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Thread: 2004 330CI top will not go down

  1. #1
    Join Date
    May 2020
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    2004 BMW 330Ci

    2004 330CI top will not go down

    I have a 04 330CI with a soft top. The top light on the dash stays illuminated and the top will not go down. I did some troubleshooting and checked all of the related fuses to no avail. Any ideas?

  2. #2
    Join Date
    Jan 2015
    Location
    Timaru, New Zealand
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    Two Z3 Roadsters
    You need to set yourself up with a good BMW scanner so you can read the trouble codes and monitor the operation of the top.

    Here are a couple of suggestions:
    - Foxwell NT530 with BMW software installed. Buy only from a reputable supplier as the Chinese knock off's on E-bay don't work. http://www.foxwelltool.com/wholesale...installed.html

    - INPA set up on an old laptop with the special cable https://www.bimmerforums.com/forum/s...xperimentation
    1999 2.8L Z3 Roadster,
    2000 3.0L Z3 Roadster,

    There is only one thing more pleasurable than working on a Z3, that's driving it top down on a fine day.

  3. #3
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    May 2020
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    2004 BMW 330Ci
    Ok, so I lost my job due to covid so the scanner will have to wait. Does anybody have any suggestions that I can try now?

  4. #4
    Join Date
    Mar 2016
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    Portland, OR
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    2002 325Ci Cabriolet
    Quote Originally Posted by jeffg1010 View Post
    Ok, so I lost my job due to covid so the scanner will have to wait. Does anybody have any suggestions that I can try now?
    Well, the first thing to check of course is that the luggage compartment is NOT in full mode. Other than that, you really need to know what error codes are stored in the CVM to troubleshoot.

  5. #5
    Join Date
    Jan 2013
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    Pittsburgh, Pa.
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    81
    My Cars
    2001 BMW 330ci

    330ci vert top issue

    Quote Originally Posted by jeffg1010 View Post
    I have a 04 330CI with a soft top. The top light on the dash stays illuminated and the top will not go down. I did some troubleshooting and checked all of the related fuses to no avail. Any ideas?
    open and close your trunk lid. can't explain, but it got mine going again.

  6. #6
    Join Date
    Mar 2016
    Location
    Portland, OR
    Posts
    712
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    2002 325Ci Cabriolet
    Quote Originally Posted by jeffg1010 View Post
    I have a 04 330CI with a soft top. The top light on the dash stays illuminated and the top will not go down.
    Do the windows still drop a little when you try to open the roof?

    There are several things that will prevent the roof from even beginning the opening the procedure and they include: Trunk is open (or the CVM believes it to be). The luggage arm is in FULL mode. Any one window that does not operate will also prevent opening.

  7. #7
    Join Date
    May 2020
    Location
    Mooresville, NC
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    2004 BMW 330Ci
    Reviving this old thread. I went all summer with no convertible top. Due to Covid, my job loss lasted well into late summer and the financial struggle lingered for a bit afterwards.
    The top does nothing when you push the top down button. No windows roll down, no unlock. The red lock comes on and just stays red while you hold the button.

    I finally sprung for the Foxwell code reader and it was delivered today. Here is what I saw... ( I don't really think all of these are top related but just sharing all)


    -Motor Electronics2 DME Fault1
    -Dynamic Stability Control MK60 E5 DSC/DXC - Fault 2
    -Switching centre, centre console LKM - Fault 1
    -Basis Interface Telephone Telefon - Fault 1
    -Airbag ZAE Fault1
    -Rollover Sensor UEB - Fault 1
    -Convertible top module CVM Fault 2


    -This was a lot more than I thought I'd see!!
    Can anyone help decipher?

  8. #8
    Join Date
    May 2020
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    Mooresville, NC
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    2004 BMW 330Ci
    Anyone?

  9. #9
    Join Date
    Jan 2015
    Location
    Timaru, New Zealand
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    Two Z3 Roadsters
    When you have that list on the scanner. Highlight the module you want to look into and push the "enter" button. The scanner will show you the list of codes for that module.

    Post the code number and description and we'll help.
    1999 2.8L Z3 Roadster,
    2000 3.0L Z3 Roadster,

    There is only one thing more pleasurable than working on a Z3, that's driving it top down on a fine day.

  10. #10
    Join Date
    Jan 2016
    Location
    Ca
    Posts
    6,981
    My Cars
    2001 525it
    Check the wiring harness that runs long the left side, delivers side of the top it brings power to the latches, it can break over time.

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