Toyota Yaris Dome Light Bulb Size

The Toyota Yaris dome light requires bulb size DE3175 or 168 depending on the specific version of the vehicle. Data for the lighting components covers the range from 2013 to 2019.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Bulb Size by Year Range

Years	Bulb Size
2019	DE3175
2018	168
2013-2014	168

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 31mm length, end-cap contacts. 12V.	DE3175
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W.	168

Other Locations

Additional Notes

The DE3175 is a festoon-type bulb measuring 31mm in length with end-cap contacts, operating at 12V. Festoon bulbs seat horizontally between two spring-loaded contact points, which is a physically distinct mounting method from wedge-base designs.
The 168 is a T10 miniature wedge bulb rated at 12V and 4.9W. Wedge bulbs rely on the glass envelope itself to hold the filament leads in place, eliminating the need for a separate base socket.
Both the DE3175 and 168 conform to ANSI standards applicable in the United States and Canada, meaning their physical and electrical specifications follow a defined industry standard rather than a proprietary format.
The Toyota Yaris (2019) uses the DE3175 festoon bulb for the dome light, while the 2013-2014 and 2018 model years use the 168 wedge bulb. These two bulb types are not interchangeable due to their different base configurations and mounting methods.
The 2018 model year shares the 168 bulb specification with the 2013-2014 model years, indicating that the same replacement part applies across those three years despite the gap between them.