Toyota Lexusc Owner's Handbook Manual page 117

GAUGES, METERS AND SERVICE REMINDER INDICATORS
On inclines or curves, due to the movement of fuel in the tank,
the low fuel level warning light may come on earlier than usual.
(p) Automatic Headlight Leveling System Warning
Light (vehicles with discharge headlight only)
This light warns that when there is a problem somewhere in the
automatic headlight leveling system.
The light will come on when the ignition key is turned to the
"ON" position, and will go off after a few seconds.
If it comes on while driving, have your vehicle checked by your
Lexus dealer.
(q) Low Tire Pressure Warning Light
This light warns that tire inflation pressure is critically low. The
light comes on when the ignition key is turned to the "ON"
position. It goes off after a few seconds. This indicates that the
low tire pressure warning system is functioning properly.
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If the light comes on while driving, adjust tire inflation pressure
to the specified level. (See "Specifications" on page 570.)
Once the ignition switch is turned off, the warning light also go
off. If the light comes on again when the vehicle is started after
adjusting the tire inflation pressure to the specified level, have
the low tire pressure warning system checked at your Lexus
dealer.
If the light blinks once every second, the low tire pressure
warning system may be malfunctioning. Have the system
checked at your Lexus dealer.
If the light blinks twice every second, the low tire pressure
warning system needs to be initialized. For details, see "Tire
pressure warning system" on page 458.
(r) Dynamic Laser Cruise Control Master Warning
Light
This light warns that there is a problem somewhere in the
dynamic laser cruise control system.
The light will come on when the ignition key is turned to the
"ON" position and will go off after a few seconds.
When the light comes on, the alarm sounds and the warning
code will appear on the display. At this time, the dynamic laser
cruise control is cancelled. For details, see "Dynamic laser
cruise control" on page 412.