Lexus SC 430 2004 Manual page 69

GAUGES, METERS AND SERVICE REMINDER INDICATORS
Vehicles with run-flat 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
located in the tool bag. If the warning light comes on or blinks
even after tire inflation pressure adjustment, it is probable that
you have a flat tire. If you cannot verify the tire inflation
pressure soon, go to the nearest Lexus dealer or authorized
tire dealer at the moderate speed and do not ever exceed 90
km/h (55 mph) and have all your vehicle's tires checked and
adjusted. And whether there is a flat tire or not should be also
checked at this time. If any tire must be replaced, see "If you
have a flat tire" on page 245.
If the warning light does not go off more than 15 minutes after
the tire inflation pressure is adjusted, the system might be
malfunctioning. Consult your Lexus dealer.
50
CAUTION
If the warning light comes on, take your vehicle to the
nearest Lexus dealer, tire dealer or gas station as soon
as possible, observing the following instructions:
D Decelerate as soon as possible to the most
appropriate speed that conditions permit. Do not
drive over 90 km/h (55 mph).
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.
If the warning light blinks and chimes sound every few
minutes, the tire inflation pressure is very low.
Decrease your speed as soon as possible and call a Lexus
dealer, Roadside Assistance or Customer Service Assistance
(see"Foreword"). And take your vehicle to the nearest Lexus
dealer or authorized tire dealer at a speed below 90 km/h (55
mph).
When you drive your vehicle after the low tire pressure warning
light blinks and chimes sound, the tire must be replaced. Do
not use the repaired tire.