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Thread: Drivetrain Malfunction 2013 X3 N20

  1. #1
    Join Date
    Oct 2020
    Location
    Upstate NY
    Posts
    3
    My Cars
    2013 X3

    Drivetrain Malfunction 2013 X3 N20

    Greetings,
    I recently took the car to a dealer with drivetrain malfunction. The dealer said I need a new turbo. I installed a remanufactured turbo unit and still have the drivetrain malfunction. The codes that are present are: 120208, 120408 and 12152f.
    The wastegate on the old turbo was in very rough shape and could have been part of the issue. However the reman should have taken care of it. Is there anything else I could be over-looking?
    Thanks in advance!

  2. #2
    Join Date
    Apr 2005
    Location
    Seatle
    Posts
    30
    My Cars
    1996 318i , 2000 M Roadster
    Well, I am in the same boat as you are. 2013 X3 N20 at 52k miles the oil pump failed and got a new timing change etc from BMW. About 10 months ago got a random drivetrain error but car was running fine. 6 weeks ago started it up and had blue smoke so took it in. Diagnosed oil filler line to turbo so replaced it (drivetrain error popped up right before). Drove it for about a day, same error, took it in. They diagnosed vacuum pump and solinoide error so dropped $2,700. Drove it one day, same error. Took it back in. They diagnosed sensors (before and after throttle), replaced. Drove one day same error. Took it in. Had it for a week and now have the two shop foremans involved along with west coast tech. No idea. So, here I am after 6 weeks, four trips to the shop with an unexplained reason for the DTE. 102k miles and they offered 7k as tradein.

    Here I sit with a car throwing a random error with no value to trade in. Figure we may just drive it until it dies.

  3. #3
    Join Date
    Oct 2020
    Location
    Upstate NY
    Posts
    3
    My Cars
    2013 X3
    Let us know the codes you keep getting MMMroadster and any updates. I too will do the same. I'm hopeful that it is an adjustment or maybe a bad sensor. The local dealer for me ( 2.5 hours away ) quoted me 5100 to replace the turbo assy. I purchased a reman turbo and installed it my self.

  4. #4
    Join Date
    Oct 2020
    Location
    Upstate NY
    Posts
    3
    My Cars
    2013 X3
    I think I found the issue. The vacuum line to the wastegate actuator was pinched in its holder on the heat shield. Let the line just hang and the drivetrain malfunction has not come back. I have also purchased bluedriver pro. So I can get realtime fault codes. Will update if anything changes.

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