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Thread: Issue with convertible rooftop on my E88

  1. #1
    Join Date
    Oct 2018
    Location
    Cyprus
    Posts
    13
    My Cars
    e88 118i

    Issue with convertible rooftop on my E88

    Hi bimmers,

    I guess i’m not the only one facing this problem but i can’t find any details on my issue.
    specifically, many times my convertible rooftop stalls during open / close operations. No cracking / whining sounds, it just feels like the hydraulics don’t have enough power to open or close the rooftop.

    i got a foxwell NT510 tool and to my surprise i actually got some related errors, but again, not much detail online. Any tips from the experts?

    A688/not present - CVM: Fault incoding data
    A689/not present - CVM: Hall sensor, roll bar unclamped
    A68D/not present - CVM: Hall sensor, roll bar set up

    i have reset the codes only yesterday, and errors reappeared almost instantly, without the attempt of opening / closing the rooftop

  2. #2
    Join Date
    Oct 2018
    Location
    Cyprus
    Posts
    13
    My Cars
    e88 118i
    Any hints where i could perhaps find more details on the codes?

  3. #3
    Join Date
    Jun 2017
    Location
    DC
    Posts
    3
    My Cars
    2008 135i Convertible
    My E88 top will no longer go down. The windshield locks will rotate/unlock but the top does not fold. The windows all properly go down.

    I tried using INPA to look for faults but there is no Convertible Top Module (CVM or CTM) listed under chassis or body. Any idea how I can check the CVM or run a diagnostic?

  4. #4
    Join Date
    Jan 2016
    Location
    Ca
    Posts
    6,981
    My Cars
    2001 525it
    I would look in to the hall sensors the top needs to see that switches are working correctly or it will not work

  5. #5
    Join Date
    Oct 2019
    Location
    Lynnwood, WA
    Posts
    4
    My Cars
    N54 135i E88
    bump did this ever get resolved? having same issue

  6. #6
    Join Date
    Oct 2018
    Location
    Cyprus
    Posts
    13
    My Cars
    e88 118i

    Have you managed to resolve?

    Quote Originally Posted by viacob View Post
    bump did this ever get resolved? having same issue
    Did you actually managed to resolve?

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