Lexus LS460 Owner's Manual page 909

Starting the engine
1
Ensure that the shift lever is in P and depress the brake pedal.
2
Touch the Lexus emblem side
of the electronic key to the
engine switch.
If any of the doors is opened or
closed after the key was touched to
the switch to start the vehicle, an
alarm will sound to indicate that
the start function cannot detect the
key.
3
Press the engine switch within 10 seconds of the buzzer sound-
ing, keeping the brake pedal depressed.
In the event that the engine still cannot be started, contact any
authorized Lexus dealer or repairer, or another duly qualified and
equipped professional.

Stopping the engine
Shift the shift lever to P and press the engine switch as you normally do when
stopping the engine.

Replacing the key battery
As the above procedure is a temporary measure, it is recommended that the
electronic key battery be replaced immediately when the battery is depleted.
(P. 796)

Alarm (if equipped)
Using the mechanical key to lock the doors will not set the alarm system.
If a door is unlocked using the mechanical key when the alarm system is set,
the alarm may be triggered.

Changing engine switch modes
Within 10 seconds of the buzzer sounding, release the brake pedal and press
the engine switch.
The engine does not start and modes will be changed each time the switch is
pressed. (P. 208)
LS460_EE (OM50D49E)
7-2. Steps to take in an emergency
879
7