Lexus GS430 User Manual page 380

STARTING AND DRIVING
Starting the engine
Normal starting procedure
G31035
When depressing the brake pedal while carrying an
electronic key, make sure the green engine switch
indicator light comes on. And then push the engine
switch to start the engine.
If you press the engine switch while the brake pedal is
depressed and the transmission is in "P" or "N", the engine will
start even if initially in "OFF", "ACC" or "IG−ON" mode.
If you start the engine in "OFF" mode, the engine immobilizer
is disabled, and the security indicator light goes off.
If you push the engine switch while the brake pedal is
depressed with the transmission not in "P" or "N", "IG−ON"
mode will be selected with the engine not running.
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If the engine stalls ...
Simply restart it , using the correct procedure given in normal
starting.
If the engine will not start
See "If your vehicle will not start" on page 468.
NOTICE
D Do not race a cold engine.
D If the engine becomes difficult to start or stalls
frequently, have the engine checked immediately.