2016 Ram 2500 Fuse Box Diagram
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Quick answer
Your 2016 Ram 2500 has one primary fuse box, called the Power Distribution Center, located in the engine bay. There are no other factory fuse boxes in the cabin or trunk on a standard configuration.
- Under-hood Power Distribution Center: Located on the driver's side of the engine compartment, near the battery.
Under-Hood Power Distribution Center / Fuse Box
The main fuse box, or Power Distribution Center (PDC), contains the vast majority of fuses and relays for your truck. You'll find it on the driver's side of the engine bay. To open it, release the two retaining clips.
Always check the diagram printed on the underside of the fuse box lid to confirm fuse locations, as they can vary based on your truck's specific options and trim level.
Fuses
| Fuse # | Amp | Color | Circuit / Component Protected |
|---|---|---|---|
| F01 | 30A | Pink | PCM / Transmission Control |
| F03 | 25A | Natural | Trailer Tow - Brake Controller |
| F05 | 20A | Yellow | Ignition Coils / PCM |
| F06 | 20A | Yellow | Fuel Pump Motor |
| F10 | 20A | Yellow | Cigar Lighter / 12V Power Outlet (Instrument Panel) |
| F11 | 20A | Yellow | Power Outlet (Center Console) |
| F20 | 40A | Green | ABS Pump / Stability Control |
| F21 | 30A | Pink | ABS Valves / Stability Control |
| F22 | 25A | Natural | Air Suspension Control Module (if equipped) |
| F30 | 15A | Blue | A/C Clutch Compressor |
| F37 | 10A | Red | Left High-Beam Headlamp |
| F38 | 10A | Red | Right High-Beam Headlamp |
| F40 | 10A | Red | Left Low-Beam Headlamp |
| F41 | 10A | Red | Right Low-Beam Headlamp |
| F42 | 15A | Blue | Horns |
| F46 | 25A | Natural | Windshield Wipers |
| F50 | 40A | Green | Blower Motor (HVAC) |
| F53 | 30A | Pink | Radio / Infotainment (Uconnect) / Amplifier |
| F60 | 15A | Blue | Park/Tail Lights Left |
| F61 | 15A | Blue | Park/Tail Lights Right |
| F66 | 20A | Yellow | Brake Pedal Switch |
| F71 | 30A | Pink | Starter Motor Solenoid |
| F88 | 10A | Red | Airbag / Occupant Restraint Controller (ORC) |
| F90/F91 | 15A | Blue | Interior Lighting / Dash Illumination |
Relays
| Relay # | Description |
|---|---|
| K02 | A/C Clutch Relay |
| K06 | Fuel Pump Relay |
| K09 | Ignition Relay |
| K10 | Starter Motor Relay |
| K11 | Blower Motor Relay |
| K12 | Run/Start Relay |
| - | Trailer Tow Relays |
| - | Headlamp Relays |
How to test a fuse
Testing a fuse is a simple process. First, locate the fuse in question using the diagram above and pull it straight out of its socket. Sometimes a fuse puller tool is included on the fuse box lid. Hold the fuse up to the light; inside the plastic body is a small metal strip. If that strip is broken or looks burnt, the fuse is blown and needs to be replaced. If it's intact, the fuse is good. For opaque "cartridge" style fuses, you may need a multimeter set to continuity to verify if they are good.
When replacing a fuse, always use a new fuse with the same amp rating. Using a higher-rated fuse can damage the electrical components it's meant to protect and create a fire hazard.
Common blown fuses on this vehicle
-
Cigar Lighter / 12V Power Outlet (F10 / F11): This is one of the most common blown fuses. It usually happens when a faulty phone charger or other accessory is plugged in. If the fuse blows, first unplug everything from the outlets, replace the fuse, and then test the outlet with a known-good charger.
-
Fuel Pump (F06): If your truck cranks but won't start, a blown fuel pump fuse is a possible culprit. If you replace the fuse and it blows again immediately, this could indicate a short in the wiring or a failing fuel pump that is drawing too much current. The fuel pump relay (K06) is another component to check.
-
Trailer Brake Controller (F03): If your integrated trailer brake controller stops working or you get a "Service Trailer Brake System" message, this fuse is the first thing to check. Often, the issue is caused by a short in the trailer's wiring, not the truck itself. Test the fuse before connecting a trailer.
If you are experiencing repeated blown fuses or are unsure about diagnosing an electrical issue, it's best to seek professional help.
Find a trusted shop on Repairius.
Before you pull a fuse on the 2016 Ram 2500
- 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.
- Disconnect the battery before working near high-current fuses or cables.
Learn more: How fuses, relays and truck electrical systems work
More specs for the 2016 Ram 2500
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
2016 Ram 2500 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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