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Thread: Key Fob not Unlocking

  1. #1
    Join Date
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    Key Fob not Unlocking

    Yesterday I posted about battery drain issues & the fact that the car failed to start, so battery voltage would have dropped very low.
    Today I found that the key fob will lock the doors but won't unlock them, the rear hatch unlocks, fortunately, as I didn't know about the concealed key lock.
    Would the low voltage have caused an issue with the remote locking/unlocking?
    Thanks.

  2. #2
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    Yes can do as not enough juice to activate unlocking. Had it happen to me from low battery Could also be a flat battery in the remote Easy to change Youtube will show you how
    2021 Kamiq LE 110 , Moon White, BV cameras F & B
    Mamba Ebike to replace Tiguan

  3. #3
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    Quote Originally Posted by Hillbilly View Post
    Yes can do as not enough juice to activate unlocking. Had it happen to me from low battery Could also be a flat battery in the remote Easy to change Youtube will show you how
    Sorry, I should have said that I charged the battery & had driven the vehicle about 15kms, also after noticing the unlocking problem I changed the key fob battery as well. It locks ok, also will unlock the tail gate, but won't unlock the doors.

  4. #4
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    If I'm not mistaken, then all keys need to be reinitialised. I believe there might be a thread here somewhere on how to do this.

  5. #5
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    Have had about 4 flat battery occurrances and never had to do anything to the keys Both still work once battery comes up
    2021 Kamiq LE 110 , Moon White, BV cameras F & B
    Mamba Ebike to replace Tiguan

  6. #6
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    I have it in the back of my mind that once you use the key in the door lock, the key fob will not function correctly. Which is why I believe the key fob needs to be reinitialised (I could be wrong)

  7. #7
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    I've been using key in the door lock at least weekly for over 6 years, no issue ('surf key'). I believe there would be an issue if i tried to use the 'surf key' in the ignition, which would need for the key to be reinitialized. Maybe that's what you were thinking of, Johnny?
    Current: MY18 TRANSPORTER CrewVan, Indium Grey
    Previous: MY10 Tiguan 2.0TSI, Silver Leaf, APR StgII tune + many mod's

  8. #8
    Join Date
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    Try locking and unlocking the driver's door manually with the key, then insert into ignition to ACC and off again. The remote part may work again after that.
    MK4 GTI - Sold
    MK5 Jetta Turbo - Sold
    MK5 Jetta 2.Slow - Until it dies.

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