Nissan Altima 2018 Fuse Replacement
Having an electrical issue? It could be a blown fuse — an easy fix you can do yourself.
Follow the steps below to find and replace the fuse:
Step 1: Find the Fuse Box
In your Nissan Altima 2018, the interior fuse box is typically located under the dashboard on the driver's side. Some vehicles also have an additional fuse box in the engine compartment. Check your owner's manual or the fuse box cover for the exact location.
Step 2: Identify the Corresponding Fuse
Below is the complete fuse list for your vehicle. Find the circuit that isn't working and note the fuse number and amperage.
Instrument Panel Fuse Box
| Fuse # | Function | Amperage |
|---|---|---|
| 1 | Auto Light System, Back-up Lamp, Body Control Module, CVT Control System, Daytime Light System, Door Mirror, Engine Control System, Front Fog Lamp, Front Wiper and Washer System, Homelink Universal Transceiver, Headlamp, Illumination, Intelligent Key System, Inside Mirror, Interior Room Lamp, NVIS, Moonroof, Parking Lamps, License Plate Lamps, Tail Lamps, Power Distribution System, Power Door Lock System, Power Window System, Rear Window Defogger, Tire Pressure Monitoring System, Turn Signal and Hazard Warning Lamps, Vehicle Security System, Warning Chime System | 10 |
| 2 | Heated Steering Wheel | 10 |
| 3 | Body Control Module, Intelligent Key System, Power Door Lock System, Power Window System, Vehicle Security System | 15 |
| 4 | Body Control Module, Intelligent Key System, Power Door Lock System, Power Window System, Vehicle Security System | 15 |
| 5 | Not Used | 10 |
| 6 | Not Used | |
| 7 | Not Used | |
| 8 | Not Used | |
| 9 | Body Control Module, Door Mirror, NVIS, Intelligent Key System, Power Distribution System, Tire Pressure Monitoring System | 5 |
| 10 | Back-up Lamp, Body Control Module, Brake Control System, CVT Shift Lock System, Engine Control System, Intelligent Key System, Power Distribution System, Stop Lamp, Intelligent Key System, NVIS, Power Distribution System | 10 |
| 11 | Not Used | |
| 12 | BOSE Audio: Display Audio System, Navigation System | 15 |
| 13 | CVT Control System, Daytime Light System, Front Fog Lamp, Headlamp, Illumination, Intelligent Key System, Combination Meter, NVIS, Parking Lamps, License Plate Lamps, Tail Lamps, SRS Air Bag Control System, Tire Pressure Monitoring System, Turn Signal and Hazard Warning Lamps, Vehicle Security System, Warning Chime System | 10 |
| 14 | Air Conditioner Control | 5 |
| 15 | BASE Audio System, Display Audio System, Navigation System, Driver Assistance System | 20 |
| 16 | Body Control Module, Power Distribution System | 5 |
| 17 | Air Conditioner Control, Power Distribution System, Body Control Module | 15 |
| 18 | Not Used | |
| 19 | Power Distribution System | 15 |
| 20 | Power Socket | 20 |
| 21 | Power Socket | 20 |
| 22 | Rear Window Defogger, Body Control Module | 10 |
| 23 | Rear Window Defogger, Body Control Module | 15 |
| 24 | Rear Window Defogger, Body Control Module | 15 |
| 25 | Accessory Relay 2 | 5 |
| 26 | Not Used | 5 |
| 27 | Air Conditioner Control, Power Distribution System, Body Control Module | 15 |
| 28 | Heated Seat | 15 |
| 29 | CVT Control System, Driver Assistance System, Engine Control System, Navigation System | 5 |
| 30 | Air Conditioner Control, Compass, Heated Steering Wheel, Homelink Universal Transceiver, Inside Mirror, Power Distribution System, Rear Window Defogger, Engine Control Module, Power Distribution System | 10 |
| 31 | Brake Control System, Charging System, CVT Control System, Daytime Light System, Electronically Controlled Power Steering System, Engine Control System, Front Fog Lamp, Headlamp, Illumination, Combination Meter, Parking Lamps, License Plate Lamps, Tail Lamps, SRS Air Bag Control System, Tire Pressure Monitoring System, Turn Signal and Hazard Warning Lamps, Warning Chime System | 5 |
| 32 | SRS Air Bag Control System | 10 |
| 33 | Not Used | |
| S | Spare fuses | |
| Relays | Spare | |
| R1 | Ignition 2 | |
| R2 | Blower Motor | |
| R3 | Rear Window Defogger | |
| R4 | Accessory 1 |
Engine Compartment Fuse Box №1 Fuse Box
| Fuse # | Function | Amperage |
|---|---|---|
| 34 | Headlamp High, Auto Light System, Daytime Light System | 10 |
| 35 | Headlamp High, Auto Light System, Daytime Light System | 10 |
| 36 | Headlamp Low, Auto Light System, Daytime Light System | 15 |
