Lexus ES300 Map Light Bulb Size

The Lexus ES300 map light uses bulb size 57 or DE3175 depending on the specific version of the vehicle. Data for the lighting components covers the range from 1995 to 2003.

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
2002-2003	57
2000-2001	DE3175
1995-1996	57

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Single-filament bulb with BA9s base. 12V, 1W.	57
ANSI standard (US & Canada). Festoon bulb, 31mm length, end-cap contacts. 12V.	DE3175

Other Locations

Additional Notes

The Lexus ES300 map light specifications reference two distinct bulb types across the listed model years: the 57 and the DE3175.
The 57 bulb is a single-filament type rated at 12V and 1W, fitted with a BA9s bayonet base, and classified under the ANSI standard for the US and Canadian markets.
The BA9s base is a miniature bayonet cap with a 9mm collar, commonly found in low-wattage interior lighting applications.
The DE3175 is a festoon-style bulb with a 31mm length and end-cap contacts, also rated at 12V and conforming to the same ANSI standard.
Festoon bulbs make electrical contact through metal caps at each end rather than through a base pin or bayonet collar, which makes the DE3175 physically and electrically incompatible with sockets designed for the BA9s-based 57 bulb.
The Lexus ES300 used the 57 bulb for the 1995-1996 model years and again for 2002-2003.
The 2000-2001 ES300 model years used the DE3175 festoon bulb instead.
Because the 57 and DE3175 use fundamentally different base and contact configurations, they are not interchangeable despite both operating at 12V.