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Thread: Draining DEF tank F25 X3d

  1. #1
    Join Date
    Mar 2020
    Location
    Merritt Island
    Posts
    4
    My Cars
    2015 X3d

    Draining DEF tank F25 X3d

    Are there drain tubes on the bottom of the SCR tanks?

  2. #2
    Join Date
    Jul 2011
    Location
    Arlington, VA
    Posts
    9,931
    My Cars
    2018 BMW M240i
    First, what’s a DEF tank? Second, go to www.newtis.info and enter the last 7 characters of the car’s vehicle identification number. Hit enter and bookmark the page. Then go to www.realoem.com and repeat the same steps. In realoem find the DEF tank. Note the first 4 numbers of the part #. The first 2 numbers indicate the system while, if I remember correctly, the second 2 numbers indicate the subsystem. Then go back to newtis and dig down first to the system and then the subsystem. That’ll give you info on the DEF tank maintenance and repair.

  3. #3
    Join Date
    Jan 2016
    Location
    Ca
    Posts
    6,981
    My Cars
    2001 525it
    Ya know adblue, diesel exhaust fluid, def and why do you need to drain the tank

  4. #4
    Join Date
    Mar 2020
    Location
    Merritt Island
    Posts
    4
    My Cars
    2015 X3d
    I have a problem with the DEF level sensor as do many others and I wanted to put in deionized water to dissolve the crystalization.

    - - - Updated - - -

    Thanks so much. I have the error code for erratic level sensor.

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