The Lexus LX450 dome light requires a DE3175 bulb size for proper installation within the interior overhead lighting fixture. Data for the specified bulb covers the range from 1996 to 1997.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The DE3175 is the sole bulb type specified across all dome light positions for the Lexus LX450, covering the 1996-1997 model years.
The DE3175 follows the ANSI standard, meaning it conforms to a regulated specification recognized in both the United States and Canada.
As a festoon-type bulb, the DE3175 makes electrical contact through metal end caps at both tips rather than through a base socket, which is a defining characteristic of the festoon form factor.
The DE3175 has a 31mm length, which is the measurement that distinguishes it from other festoon bulbs such as the DE3021 or DE3022, making length a critical factor in fitment.
The bulb operates at 12 volts, consistent with the standard electrical system voltage found in passenger vehicles.
The same DE3175 specification applies to both the front dome light and the rear dome light on the LX450, indicating a uniform bulb requirement across interior dome positions.
Because festoon bulbs rely on end-cap contact rather than a keyed base, substituting a festoon bulb of a different length risks poor contact or physical incompatibility with the fixture housing.