Lexus GS300 1998 Owner's Manual page 280

STARTING AND DRIVING
" 1 Power position
2 Normal position 3 Snow position
2. Set the driving pattern selector switch to the "Normal"
position.
Your transmission has a driving pattern selector switch which
allows you to select "Power", "Normal" or "Snow" mode to
suit your driving condition. For ordinary driving, Lexus
recommends that you use the "Normal" position to improve
fuel economy.
3. For more powerful acceleration and sporty driving,
use the "Power" position.
In the "Power" position, the "ECT PWR" light in the
instrument cluster is on and the transmission is shifted up at
higher vehicle speeds and shifted down more responsively
than in the "Normal" position.
For "Snow" mode, see "Electronic Throttle Control
System" on page 279.
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