Speedometer shows 0mph (odometer not going up, trip A & B not going up, no cruise)

Discussion in 'Gen 2 Prius Technical Discussion' started by andy song, Nov 20, 2020.

  1. andy song

    andy song Junior Member

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    Title pretty much says it all

    Just bought a 2007 prius and it runs and drives fine

    Yesterday I get in the car and head out and tried to set the cruise control and it won't set. Then k realized my speed is 0

    Odometer not going up

    Trip A & B not going up

    Everything else is normal

    Any ideas?
     
    #1 andy song, Nov 20, 2020
    SFO likes this.
  2. mr_guy_mann

    mr_guy_mann Senior Member

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    I would suggest you get a mini vci cable with a copy of techstream software and set it up on an old windows laptop. That way you can scan all of the computer modules on the car to check for fault codes that could point you in the correct direction.

    I don't recall the specifics on the prius but typically something like the ABS or transmission module will take readins from a sensor and process that into a Vehicle Speed Sensor signal and send that info out over the data network. Other modules like the engine computer or the Combination Meter (CM or "speedo") will read and use that data.

    So you need to see if the problem is that somehing isn't creating the VSS data or signal, OR if the CM can't talk to the network.

    Posted via the PriusChat mobile app.
     
    #2 mr_guy_mann, Nov 21, 2020
  3. mehranali012

    mehranali012 Junior Member

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    What dashboard show any error message

    SAMSUNG-SM-G928A ?
     
    #3 mehranali012, Feb 28, 2021
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