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Thread: key fob won't resync.

  1. #1
    Regular Member vegasbaby's Avatar
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    Default key fob won't resync.

    Hi guys, hopefully someone will be able to sort my key prob........ I would have to get nearer and nearer to the car for the fob to work, so I thought maybe the battery was getting low, so I changed it. I changed it straight away, as I know you only have a set time to do it. I went back out to the car and tried it....nothing. It will let me open the car, and the alarm goes off and I put the key in the ignition and turn so lights are on dash and the alarm keeps going and I have the padlock come on the dash. The only way I can turn it off is if I put a non remote key that I had cut in timpsons in the ignition.
    Not sure what I'm doing wrong, any suggestions would be a appreciated, as I think the Mrs will go nuts if I've got to fork out on a new key, especially after the oven blew up this week, and have had to get a new one :-((. Thanks in advance, Daz

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    Regular Member Mark-R's Avatar
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    You sure that new battery is working ?

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    Regular Member shane31's Avatar
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    Found this if it helps.

    http://www.vectra-c.com/forum/showth...attery-Changed

    Quote Originally Posted by Mark-R View Post
    You sure that new battery is working ?
    I know its weird but put ya tongue on underside of battery it should tingle lol.
    Last edited by shane31; 25th September 2012 at 10:46. Reason: added detail

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    Having a battery in the fob or not shouldn't make any difference to whether the immobiliser works or not. Its only purpose is for the remote central locking.

    Sounds to me like the immobiliser chip has fell out of the fob when you changed the battery. Unusual though because I thought the chip was attached to the PCB and not separate like in the Vec-B fobs.

  5. #5
    Regular Member Mark-R's Avatar
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    Quote Originally Posted by shane31 View Post
    Found this if it helps.

    http://www.vectra-c.com/forum/showth...attery-Changed



    I know its weird but put ya tongue on underside of battery it should tingle lol.
    Wrong battery ive tried it LOL

  6. #6
    Regular Member Mark-R's Avatar
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    Quote Originally Posted by Big Dave View Post
    Having a battery in the fob or not shouldn't make any difference to whether the immobiliser works or not. Its only purpose is for the remote central locking.

    Sounds to me like the immobiliser chip has fell out of the fob when you changed the battery. Unusual though because I thought the chip was attached to the PCB and not separate like in the Vec-B fobs.

    your right the chip is on the board

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    Quote Originally Posted by shane31 View Post
    I know its weird but put ya tongue on underside of battery it should tingle lol.
    Not enough voltage in a CR2032

    Try it with a PP3 instead - the tongue test, not try fitting it in your fob

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    Regular Member vegasbaby's Avatar
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    Quote Originally Posted by vectra ste View Post
    Hi, yeh tried a few 'new' batteries, but hasn't made any difference. I've changed the battery before and didn't have any probs, so now I'm stumped as to what to do next.

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    Hi. I got 2 keys with my VecC recently. One worked fully, the other would only start the car but wouldn't do anything with the remote. The seller assured me that they were the original twin set that came with the car but I was having doubts.
    Anyway having cleaned contacts, changed batteries etc, I resigned myself to the fact that I might eventually need to buy a new key. That was until I bought a certain "tool" from the bay which was supposed to pair new keys as well as other stuff. I ran it, and the keyfob sprang into life again Somewhere along the line, it had become unpaired even though the car would start ok. Anyway, all is well now, so if you know anyone with one of these gadgets, you might want to try that.

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