Hello folks, I have a relative who also has a 2008 Accord sedan, auto, except hers is a LX-P with the 16" wheels instead of the 17" on mine. The same thing happened with her TPMS light going on and off due to cold. It must be a cold issue for that model. When the outside temp drops to 25F or lower the TPMS will stay on and remain on even on the highway until the outside temp goes to at least 30F and after at least a few hours. Apparently its not a sensor problem or a tire problem its just a Honda fluke with that model and with a certain degree of coldness...weird! Al