bought me to this forum. I had a recurring leak in the front left tire (3x in 4 months) that was detected by the TPMS; the Shop foreman diagnosed it as a leaking stem valve. I agreed to have the shop replace the stem valve (TPMS sensor). Bummer! I was told I had to drive the car at 15 MPH for 1/2 mile to reset the warning msg. Didn't happen. A day later I am still dealing with the issue. A forum post listed on Google focused in on the resetting procedure I/shop have to do to reset the TPMS. Now I am tracking down my options. Live and learn.