Toyota Corolla Fuse Box: Location & Guide
TL;DR
The Corolla has an engine-bay fuse/relay box (under the hood, near the battery) and an interior fuse panel (driver's side dash edge, inside the door opening) - check the lid diagram or owner's manual for exact positions.
Where the Toyota Corolla fuse boxes are located
Across every modern Corolla generation the layout is the same in principle: one fuse and relay box lives in the engine compartment, and a second, smaller fuse panel lives inside the cabin. The engine-bay box sits toward the back corner of the bay, close to the battery, protected by a black plastic cover that unclips or unlatches by hand - no tools needed on most years. The interior box is tucked behind a trim panel on the far left edge of the dashboard (driver's side), visible once you open the driver's door; it is usually held by one or two plastic clips or a couple of small screws, so it pulls or pries off gently.
| Generation / years | Fuse box | Location | How to access |
|---|---|---|---|
| E140/E150 (2009-2013) | Engine compartment box | Rear of engine bay, next to the battery | Unclip the plastic cover by hand |
| E140/E150 (2009-2013) | Interior panel | Driver's side dash edge, behind the door | Open door, pop off the small trim cover |
| E170 (2014-2019) | Engine compartment box | Rear corner of engine bay, near the battery | Unclip or unlatch the cover |
| E170 (2014-2019) | Interior panel | Driver's side dash edge | Open door, remove trim panel (clips or small screws) |
| E210 (2020-present) | Engine compartment box | Rear corner of engine bay, near the battery | Unclip the cover by hand |
| E210 (2020-present) | Interior panel | Driver's side dash edge | Open door, gently pry off trim cover |
Where to find the official fuse legend
Toyota prints the full fuse and relay map on a paper diagram glued or clipped to the inside of the engine-bay fuse box lid, and a smaller version usually rides on the inside of the interior fuse cover as well. The complete written legend, with every circuit name and amp rating, is also in the fuse chapter of your owner's manual. We intentionally do not list individual numbered fuse positions here because they change between trims and model years - the lid diagram for your specific car is the only source you should trust.
Fuses that commonly cause complaints
By function, the fuses owners most often report tripping are: the cigarette lighter / 12V accessory outlet fuse (symptom: phone charger or dash cam stops working while everything else is fine), the radio/infotainment fuse (symptom: touchscreen or stereo goes dark, clock resets), the interior lighting fuse (symptom: dome light, map lights or glovebox light stop working), the blower motor fuse (symptom: no airflow from any vent even though climate controls respond), and the fuel pump relay/fuse (symptom: engine cranks but won't start, or stalls and won't restart). Each of these can blow on its own from age or a loose connector, but if the same one blows again within minutes of a fresh fuse, treat it as a warning sign rather than bad luck.
How to check and replace a fuse safely
With the engine off, pull the suspect fuse straight out using the small plastic fuse puller usually clipped inside the box lid. Hold it up to the light: a good fuse has an intact metal strip between its two prongs, while a blown one shows a visibly broken or scorched strip. If you are not sure by eye, a simple test light or multimeter across the two prongs (with the fuse still in place and ignition on) confirms whether current is present on both sides. Replace a blown fuse only with one of the identical amp rating shown on the lid diagram - never a higher rating, since that removes the protection the circuit was designed to have and can allow wiring to overheat.
When a blown fuse means something bigger
A fuse that blows once and then behaves for months is usually just old age or a momentary overload. A fuse that blows again as soon as you replace it, or blows repeatedly within days, points to a short circuit or a failing component drawing too much current on that circuit - continuing to swap in new fuses will not fix that and can be unsafe. In that situation, a fault code scan is the fastest way to narrow down which module or sensor on that circuit is causing the short, which is exactly the kind of diagnostic step this site specializes in helping you interpret.
Summary
| Engine-bay fuse box location | Rear corner of engine compartment, near the battery |
|---|---|
| Engine-bay box access | Unclip plastic cover by hand |
| Interior fuse box location | Driver's side dash edge, inside door opening |
| Interior box access | Open driver's door, remove trim panel (clips/small screws) |
| Official fuse legend | Diagram on inside of each box lid + owner's manual fuse chapter |
| Commonly blown fuses | 12V outlet, radio/infotainment, interior lights, blower motor, fuel pump relay |
| Repeated blowing | Indicates a short - scan for fault codes rather than keep replacing fuses |
Full diagnostics
For the complete step-by-step diagnostic and repair guide, see Toyota Corolla: Common Problems, Fault Codes & Repairs.
Frequently asked questions
Where is the fuse box on a Toyota Corolla?
The Toyota Corolla has two fuse boxes: an engine-bay fuse and relay box near the battery, under a plastic cover you unclip by hand, and a smaller interior fuse panel on the driver's side edge of the dashboard, reached by opening the driver's door and removing a trim panel. This layout applies across the 2009-2013, 2014-2019 and 2020-present generations.
How do I find out which fuse controls a specific function on my Corolla?
Do not guess the fuse number - open the engine-bay fuse box lid and read the printed diagram glued or clipped to its underside, which lists every fuse position and its amp rating for your specific model year and trim; the same information is repeated in the fuse section of the owner's manual, and a smaller diagram is usually on the interior fuse cover too.
Why does my Corolla's cigarette lighter or 12V outlet keep losing power?
This is one of the most commonly reported blown fuses on the Corolla. It usually happens because an aftermarket accessory (phone charger, dash cam, tire inflator) draws more current than the circuit allows, or because the fuse has simply aged. Replace it with a fuse of the exact same amp rating shown on the fuse box diagram; if it blows again immediately, unplug all accessories from that outlet and have the circuit checked for a short.
My Corolla's fuse keeps blowing again right after I replace it - what does that mean?
A fuse that blows again as soon as a new one is installed is not a fuse problem, it is a sign of a short circuit or a failing component pulling excess current somewhere on that circuit. Continuing to install new fuses will not solve it and can create a fire risk. The correct next step is a proper diagnostic check, ideally starting with a fault code scan, to identify which component or wiring section is causing the overload.