Lexus LS460 2008 Owner's Manual page 659

Stopping the engine
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Shift the shift lever to P and press the "ENGINE START STOP" switch as you nor-
mally do when stopping the engine.
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 depletes. (P. 587)
5-2. Steps to take in an emergency
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