Toyota Sienna Door Mirror Illumination Light Bulb Size

The Toyota Sienna door mirror illumination light requires a bulb size of 12961 for proper installation and function within the specified vehicle lighting assembly. Information provided for the bulb size covers a range of years from 2011 to 2018.

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
2018	12961	Check Price
2011-2014	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 Toyota Sienna door mirror illumination light uses the 12961 bulb across the 2011-2014 and 2018 model years.
The 12961 is a Philips part number designating a miniature wedge bulb in the T10 form factor, which refers to a tubular bulb approximately 10mm wide.
The bulb uses a W2.1x9.5d base, a wedge-type connector that relies on spring tension from the socket rather than a locking mechanism to maintain contact.
The electrical rating of the 12961 is 12 volts and 5 watts, consistent with low-current automotive accent and courtesy lighting applications.
The T10 wedge format is a widely produced bulb type, meaning the 12961 shares physical and electrical compatibility with many other T10-rated bulbs from various manufacturers, provided the 12V and 5W ratings are matched.
Because the W2.1x9.5d base is a specific wedge size, substitution with bulbs using a different wedge base width or pin spacing would result in an improper fit within the mirror housing socket.