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You should be fine until replacement. I have a RR sensor that every couple of weeks will go to xx at the same spot on the freeway. I think RF interference is overwhelming a weak battery in that TPMS. After arriving at work and parking for the day, it is back to normal later in the day. Been doing this for a couple of years and the car is now just 5-1/2 years old. Will have both rear sensors replaced when I get the first set of replacement tires for the rear.