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2004-2007 Cadillac CTS-V General Discussion Discussion, Resetting the TPS's in Cadillac CTS-V Series Forum - 2004 - 2007; yeah two different things here... RFID tags in tires VS the TPMS sensors (valve stem Tire Pressure Monitor System sensors)...
  1. #31
    RippyPartsDept's Avatar
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    Re: Resetting the TPS's

    yeah two different things here... RFID tags in tires VS the TPMS sensors (valve stem Tire Pressure Monitor System sensors)
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  2. #32
    repenttokyo is offline Cadillac Owners Connoisseur
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    Re: Resetting the TPS's

    Quote Originally Posted by RoverGuy7 View Post
    there are no initiators or anything, just the sensors an antenna, and the module(which i believe is integrated into the i/p) the sensors know when the car is moving based on centrifugal force, and send signals that are picked up by the antenna module when they think they should, at different time intervals based on whats happening... less often when stationary, more often when moving, and they are forced to repeat their signals when pressure changes, thats why they can be programed by changing the pressures, once in 'learn' mode, the module just looks for the repeated signals as ties it to a wheel position
    too bad we couldn't use that rotational force to charge a battery.

  3. #33
    kevm14 is offline Cadillac Owners Connoisseur
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    Re: Resetting the TPS's

    Yeah I wondered about that myself. But if the originals last 8 years, that's not too bad. Also, RFID seems most useful when it simply responds with a set code when stimulated. TPMS sensors have transducers to change pressure into an electrical signal, obviously. So the RF signal varies.

  4. #34
    Aurora40's Avatar
    Aurora40 is offline Cadillac Owners Enthusiast
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    Re: Resetting the TPS's

    Quote Originally Posted by repenttokyo View Post
    too bad we couldn't use that rotational force to charge a battery.
    That is how they worked on my 1990 Corvette. They used piezo-electrics to power the sensor. However, they don't send a signal until the car gets rolling. In theory, they would last forever, but back then they were mounted on straps across the center of the wheel, vs tucked in by the valve-stem. And they invariably get broken off by tire shops.

    They also don't send a specific pressure back to the car. I don't know if that is why newer ones use batteries, because the circuits to drive sending a specific pressure need too much juice? Or if they just want to sell more replacement sensors?

  5. #35
    Oh5V is offline Cadillac Owners Member
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    Re: Resetting the TPS's

    the sensors use a 3v coin style battery...




    Im in the process of making a TPMS Emulator setup for my V. I just finished all the wiring diagrams tonight for the most part, just gotta power one up and start testing some stuff.

    And as for those saying something about the transmitter not really near the valve stem and more inside the rim, that's incorrect.
    The sensor actually uses the valve stem as the antenna.

  6. #36
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    JFensty is offline Cadillac Owners Enthusiast
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    Re: Resetting the TPS's

    How did you disassemble your TPMS? Took me a while but pretty sure it wasn't usable when I got mine to look like yours. Are the tabs soldered on to the battery?

  7. #37
    DDS rollin a CTS's Avatar
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    Re: Resetting the TPS's

    A tip to any of you reprograming your tpms's that I just learned the hard way...dont close your door when you get out to let air out of the tires, you might have locked the doors when you hit lock/unlock on the fob and therefore your door may lock behind you when you get out.

  8. #38
    612WharfAvenue is offline Cadillac Owners Member
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    Re: Resetting the TPS's

    I'm paranoid about that door stuff. If I'm doing something that requires the keys being in the car and me outside I generally roll down the window. I need to do this TPMS relearn, my L/R are switched.

  9. #39
    CadzillaTN's Avatar
    CadzillaTN is offline Cadillac Owners Connoisseur
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    Just remember you don't have to continually put air in/out of the tire waiting for a honk, a one second burst if either will do the trick, just hit it and be patient...

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