Got in the car last night and the yellow warning came up when I started the car. I've already had two flat tires since December, I think one of my neighbors is out to get me! After visually inspecting the tires twice, I can't find anything obvious sticking out of any of them. The TPMS shows all 4 tire pressures in yellow and the spare pressure in green - so I'm wondering if the system just hiccupped and needed to be reset.

Hopefully Roadside Assistance wont have to come rescue me on the side of the road...

Check the pressures with a manual pressure gauge, if ok, just store the current values and you're good to go.

Hopefully that's all it takes and I wont find anything sticking out of any of my tires!

Store and reset. Everytime my TPMS "responds", I actually have picked up a nail. Had another nail last week. Two "plugs" in the rear, each tire, I do get nervous at the occasional 100MPH or GA400!

Everytime this has previously happened and I just reset the system thinking it was nothing... within a day or two I found the offending hardware sticking out of my tire! Unfortunately, one of the nails was in the sidewall so it couldn't be plugged, had to replace a six month old tire that was still like new!