Lexus CT200h License Plate Bulb Size

The Lexus CT200h license plate light uses 194 and 168 bulb sizes for the exterior illumination of the rear registration area. Data for the specific components covers the range from 2011 to 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 Size
2014	194
2011-2013	168

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W.	194
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W.	168

Other Locations

Additional Notes

Both the 194 and 168 bulb types follow the ANSI standard recognized in the United States and Canada, and both are classified as miniature wedge bulbs sharing the T10 form factor.
Despite sharing the same T10 wedge base, the 194 and 168 bulbs operate at different wattages: the 194 draws 3.78W while the 168 draws 4.9W, making them electrically distinct even though they are physically interchangeable in terms of socket fit.
The Lexus CT200h uses the 168 bulb for the license plate position across the 2011-2013 model years, all rated at 12V and 4.9W.
The 2014 Lexus CT200h requires the 194 bulb for the license plate position, which operates at 12V and 3.78W, a lower wattage than the 168 used in earlier model years.
Because the 194 and 168 share the T10 wedge base, a physical fit in the socket does not confirm electrical compatibility, and substituting one for the other introduces a wattage mismatch that may affect circuit load or bulb longevity.