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Thread: E39 M5 Suspected EWS Problem

  1. #1
    Join Date
    Jun 2013
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    Jersey, UK
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    My Cars
    2002 BMW M5

    E39 M5 Suspected EWS Problem

    Good afternoon,

    Sorry if this is elsewhere, but can't find it.

    I have a 2001 E39 M5, I've had the car for a number of years with little trouble.

    Last weekend, I was using the car and stopped at the shops, came back and was unable to start the car. The starter is engaging and the engine turning but won't fire.

    I plugged the car into the laptop (INPA) and had errors on all 8 coils. An example of one of these errors is at the bottom of this thread.

    The second error I saw (and suspect we could be on to a winner here) is that looking at the EWS, I am getting an error on the ISN that just says ERROR_ECU_REJECTED on both lines. (an image is available here http://up.org.je/ISNError.jpg )

    Have any of you seen anything like this? Would you agree the EWS showing this error is the cause of my non start? I've seen on the internet in places it's possible to flash the DME to remove the EWS requirement - does anyone have any experience of this or should I just pay the dealer for a new EWS and new keys? Would be keen to flash this at home if it's possible and learn something on the way!

    Thanks for helping!
    Rob

    Error Sample

    [COLOR=rgba(0, 0, 0, 0.87)]52 Ignition coil 5[/COLOR]
    [COLOR=rgba(0, 0, 0, 0.87)]Error frequency: 1 Logistic counter: 40[/COLOR]
    [COLOR=rgba(0, 0, 0, 0.87)][/COLOR][COLOR=rgba(0, 0, 0, 0.87)][/COLOR][COLOR=rgba(0, 0, 0, 0.87)]Engine speed 320.00 rpm relative filling 40.00% oil temperature TOG 93.00 degrees C supply voltage HR 11.40 V occurred before (rel. BZ) 0.00 km[/COLOR]
    [COLOR=rgba(0, 0, 0, 0.87)][/COLOR][COLOR=rgba(0, 0, 0, 0.87)][/COLOR][COLOR=rgba(0, 0, 0, 0.87)]Primary circuit errors Static errors currently present[/COLOR]

    - - - Updated - - -

    This is the coil error, as it got messed up before - this was showing on all 8 coils.

    52 Ignition coil 5
    Error frequency: 1 Logistic counter: 40
    Engine speed 320.00 rpm relative filling 40.00% oil temperature TOG 93.00 degrees C supply voltage HR 11.40 V occurred before (rel. BZ) 0.00 km
    Primary circuit errors Static errors currently present
    Attached Images Attached Images

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