Ok, my right front sensor keeps acting up. The tire/wheel is fine and holding pressure so it's the sensor or ? The reading in the car after a few trips around town reads -4 psi. I've reset it and it then works and reads correctly (checked with a few pressure gauges) ... Also didn't whack anything like a pothole, etc. so nothing was jarred or loosened. Just started reading incorrectly.

Specs are 2012 PTT.

Does anyone know if it's the sensor or the system itself?

 

Do you have bigger tires than stock? This happens to me after 2-3 hours long trips.

My tires "lose" air after hot/cold environments.

I just put air.

If stock, and if not losing air, then TPMS might be going.

 

I have OEM 20" turbo IIs. It occurs intermittently and only when I shut car down.

I'm guessing sensor is going. Only 20k miles but never had an issue with any sensors so not sure of lifespan.

 

Sensor hopefully.

 

Doesn't the sensor have a battery in it that needs to be replaced? I remember reading something like that a while back....

 

Negative the sensor batteries are not replaceable. U can buy a set if 4 on eBay or thru the forums for less than 200 delivered.