Toyota Lexusc Owner's Handbook Manual page 581

IN CASE OF AN EMERGENCY
In the luggage compartment, open the right side
2
auxiliary box by pushing the button. You will find
the spare tire clamp bolt on the right side of the
auxiliary box.
Remove the cover as shown in the illustration.
3
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Put the adapter socket (for removing a spare tire)
4
on the spare tire clamp bolt.
5 Connect a jack handle and the adapter socket.
Turn the jack handle counterclockwise. The tire
will lower completely to the ground.