OEM TPMS and high pressures

Discussion in 'Honda Hybrids' started by pcope, May 14, 2012.

  1. pcope

    pcope Well-Known Member

    hi all,

    just got my 2008 HCH II back from the tire shop, having had them swapped over my winter tires/wheels to my 3-season tires/wheels (both OEM, with OEM TPMS installed). When I first drove home, the TPMS system seemed to behave ok (no warning lights, and the shop usually does things right). Then the next day, I pulled a classic rookie error, brought the tire pressures up from 36 psi to 42 psi (with air, not Nitro, and while the car and tires were cold), feeling groovy about my anticipated mileage. However, we're having a local heat wave, and about half way through my errands around town, the TPMS light came on. I stopped right away, found none of the tires low; rather, the pressures were up around 49-50 psi. Oops. I tried dropping the pressures back to 38 psi (cold) but the TPMS dash warning light remains lit.

    I checked my manual, which states that the OEM TPMS system should not respond to overly high pressures-- but is this correct? I know some of the aftermarket TPMS systems detect both low and high pressures. If the warning light was NOT activated by the high pressures, is this most likely due to an error by the tire shop when installing the summer wheels? It seems odd that the warning light did not light up until the following day.

    any tips?


    Philip C
  2. rfruth

    rfruth Well-Known Member

    Not sure about Honda's, wonder if Ford checks for low *and* high tire pressure ?
  3. 08EscapeHybrid

    08EscapeHybrid Moderator

    I know on my 08 FEH I had inflated my tires to the sidewall max pressure, and no warning light. When I had my tires replaced, the shop put Ford's recommended pressure in the tires, and the low tire pressure light came on, and the information display read low tire pressure until I got home and overinflated the tires again.

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