The Lexus LS460 back up light requires a bulb size of 921 for the specific lighting component located at the rear of the vehicle. Data for the bulb size covers the range from 2007 to 2012.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Lexus LS460 back up light uses two distinct bulb types across its model years: the 921 for the standard back up light and the 3057 for the inner back up light.
The 921 bulb is a single-filament wedge type, classified under the T15 form factor, and operates at 12V with a 16W output.
The 3057 bulb is a dual-filament wedge type, classified under the T25 form factor, and operates at 12V with filaments rated at 27W and 7W respectively.
Both the 921 and 3057 are ANSI-standardized bulbs, meaning their specifications are consistent across products sold in the United States and Canada.
The dual-filament design of the 3057 means it carries two independent circuits within a single bulb, which is a characteristic not shared by the single-filament 921.
The standard back up light on the Lexus LS460 uses the 921 bulb across the 2007-2012 model years.
The inner back up light uses the 3057 bulb across the 2007-2013 model years, a one-year longer span than the standard back up light fitment listed for the 921.
The T15 and T25 designations refer to the tubular wedge base profile of each bulb, with T25 being physically larger than T15, making the two bulbs non-interchangeable despite both using wedge-style bases.