Kia Rio Fuse Box: Location & Guide
TL;DR
Kia Rio fuses live in an engine-bay box near the battery and a driver-side under-dash panel; the lid of each box carries the official fuse map, and the owner's manual repeats it in detail.
Where the Kia Rio fuse boxes are located
Every Kia Rio hatchback from the UB (2012-2017) and YB (2018-2023) generations uses the same two-box layout common to Kia's small cars. The engine compartment fuse and relay box sits at the back of the engine bay, close to the battery on the driver's side, and protects the high-current circuits: the alternator, cooling fan, ABS/ESC module, headlights and starter relay. The interior fuse panel is under the dashboard on the driver's side, just to the left of the steering column, roughly behind or beside the hood-release handle - it covers lower-current circuits such as the radio, power windows, interior lighting and the instrument cluster.
How to open each box
The engine bay cover is held by a few plastic clips or small tabs; press or pull as marked and lift it straight up and off. The interior panel is usually a small trim cover that either unclips by hand or needs a flat trim tool worked gently around the edge - it is not screwed down on most Rio trims. Never force a cover diagonally; work around the perimeter evenly to avoid snapping a clip.
Finding the official fuse legend
The printed diagram on the inside of each cover lid is the fastest reference and is specific to that exact box, but it can fade over time. The complete, definitive legend - including amperage for every position - is in the owner's manual, in the chapter covering fuses and electrical maintenance. Because Kia revised circuit assignments between model years and trims, always cross-check the lid diagram against the manual for your specific build.
| Generation / years | Fuse box | Location | How to access |
|---|---|---|---|
| UB (2012-2017) | Engine compartment box | Rear of engine bay, driver's side, next to the battery | Unclip/lift the plastic cover; diagram printed on the underside |
| UB (2012-2017) | Interior panel | Under dash, driver's side, left of steering column | Pop off small trim cover by hand or with a trim tool |
| YB (2018-2023) | Engine compartment box | Rear of engine bay, driver's side, next to the battery | Unclip/lift the plastic cover; diagram printed on the underside |
| YB (2018-2023) | Interior panel | Under dash, driver's side, left of steering column | Pop off small trim cover by hand or with a trim tool |
Fuses that most commonly blow, by function
- Cigarette lighter / 12V accessory outlet: often blows from phone chargers, air compressors or dash-cams left plugged in; symptom is simply a dead outlet with everything else working.
- Radio / infotainment: a blown circuit kills the screen and audio but the rest of the car drives normally.
- Interior lighting: dome light, map lights or footwell lights stop working while exterior lights are unaffected.
- Blower motor: the HVAC fan stops moving air at all speeds, though the climate control buttons still light up.
- Fuel pump relay: the engine cranks but will not start, or stalls and refuses to restart, because the pump loses power.
Checking and replacing a fuse safely
With the ignition off, pull the suspect fuse using the small plastic puller clipped inside the cover and inspect the thin metal strip inside: a visibly broken or scorched strip confirms it is blown. If it looks intact, a test light or multimeter across the two terminals with the ignition on gives a definitive answer. Replace it only with a fuse of the identical amperage shown on the lid diagram - fitting a higher-rated fuse can allow a wiring fault to overheat and start a fire.
When a fuse keeps blowing
A fuse that blows again shortly after replacement is not a fuse problem - it is a symptom of a short circuit or an overloaded component downstream, and repeated replacement without finding the cause risks wiring damage. In these cases a scan tool reading stored fault codes can point straight to the affected circuit or module, saving hours of manual tracing - which is exactly the kind of diagnostic step this site focuses on.
Summary
| Generations covered | UB (2012-2017), YB (2018-2023) |
|---|---|
| Number of fuse boxes | 2 (engine compartment + interior) |
| Engine bay box location | Rear of engine bay, driver's side, near battery |
| Interior box location | Under dash, driver's side, left of steering column |
| Trunk fuse box | Not used on the Rio hatchback |
| Official fuse legend | Printed diagram on box lid + owner's manual electrical chapter |
| Repeat blown fuse | Indicates a short - check for stored fault codes, do not upsize the fuse |
Full diagnostics
For the complete step-by-step diagnostic and repair guide, see Kia Rio: Common Problems, Fault Codes & Repairs.
Frequently asked questions
Where is the fuse box on a Kia Rio hatchback?
The Kia Rio has two fuse boxes: an engine compartment box at the rear of the engine bay near the battery on the driver's side, and an interior panel under the dash on the driver's side, just left of the steering column. This layout applies to both the UB (2012-2017) and YB (2018-2023) generations; there is no separate trunk fuse box.
How do I know which fuse controls what on my Kia Rio?
Check the fuse map diagram printed on the inside of the fuse box cover - both the engine bay box and the interior panel have one. For the complete, most reliable legend with amperage values, refer to the electrical/fuses chapter of your Kia Rio owner's manual, since assignments can differ slightly by model year and trim.
Why does my Kia Rio's cigarette lighter or 12V outlet not work?
A dead 12V outlet with everything else working normally almost always points to a blown fuse dedicated to that circuit, commonly from a phone charger, air compressor or dash-cam drawing too much current or being plugged in during a short. Pull the fuse (identified via the lid diagram or owner's manual), inspect the metal strip for a visible break, and replace it with one of the exact same amperage.
Why does the same fuse keep blowing on my Kia Rio?
If a fuse blows again soon after you replace it, the fuse itself is not the problem - it means a short circuit or a failing component is drawing excess current on that circuit. Do not install a higher-amperage fuse to make it stop; instead have the circuit tested and, if available, have a scan tool check for stored fault codes, which can point directly to the faulty wiring or module.