1995 E36 m3 immobiliser/ews problem - Page 2

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Thread: 1995 E36 m3 immobiliser/ews problem

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    #11
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    stu21t's Car Details
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    No worries mate, im kinda clutchin at straws anyway thats y i posted.
    I guess ill get a new key and go from there.
    Just didnt wanna buy 1 to find its not that. Still like u say ill end up with a spare, i might aswell get a new alarm remote while im at it. Ive had the car 8yrs with only 1 key lol.
    Thanks for trying, ill let u know how i get on.
     
     

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    #12
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    Just had a similar problem on a '96 518, though intermittenti. I tried all sorts to fix it with no luck.

    Last ditch attempt was to change 2 fuses that looked perfectly OK, and hey presto, problem solved. All I can think is that they had condensation in the fuses. If yours has been stood outside over winter, it might be worth changing fuses even if they look OK just to see what happens.

    One other thought. If the alarm is the serpi star 3g, then this would have been installed post build and the wiriong for the alarm will have been spliced into the loom at the power distribution box under the back seat. The wires should have been soldered and taped. Might be worth checking those splices are still OK.
     
     

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    #13
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    Quote Originally Posted by richardmlees View Post
    One other thought. If the alarm is the serpi star 3g, then this would have been installed post build and the wiriong for the alarm will have been spliced into the loom at the power distribution box under the back seat. The wires should have been soldered and taped. Might be worth checking those splices are still OK.
    Have you read my guide Richard?

    http://www.bimmerforums.co.uk/forum/...3g-ews-t39173/

    The alarm module is behind the dash on the E36, Under the rear seat on the E34.
     
     

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    #14
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    i had a play with the car again last night.

    i found the ews box and checked i had power at it from the fuse, which i do, and the earth is ok.
    when i turn the key to p3(cranking to start) i get a live into the ews box from the key, but no live out to the starter or to the dme.
    also i dont get any sort of signal from the reciever.
    does this sound like the key is at fault?
    the dme fuse is ok, and when i turn the ign on i get a very faint buzzing in the engein bay area, if i unplug the ecu or the relay the buzzing stopps, so its obviously doing something. but theres no signal from the ews to tell it to power up properly.

    i think its the key but just want some1 more in the know to say what they think.

    cheers
     
     

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    #15
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    Quote Originally Posted by billywhizz1984 View Post
    Have you read my guide Richard?

    http://www.bimmerforums.co.uk/forum/...3g-ews-t39173/

    The alarm module is behind the dash on the E36, Under the rear seat on the E34.
    Decent guide that one Billy. Might have been more useful to me had I seen it last week, but hey ho

    I'm sure that my alarm module under my back seat looks diffferent to any of the pictures in your post though. I'll try to take a photo later and send over so you can add it to your set if you want.
     
     

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    billywhizz1984 (11-01-2011)

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    #16
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    billy, ive just been messing about again lol

    ive taken an ews unit out of another car, (my dads, another e36, 3.0 m3 95 with the same alarm) the ews box had the same part number on it, i tried that in my car with my key, didnt work,
    tried his ews and his key held next to mine (mine in the barrel to turn, his next to it for the chip to be read) didnt work,
    then tried his transponder ring from around his ign key, his ews bux, but my key in the barrel again, still didnt work.

    do i need to take any other bits off his car for his chip to run my car?
    such as the little black box (transmitter module) the transponder ring plugs into?

    or any other way you can think of fault finding my car with his spare parts?
    cheers
     
     

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    #17
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    The EWS unit is coded to the DME so swapping them over won't work, unless you swap the DME too.

    There's not much else I can suggest other than getting a really good independant with the BMW coding software to have a look at it.
     
     

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    #18
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    ill swap the dme with it if it will help eliminate what could be causing the problem.

    if i take the ews and dme out of my dads car and plug them in mine should it fire up then?
    what about the key?
    will i need my key in the barrel but his key next to the transponder ring for the chip?
     
     

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    #19
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    Quote Originally Posted by stu21t View Post
    if i take the ews and dme out of my dads car and plug them in mine should it fire up then?

    what about the key? will i need my key in the barrel but his key next to the transponder ring for the chip?
    1) Assuming it is an immobiliser problem only then yes.

    2) Yes, You will need your Dads key in near proximity so the induction ring picks it up.
     
     

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    #20
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    You might want to remove the chip from your own key, swap the ECU and EWS box.

    If it is that, I can make you an EWS-off chip.
     
     

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