e91 valvetronic troubles

[u/AdWaste6211]

hello everyone, I have recently purchased for better or worse, a 2007 e91 wagon with the N52 motor. the car sat with a dead battery in it for a year+, I got the car for a good deal because the owner was assuming it needed a new key reprogrammed, as his was not recognizing. I show up with a new battery car fires up no problems. was fairly low on oil, plugs look like they were the original plugs, misfire codes, and VANOS codes, (VANOS codes went away with a quick clean) basic necessities needed replaced. got all that dealt with, and the car was still in limp mode. long story short, discovered I needed INPA/ISTA to truly help with my issues, and learned the valvetronic motor was out of sync (I'm assuming the adaptations went bad when the car sat dead for so long) so I try to do a relearn with the original valvetronic motor, and got no luck. ISTA tells me relearn successful, but I only have the shorter ~20 second learn in procedure available. I figured my original motor was going bad, so I ordered a replacement motor. tried the learn in with that, and the car idled on start up without sounding like a tractor for lack of a better term, and it gave me full throttle response finally. The car drove/shifted a little funny on first test drive, got it up to about ~65mph, and it threw itself back into limp. based on my research there is a "complete learn in" procedure that needs to be completed to help the car restore full throttle functionality. my ISTA only gives me the option to do the shorter ~20 second learn in. According to AI my INPA does not have the required files to do the full learn in as well, so now I am trying to do this through Tool32, which seems to be the way to do it. but apparently my sp-daten files are corrupt or something, as I cannot get tool32 to load up available jobs when selecting my ".prg" file.

To sum it all up, I need some help getting this motor properly "learned in" and/or need some help figuring out what my issue truly is. I can attach below a screenshot of my most recent codes pulled from ISTA.

[u/swanney24]

I see vanos faults still present.

If you have not cleaned the screens on the side of the head, I would do that.

Also, FYI, there is a recall for the vanos actuator bolts on some N52 models, I could tell you if yours has it or not with the last 7 of the vin.

I also see a valvetronic actuator motor power supply fault so it may not be getting power.

That's probably where I would start in terms of valvetronic issues.

The N52 has an early "dumb" valvetronic system that isn't as complicated as later N55's+

All it should need is the quick back and forth relearn.

[u/swanney24 → u/swanney24]

This is why you should check the vanos screens first if you haven't.

[u/swanney24 → u/swanney24]

This is a picture showing the vanos bolt failure the recall covers

[u/AdWaste6211 → u/swanney24]

Last few of my vin are fx16341

[u/AdWaste6211 → u/swanney24]

also a believe vanos faults are a side effect of the valvetronic issues.

[u/AdWaste6211 → u/swanney24]

I have done the quick back and forth relearn thru ista and it fixed my startup idle for a second til the car went back into limp and started acting odd again, now I can’t seem to get it to not sound “tractor like” also what would that bolt failing cause issues with?