Toyota RAV4 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 Toyota RAV4 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.
Passenger Compartment Fuse Box
| Fuse # | Function | Amperage |
|---|---|---|
| 1 | Spare | |
| 2 | STOP | 7.5 |
| 3 | S/ROOF | 10 |
| 4 | AM1 | 5 |
| 5 | OBD | 7.5 |
| 6 | D/L NO.2 | 20 |
| 7 | FOG RR | 7.5 |
| 8 | D/L BACK | 10 |
| 9 | P/OUTLET NO.1 | 15 |
| 10 | DOOR D | 20 |
| 11 | DOOR R/R | 20 |
| 12 | DOOR R/L | 20 |
| 13 | WIP RR | 15 |
| 14 | WSH | 15 |
| 15 | GAUGE | 7.5 |
| 16 | WIP FR | 25 |
| 17 | SFT LOCK-ACC | 5 |
| 18 | P/OUTLET NO.2 | 15 |
| 19 | ACC | 7.5 |
| 20 | PANEL | 7.5 |
| 21 | TAIL | 10 |
| 22 | D/L NO.2 | 20 |
| 23 | EPS-IG | 5 |
| 24 | ECU-IG NO.1 | 10 |
| 25 | ECU-IG NO.2 | 5 |
| 26 | HTR-IG | 7.5 |
| 27 | S-HTR LH | 10 |
| 27 | S/HTR F/L | 10 |
| 28 | S-HTR RH | 10 |
| 28 | S/HTR F/R | 10 |
| 29 | IGN | 7.5 |
| 30 | A/B | 7.5 |
| 31 | METER | 5 |
| 32 | ECU-IG NO.3 | 7.5 |
Engine Compartment Fuse Box №1 Fuse Box
| Fuse # | Function | Amperage |
|---|---|---|
| 1 | EFI-MAIN NO.1 | 20 |
| 1 | EFI-MAIN NO.1 | 25 |
| 1 | EFI-MAIN NO.1 | 30 |
| 2 | TOWING-B | 30 |
| 3 | STRG LOCK | 10 |
| 4 | ECU-B NO.2 | 10 |
| 5 | TURN&HAZ | 10 |
| 6 | EFI-MAIN NO.2 | 20 |
| 6 | EFI-MAIN NO.2 | 15 |
| 6 | EFI-MAIN NO.2 | 7.5 |
| 7 | ST NO.2 | 20 |
| 7 | D/L NO.1 | 30 |
| 8 | ST | 30 |
| 8 | ST NO.1 | 30 |
| 9 | AMP | 30 |
| 9 | AMP/BBC NO.3 | 30 |
| 10 | ETCS | 10 |
| 10 | FUEL PMP | 30 |
| 11 | S-HORN | 10 |
| 11 | BBC NO.2 | 30 |
| 11 | MAYDAY | 7.5 |
| 12 | IG2 | 15 |
| 13 | AM 2 | 7.5 |
| 14 | ALT-S/ICS | 7.5 |
| 15 | HORN | 10 |
| 16 | EDU | 25 |
| 16 | ST NO.2 | 20 |
| 16 | S-HORN | 10 |
| 17 | D/C CUT | 30 |
| 18 | WIPER-S | 5 |
| 19 | EFI NO.1 | 10 |
| 19 | EFI NO.1 | 7.5 |
| 20 | EFI NO.2 | 10 |
| 20 | EFI NO.2 | 15 |
| 21 | H-LP LH-HI | 10 |
| 22 | H-LP RH-HI | 10 |
| 23 | EFI NO.3 | 7.5 |
| 23 | EFI NO.3 | 20 |
| 24 | Spare | |
| 25 | Spare | |
| 26 | RADIO | 20 |
| 27 | ECU-B NO.1 | 10 |
| 28 | DOME | 10 |
| 29 | H-LP LH-LO | 10 |
| 29 | H-LP LH-LO | 15 |
| 30 | H-LP RH-LO | 10 |
| 30 | H-LP RH-LO | 15 |
| 31 | Spare | |
| 32 | Spare | |
| 33 | Spare | |
| 34 | Spare | |
| 35 | FUEL HTR | 50 |
| 36 | BBC | 40 |
| 37 | VLVMATIC | 30 |
| 37 | EFI MAIN | 50 |
| 38 | ABS NO.2 | 30 |
| 39 | ABS NO.2 | 50 |
| 40 | H-LP-MAIN | 50 |
| 41 | GLOW | 80 |
| 42 | EPS | 80 |
| 43 | ALT | 120 |
| 43 | ALT | 140 |
| Relay | Spare | |
| R1 | Spare | |
| R2 | Spare | |
| R3 | Spare | |
| R4 | Spare | |
| R5 | Spare | |
| R6 | Spare |
Engine Compartment Fuse Box №1 Fuse Box
| Fuse # | Function | Amperage |
|---|---|---|
| 1 | RADIO | 20 |
| 2 | ECU-B NO.1 | 10 |
| 3 | DOME | 10 |
| 4 | Spare | |
| 5 | DEICER | 20 |
| 6 | Spare | |
