warranty what? I run 33 37 hot. when cold they trip a code. reset when you start the day and its all good.

 

Reset will work for me until the engine is stopped/restarted. I have to check and see if the partial load is selected, as I drive it usually alone or with my wife's hot sister... naaa, just kidding

 

Check to make sure the gauge you are using is correct and not the tpms. Second I had problems on my 08 with no reading, low pressure, etc. They dealer said their is a "module" that reads the info from the tire pressure monitors and that they go bad sometimes. Might want to check that. I put new wheels and tires on the car right after and no problems since.
JS

 

I am having the same problem...out of the blue on June 30 my left rear showed -4...i keep a manual gauge in the car, all 4 tires were fine...for the next few days i would have to reset it every time the car was started...i didnt have a problem for 2 weeks and tonight, same problem...i put new tires on in may but didnt have a problem for a month so i dont think its that but i did wash the car last night, maybe it is a moisture problem?

 

Bump - having the same issue after driving in the rain. It happens to be the front right (passenger) side. Anyone found a fix for this? Tried resetting but to no avail
Thanks