2002 E46 325i BAD ALARM

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  1. 2002 E46 325i BAD ALARM 
    #1
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    fredchopin's Car Details
    Model of Car:
    325i
    Year of Manufacture:
    2002
    Transmission Type:
    Manual
    Car Body Type:
    Saloon

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    I bought the car about 8 months ago. In August the alarm went off at random times (the alarm is 8 x 30 secs of annoying siren) eg, opening the boot, putting key in ignition and starting engine, even coming on whilst driving after driving for an hour or so. At that time I could deactivate by switching engine off, removing key, remote lock then unlock (3 button fob).

    Problem then went away for a couple of months, but has come back now. I now cannot deacivate using method above, but have to wait for 8x30sec.

    Any ideas please, or how can I disable now before I get it repaired?

    Thanks in advance
    Fred
     
     

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    Good thing about the EWSIII fitted to you car Fred, is that you can read fault codes from it. So I would get diagnostics carried out to find out what the EWS module is bringing the fault up as . In this case, I wouldn't have thought it would be the bonnet switch
     
     

  4. The Following User Says Thank You to xXNealXx For This Useful Post:

    fredchopin (13-10-2009)

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    #3
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    fredchopin's Car Details
    Model of Car:
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    Saloon

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    Hi NealP
    Thanks very much. Can you recommend a decent auto electrician or must I get this looked at by a dealer? I am reluctant to try to disengage module as presumably the car will not then start?
    regards
    Fred
     
     

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    That's right Fred, it won't start if you disconnect the EWS. You need to find a specialist that has GT1/DIS diagnostic gear. Ring around or have a look at the recommended garages here...http://www.bimmerforums.co.uk/forum/...county-t18129/
     
     

  8. The Following User Says Thank You to xXNealXx For This Useful Post:

    fredchopin (13-10-2009)

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    #5
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    fredchopin's Car Details
    Model of Car:
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    Year of Manufacture:
    2002
    Transmission Type:
    Manual
    Car Body Type:
    Saloon

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    Hi NealP

    Thanks again.
    Regards
    Fred
     
     

  10. E46 Bad alarm 
    #6
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    fredchopin's Car Details
    Model of Car:
    325i
    Year of Manufacture:
    2002
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    Hi All
    It may interest you on the outcome of the above. I could not find a local auto electrician so had to go to a dealer. Diagnostic tests were done, but could not find any fault codes. Replaced the siren (in retrospect I do not know why I allowed them to do this- itwas that the siren was only working too well!). Worked ok for 3 days , then exactly the same problem.£75 for siren

    I got angry with the dealer-retested with again no problems, so repaced the module (£232) and now works fine.

    It's not always a fault code problem, and had I looked at earlier articles on the central locking I might have had a go at resoldering myself- is the EWS capable of repair by any of the guys mentioned?
    Fred
     
     

  11.  
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    Quote Originally Posted by fredchopin View Post
    Hi All
    It may interest you on the outcome of the above. I could not find a local auto electrician so had to go to a dealer. Diagnostic tests were done, but could not find any fault codes. Replaced the siren (in retrospect I do not know why I allowed them to do this- itwas that the siren was only working too well!). Worked ok for 3 days , then exactly the same problem.£75 for siren

    I got angry with the dealer-retested with again no problems, so repaced the module (£232) and now works fine.

    It's not always a fault code problem, and had I looked at earlier articles on the central locking I might have had a go at resoldering myself- is the EWS capable of repair by any of the guys mentioned?
    Fred
    The EWS module is not that simple to repair Fred. It talks to the ECU with rolling code to compare in the table held by the ECU. No relays or such to repair like the general module.
     
     

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    #8
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    fredchopin's Car Details
    Model of Car:
    325i
    Year of Manufacture:
    2002
    Transmission Type:
    Manual
    Car Body Type:
    Saloon

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    OK thanks very much Neal- I am clearly a little behind the times!
    Fred
     
     

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