Lexus LS 600h L 2012 Owner's Manual page 536

Changing "POWER" switch modes and starting the hybrid system
Ensure that the shift lever is in "P" and apply the brakes.
STEP 1
STEP 2
To change "POWER" switch modes: Within 10 seconds of the
STEP 3
buzzer sounding, release the brake pedal and press the
"POWER" switch. Modes can be changed each time the switch is
pressed. (→P. 185)
To start the hybrid system: Press the "POWER" switch within 10
seconds after the buzzer sounds, keeping the brake pedal
depressed.
In the event that the hybrid system still cannot be operated, contact your
Lexus dealer.
5-2. Steps to take in an emergency
Touch the Lexus emblem side of
the electronic
"POWER" 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.
key to the
533
5