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+--- Thread: [Remote help needed] F44 after BDC replacement. MGU in component protection mode. (/showthread.php?tid=9447)
[Remote help needed] F44 after BDC replacement. MGU in component protection mode. - Ku3aszek - 12-26-2025
Hello everyone!
I hope that your Christmas went well and you speed quality time with your families.
I need help with F44 from 2020. Car came from another shop after BDC replacement (brand new from BMW with keys programmed to it). I programmed it and coded with E-Sys, wrote SVT, FA and I-Steps from VCM Backup. I also have backup made with E-Sys Ultra from this car (made it in January while doing some other coding in this car).
After programming and coding BDC MGU started to work, I could release parking brake but the engine would't start, KAFAS lost FSC, and MGU (ID7) is in Component Protection mode. Additionally car couldn't communicate with EPS and I saw error about FlexRay not being initiaized.
Then I tried to do FlexRay Initialization with ISTA but it failed and there is no communication with DME, EGS, EPS etc.
I tried to use Tool32 to check and open FlexRay ports but I can't do it. I can connect to ZGW via Tool32, read and erase codes but "steuern_reset_learn_flexray" doesn't work. I cannot read status of FlexRay ports either.
Looking for someone who can help remotely, I have ENET and 100A PSU so voltage drops won't be a problem.
RE: [Remote help needed] F44 FlexRay initialization problem - Stratofortress - 12-28-2025
Sometimes vehicle integration level update and couple of hours sleep revives the Flexray. At present the BDC has been replaced, thus an I-Level mismatch likely exist.
RE: [Remote help needed] F44 after BDC replacment. MGU in Component protection mode - Ku3aszek - 12-28-2025
(12-28-2025, 10:06 PM)Stratofortress Wrote: Sometimes vehicle integration level update and couple of hours sleep revives the Flexray. At present the BDC has been replaced, thus an I-Level mismatch likely exist.
Thank you for reply. I disconnected battery for 30 minutes and i have connection with all the modules.
But now i need to unlock MGU (it is in Component protection mode), and update FSCs in MGU and KAFAS. I am not sure how to turn off component protection mode in MGU. From what I understand I will need some additional FSC to do it. Is that right? I have backup of FSCs from this car so KAFAS shouldn't be a problem but I don't know what to do with MGU.
RE: [Remote help needed] F44 after BDC replacement. MGU in component protection mode. - Stratofortress - 12-29-2025
Understand. Component protection can also be removed remotely if MGU is original. Otherwise you will need 1AA FSC with correct upgrade index provided by BMW Group. You may use Tool32 for HU_REFURBISH_VIN & HU_REFURBISH_VIN_UI, where the latter tells you what the last 4 digits should be for the 1AA FSC, and former what the VIN should be for the 1AA FSC.
RE: [Remote help needed] F44 after BDC replacement. MGU in component protection mode. - Ku3aszek - 12-29-2025
(12-29-2025, 02:28 PM)Stratofortress Wrote: Persistent component protection can be removed remotely if MGU is original.
Yes, MGU is original. Only the BDC was replaced, can you help me?
RE: [Remote help needed] F44 after BDC replacement. MGU in component protection mode. - Stratofortress - 12-29-2025
The 1AA comes automatically in FSC repair kit if there is also BDC replacement order.