Sevice Tire Monitoring System???

Was putting air in one of my tires yesterday and noticed that there was a thing called relearn tire postion on the display center. Didnt realize that was there since I had the tires rotated and they were backwards (call me stupid). After pushing the button it now says Service Tire Monitoring System and only reads 1 tire. Worked fine before I hit that damn button. Any clue?

Was putting air in one of my tires yesterday and noticed that there was a thing called relearn tire postion on the display center. Didnt realize that was there since I had the tires rotated and they were backwards (call me stupid). After pushing the button it now says Service Tire Monitoring System and only reads 1 tire. Worked fine before I hit that damn button. Any clue?

Year make and model and size and engine?
Are all tire even pressure?
Have you looked in the owners manual for the reset procedure?