Lexus LS 600h L 2012 Owner's Manual page 537

5-2. Steps to take in an emergency
Stopping the hybrid system
■
Shift the shift lever to "P" and press the "POWER" switch as you normally do when
stopping the hybrid system.
Replacing the key battery
■
As the above procedure is a temporary measure, it is recommended that the elec-
tronic key battery be replaced immediately when the battery is depleted.
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