2014 Prius Smart Key Proximity Access stopped working

Discussion in 'Prius v Care, Maintenance and Troubleshooting' started by skydivetoday, Dec 22, 2018.

  1. skydivetoday

    skydivetoday Junior Member

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    Hello prius owners,

    I just got my first used prius v and may be missing something. The proximity access worked for a week and then stopped. I have tried the sks button under the dash and the smart key option on in the setup.
    The battery is at 3v and the unlock, lock and engine on/off works fine.
    I have also tried the other fob.

    Any ideas?
     
  2. skydivetoday

    skydivetoday Junior Member

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    Anybody know how Smart Key Proximity Access works or what to check?
    Any links or diagrams?
     
  3. bisco

    bisco cookie crumbler

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    battery should be 3.3 volts. if that doesn't fix it, test the 12v health
     
  4. skydivetoday

    skydivetoday Junior Member

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    Thanks Bisco,
    Will replace and report- it now makes sense to me except I thought the batt were rated at 3v.


    Later,
    The new battery is 3.1 and no effect on problem. The 12v reads 12.2v standing and charge 14.6v.
     
    bisco likes this.
  5. bisco

    bisco cookie crumbler

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    12.2 is low, but it depends on the voltage drop with load. turn the headlights on with car off and watch the voltage drop over a few minutes.
     
  6. bisco

    bisco cookie crumbler

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    has any work been done on the car? accidents? are you original owner?

    sks has antennae that pick up the fob signal and proximity sensors.
     
  7. skydivetoday

    skydivetoday Junior Member

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    No work or accident. I bought the car with 33000 mile from first owner after dealership prepurchace check two weeks ago.
    The 12v goes to 11.7 after two minutes of lights on and then starts and runs fine.

    New information: when locked the red light on fob does not start flashing as I walk closer.
     
  8. skydivetoday

    skydivetoday Junior Member

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    Found the Problem!

    I tried techstream and found that the car has three smart key not just my two. I looked under and over everything and found a third smart key stuck under the driver seat. Solved!! I can know go on with my life.

    Thanks for helping me think this out.
     
  9. Tim Jones

    Tim Jones Senior Member

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  10. Tim Jones

    Tim Jones Senior Member

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    Great Post..... Thanks.
     
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