Lexus SC 430 2002 Manual page 266

IN CASE OF AN EMERGENCY
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8. Lower the vehicle completely and tighten the wheel
nuts.
Turn the jack handle counterclockwise to lower the vehicle.
Use only the wheel nut wrench to tighten the nuts. Do not use
other tools or any additional leverage other than your hands,
such as a hammer, pipe or your foot. Make sure the wrench
is securely engaged over the nut.
Tighten each nut a little at a time in the order shown. Repeat
the process until all the nuts are tight.
CAUTION
D When lowering the vehicle, make sure all portions of
your body and all other persons around will not be
injured as the vehicle is lowered to the ground.
D As soon as possible after changing wheels, have the
wheel nuts tightened by torque wrench at 103 N·m
(10.5 kgf·m, 76 ft·lbf.).
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9. After changing the wheel, check the air pressure of the
replaced tire. Stow all the tools, jack and flat tire securely.
Load the flat tire in the trunk with the retractable hardtop
closed.
If the pressure of the replaced tire is low, drive slowly to the
nearest service station and fill to the correct pressure.
Do not forget to reinstall the tire valve cap as dirt and moisture
could get into the valve core and possible cause air leakage.
If the cap is missing, put a new one on as soon as possible.
This is the same procedure for changing or rotating your tires.
CAUTION
Before driving, make sure all the tools, jack and flat tire
are securely in place in their storage location to reduce
the possibility of personal injury during a collision or
sudden braking.