The tire pressure warning came on and indicated the pressure on one tire had dropped to 5 psi and to pull over immediately. Got out and all the tires looked normal. Didn't have a tire pressure gauge to verify. Since everything looked normal and didn't notice any pulling to one side when parking, decided to drive short distance down the road to get a tire gauge. When I went to start the car, the system said it was still starting up and to wait and push on brake after message clears. (First time I've seen that - maybe system was rebooting?) I did that and eased out of the parking lot. As the pressure sensors started to register - all tires reported normal pressure and the warning cleared. Didn't see any more warnings after that. I later verified the tires did have about 43 psi. Has anyone experienced this? Did system just need to reboot or is a sensor starting to go out? Just had the car for one week and this has been the first issue that has come up.