Lexus IS F 2012 Owner's Manual page 500

5-2. Steps to take in an emergency
STEP 3
Trunk
Changing "ENGINE START STOP" switch modes and starting the engine
Shift the shift lever to P and apply the brakes.
STEP 1
500
After the operation is completed,
reinstall the cover.
Hook the upper claw of the cover
onto the upper catch on the vehi-
cle side, and then push on the
lower side of the cover.
Make sure that the lower claw of
the cover is securely fastened to
the lower catch on the vehicle side.
If the cover is not securely
attached, it may fall off while driv-
ing.
Turn the mechanical key clock-
wise to open.