tire pressure

Discussion in 'General Motoring' started by Rob, Feb 19, 2009.

  1. Rob

    Rob Guest

    Hi,
    I picked up my brand new 2009 Dodge grand caravan SE yesterday. the tire
    aire pressure lite is on and they told me thats normal because they checked
    all tires this morning. it is kind of anouning to see that lite is one all
    the time, if it is on all the time why Chrysler put it in?
    Any comment?
    Rob
     
    Rob, Feb 19, 2009
    #1
  2. Rob

    Wayland Guest

    Assuming that it's like our 2008, the light should go out after driving for
    10 minutes at speeds above 15 mph (if the tires are properly inflated).

    I'd check the tires next time they are cold and if the pressures are correct
    and the light stays on after 10 minutes of driving take it back for repair.

    Pat
     
    Wayland, Feb 19, 2009
    #2
  3. Rob

    sdlomi2 Guest

    Check door plate/spec'd tire pressure. If it's like mine, it calls for
    35 psi--lots of folks still put in like 30-32. HTH, s
     
    sdlomi2, Feb 20, 2009
    #3
  4. Congrats on your new car. May you enjoy many happy miles of motoring.

    :)
    DAS

    To send an e-mail directly replace "spam" with "schmetterling"
     
    Dori A Schmetterling, Feb 20, 2009
    #4
  5. Rob

    Josh S Guest

    I wouldn't like that light on all the time either.
    If that how it works, I'd have it disabled.
     
    Josh S, Feb 22, 2009
    #5
  6. Rob

    C-BODY Guest

    The tire pressure warning light is there for a valid reason--period. If
    everything is working lie it should, it should not be on--period.

    Now, if the temperatures have changed from what they were when the tires
    were initially inflated, that can trigger it as tire pressure drops when
    ambient temps drop. If everything was initially fine and then it came
    on, that can be the reason, if the pressures go "out of programmed
    parameters", so to speak.

    I presume that it is a direct reading system as GM uses rather than
    using the wheel speed sensors to note a wheel turning faster than its
    axle-mate on the other side of the vehicle.

    It is possible that the system has not "learned" where the individual
    sensors are on the vehicle, too, so it could be that the pre-delivery
    inspection operatives might not have done that when they had the
    vehicle. I do know that if the tires are rotated, the system must
    relearn where the individual sensors are on the vehicle so that correct
    readings can be transmitted to the system. Each sensor has a unique
    radio frequency code th the system detects so it knows where each
    tire/wheel is on the vehicle.

    If the tire pressure light is on, you should be able to read each
    individual tire's current pressure via the Driver Information Center
    prompts. OR any other time you might desire.
    Either with one tire's pressure per prompt or with axle pairs.

    The light can also be tripped if the tires are inflated too much. I
    also suspect that you can program the "relearn position" function that
    way too, rather than having to use a scan tool.

    There might also be some information on the system in the owner's
    manual.

    OR you can play the "dissatisfied customer" and take it back to your
    salesperson and request he/she get it taken care of BEFORE you get your
    Delivery Customer Satisfaction Survey.

    Check the Driver Information Center FIRST, to see what the tire pressure
    readings are. If you desire, then you can cross check that with a tire
    gauge of known accuracy to see how things are . . . ONLY when the tires
    are "cold" rather than after driving.

    Regards,

    C-BODY
     
    C-BODY, Feb 22, 2009
    #6
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