What is the low beam headlight bulb size for a 2017 Toyota Yaris iA?

The 2017 Toyota Yaris iA uses a H4 bulb for the low beam headlights. We recommend upgrading to LED for better visibility.

What is the high beam headlight bulb size for a 2017 Toyota Yaris iA?

The high beam bulb size for the 2017 Toyota Yaris iA is N/A.

Why are my 2017 Toyota Yaris iA headlights dim?

Dim headlights on a 2017 Toyota Yaris iA can be caused by aging halogen bulbs, which lose brightness over time, or oxidation (cloudiness) on the plastic headlight lenses. Upgrading to a H4 LED conversion kit can provide a significantly brighter and whiter light output.

Which bulb fits the 2017 Toyota Yaris iA fog light?

The 2017 Toyota Yaris iA uses a H11 bulb for the fog light position.

Is the 2017 Toyota Yaris iA single or dual beam?

The 2017 Toyota Yaris iA uses a dual bulb headlight system. This means you have separate bulbs for high and low beams.

Can I install LED bulbs on my 2017 Toyota Yaris iA?

Yes, the 2017 Toyota Yaris iA comes with standard halogen bulbs from the factory, but they can be upgraded to LED. You will need a H4 LED conversion kit for the low beams.

Does the 2017 Toyota Yaris iA have fog lights?

Yes, the 2017 Toyota Yaris iA takes a H11 bulb for the fog light position.

How do I change the headlight on a 2017 Toyota Yaris iA?

Turn off the vehicle and open the hood. Locate the headlight assembly from behind, remove the dust cover or retaining clip, disconnect the wiring harness, twist the old H4 bulb counter-clockwise to remove it, then insert the new bulb and reassemble. The whole process typically takes 10 to 30 minutes per side depending on accessibility.

Are LED headlights legal for a 2017 Toyota Yaris iA?

LED bulbs used off-road or in auxiliary lights are legal everywhere. For on-road headlight use, legality varies by state. Many states allow LED retrofits as long as the beam pattern meets DOT standards. For the best legal compliance, choose a DOT-approved H4 LED kit that is designed as a direct replacement and produces a proper cutoff pattern without excessive glare.

How much does it cost to replace 2017 Toyota Yaris iA headlights?

A pair of halogen H4 bulbs costs $15 to $40, while LED conversion kits run $25 to $60 per pair. If you have a shop do the work, expect an additional $20 to $50 in labor per bulb. Replacing them yourself at home saves the labor cost and usually takes under 30 minutes.

What is the difference between halogen and LED for a 2017 Toyota Yaris iA?

Halogen bulbs produce a warm yellow light (around 3200K), last 500 to 1000 hours, and draw more power. LED bulbs emit a brighter white light (5000-6000K), last 25,000+ hours, and use less energy. LED upgrades for the H4 position are available as direct plug-and-play replacements.

The 2017 Toyota Yaris iA has a unique bulb configuration not shared with adjacent model years.

Fitment Guaranteed for 2017 Toyota Yaris iA

What Size Bulbs Does a 2017 Toyota Yaris iA Use?

Correct headlight, fog light, and tail light bulb sizes. Sourced from OEM catalog data.

Installation Difficulty

Moderate (Dust covers often present)

Est. Replacement Cost

$15 - $40 (Halogen) / $30+ (LED)

What Lighting System Does the 2017 Toyota Yaris iA Have?

Lighting on the 2017 Toyota Yaris iA is managed by a total of 10 bulbs, covering everything from primary headlights to signal indicators. It features a comprehensive lighting system powered by a dual-bulb halogen configuration using separate H4 low beam and high beam bulbs for precise light distribution.

Can You Put LED Bulbs in a 2017 Toyota Yaris iA?

For a Toyota built for the road and trail, LED upgrades provide the high-contrast lighting needed for better obstacle detection. We recommend starting your upgrade with the H4 low beams, as they see the most use. Adding a matching LED kit later will complete the look and ensure consistent lighting performance. Don't forget the H11 fog lights; switching these to LED can dramatically improve your visibility in adverse weather.

2017 Toyota Yaris iA Bulb Size Chart

Position	Bulb Size	Shop
Fog Light	H11	Buy H11 →
Daytime Running	H4	Buy H4 →
Low Beam	H4	Buy H4 →
Tail Light	7443	Buy 7443 →
Side Marker	W5W	Buy W5W →
License Plate	W5W	Buy W5W →
Turn Signal Rear	7440NA	Buy 7440NA →
Reverse Light	921	Buy 921 →
Brake Light	7443	Buy 7443 →
Map Light	DE3175	Buy DE3175 →