FOB response slow???

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by kknguyen1168, May 23, 2015.

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  1. kknguyen1168

    kknguyen1168 Member

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    last couple my FOB response slow, I thought it was FOB battery, I replaced it, no help, If I stay about 20ft in front of the car I can not lock it, I have to stay close to the door before I can lock it. Do you think it is my 12v battery? my Scangauge 2 still show 14.2v; any idea please let me know.

    V/r

    Khoi Nguyen
     
    #1 kknguyen1168, May 23, 2015
  2. JC91006

    JC91006 Senior Member

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    it's not your 12v. do you have the spare fob to try?
     
    #2 JC91006, May 23, 2015
  3. kknguyen1168

    kknguyen1168 Member

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    Yes I did, tried spare one too, same thing.
     
    #3 kknguyen1168, May 23, 2015
  4. JC91006

    JC91006 Senior Member

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    I don't know the range of the fobs, I usually only use SKS to enter and lock the car. Seems odd both fobs do the same.
     
    #4 JC91006, May 23, 2015
  5. kknguyen1168

    kknguyen1168 Member

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    I usually use the FOB lock my car from my garage, I can not do that anymore with both FOB. Please try your should be work with 50ft.
     
    #5 kknguyen1168, May 23, 2015
  6. JC91006

    JC91006 Senior Member

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    try it outside your garage
     
    #6 JC91006, May 23, 2015
  7. kknguyen1168

    kknguyen1168 Member

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    did that too
     
    #7 kknguyen1168, May 23, 2015
  8. JC91006

    JC91006 Senior Member

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    what's your 12v measure? it shouldn't be 14.2v if it's off.
     
    #8 JC91006, May 23, 2015
  9. kknguyen1168

    kknguyen1168 Member

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    from Scangauge 2; why do you think if off?
     
    #9 kknguyen1168, May 23, 2015
  10. JC91006

    JC91006 Senior Member

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    a new 12v should measure 12.8 or higher. seeing you have 2010, it probably would be weaker, closer to 12v. If it's less, then you should replace it since it's 5 years old.

    but I still can't imagine that causing the issue.
     
    #10 JC91006, May 23, 2015
  11. kknguyen1168

    kknguyen1168 Member

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    That what I want to find out, I had Scangauge2 connected to ODB2 for last 4 years, always keep my eyes to it, but Scangauge2 indicate 14.2v, how do you find out your battery is going bad?
     
    #11 kknguyen1168, May 23, 2015
  12. JC91006

    JC91006 Senior Member

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    Since your battery is 5 years old, just assume it's bad and buy another one. It's not going to last that much longer.
     
    #12 JC91006, May 23, 2015
  13. kknguyen1168

    kknguyen1168 Member

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    Well, Just went to Auto part to check the battery, the battery still check out good. What do you think next.?
     
    #13 kknguyen1168, May 23, 2015
  14. JC91006

    JC91006 Senior Member

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    Did you replace the batteries in both your fobs? If yes, the batteries might not be good
     
    #14 JC91006, May 23, 2015
  15. kknguyen1168

    kknguyen1168 Member

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    Well, I thought the same thing, went out and buy a new one, cost me 4.99 form Target CR1632, guess what? no different. please keep it coming.
     
    #15 kknguyen1168, May 23, 2015
  16. JC91006

    JC91006 Senior Member

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    The car receiving unit/antenna for the fob. But since it works and the range is shorter, you would have to somehow disturb that. And I don't know where that's located
     
    #16 JC91006, May 23, 2015
  17. xliderider

    xliderider Senior Member

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    That 14.2v your scangauge is measuring isn't the battery voltage, it's the operating voltage when the traction battery is online and supplying current to the 12v auxiliary battery.
     
    #17 xliderider, May 23, 2015
  18. kknguyen1168

    kknguyen1168 Member

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    ok, do you know where can I tell my battery volt when I look at my scangauge?
     
    #18 kknguyen1168, May 23, 2015
  19. CR94

    CR94 Senior Member

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    Press the bottom right button on the ScanGauge when the car has been shut down with everything off for a few hours. Enter through the right door so you won't start the brake pump doing its thing by entering the driver's door.
     
    #19 CR94, May 23, 2015
  20. kknguyen1168

    kknguyen1168 Member

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    It had been almost 4 hours, just did what you recommend and the Scangauge showed 12.2V, is that good?
     
    #20 kknguyen1168, May 23, 2015
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