Lexus ES350 Map Light Bulb Size

The Lexus ES350 map light requires a bulb size of 168 for the interior lighting system. Data for the specified component covers the range from 2007 through 2012.

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
2007-2012	168

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W.	168

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Additional Notes

The Lexus ES350 uses the 168 bulb size for the map light across the 2007-2012 model years.
The 168 bulb is classified under the ANSI standard, which is the recognized specification system for automotive lighting in the United States and Canada.
It belongs to the T10 form factor, a miniature wedge-base bulb type that seats without a separate locking mechanism, relying instead on friction from its wedge-shaped base.
The bulb operates at 12 volts, consistent with the standard electrical system voltage found in passenger vehicles.
Its rated wattage of 4.9W places it in the low-power range, typical of interior courtesy and reading light applications.
The T10 wedge base is a widely used form factor, meaning the 168 bulb is interchangeable with other T10-based bulbs that share the same voltage and wattage ratings, provided the physical fit within the socket housing is confirmed.