Scion xA Trunk Bulb Size

The Scion xA trunk light requires a DE3175 bulb size for proper installation and function within the rear cargo area. Data for the specified lighting component covers the period from 2004 through 2006.

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 Type	Shop
2004-2006	DE3175	Check Price

Bulb Specifications

Description	Type	Shop
ANSI standard (US & Canada). Festoon bulb, 31mm length, end-cap contacts. 12V.	DE3175	Check Price

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Additional Notes

The DE3175 is the trunk bulb size for the Scion xA across its 2004-2006 model years, with no variation in specification across that span.
The DE3175 is a festoon-type bulb, meaning it is cylindrical in form and makes electrical contact through metal caps at each end rather than through a base or pin configuration.
At 31mm in length, the DE3175 falls within the shorter range of festoon bulbs commonly found in interior and cargo lighting applications.
The DE3175 operates at 12 volts, consistent with standard automotive electrical systems.
The ANSI designation on the DE3175 indicates it conforms to a standardized specification recognized in the United States and Canada, which governs its physical and electrical characteristics.
Because festoon bulbs rely on end-cap contact rather than a keyed base, fitment depends on both the length and the socket's contact span. A bulb of incorrect length may not make reliable contact even if it physically fits into the housing.