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Thread: Can't keep TPMS light off on '09 Hyundai Accent with Ateq VT55

  1. #1
    atikovi
    Guest

    Can't keep TPMS light off on '09 Hyundai Accent with Ateq VT55

    Left front sensor was broken so I replaced it with a new Hyundai sensor. Scanned and reset the system. 20 miles later the light is back on. Reset it again and after another 20 miles the light is back. Any ideas?

  2. #2
    TPMSProAlbert
    Guest
    Hello,

    When you scanned the sensors with the VT55 did it show them all registering and active?

  3. #3
    atikovi
    Guest
    The new sensor reads Delay High Line while the others are Fixed Low Line. I'm finding out that these Hyundai sensors are shipped in High Line mode and you need a scanner to set them to Low Line. And the VT55 doesn't do that function. ARRGH!

  4. #4
    TPMSProAlbert
    Guest
    Low- and high-line versions of TPMS receivers on the Hyundai Elantra
    An exciter scan tool is needed to perform TPMS service

    By: Information provided by Mitchell 1
    Figure 1
    Figure 1

    SUBJECT VEHICLE: 2008-10 Hyundai Elantra.

    SENSOR IN TIRE? No, sensors are mounted in the wheels.

    SPECIAL TOOLS NEEDED? Yes, a TPMS exciter scan tool.

    The tire pressure monitoring system (TPMS) on 2008-10 Hyundai Elantras uses a receiver that is available in low-line and high-line versions. There are four radio frequency (RF) tire pressure sensors, two warning indicators on the instrument cluster and a data circuit to perform system functions. Vehicles with high line systems have three warning indicators and include four low-frequency initiators (LFIs). When tire pressure is below the allowed threshold, or a rapid leak is detected, the low pressure warning light on the instrument cluster will be illuminated. On vehicles with a high line system, a tire location light also will illuminate to indicate the faulty tire.

    If the system detects a receiver or sensor fault, or if it detects a fault that is external to the receiver or sensor, the TPMS warning indicator on the instrument cluster will be illuminated. If the fault is considered “critical,” the light will stay on throughout the entire ignition cycle.

    In order to remove an old sensor and install a new one, follow these steps:

    1. Remove the wheel and tire assembly. CAUTION: Avoid tire/tool contact with the valve while demounting the tire.

    2. Deflate the tire and remove the balance weights. The bead should be broken about 180 degrees from the valve side of the wheel. The bead breaker should not be set too deep. Demount should end near the valve. CAUTION: The valve nut should not be re-used.

    3. While handling the sensor with care, remove the valve nut.

    4. Discard the valve immediately.

    5. Assemble the valve to the sensor, and turn the valve three times with the square part of the screw in the slot. See Figure 1. CAUTION: Ensure the sensor feet are against the wheel throughout the remainder of the assembly process.

    6. Ensure that the valve hole and mating face of the wheel are clean. Mount the assembly to the wheel. The fit should not be tight (it should still be possible to easily adjust the valve angle). CAUTION: Ensure the grommet remains in contact with the wheel.

    7. Tighten the washer and nut by hand until the valve thread meets the nut’s built-in calibrated stop.

    8. Using an appropriate torque wrench, tighten the nut to 31 to 40 in.-lbs. (3.5-4.5 N.m). It is normal to feel a break as the 20 in.-lbs. (2.3 N.m) calibrated stop in the nut snaps and the torque falls. Increase the torque smoothly in order to achieve a clean break of the stop.

    9. Lubricate the tire bead (not the rim). Do not use excessive lubrication.

    10. Start mounting the tire about 5.9 inches from the valve. Move the mounting tool away from the valve. Avoid tire/tool contact with the valve. Finish with the mounting tool near the valve.

    11. Adjust inflation pressure of wheels. Install the valve cap.

    12. If installing a new sensor, it must be initiated.

    To initiate the tire pressure sensor, follow these steps:

    1. Holding the TPMS exciter scan tool within three inches of the sensor valve, read each tire pressure sensor ID in the following order: front-left, front-right, rear-left, rear-right.

    2. Connect the TPMS exciter to the Data Link Connector located under the left side of the instrument panel. Register the four sensor IDs to the receiver. See Figures 2 and 3.

    <p>Figure 2</p>

    <p>Figure 3</p>

    3. Disconnect the TPMS exciter from the diagnostic link. Cycle the ignition and wait four minutes. Ensure that “NORMAL RECEIVER STATE” is displayed.

    Read more: http://www.moderntiredealer.com/chan...#ixzz2Ndx4B6Xw

  5. #5
    TPMSProAlbert
    Guest
    I actually just check on our techroom' s VT55 and it has a function to force low line..you may need a software update if your VT55 is an older model.

  6. #6
    atikovi
    Guest
    Quote Originally Posted by TPMSProAlbert View Post
    I actually just check on our techroom' s VT55 and it has a function to force low line..you may need a software update if your VT55 is an older model.
    I was on the phone with tech support for 10 minutes and they said the VT55 can't switch the sensor to low line. Spent $54 at a Hyundai dealer today to do it.

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