Lexus SC 430 2002 Manual page 69

If the warning light blinks and chimes sound every few
minutes, the tire pressure is very low.
Stop your vehicle at a safe place as soon as possible and
check that the tire pressure is as specified on the tire pressure
label. The air pressure gauge is located in the tool bag. Locate
the deflated tire and change to the spare tire. For the
procedure for changing the tire, see "If you have a flat tire
(Vehicles with standard tires)" on page 241.
The spare tire is not equipped with the tire pressure sensor.
So, the warning light remains on even if the spare tire is
mounted.
CAUTION
If the warning light blinks and chimes sound, observe
the following instructions:
D Decrease the speed as soon as possible.
D Avoid abrupt steering wheel maneuvering and
braking. If the vehicle tires deteriorate, you could
lose control of the steering wheel or the brakes,
causing death or serious injury.
D The warning system may not activate immediately if
bursts or sudden air leakage should occur.
GAUGES, METERS AND SERVICE REMINDER INDICATORS
NOTICE
D When the tires must be repaired or replaced, have
them repaired or replaced by the nearest Lexus
dealer or authorized tire dealer. The tire pressure
sensors will be affected by the installation or removal
of tires.
D When the tires must be replaced, replace the
grommets for air pressure sensors as well.
D Do not use liquid sealants for a flat tire as air pressure
sensors will be damaged.
(p) Low Fuel Level Warning Light
This light comes on when the fuel level in the tank becomes
very low. Fill the tank as soon as possible.
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.
(q) Key Reminder Buzzer
This buzzer reminds you to remove the key when you open the
driver's door with the ignition switch in the "ACC" or "LOCK"
position.
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