Lexus 2004 LS430 Owner's Manual page 426

IN CASE OF AN EMERGENCY
40L052
" Joint
1
When removing the jack, turn the joint by hand in
2
the "contract" direction until the jack is free.
When storing, turn the joint by hand in the
3
"expand" direction until the jack is firmly secured
to prevent it from flying forward during a collision
or sudden braking.
406
40L160
To remove the spare tire:
1 Remove the spare tire cover.
Loosen the bolt and remove it.
2
When storing the spare tire, place it with the inner side
of the wheel facing up. Then bolt the tire in place and
install the spare tire cover to prevent the tire from flying
forward during a collision or sudden braking.