The Scion xA dome light requires a DE3175 bulb size for proper installation and function within the interior lighting system. Data for the specified component covers the range from 2004 to 2006.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The DE3175 is the sole bulb size specified across all dome light positions in the Scion xA, covering the 2004-2006 model years.
The DE3175 is a festoon-type bulb, meaning it is cylindrical in shape and makes electrical contact through metal caps at each end rather than through a base or pins.
Festoon bulbs are held in place by spring-loaded clips within the fixture, which grip the end caps to maintain both mechanical retention and electrical contact.
The DE3175 has a nominal length of 31mm, which is the figure used to confirm fitment when substituting equivalent festoon bulbs from other part number families.
The bulb operates at 12 volts, consistent with standard automotive electrical systems.
The DE3175 carries ANSI standardization recognized in both the United States and Canada, meaning the specification reflects a defined and regulated form factor rather than a proprietary one.
Both the front and rear dome light positions in the Scion xA share the same DE3175 bulb size across all three model years, indicating full interchangeability between those two positions.