Scion xD Map Light Bulb Size

The Scion xD Map Light requires a 12961 bulb size for proper installation and function within the interior lighting system. Available data for the specified component covers the period from 2008 through 2014.

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
2008-2014	12961	Check Price

Bulb Specifications

Description	Type	Shop
Philips part number. Miniature wedge bulb (T10) with W2.1x9.5d base. 12V, 5W.	12961	Check Price

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Additional Notes

The Scion xD uses the 12961 bulb for the map light across all model years covered by these specifications, spanning 2008-2014.
The 12961 is a Philips part number designating a miniature wedge bulb in the T10 form factor, which is one of the most widely used bulb types in automotive interior lighting applications.
The T10 designation refers to the bulb's tubular shape, with the number indicating a width of 10 millimeters across the widest point of the glass envelope.
The base type is W2.1x9.5d, a wedge-style base that relies on friction and contact pressure rather than a bayonet or screw mechanism to secure the bulb in its socket.
The electrical rating of the 12961 is 12 volts and 5 watts, which is consistent with standard low-power interior lighting circuits found in passenger vehicles.
The W2.1x9.5d base is a specific wedge standard, and substitution with bulbs carrying a different base type would result in an incompatible fit regardless of matching voltage or wattage ratings.