Lexus SC 430 2004 Manual page 240

NOTICE
D Do not use liquid sealants for a flat tire as tire
pressure sensors will be damaged.
D Take due care not to go over a curb stone and be
careful of the holes in the road because deflated tire
pressure affects tire cushion performance.
wheels, tires, body, suspension
components could be damaged.
D Your ground clearance is reduced if the run-flat tire
goes flat so avoid driving over obstacles and drive
slowly on rough, unpaved roads and speed bumps.
Also, do not attempt to go through an automatic car
wash as the vehicle may get caught, resulting in
damage.
D When the tires must be replaced, have them replaced
by the nearest Lexus dealer or authorized tire dealer.
The tire pressure sensor will be affected by the
installation or removal of tires.
D When the tires must be replaced, replace the
grommets for tire pressure sensors as well.
Vehicles with standard tires:
If the warning light is on, the tire inflation pressure is lower
than specified.
Stop your vehicle at a safe place as soon as possible and
check that the tire inflation pressure is as specified on the tire
and loading information label. The tire pressure gauge is
The located in the tool bag. If the warning light comes on or blinks
even after tire inflation pressure adjustment, it is probable that
and other
you may be a flat tire. If the tire goes flat, change to the spare
tire. (See page 247).
The spare tire is not equipped with the tire pressure sensor.
So, the warning light remains on even if the spare tire is
mounted.
If the warning light does not go off more than 15 minutes after
air is put in the deflated tire, the system might be
malfunctioning. Consult your Lexus dealer.
If the warning light comes on, observe the following
instructions:
D Decelerate as soon as possible to the most
appropriate speed that conditions permit.
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.
STARTING AND DRIVING
CAUTION
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