Have a 2012 Toyota Rave_4.Low tire press light stay's on all the time even though press.'s are the same. I put in 34 lbs. air press. in each tire

SOURCE: low tire pressure light won't go out

Idiots. The tire pressure lights go by wheel-spin sensors inside the wheel. If they differ then the tire pressure is low in subsequent tire. They are really not that accurate but helpful if you have a really low tire. There is NO sensor inside the tire.

SOURCE: 2005 toyota highlander, what is

Look on the end of the drivers door or door jam for a sticker that should list the pressures and tire size. I had air removed from my tires and installed nitrogen. It keeps the right level better and doesn't cause the sensors to go bad like air can. $5 a tire at most tire dealers.

SOURCE: TPM light stays on. All 4 tires have 26 lbs of

32 psi is the usual recommended pressure but you may have to fill the tires to 35 psi to make the TPM system reset. That's how most systems recognize that you have serviced the tires. Most TPM systems will indicate low tire pressure around 26-28 psi.