Originally Posted by kellyefields

sounds like the impact may have interfeared with the TPMS causing it to reset itself. I would just check the tire pressure in all the tires to be sure and continue to check once a month ( i do a check at every fillup with the tire pressure guage that has a magnet in the fuel door to remind me) to ensure it is still working properly. If you dont find a problem I would not worry much about it.