| 37 | Headlamp Low, Auto Light System, Daytime Light System | 15 |
| 38 | Engine Control Module | 10 |
| 39 | Engine Control Module | 10 |
| 40 | Engine Control Module | 15 |
| 41 | Front Wiper Relay | 30 |
| 42 | Front Fog Relay | 15 |
| 43 | Auto Light System, Daytime Light System | 10 |
| 44 | Engine Control Module | 15 |
| 45 | Engine Control Module | 10 |
| 46 | BCM (Body Control Module), CVT Control System, Engine Control System, Intelligent Key System, NVIS, Starting System | 10 |
| 47 | Fuel Pump Relay | 15 |
| 48 | Engine Control Module | 10 |
| 49 | Brake Control System, Electronically Controlled Power Steering System | 10 |
| 50 | BCM (Body Control Module), Driver Assistance System, Front Wiper and Washer System | 10 |
| 51 | Parking Lamps, License Plate Lamps, Tail Lamps | 10 |
| 52 | Auto Light System, Parking Lamps, License Plate Lamps, Tail Lamps | 10 |
| 53 | Air Conditioner Relay | 10 |
| 54 | Not Used | |
| 55 | Throttle Control Motor Relay | 15 |
| 56 | Engine Control Module | 10 |
Engine Compartment Fuse Box №2 Fuse Box
| Fuse # | Function | Amperage |
|---|---|---|
| 57 | Not Used | |
| 58 | Not Used | |
| 59 | BCM (Body Control Module), Intelligent Key System | 10 |
| 60 | CVT Control System | 10 |
| 61 | Not Used | |
| 62 | Charging System | 10 |
| 63 | Horn, Intelligent Key System, Vehicle Security System | 15 |
| 64 | Not Used | |
| G | Brake Control System | 40 |
| H | Brake Control System | 40 |
| I | Auto Light System, Back-up Lamp, Base Audo System, BCM (Body Control Module), CVT Shift Lock System, Door Mirror, Daytime Light System, Display Audio System, Front Fog Lamp, Front Wiper And Washer System, Headlamp, Illumination, Intelligent Key System, Interior Room Lamp, Moonroof, Navigation System, NVIS, Parking Lamps, License Plate Lamps, Tail Lamps, Power Distribution System, Power Door Lock System, Power Seat For Driver Side, Power Window System, Rear Window Defogger, Tire Pressure Monitoring System, Turn Signal And Hazard Warning Lamps, Trunk Lid Opener, Vehicle Security System, Warning Chime System | 40 |
| J | Not Used | |
| K | Not Used | |
| L | Engine Control Module | 40 |
| M | Ignition Relay 2 (Fuses 28, 29, 30, 31, 32) | 40 |
| N | Engine Control Module | 40 |
| Relays | Spare | |
| R1 | Cooling Fan 3 | |
| R2 | Stop Lamp | |
| R3 | Horn | |
| R4 | Cooling Fan 2 |
Step 3: Check the Fuse
Use the plastic fuse puller, typically found in the fuse box, to remove the fuse. Hold it up to a light source. If the metal filament inside is broken or charred, the fuse is bad and needs to be replaced.
Step 4: How to Get a Replacement
You can buy a replacement fuse at any auto parts store. Make sure you match the **amperage (A)** and **physical size** of the fuse exactly. For example, if you need a 20A fuse, get a 20A fuse.
Step 5: Replace the Fuse
Gently press the new fuse into the empty slot. You should feel a slight click when it's securely in place. Test the affected circuit to confirm it's working again.
What Now?
Fuse Was Blown — What to Buy
Ask at any auto parts store (AutoZone, O'Reilly, Advance Auto) for a blade fuse with the same amperage printed on the old one (e.g., 10A, 15A, 20A). Also match the physical size — mini (most modern cars), standard, or maxi. Replacement fuses cost under $5 and most stores sell assorted packs.
Fuse Looks Fine — Other Causes
If the fuse is intact, the problem isn't a blown fuse. Common alternatives include a bad relay (a click-sized electrical switch), a faulty wiring connection, or a failed component (motor, switch, module). At this point, a mechanic's diagnostic is the most reliable next step.
Frequently Asked Questions
What happens if I put in the wrong amperage fuse?
Higher amperage fuses won't protect the circuit and can cause wiring damage or fire. Lower amperage fuses will blow again immediately. Always match the exact amperage.
Why does my fuse keep blowing?
A repeatedly blown fuse indicates an underlying short circuit or overload. Replacing it again won't fix the root cause — consult a mechanic.
Do I need any tools?
Most cars come with a plastic fuse puller in the fuse box lid. If not, fine-tip needle-nose pliers work. A small flashlight helps.
How do I know what size fuse to buy?
Match the amperage printed on the old fuse (e.g., 10A, 15A, 20A) and the physical blade size (mini, standard, maxi). Auto parts stores carry assorted packs.