lextek1
Posts: 10
Joined: 1/6/2008
Status: offline
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LETS SEE IF I CAN HELP YOU OUT. IN THE WINTER THE COLD WEATHER DROPS THE TEMPERATURE AND THEREFORE PRESSRE OF YOUR TIRES. SO THE LIGHT WILL COME ON USUALLY UNTIL YOU DRIVE THE VEHICLE FOR A WHILE. IF YOUR LEXUS IS FAIRLY NEW IT CAN BE THAT THE THRESHOLDS FOR YOUR TIRE PRESSURE SENSORS WERE SET TOO HIGH. WHEN INSTALLED AT THE FACTORY, THE TIRES WERE PUMPED TO ABOUT 50 PSI TO PREVENT DAMAGE DURING TRANSPORT SO UR SENSOR NOW LOWERED TO 35 STILL KEPT THE OLD THRESHOLD. THE DEALER CAN REINITIALIZE THE SENSORS FOR YOU OR YOU CAN DO IT AT HOME. THE SENSOR THRESHOLD WILL SET TO 20% OF THE PRESSURE IN THE TIRE WHEN YOU RESET IT. SO PUT YOUR TIRES TO ABOUT 30PSI THEN HOLD THE RESET BUTTON UNTIL IT BLINKS THREE TIMES. THE LIGHT WILL REMAIN ON BUT NOW THE SENSOR WILL LEARN. THEN SET YOUR TIRES TO 35 AND YOUR NEW THRESHOLD WILL BE 20% OF THE INITIAL 30PSI, SO ABOUT 26PSI.
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tire pressure indicator - 
