tpms light

Discussion in 'General Motoring' started by gymmy2, Mar 4, 2007.

  1. gymmy2

    gymmy2 Guest

    I just bought a new 2007 hyundai sonata and the tire pressure light
    has come on twice..I took it back to dealer and they adjusted tire
    pressure and light went happened again today and when i
    checked the tire pressure it seemed about the same in each tire 33
    lbs...I am going to have to return to dealer again ...does anyone have
    any thoughts on this topic...the only thing i noticed in both
    occurances was the outside temp had dropped about 10 degrees from the
    day before...
    gymmy2, Mar 4, 2007
  2. Was that an option? Mine does not have it, nor was it listed as an option
    at the time.

    The temperature drop will cause a pressure drop. If it is monitoring actual
    pressure rather than the old GM type that counted wheel rotation, that could
    set it off.
    Edwin Pawlowski, Mar 4, 2007
  3. gymmy2

    hyundaitech Guest

    Exactly correct, Edwin. If the temperature is cold enough, the pressures
    can be low enough to turn on the lamp. If that's the case, the lamp
    should go back out as the tires warm to operating temperature while
    hyundaitech, Mar 4, 2007
  4. gymmy2

    art.obrien Guest

    We had similar headaches with our Entourage with the TPMS system last
    fall when the temp was warm in the day and really cool the next
    morning. For us it was temp related. On the Entourage if the psi
    falls below 30 it sets off the light (35 is the recomended pressure)
    After banging our head against the wall and a trip to the dealer the
    best fix was to inflate the tires right up to the 35 mark (or whatever
    the recomended pressure is for the sonata) during the coldest morning
    of the week before driving anywhere. Since then we have been OK all
    winter -knock wood-. The dealer suggested filing with nitrogen
    instead of air because it doesn't fluctuate as much with temperature.
    We never did that now that we know how the sytem works.

    If you are still having problems, expecially with a larger loss of
    pressure a dealer visit is definately in order.
    art.obrien, Mar 4, 2007
  5. gymmy2

    Double Tap Guest

    This is exactly to my coworkers POS BMW 750LI works. The temperature takes a
    major drop and the light comes on. The system sucks just like the rest of
    the electronics in the car. I can just imagine how he feels about having a
    $90,000 car that sees the dealer more than the highway. Next car for him is
    the LS460L. IMHO the best car being made today.

    Double Tap
    Double Tap, Mar 4, 2007
Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.