2006 Lexus GS 300 Owners Manual - Page 1092

STARTING AND DRIVING Replacing tires and wheels When replacing the tires and wheels, be sure to install tire pressure warning valves and transmitters. ID codes on the tire pressure warning valves and transmitters are registered on the tire pressure warning ECU. When replacing a tire pressure warning valve and transmitter, it is necessary to register the ID code of tire pressure warning valve and transmitter. Have the ID code registered by your Lexus dealer. If the ID code is not registered, the system will not work properly. After about 1 hour, the tire pressure warning light blinks to indicate a system malfunction. Tire pressure warning reset switch G31004a NOTICE When the tires or tire pressure warning valves and transmitters must be replaced, have them replaced by your Lexus dealer. The tire pressure warning valves and transmitters will be affected by the installation or removal of tires. When initializing the system, the present tire inflation pressure is stored as standard. The tire pressure warning system determines decreased air pressure by comparing the present and the standard tire inflation pressures. When you change the set tire inflation pressure, it is necessary to initialize the tire pressure warning system. D When rotating the tires on vehicles differing with front and rear tire inflation pressures. D When changing the tire inflation pressure by changing traveling speed or load weight, etc. D When changing the tire size. 446