Kia Optima 2004 Owner's Manual page 195

WARNING -
LOOSE
CLOTHING/JEWELRY
Working under the hood with the
engine running is dangerous. It is
even more dangerous when you
wear jewelry, long hair or loose
clothing. These can become
entangled in moving parts and
result in injury. Therefore, if you
must run the engine while working
under the hood, make certain that
you pull hair back, remove all
jewelry (especially rings, bracelets,
watches, and necklaces) and all
neckties, scarves, and similar
loose clothing before getting near
the engine or cooling fans.
7-10
MAINTENANCE
WARNING -
ENGINE COOLING FANS
Because your engine cooling fans
are electrically controlled, they will
run if the ignition switch is on,
even if the engine is not running.
This could cause serious injury.
To prevent this, be sure the
ignition is off, unless you must
run the engine while performing
maintenance or an inspection.