Lexus IS 350C 2012 Manual page 441

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Selecting ID codes
When replacing tires, make sure to select the ID code set that matches
the new tire set. If the tire pressure warning select switch is set to the
wrong tire setting, the tire pressure warning system will not operate
properly. After driving for about 20 minutes, the tire pressure warning
light comes on after blinking for 1 minute to indicate a system malfunc-
tion.
4-3. Do-it-yourself maintenance
Tire pressure warning valve and
transmitter ID code settings dis-
play
 
Press " " or " " repeatedly until
the setting display appears.
Switching ID codes
Press the "ON/OFF" button to
switch between "MAIN" and
"2ND" ID codes.
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