Toyota Lexusc Owner's Handbook Manual page 737

BODY
2. Use a good quality polish and wax. If the finish has become
extremely weathered, use a car-cleaning polish, followed by
a separate wax. Carefully follow the manufacturer's
instructions and precautions. Be sure to polish and wax the
chrome trim as well as the paint.
NOTICE
If a nozzle becomes blocked, do not try to clear it with
a pin or other object. The nozzle will be damaged.
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3. Wax the vehicle again when water does not bead but
remains on the surface in large patches.
Windshield washer nozzles: Make sure that the nozzles do
not become blocked when waxing. If a nozzle becomes
blocked, contact your Lexus dealer to have the vehicle
serviced.