1995 E36 316i Compact "M43B16" Imobiliser fault.

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Thread: 1995 E36 316i Compact "M43B16" Imobiliser fault.

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  1. 1995 E36 316i Compact "M43B16" Imobiliser fault. 
    #1
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    sandom_sk8's Car Details
    Model of Car:
    316i "M43B16"
    Year of Manufacture:
    1995
    Transmission Type:
    manual
    Car Body Type:
    compact

    Join Date
    Aug 2010
    Location
    Wakefield, England
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    Hi guys
    Im new to this forum but not new to Bmw's nor new to the faults Abused Bmw's come with but upto now ive never had one take the p*** so much.
    3 week ago this friday i tackled the task of replacing my front control arms and bushes along with roll bar bushes and links.
    after completion i rewarded myself with a little country road drive to check what improvement PU bushes and fresh ball joints had to offer and to say the least i was chuffed with my work.

    Until, i decided to pull over for a minute and turn the engine off.
    Did my business and when i came back my key unlocked the car fine lit up the dash but would not merely turn over the engine let alone start.
    After lots of time spent checking the battery, relays, Dme, and even bought 2x new keys from the dealer ive come to the conclusion the ews system is at fault.

    I have replaced the Ews unit with an exact matching one and still not luck.
    I also found a guide on some forums suggesting snipping 3 wire and soldering 2 of em together, Which allowed my starter to work but it just cranks and cranks.


    So i am here to ask for help.

    Please use Pm with any info.


    and also does anyboy know why my apline headunit turns itself off once you hit a certain volume? it did this with my new and old battery but never did it in my previous car so im assuming its car related.
    thanks
     
     

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    #2
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    TheEnd's Car Details
    Model of Car:
    540
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    1998
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    You'll have to undo most of the work you've done so far.
    The EWS module is looking for a code in the ECU which it has been paired to. The new EWS module won't be paired, so that will always stop things unless it's changed back.

    The cutting of wires might have jumped the starter motor lock-out, but without the correct code, the ECU won't fire the injectors or plugs.
     
     

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    #3
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    sandom_sk8's Car Details
    Model of Car:
    316i "M43B16"
    Year of Manufacture:
    1995
    Transmission Type:
    manual
    Car Body Type:
    compact

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    Wakefield, England
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    Ah right, i havent made much mess luckily so wont take 5 mins to sort out.
    so the only real way to get my car working is through the dealership?
    thanks
     
     

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    #4
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    TheEnd's Car Details
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    You haven't binned the old EWS box have you? in that case, yea, it's close to that.

    Good diagnostic kits can re-align the EWS to an ECU, but that EWS won't be paired to any of the keys you have.

    The keys first off swap a few lines of code to make sure they are the right keys, then once happy, the EWS checks it has the right ECU, then starts.

    with the other EWS box, the keys will fail the electronic interrogation, and the ecu won't match what it was paired with, so even aligning the replacement EWS box with the ECU would need the keys that came from the same car the EWS was from.

    Oh yea- and the stereo - check your wiring, you most likely have a short circuit on some of the wires, when the power gets turned up, it trips the self protection.
     
     

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    #5
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    sandom_sk8's Car Details
    Model of Car:
    316i "M43B16"
    Year of Manufacture:
    1995
    Transmission Type:
    manual
    Car Body Type:
    compact

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    No i kept the old one, its currently plugged in (with the deffective wiring).
    The replacement i got off ebay with the exact same codes on it as mine so i assumed the module/relay wasnt coded and it was just the Ecu :S my wrong.
    decent diagnostics kit? any suggestions?

    Checked wiring 3 times, looks pretty good.
     
     

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    #6
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    sandom_sk8's Car Details
    Model of Car:
    316i "M43B16"
    Year of Manufacture:
    1995
    Transmission Type:
    manual
    Car Body Type:
    compact

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    http://cgi.ebay.co.uk/ECU-REMAP-CHIP...item27b38963e2
    Would this work? or is it bull****
     
     

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    #7
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    sandom_sk8's Car Details
    Model of Car:
    316i "M43B16"
    Year of Manufacture:
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    Transmission Type:
    manual
    Car Body Type:
    compact

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    actualy dont think it supports my ecu, shoulda looked..!
     
     

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    #8
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    yea, that's not for diagnostics,

    With your old one in, it should be paired anyway, so you shouldn't need to be re-pairing them.

    What it does need is putting back to how it was when it broke down, then have the fault codes read, cleared, then read again to see what the existing problems are.
     
     

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    #9
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    sandom_sk8's Car Details
    Model of Car:
    316i "M43B16"
    Year of Manufacture:
    1995
    Transmission Type:
    manual
    Car Body Type:
    compact

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    Any decent diagnostic kits recomended?
    thanks
     
     

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    #10
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    TheEnd's Car Details
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    there is a carsoft kit about, that's pretty cheap, and claims to realign EWS if needed, and also a code reader from peake which is pretty good.

    Peake won't do ews alignment, but you shouldn't need to be doing that anyway.
     
     

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