Got it.That's my main worry. I don't want it throwing a tire pressure light if it gets to that point. If it doesn't but its still faulty, I can ignore it.
I'm actually not. The cold/non-driven PSI on the car is 34-36 PSI. The 37-39 PSI that was shown yesterday is a result of me driving home for about 30 minutes and it was a rather hot day too..
If that sensor continues to drop its reading until it's below the low air pressure setpoint and trips the low tire pressure warning, I don't think that will clear on your information display and will remain on until the pressure reading is corrected. I don't believe you can cancel it either.