Lexus SC 430 2004 Manual page 307

IN CASE OF AN EMERGENCY
Lexus Link transceiver antenna
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The Lexus Link transceiver antenna is removable. Before
taking the vehicle to an automatic car wash, disconnect
the antenna by unscrewing it from the body mount. When
you remove the antenna, make sure the ignition is turned
off.
Use only the supplied or an approved antenna. Unauthorized
antennas, modifications, or attachments could damage the
Lexus Link System and may violate FCC regulations.
CAUTION
Persons who use a medical appliance like a pacemaker
should not touch or come in close contact with the
antenna while the vehicle is ignition on. Otherwise, the
analog cellular signals
operation of a medical appliance.
288
may produce improper
NOTICE
D Do not contact with the antenna, this may affect
quality of transceiver's operation and may cause the
unit to operate at a higher power level than needed.
D If you forget reattaching the Lexus Link transceiver
antenna, the Lexus Link System may not function
properly.
D To prevent damage to the antenna, make sure it is
removed before driving your vehicle through an
automatic car wash.