Lexus SC 430 2004 Manual page 245

STARTING AND DRIVING
CAUTION
When the tires whose ID code is registered at "MAIN"
are used, the system does not work properly with the
selector switch set at "2nd". If the tires whose ID code
is registered at "2nd" are stored nearby, the system will
detect their tire inflation pressure (and vice versa).
Liquid sealants for flat tires
NOTICE
Do not use liquid sealants for flat tires as the tire
pressure sensors will be damaged.
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