2006 Lexus GS300 immobilizer

STARTING AND DRIVING
345 “ACC” mode
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This mode allows some accessories to be operable such
as the radio, even if the engine is not running. An amber
indicator light turns on at the engine switch.
To select the “ACC” mode from “OFF” mode, push the engine
switch once without depressing the brake pedal. The engine
immobilizer is disabled and the security indicator light goes
out. (For details, see “Engine immobilizer” on page 11.)
If you cycle once through all the modes (“OFF”, “ACC”,
“IG−ON”) with the driver’s door closed, the second time you
select the “ACC” mode, the above message will appear for a
few seconds.
If the vehicle is left in “ACC” mode for about an hour, the engine
switch is automatically off.
If the driver’s door is opened with the transmission in “P”, a
buzzer will remind you in “ACC” mode.“IG−ON” mode
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“IG−ON” mode has two conditions: all gauges, meters
and accessories on and the engine is not running, or
engine running.
To select the “IG−ON” mode while the engine is not running:
From “OFF” mode—push the engine switch twice without
depressing the brake pedal.
From “ACC” mode—push the engine switch once without
depressing the brake pedal.
The engine switch indicator light will be illuminated amber if the
engine is not running, and will turn off when the engine is
running.

STARTING AND DRIVING
346If you push the engine switch while the brake pedal is
depressed with the transmission not in “P” or “N”, “IG−ON”
mode is selected with the engine not running.
It is not a malfunction if the needles on all meters and gauges
move slightly when selected in “IG−ON” mode.
NOTICE
Do not leave the engine switch in “IG−ON” mode while
the engine is not running. The battery will be
discharged.
“OFF” mode
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This mode turns the engine and all accessories off.
To select the “OFF” mode from “IG−ON” mode:
If the engine is not running, push the engine switch once
while the brake pedal is not depressed.
If the engine is running, push the engine switch once
regardless of brake pedal position while the vehicle is
completely stopped.
To select the “OFF” mode from “ACC” mode, push the engine
switch twice while the brake pedal is not depressed.
The engine immobilizer is automatically set, the security
indicator light blinks and the engine switch indicator light is
turned off. (For details, see “Engine immobilizer” on page 11.)
The steering wheel can be locked only in this mode.

STARTING AND DRIVING
350
Starting the engine
Normal starting procedure
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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.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 462.
NOTICE
Do not race a cold engine.
If the engine becomes difficult to start or stalls
frequently, have the engine checked immediately.