Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum - View Single Post - Low Tire Prssure what?
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Old 01-26-2013, 11:20 PM   #12
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Originally Posted by BetaDnB View Post
I know you know a lot about this car, however anytime I've put air in my tires with the light on (including this morning) I do so with the car running. When I reenter my car the light is already off.
Some TMPS sensors will go out of low power mode when they detect a relatively large change in air pressure.

In the case of the OP, it seemed that the TPMS system was working correctly since the tire pressures were really low.
I was curious to know if he had driven his car after adding air to the tires.
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