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Problem after replacing the battery in the key (SKS)

Discussion in 'Gen 2 Prius Main Forum' started by protate, May 5, 2021.

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  1. protate

    protate Junior Member

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    I replaced the battery in the key with SKS.
    After replacement, the buttons on the key works (open and close doors), but the buttons on door handle in the car do not work and to start the car, the key must be in the gap.

    Does this mean that the smart function in the key is deprogrammed? Is it even possible?
    I don't have the second key. What can I do now?
     
    #1 protate, May 5, 2021
  2. protate

    protate Junior Member

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    I use cheap battery "no name". After replacing with duracel everythig works fine.
    It was strange that the buttons on the remote worked and the SKS did not work.
     
    #2 protate, May 5, 2021
    bisco likes this.
  3. bisco

    bisco cookie crumbler

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    very odd. i'm glad it worked out though!(y)
     
    #3 bisco, May 5, 2021
  4. dolj

    dolj Senior Member

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    Probably the voltage thresholds for each system. The fob becomes unreliable from 2.9 V and considering a good quality new battery is 3.3 V, that doesn't allow for a lot of wiggle room.
     
    #4 dolj, May 17, 2021
    protate likes this.
  5. sam spade 2

    sam spade 2 Senior Member

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    IF......you intend to keep this car very long, you NEED to get a second FOB programmed.
    If you lose the only one or it goes bad, the fix can be VERY expensive.
     
    #5 sam spade 2, May 17, 2021
  6. protate

    protate Junior Member

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    At Toyota Dealership programming costs a fortune. I am looking for a brand new key to use in "chicken dance", but I don't find them anywhere on the internet. Do you have any suggestions where to buy it?
     
    #6 protate, May 20, 2021
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