Toyota Corolla Cross Back Up Light Bulb Size

The Toyota Corolla Cross back up light requires a bulb size of 921 for proper illumination. Data for the specific component covers the range from 2022 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
2022-2024	921

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Wedge bulb (T15). 12V, 16W.	921

Other Locations

Additional Notes

The 921 bulb is the back up light bulb size for the Toyota Corolla Cross across the 2022-2024 model years.
The 921 bulb follows the ANSI standard, which is the American National Standards Institute's classification system for automotive lighting used in the United States and Canada.
This bulb uses a wedge-style base, designated T15, which refers to a tubular glass envelope approximately 15/8 inches wide that is held in its socket by friction rather than by pins or a bayonet mechanism.
The 921 operates at 12 volts and draws 16 watts, which are standard ratings for incandescent reverse lighting applications in passenger vehicles.
Because the wedge base relies on a friction fit, substituting a bulb with a different base type would result in an incompatible fitment even if the voltage and wattage ratings matched.