The Toyota Solara back up light requires a 921 bulb size for proper installation and function within the rear lighting assembly. Data for the specific component covers the range from 1999 to 2003.
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 listed years for both the standard back up light and the outer back up light positions on the Toyota Solara.
The 921 bulb follows the ANSI standard recognized in the United States and Canada, meaning it conforms to a defined set of electrical and physical specifications shared across those markets.
The 921 is a wedge-type bulb in the T15 form factor. Wedge bulbs use no separate metal base; instead, the glass envelope itself is pinched at the bottom to form the electrical contact points.
The bulb operates at 12 volts and draws 16 watts, which is consistent with standard automotive low-current lighting circuits used in reverse lamp applications.
The 1999-2003 model years all share the same 921 bulb size for the standard back up light position, indicating no change in that specification across the full production span covered.
The outer back up light on the 2003 Toyota Solara carries a production cutoff notation of "To 12/2002," meaning the 921 bulb specification for that position applies only to vehicles produced through December 2002 within the 2003 model year.