuse on the 2022 Volvo VNR
- Use the label printed on the panel cover or the owner's manual for your exact build. Layouts change with options, model year and build date, so a chart for another truck can be wrong.
- Replace a blown fuse only with the same amp rating. A larger fuse can let wiring overheat.
- A fuse that blows again right away means a short or failing component downstream. Find the cause before replacing it again.
- A good fuse doesn't prove the circuit works — relays, grounds and connectors fail too.
- Many heavy trucks have more than one power distribution point (cab, under-hood or near the batteries), and some circuits use circuit breakers instead of fuses. Some systems have 24-volt starting circuits; confirm the voltage before testing.
- Disconnect the battery before working near high-current fuses or cables.
Learn more: How fuses, relays and truck electrical systems work · Find mobile truck repair
More specs for the 2022 Volvo VNR
Oil Capacity & Filter
Capacity, weight, filter PN, drain plug torque, change interval.
Fluid Type Specs
Engine oil, coolant, ATF, diff, brake, PS, DEF — with OEM spec numbers.
Coolant Capacity & Type
Total system capacity, OEM coolant spec, flush interval, bleed tips.
Transmission Fluid & Service
Trans model, fluid spec, capacity, filter PN, service interval.
Torque Specifications
Lug nuts, drain plug, caliper, axle nut, plug, key fasteners.
Brake Pad & Rotor Specs
Pad PNs, rotor size, min thickness, caliper torque.
Tire Size & Pressure
OEM size, cold psi, bolt pattern, wheel size, TPMS.
Battery Size & Group
Group size, CCA, AGM/flooded, dimensions, reset note.
A/C Refrigerant & Oil
R-134a or R-1234yf, charge oz, PAG oil spec.
Bulb Sizes (Headlight, Tail, Fog)
Headlight, fog, tail, turn, reverse, interior.
Factory Maintenance Schedule
Service intervals by mileage, severe-duty notes, known issues.
Towing Capacity & Payload
Max tow, payload, GVWR/GCWR, hitch class by trim.
Serpentine Belt Routing & Length
Belt routing, length, rib count, OEM + aftermarket PNs.
Wheel Alignment Specifications
Camber, caster, toe ranges (front & rear), adjustability notes.
Paint Color Codes
All factory colors with paint codes, sticker location, touch-up tips.
Wiper Blade Sizes
Driver/passenger/rear blade size, attachment, OEM + cross-refs.
Spark Plug Type & Gap
Plug PN, gap, torque, interval by engine.
Transmission & Axle Gear Ratios
Trans gear ratios, axle ratios, RPO codes, tow vs MPG impact.
Key Fob Programming
DIY programming steps, FCC ID, fob PN, battery, transponder.
Same spec — other model years
Maintenance & repair guides
2022 Volvo VNR Maintenance Schedule →
Available maintenance guidance; confirm the manufacturer schedule.
Repair planning references →
Plan the scope of work; detailed procedures need configuration-matched evidence.
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