GPS Not Working. Home location not accurate

Discussion in 'Prius v Audio and Electronics' started by prevee5, Sep 16, 2022.

  1. prevee5

    prevee5 Member

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    2012 Prius v Model 5, Non-ATP, 130K miles

    Gps suddenly doesn’t know its location. Home is now 12 miles away. Anyone know of a fix?

    Radio and Satellite / SiriusXM working normally so probably not antenna?

    Don’t use GPS much since we have cellphone GPs but nice to have as a backup.

    Please advise.
    Thanks!
     
  2. rjparker

    rjparker Tu Humilde Sirviente

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    Gps has a separate antenna
     
  3. prevee5

    prevee5 Member

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    Has the GPS antenna failed?
    Anyone had this issue?
    Where is the GPS antenna?
     
  4. rjparker

    rjparker Tu Humilde Sirviente

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    It is under the dash, passenger side if I remember correctly. @gromittoo is the resident expert on the mfd.
     
  5. Air_Boss

    Air_Boss Senior Member

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    If displayed GPS location changes as you drive, but is wrong, it is the system logic or the satellite ephemeris reads/captures that are erroneous.
     
    #5 Air_Boss, Sep 24, 2022 at 10:03 AM
    Last edited: Sep 24, 2022 at 10:10 AM
  6. prevee5

    prevee5 Member

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    Yes, gps updates while driving and instructs you to turn on streets that don’t exist in the area I’m driving.
    Any fix for this or is the GPS circuit in the head unit “dead”?
    Would a system reset do anything?
     
  7. rjparker

    rjparker Tu Humilde Sirviente

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    If the gps antenna is weak it may not be capturing multiple satellites which degrades its accuracy.
    @gromittoo ?
     
  8. Air_Boss

    Air_Boss Senior Member

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    If there are streets the nav system doesn’t know about, it means they are newer than the nav database. Nothing the GPS can do to map streets it doesn’t know exist.
     
  9. prevee5

    prevee5 Member

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    Just to clarify, GPS thinks Home is about 20 miles away from where my actual Home is. No matter where I am, gps mostly routes me to n entered destination starting at my “Home”. Tells me to turn here and there on actual streets but they are nowhere near where I currently am. Seems to call out commands at random. Pretty weird
     
  10. Air_Boss

    Air_Boss Senior Member

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    Then it is a system logic or satellite ephemeris issue.
     
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