| 7 | FOG FR | 7.5 |
| 8 | AMP | 30 |
| 9 | ST | 30 |
| 10 | EFI-MAIN NO.1 | 20 |
| 11 | Spare | |
| 12 | IG2 | 15 |
| 13 | TURN&HAZ | 10 |
| 14 | AM2 | 7.5 |
| 15 | ECU-B NO.2 | 10 |
| 16 | STRG LOCK | 10 |
| 17 | D/C CUT | 30 |
| 18 | HORN | 10 |
| 19 | ETCS | 10 |
| 20 | EFI-MAIN NO.2 | 20 |
| 21 | ALT-S/ICS | 7.5 |
| 22 | MIR HTR | 10 |
| 23 | EFI NO.1 | 10 |
| 24 | EFI NO.2 | 10 |
| 25 | H-LP LH-HI | 10 |
| 26 | H-LP RH-HI | 10 |
| 27 | Spare | |
| 28 | H-LP LH-LO | 10 |
| 29 | H-LP RH-LO | 10 |
| 30 | CDS FAN | 30 |
| 31 | HTR | 50 |
| 32 | H-LP-MAIN | 50 |
| 33 | PTC HTR NO.2 | 30 |
| 34 | PTC HTR NO.1 | 30 |
| 35 | DEF | 30 |
| 36 | ABS NO.2 | 30 |
| 37 | RDI FAN | 30 |
| 38 | ABS NO.1 | 50 |
| 39 | EPS | 80 |
| 40 | ALT | 120 |
| 41 | WIPER-S | 5 |
| 42 | SPARE | 10 |
| 43 | SPARE | 20 |
| 44 | SPARE | 30 |
| Relay | Spare | |
| R1 | Spare | |
| R2 | Spare | |
| R3 | Spare | |
| R4 | Spare | |
| R5 | Spare | |
| R6 | Spare | |
| R7 | Spare | |
| M1 | Spare |
Engine Compartment Fuse Box №2 Fuse Box
| Fuse # | Function | Amperage |
|---|---|---|
| 1 | DRL | 5 |
| 2 | TOWING-ALT | 30 |
| 3 | FOG FR | 7.5 |
| 4 | NOISE FILTER | 10 |
| 5 | STVHTR | 25 |
| 6 | S/HTR R/R | 10 |
| 7 | DEICER | 20 |
| 7 | S/HTR R/L | 10 |
| 8 | CDS FAN NO.2 | 5 |
| 9 | Spare | |
| 10 | RDI FAN NO.2 | 5 |
| 11 | Spare | |
| 12 | Spare | |
| 13 | MIR HTR | 10 |
| 14 | Spare | |
| 15 | Spare | |
| 16 | Spare | |
| 17 | PTC HTR NO.1 | 50 |
| 17 | PTC HTR NO.1 | 30 |
| 18 | PTC HTR NO.2 | 50 |
| 18 | PTC HTR NO.2 | 30 |
| 19 | PTC HTR NO.3 | 50 |
| 19 | PTC HTR NO.3 | 30 |
| 20 | CDS FAN | 30 |
| 20 | CDS FAN | 40 |
| 20 | FAN NO.2 | 50 |
| 21 | RDI FAN | 30 |
| 21 | RDI FAN | 40 |
| 21 | FAN NO.1 | 50 |
| 22 | HTR | 50 |
| 23 | DEF | 30 |
| 24 | HWD NO.2 | 50 |
| 25 | H-LP CLN | 30 |
| 26 | HWD NO.1 | 50 |
| Relay | Spare | |
| R1 | Spare | |
| R2 | Spare | |
| R3 | Spare | |
| R4 | Spare | |
| R5 | Spare | |
| R6 | Spare | |
| R7 | Spare | |
| R8 | Spare | |
| R9 | Spare | |
| R10 | Spare | |
| R11 | Spare | |
| R12 | Spare | |
| R13 | Spare | |
| R14 | Spare | |
| A | Spare | |
| R15 | Spare | |
| R16 | Spare | |
| B | Spare | |
| R17 | Spare | |
| R18 | Spare | |
| C | Spare | |
| R19 | Spare | |
| R20 | Spare |
Engine Compartment Relay Box Fuse Box
| Fuse # | Function | Amperage |
|---|---|---|
| R1 | Front fog lights (FOG FR) | |
| R2 | Air conditioner compressor clutch (MG/CLT) | |
| R3 | PTC heater (PTC HTR NO.2) | |
| R4 | Spare | |
| R5 | Horn | |
| R6 | Electric cooling fan (FAN NO.2) | |
| R7 | PTC heater (PTC HTR NO.1) | |
| R8 | Electric cooling fan (FAN NO.3) | |
| R9 | Starter (ST) | |
| R10 | Electric cooling fan (FAN NO.1) |
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.