The Lexus CT200h back up light requires a 921 bulb size for proper installation and function within the rear lighting assembly. Available data covers the range from 2011 to 2017 for the specified vehicle and component.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 921 bulb is the sole bulb size specified across all back up light positions on the Lexus CT200h.
The 921 is an ANSI-standard wedge-type bulb, classified under the T15 designation, and operates at 12 volts with a 16-watt output.
The T15 wedge base design means the bulb connects directly through two metal contacts on its base rather than using a separate socket with pins, which is a common fitment method in modern automotive rear lighting.
The 921 designation is recognized under ANSI standards applicable in both the United States and Canada, indicating a standardized specification rather than a proprietary one.
The standard back up light on the Lexus CT200h uses the 921 bulb across the full 2011-2017 model year range without variation.
The Inner Back Up Light on the 2011 model carries a production date qualifier, specifying fitment from December 2010 onward, which reflects a mid-cycle or late-production build date rather than a strict calendar year boundary.
The Inner Back Up Light on the 2017 model carries a production date qualifier specifying fitment only through August 2017, indicating that units produced after that date may use a different specification.
The Inner Back Up Light data does not include a 2012 entry, while the standard back up light covers 2011-2017 without interruption, reflecting a difference in how the two sub-parts are documented across model years.