Toyota Highlander Map Light Bulb Size

The Toyota Highlander map light utilizes 12961 and 168 bulb sizes for the interior illumination components. Available data for the specified vehicle covers the range from 2004 to 2024.

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 Size
2023-2024	12961
2020-2021	12961
2008-2019	168
2001-2005	168

Bulb Specifications

Description	Bulb Size
Philips part number. Miniature wedge bulb (T10) with W2.1x9.5d base. 12V, 5W.	12961
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W.	168

Other Locations

Additional Notes

The 168 bulb is the map light specification for the Toyota Highlander across 2001-2008 and 2009-2019, making it the more widely used of the two bulb types in this application.
The 168 is an ANSI-standardized miniature wedge bulb in the T10 form factor, rated at 12V and 4.9W, and the ANSI designation means it conforms to a defined standard recognized across the US and Canada.
The 12961 is a Philips part number designation for a T10 miniature wedge bulb carrying a W2.1x9.5d base, rated at 12V and 5W, and it serves as the map light specification for the 2020-2021 and 2023-2024 Highlander.
Both the 168 and the 12961 share the T10 wedge form factor and a 12V operating voltage, though they differ slightly in wattage, with the 12961 rated at 5W against the 168's 4.9W.
The W2.1x9.5d base designation on the 12961 describes a wedge-type base where 2.1 refers to the pin width in millimeters and 9.5 refers to the insertion depth in millimeters, which is the standard physical interface for T10 wedge bulbs.
Because the 168 is an ANSI-standardized number, it is cross-referenced by multiple manufacturers, whereas the 12961 is a proprietary Philips number that may require cross-referencing to confirm equivalency with other brands' T10 offerings.
The Toyota Highlander (2020) marks the transition point in map light specifications from the 168 to the 12961, meaning parts sourced for pre-2020 and post-2019 model years are not directly interchangeable by part number, even though both bulbs occupy the T10 form factor.