Scion tC Daytime Running Light Bulb Size

The Scion tC daytime running light requires a bulb size of 1156NA for the lighting components. Data for the specific bulb requirements covers the range from 2014 to 2016.

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	US Type	EU Type	Shop
2014-2016	1156NA	PY21W	Check Price

Bulb Specifications

Description	Type	Shop
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base, natural amber glass. 12V, 21W.	1156NA	Check Price
ECE standard (Europe & worldwide). Single-filament amber bulb with BAU15s bayonet base. 12V, 21W.	PY21W	Check Price

Other Locations

Additional Notes

The 1156NA is a single-filament bulb built on a BA15s bayonet base, which uses a single contact pin offset to one side to ensure correct rotational alignment during installation.
The bulb operates at 12 volts and draws 21 watts, figures consistent with standard automotive incandescent daytime running light applications.
The natural amber glass of the 1156NA produces a warm-tinted output without the use of a colored lens or housing filter, distinguishing it from the clear-glass 1156 variant.
The 1156NA carries ANSI standardization recognized in both the United States and Canada, meaning its physical and electrical characteristics conform to a defined industry specification rather than a proprietary standard.
The Scion tC uses the 1156NA for its daytime running lights across the 2014-2016 model years, indicating a consistent fitment across that production span.
Because the 1156NA and the standard 1156 share the same BA15s base and wattage, they are physically interchangeable, but substituting a clear 1156 for the 1156NA would alter the output color from amber-tinted to white.