1996 E36 318Ti Central Locking key fob ?

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  1. 1996 E36 318Ti Central Locking key fob ? 
    #1
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    The key fobs for my car ('96 318ti) both have little or zero battery power. The main (small) one works, but only a few feet from the car, so not great. Also, the crappy plastic loop for attaching it to a keyring is snapped through.

    So, my question is this:

    While it's being pulled apart to fit a new battery, what are the chances of getting it completely re-housed in a new case? Does anyone know anywhere that would do this or any rough idea of cost?
     
     

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    Any good? http://www.realoem.com/bmw/showparts...55&hg=41&fg=40.

    Which looks like yours?
     
     

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    Quote Originally Posted by GordonJ View Post
    The key fobs for my car ('96 318ti) both have little or zero battery power. The main (small) one works, but only a few feet from the car, so not great. Also, the crappy plastic loop for attaching it to a keyring is snapped through.

    So, my question is this:

    While it's being pulled apart to fit a new battery, what are the chances of getting it completely re-housed in a new case? Does anyone know anywhere that would do this or any rough idea of cost?
    hi Gordon

    This would be a pretty easy job to be honest.

    Ive dismantled a few past BM keyfobs and the innards can be removed (often you need micro screwdrivers)

    Have you got a picture of your keyfob?

    I would think that a local electronics repair shop would be teh best place to take it if your not comfortable doing it yourself.

    Either that or if you have a mate who is good at electronics and practical stuff..
     
     

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    Quote Originally Posted by boostist View Post
    hi Gordon

    This would be a pretty easy job to be honest.

    Ive dismantled a few past BM keyfobs and the innards can be removed (often you need micro screwdrivers)

    Have you got a picture of your keyfob?

    I would think that a local electronics repair shop would be teh best place to take it if your not comfortable doing it yourself.

    Either that or if you have a mate who is good at electronics and practical stuff..
    Hi boostist and Ronnie, sorry it's taken me so long to reply to your help. Life getting in the way and all that!

    Here's a couple of pictures of the fob in question. I THINK it's a Sigma. What are your thoughts?

    At the BMW dealer, they said something about if the memory or whatever has zero power going to it for a certain amount of time, it would effectively be wiped and need to be reprogrammed to my car. Do you know anything about that?
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    Quote Originally Posted by GordonJ View Post
    Hi boostist and Ronnie, sorry it's taken me so long to reply to your help. Life getting in the way and all that!

    Here's a couple of pictures of the fob in question. I THINK it's a Sigma. What are your thoughts?

    At the BMW dealer, they said something about if the memory or whatever has zero power going to it for a certain amount of time, it would effectively be wiped and need to be reprogrammed to my car. Do you know anything about that?
    Yeah, its not a difficult job at all.

    The memory can be wiped if the battery is removed for more than a few minutes iirc but they are easy enough to re program (guide on here somewhere)

    I would replace the battery first leave it a minute or two so its fully 'juiced' and then swap the innards.

    Ive done it before and didnt have to reprogram the key anyway
     
     

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    Cool, cheers! Any idea where the best place to buy the replacement case would be?
     
     

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    The fob is off a Sigma M series alarm set up,possibly a m30 alarm, there are loads on Fleabay!
     
     

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    Here you go...

    You would need to empty its insides first as it seems new cases are not available.


    Sigma Alarm fob
     
     

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    #9
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    Just bought that, boostist, wish me luck! I slid a scalpel blade into the one I have and it prized apart easily enough, so hopefully shouldn't be too much of a nightmare.
     
     

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    Cheers lads, got the new fob thru from eBay this morning, just swapped the innards over and it's working a treat (and more importantly, hanging from my keys). You were both right, it was a very simple job. The only thing is, you still seem to need to be quite near the car for it to operate. Not as near as before, with the old batteries, but still within 5 or 10 metres or so. That's not right, is it? I'm not too bothered about it, but it would be nice if it worked from a bit further away. Batteries? Or is it just a shit system?

    I even tried the 'hold it against your head' thing, but still no joy.
     
     

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