Toyota Yaris iA Fuse Box Locations and Diagrams (2016-2020)

The Toyota Yaris iA, available from 2016 to 2020, is a compact sedan developed in collaboration with Mazda (also known as the Mazda2 sedan in other markets). Known for its fuel efficiency, nimble handling, and a surprisingly upscale interior for its class, the Yaris iA appeals to drivers seeking practicality with a touch of style and reliability.

In this article, you will find fuse box diagrams for the Toyota Yaris iA, covering model years 2016, 2017, 2018, 2019, and 2020. These diagrams offer valuable information for identifying and understanding the vehicle’s fuse layout, ensuring proper maintenance and troubleshooting.

What’s Included:

Fuse Box Diagrams – Visual references to help locate and identify fuses and relays by position and function.
Fuse Panel Locations – Instructions on where to find the fuse panels inside your Yaris iA.
Fuse Assignments – Detailed descriptions of each fuse’s role in the vehicle’s electrical system.

Whether you’re replacing a blown fuse or diagnosing an electrical issue, this guide is an essential tool for keeping your Toyota Yaris iA (2016–2020) running smoothly and reliably.

What’s Included

Passenger Compartment

Fuse box location

The fuse box is located under the instrument panel (left-side).

The location of the fuses in the passenger compartment: Toyota Yaris iA / Scion iA (2015-2018-..)

Fuse box diagram

Assignment of the fuses in the Passenger Compartment

№	Name	Amp	Protected component
1	—	—	—
2	—	—	—
3	—	—	—
4	—	—	—
5	F.OUTLET	15	Accessory sockets
6	—	—	—
7	AT IND	7,5	AT shift indicator (if equipped)
8	MIRROR	7,5	Power control mirror
9	—	—	—
10	P.WINDOW2	25	Power windows
11	R.WIPER	15	—
12	—	—	—
13	—	—	—
14	SRS2/ESCL	15	—
15	SEAT WARM	20	Seat warmer (if equipped)
16	M.DEF	7,5	Mirror defogger (if equipped)

Engine Compartment

Fuse box location

Fuse box diagram

Assignment of the fuses in the Engine Compartment

№	Name	Amp	Protected component
1	C/U IG1	15	For protection of various circuits
2	ENGINE IG1	7,5	Engine control system
3	SUNROOF	10	—
4	INTERIOR	15	Overhead light
5	ENG+B	7,5	Engine control system
6	AUDIO2	15	Audio system
7	METER1	10	Combination meter
8	SRS1	7,5	Air bag
9	METER2	7,5	Combination meter (if equipped)
10	RADIO	7,5	Audio system
11	ENGINE3	15	Engine control system
12	ENGINE1	15	Engine control system
13	ENGINE2	15	Engine control system
14	AUDIO1	25	Audio system
15	A/C MAG	7,5	Air conditioner
16	AT PUMP	15	Transaxle control system (if equipped)
17	AT	15	Transaxle control system (if equipped)
18	D.LOCK	25	Power door locks
19	H/L RH	20	Headlight (RH)
20	ENG+B2	7,5	Engine control system
21	TAIL	20	Taillights, License plate lights, Parking lights
22	—	—	—
23	ROOM	25	Overhead light
24	FOG	15	Fog lights (if equipped)
25	H/CLEAN	20	—
26	STOP	10	Brake lights
27	HORN	15	Horn
28	H/L LH	20	Headlight (LH)
29	ABS/DSC S	30	ABS, Dynamic stability control system
30	HAZARD	15	Hazard warning flashers, Turn signal lights
31	FUEL PUMP	15	Fuel system
32	FUEL WARM	25	—
33	WIPER	20	Front window wiper and washer
34	CABIN+B	50	For protection of various circuits
35	FAN 2	30	Cooling fan
36	FUEL PUMP	30	—
37	ABS/DSC M	50	ABS, Dynamic stability control system
38	EVVT	20	Engine control system (if equipped)
39	—	—	—
40	FAN1	30	Cooling fan
41	FAN 3	40	—
42	ENG.MAIN	40	Engine control system
43	EPS	60	Power steering system (if equipped)
44	DEFOG	40	Rear window defogger
45	IG2	30	For protection of various circuits
46	INJECTOR	30	Engine control system
47	HEATER	40	Air conditioner
48	P.WINDOW1	30	Power windows
49	DCDC DE	40	—

FAQ

Which fuse controls the cigar lighter (power outlet) in the Toyota Yaris iA?

In the Toyota Yaris iA, the cigar lighter / 12 V power outlet is protected by fuse #5, labeled “F.OUTLET”, located in the Passenger Compartment Fuse Box.