2000 525iSE e39 Ignition System Dead - Help

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  1. 2000 525iSE e39 Ignition System Dead - Help 
    #1
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    Three times in the last 4 years I have turned the ignition key only to find ignition system totally dead - no lights on dashboard (but central locking and car lights all fine). After several attempts to start with no success - suddenly the electrics return and dashboard indicators lights and all is normal - but only for a day or two when the fault reoccurs.

    BMW garage can find no fault but have replaced ignition switch 3 times in total - after which all has been perfect again for anything from 9 months to 2/3 years.

    Anyone got any ideas, please because I am having to pay. BMW Service say they cannot replace ignition switch under warranty as they have found no fault but replacing it seems to fix the fault but not permanently!

    They ask if I have heavy bunch of keys (which I don't). Why could new ignition switch fix problem for a year or two?

    Appreciate any ideas as I never know when it will reoccur
     
     

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    This could be a problem with your EWS. Did the garage not find any faults with it?
     
     

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    #3
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    NealP - many thanks for suggestion. Possibly could be EWS but BMW garage can find no fault or fault logged using all their diagnostic equipment including looking at all knowledge bases and asking amongst their experts (whoever they are). I could understand if it was an intermittant fault but I just can't understand how replacing ignition switch fixes problem for 1-2 years (last one fitted last Saturday morning and car perfect again)
     
     

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    Possible faulty batch of ignition switches/barrels
     
     

  7. Faulty Batch of Ignition Switches? 
    #5
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    Really appreciate you responding so quickly Neal. Would they be using the same batch of ignition switches in 2009 as 2005 when fault first occured? Telgas
     
     

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    Well, the parts could be shelved after manufacture and used now. What else have you done to the car since?
     
     

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    Nothing else has been done to the car, which I have had since new and it has only done 60,000 miles and has been serviced regularly by the original BMW dealership. No other problems with it other than this "dead ignition" fault occuring 3 times during the last 4 years. Maybe I will have to wait until it totally fails to recover, when it may be clear what is causing the problem?
     
     

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    It will be perfect time to read the codes then
     
     

  11. Thanks Neal 
    #9
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    I really appreciate your feedback and support. Many thanks indeed. Terry
     
     

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    #10
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    When you turn the ignition do you hear the fuel pump prime? Very brief buzz that can be heard behind drivers seat under the rear bench seat.

    Also check the ECU, Gildersol had a problem that immobilised his sons car IIRC and it turned out that the ECU had become waterlogged
     
     

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