[CarlosF11]

If your car has an automatic gearbox, and you program your car with ISTA-D 3.58.1 or higher. Then there is a vacuum sensor must be mounted. See repair instructions REP-REP RAE9011-1166X01 in ISTA-D.

This is only valid for models E8X and E6x with motor code N43 with an automatic gearbox


BMW has updated the software for these cars, off of ISTA P3.58.1 there is a check on brake vaccuum built building.

Thanks for this document, very informative. But as another forum member stated in a previous post it'll be solved in a newer ISTA-P version (3.59.2, although I heard from a BMW mechanic it will be 3.59.3 the soonest). So I hope this retrofit action isn't needed, it's a lot of work. And money I guess.

Also, I think it's ridiculous that after many years of functioning without any real problems BMW decides my car needs extra parts.

[CarlosF11]

Yes this is a software issue according to the BMW bulletin 62720046-02
I will bi solved with 16-07-503 (ISTA/P 3.59.2)
should be available middle-end of july.

do you have WINKFP and some older SP Daten that you can flash back a bit as the "fix" isn't yet available?

Today I updated my E91 N43 with ISTA-P 3.59.2, just available through this website. Only DME was programmed/coded no other changes, but sadly still same problem. Error code 2FD3 - brake vacuum sensor still there. I-level is indeed E89X-16-07-503 now. But 3.59.2 is apparently not the solution for this problem.

Another forum member PM'd me and told me he had the same problem with an E91 N43. He managed to flash DME back to older version, with WinKFP Expert Mode. So that's going to be the next step/try for me. But I'm a little hesitant because of possible bricking the DME unit. I do NOT want to do that.

After reading a PDF with WinKFP Export Mode instructions, I took al preliminary steps in WinKFP Expert Mode. I used the correct 'older' ZB number to start with (7648546) and 57.2 daten, this showed the DME is MSD812. But coming to the final step (just before starting Program) I got this error:
Error 503:
Wrong Program Version
DS: IB, ECU: ID0S

So now I would like know: is this error because of flashing back to older version, or is it something else? I hope someone can help me further with this.

[Patrick11021979]

Go to the dealership... they will mount a brake vacuumsensor on your car.. It's all free, because all n43 engine has to go to the dealer for a recall. This includes mounting a brake vacuumsensor and programming the car to 3.59.2.

[CarlosF11]

Go to the dealership... they will mount a brake vacuumsensor on your car.. It's all free, because all n43 engine has to go to the dealer for a recall. This includes mounting a brake vacuumsensor and programming the car to 3.59.2.

Thanks for your reply. Where do you have this information from, and what country are you in? I'm still waiting for answers from a local BMW mechanic (in The Netherlands). Seems this recall is not current in every country..

Problem is I don't want to inform dealership about my own upgrade to 3.59.2. They don't like that.

[Patrick11021979]

I am from the netherlands... Ista/p 3.59.2 is just released.... I would wait a week and then call them for the recall on your car...

[CarlosF11]

Okay guys,

Long story short:
- there will be a recall for N43 vacuum sensor retrofit but this will be in fases, so it can take some time. Currently no recall for my car sadly;
- today I managed to flash DME back to older version (57.2) with WinKfp Expert Mode, and for now vacuum sensor error is gone!

[djebel650]

Okay guys,

Long story short:
- there will be a recall for N43 vacuum sensor retrofit but this will be in fases, so it can take some time. Currently no recall for my car sadly;
- today I managed to flash DME back to older version (57.2) with WinKfp Expert Mode, and for now vacuum sensor error is gone!

Hi. can you point me as to where to download this software, I have the same issue as u. n43 engine updated and this brake booster sensor fault came out.

[Killer79]

Hey. I am also interested in how it was possible to roll back the firmware back?

[CarlosF11]

Hey. I am also interested in how it was possible to roll back the firmware back?

I described this two messages back...

I reprogrammed the DME with WinKfp (Expert mode), with older SP-daten 57.2.

[Killer79]

I described this two messages back...

I reprogrammed the DME with WinKfp (Expert mode), with older SP-daten 57.2.

and you can describe the process of firmware?
I did so:
1. In the folder c: \ EC-APPS \ NFS \ DATA \ develop and S7621395.0da 7599881A.0pa copied files from the folder c: \ EC-APPS \ NFS \ DATA \ MSD812
2. In the file c: \ EC-APPS \ NFS \ CFGDAT \ COAPI.INI in rows ZBNUMMER = 0000000 and 0000000 SWNUMMER = replaced on ZBNUMMER = 7621398 and SWNUMMER = 7621398
3. WinKFP press the button F2 Expert mode, further F1 PABD - 07MSD812.ipo, F2 P-SGBD - 07MSD812.prg, F3 ECU Address - 12, F5 Program file - 7599881A.0pa, F4 Data file - S7621395.0da
4. Press F8 Done. Firmware burst, but the car will not start, the unit is not determined in Rheingold.
Tell me what I did wrong?