Lexus 2003 LS Owner's Manual page 421

Long exposure to direct sunlight may cause the
leather surface to harden and shrink. Keep your
vehicle in a shaded area, especially in the summer.

The interior of your vehicle is apt to heat up on hot
summer days, so avoid placing on the upholstery
items made of vinyl or plastic or containing wax as
these tend to stick to leather when warm.

Improper cleaning of the leather upholstery could
result in discoloration or staining.
Synthetic Leather Areas
(Dash and sun visors)
The synthetic leather areas may be easily cleaned with a
mild soap or detergent and water.
First vacuum over the upholstery to remove loose dirt. Then,
using a sponge or soft cloth, apply the soap solution to the
synthetic leather. After allowing it to soak in for a few minutes
to loosen the dirt, remove the dirt and wipe off the soap with a
clean damp cloth. If all the dirt does not come off, repeat the
procedure. Commercial foaming–type cleaners are also
available which work well. Follow the manufacturer's
instructions.
NOTICE
Do not use solvent, thinner, gasoline or window cleaner
on the interior.
BODY
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