2025 Nissan Altima Fuse Box Diagram & Amperage Ratings

As an ASE-certified master technician, one of the most common issues I see pulling into the shop is a sudden electrical failure. Whether your radio stops working, the blower motor won't kick on, or you’ve lost your 12V power outlets to charge your phone, the very first place you should always check is the fuse box.

If you are working on a 2025 Nissan Altima, you have a highly computerized vehicle. The Altima uses Nissan's Intelligent Power Distribution Module (IPDM) in the engine bay alongside a traditional cabin fuse box. Below is your comprehensive guide to the fuse box locations, amperage ratings, and circuit diagrams for the 2025 Nissan Altima.

Disclaimer: Fuse configurations can vary depending on your specific trim level (S, SV, SR, SL) and powertrain (2.5L or 2.0L VC-Turbo). Always verify against the printed legend located on the inside of your fuse box lid before replacing a fuse.

Quick Answer: 2025 Nissan Altima Fuse Box Locations

The 2025 Nissan Altima has two primary fuse box locations you need to know about:

1. Passenger Compartment (Cabin) Fuse Box: Located inside the vehicle on the driver’s side. It is situated in the lower dash kick-panel area, just to the left of the steering column. You will need to pull off the plastic cover to access the fuses.
2. Engine Compartment Fuse Box (IPDM E/R): Located under the hood on the driver’s side, positioned between the battery and the fender. It has a black plastic cover with a push-tab release.

Passenger Compartment (Cabin) Fuse Box Diagram

This fuse box handles most of the interior accessories, infotainment, and localized cabin control modules.

Note: The cabin fuse box also houses several built-in micro-relays for the ignition and accessory power, though these are typically non-serviceable and integrated into the BCM (Body Control Module).

Engine Compartment Fuse Box (IPDM) Diagram

The Under-hood IPDM (Intelligent Power Distribution Module Engine Room) contains the heavy-duty fuses, fusible links, and relays for powertrain and exterior lighting components.

Under-Hood Relay Locations

In the same IPDM housing, you will find several critical relays. These usually include:

• Starter Relay
• Fuel Pump Relay
• Cooling Fan Relays (High/Low)
• A/C Auto Amp Relay
• Ignition Relay

Note: Some relays in modern Nissan IPDMs are soldered onto the internal circuit board and cannot be individually replaced; if one fails, the entire IPDM module must be replaced.

How to Test a Fuse Like a Pro

Don't just pull out fuses and eyeball them. Visual inspections can be deceiving, as a fuse can have a hairline fracture that is invisible to the naked eye but still breaks the circuit. Here is how ASE master techs test fuses quickly and accurately:

1. Use a Test Light or Multimeter: Set your multimeter to the continuity setting (the one that beeps) or grab a standard 12V automotive test light.
2. Turn the Key On: For circuits that only get power when the vehicle is running (like the blower motor or radio), ensure the vehicle's ignition is in the "ON" position (engine off).
3. Probe the Test Points: Look closely at the top of the blade fuse. You will see two tiny exposed metal test points.
4. Read the Results: Touch your test light to both test points on the fuse. If the test light illuminates on both sides, the fuse is good. If it only lights up on one side, the fuse has blown and is interrupting the power flow. Replace it with a fuse of the exact same amperage and color.

Common Blown Fuses on the 2025 Nissan Altima

If you own an Altima, keep an eye out for these frequent flyers in the shop:

• 12V Power Outlet / Cigar Lighter (Cabin Fuse #6 / #7): By far the most common blown fuse. Usually caused by a faulty phone charger, a coin falling into the socket, or a high-draw accessory like a tire inflator.
• A/C Compressor Clutch (Under-hood Fuse F3): If your Altima is blowing warm air but the blower motor works, check this fuse. A failing A/C clutch coil can draw too much current and pop this 10A fuse.
• Blower Motor (Cabin Fuses #2 & #3): If your cabin fan suddenly stops pushing air, these 15A fuses are your first stop before assuming the blower motor itself is dead.
• Headlights (Under-hood Fuses F4/F5): While LED lighting makes headlight fuse failures rarer on the 2025 models, any front-end collision or moisture intrusion in the headlamp assembly can short the IPDM headlight fuses.

Remember, a blown fuse is often a symptom, not the root disease. If you replace a fuse and it immediately blows again, you have a short-to-ground in the circuit. Do not put a higher-amperage fuse in its place—this is a massive fire hazard!

If you are dealing with a persistent electrical short, a failed IPDM, or complex wiring issues, don’t risk frying your ECM. Find a trusted shop on Repairius.