Toyota RAV4 Cornering Bulb Size

Additional Notes

• The Toyota RAV4 uses the 921 bulb size for its cornering lights across the 2020-2024 model years.
• The 921 is a wedge-style bulb, classified under the T15 form factor, which refers to its tubular glass envelope width of 15/8 of an inch.
• The 921 operates at 12 volts and 16 watts, placing it in the low-wattage range typical of auxiliary lighting functions such as cornering.
• The 921 follows the ANSI standardization system, meaning its electrical and physical specifications are governed by a recognized North American standard applicable in both the United States and Canada.
• Wedge-base bulbs like the 921 are retained in their socket by the tension of the base itself rather than by a separate locking mechanism, which distinguishes them from bayonet or screw-base types.
• The T15 wedge form factor is shared by several bulb numbers in the same family, and substitutions between them are not always interchangeable due to differences in wattage or base fit, even when the physical size appears similar.