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Smg cranks but no start

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  • Rod.bearings
    replied
    Originally posted by Arith2 View Post
    Post a picture of the Control Unit Tree. Is this an actual ISTA computer or your personal rip from somewhere?
    I have all the bmw tools from bimmer geeks on personal laptop.

    illl take a pic tomorrow but the Kombi and dme ones were yellow.

    I also tried flashing to manual via ecuworkx but doesn’t seem to work

    Leave a comment:


  • oceansize
    replied
    The SMG pump motor continuously runs as in never shuts off? If so that would mean it can’t build the required pressure so either seals, motor, accumulator, or pressure sensor is bad. No pressure no shifts. You should be able to monitor pressure from INPA.

    Leave a comment:


  • Arith2
    replied
    Post a picture of the Control Unit Tree. Is this an actual ISTA computer or your personal rip from somewhere?

    Leave a comment:


  • Rod.bearings
    started a topic Smg cranks but no start

    Smg cranks but no start

    Hi guys, bought a e46 m3 smg that doesn’t start. I am planning to manual swap it but another issue popped up. When I bought, it doesn’t crank at all and the coolant temperature gauge is max red when in ignition.
    I was able to get it to crank by coding out the clutch safety. I tried testing but no spark or fuel, since temp gauge is all the way red I assume there’s no communication to the dme? I tried flashing with winkfp and it’s successful but nothing changes. It also connects to inpa and ista fine. Currently I removed the smg module. I scanned the codes, any help?

    edit - I am trying to just start the car so I can proceed with manual swapping. Currently the smg pump just keeps priming and the shifter won’t move (stuck in neutral)


    Last edited by Rod.bearings; 04-13-2022, 06:17 PM.
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