From: Paul@Houston.Texas   
      
   The Real Bev wrote:   
   > 2013 Corolla S with the original wheels, tires and pressure sensors.   
   > There are only 33K miles on the tires and the tread is just fine.Ever   
   > since I've had it (2016) a single tire loses air very slowly -- it used   
   > to go from 32 (or 35, I'm not real picky) down to maybe 24, and the   
   > light would come on.  A month or so later the same thing happened.  Time   
   > between lights is now between one and two weeks.   
   >   
   > Dealer said he couldn't see a problem.  (I have no actual proof that he   
   > actually looked.)  I have a nice plug-in tire pump (the $35 one from   
   > Harbor Freight;  the cheaper one burned up rather quickly when I tried   
   > to pump all four tires) so there's no real problem, and I'm unwilling to   
   > load the tire up with slime, but I'd really like to know WTF is   
   > happening.  Sooner or later I'm going to need new tires and it would be   
   > nice to know if I need a new pressure sensor too.   
   >   
   > BTW, I really like the tires (Goodyear Eagle RS-A) -- excellent   
   > cornering on the road I take to go skiing.  People really need to be   
   > ashamed when they get passed by a granny in a 9-YO Corolla!   
      
   If the manual tire gauge agrees with the pressure sensor then the   
   pressure sensor is ok.  You did not say if it is always the Same tire -   
   will assume so.   
   Every time I had that problem there has been a nail or screw in the   
   tread.  The left rear of my Kia had that problem for last two years and   
   I finally upped the air pressure to 40+ and soaped it.  Found the screw   
   and removed it with needle nose pliers and then plugged it.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)