Lexus 2003 LS Owner's Manual page 413

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
64L171b
Light Bulbs Bulb No.
1 Headlight (High beam) 9005
2 Parking light –––
3 Headlight (Low beam) –––
4 Front turn signal light –––
5 Front side marker light –––
6 Fog light 9006
W Type
60 A
5 D
35 B
21 D
5 D
51 C
399