Toyota Highlander Interior Door Bulb Size

The Toyota Highlander interior door light uses a 168 bulb size for illumination within the vehicle cabin. Data for the specified component covers the period from 2008 through 2023.

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
2008-2023	168

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W.	168

Other Locations

Additional Notes

The Toyota Highlander uses the 168 bulb size for the interior door position across all listed model years from 2008-2023.
The 168 bulb is an ANSI-standardized type recognized across the United States and Canada, which reflects a formally defined specification rather than a manufacturer-specific designation.
It belongs to the T10 miniature wedge form factor, a base style that requires no locking pins or screw threads, relying instead on friction from the wedge-shaped base to seat within the socket.
The bulb operates at 12 volts with a power draw of 4.9 watts, placing it in the low-wattage range typical of interior courtesy lighting applications.
The T10 wedge base is shared across a wide range of automotive bulb types, which means physical fitment alone does not confirm electrical compatibility when substituting alternative bulbs.
Because the 168 designation is an ANSI standard, replacement bulbs carrying that same designation from different manufacturers are generally interchangeable in terms of voltage, wattage, and base type.