Lexus ES300 Owner's Manual page 365

The inside of the lens of exterior lights such as headlights may
temporarily fog up when the lens becomes wet in the rain or in
a car wash. This is not a problem because the fogging is
caused by the temperature difference between the outside and
inside of the lens, just like the windshield fogged up in the rain.
However, if there is a large drop of water on the inside of the
lens, or if there is water pooled inside the light, contact your
Lexus dealer.
ELECTRICAL COMPONENTS
LIGHT LOCATION
Light Bulbs Bulb No.
1 Headlights (high beam) 9005
2 Headlights (low beam)
Discharge bulb
Halogen bulb
3 Parking lights
4 Front side marker lights 194
5 Fog lights
6 Front turn signal lights
W Type
60 A
35 B
55 C
5 E
3.8 E
55 D
21 E
351