Lexus RX400h2006 Owner's Manual page 90

The automatic light control sensor is on the top of the driver's
side instrument panel.
Do not place anything on the instrument panel, and/or do not
affix anything on the windshield to block this sensor.
When the headlights come on: The lights automatically turn off
about 30 seconds after any of the side doors and back door is
opened and closed with the ignition key turned to the "ACC" or
"LOCK" position. Additionally, the lights can be turned off
immediately by pushing the "LOCK" button on the wireless
remote control key with all the side doors and back door locked.
When only the tail lights come on: The lights automatically turn
off with the driver's door opened and the ignition key turned to
the "ACC" or "LOCK" position. To turn them on again, turn the
ignition key to the "ON" position, or turn the headlight switch off
and then twist the knob until the first or second clickstop.
If you are going to park for over one week, make sure the
headlight switch is off.
Daytime Running Light System
The headlights turn on at reduced intensity when the parking
brake is released with the hybrid system turned on, even with
the light switch in the "OFF" position. They will not go off until
the ignition switch is turned off.
To turn on the other exterior lights and instrument panel lights,
twist the knob to the first clickstop.
SWITCHES
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