Do you have any type of BMW scanner? Or even ODBII to read live data? A good low cost BMW scanner is a Creator C310. I keep it in the glove box. Depending on scanner, you can read throttle position sensor voltage. We need codes or live data to help a little more.

yes i have bmw scanner and inpa and also i cheap scanner from amazon (and also a bluetooth obd device that i use with torque pro). i'll try to check that

i got some codes i didn't saw before.
the maf is new, brake switch error and can error i have no idea what that is.
can it be the automatic gearbox module that is defective?
can the regulator issue be related to the thermal oil level sensor ?
i also have crash sensor continiously active error in lcm since an airbag got triggered (no crash) but i don't think that could impact only the alternator since fuel pump & starter works.


like i said most issue start occuring when engine gets hot after 1h drive
alternator not charging seem related to that since sometimes it works and some other times not even if hot. regulator and almost stalling issue or trans failsafe sometimes resolves by itself.


full inpa report:
E R R O R M E M O R Y R E P O R T
------------------------------------- Date: 11/17/22 16:10:34
ECU: D_EGS
JobStatus: ---
- API-Job FsLesen: job status error
- API-Job FsLesen: job status error ================================================== =========== Variant: DSC57 1 Error in error memory
Error registration 1 : 0x0074: Bremsschalter Fehler <<<<!!!
Error accurances: 245
Fahrzeuggeschwindigkeit 6.38 km/h
ASC nicht passiv geschaltet
ABS-Regelung passiv
BLS betaetigt
ASC-Regelung passiv
ACB passiv
HBA passiv
ECD passiv
HDC passiv ================================================== ==================================Variant: ME72KWP1 2 Error in error memory
Error registration 1 : 0x006A: Switch Brake <<<<!!!
Error accurances: 2
Logistic counter : 37
Error accure 1st time at:
Engine speed 600.00 /min
Engine temperature 90.00 Grd C
Vehicle speed 0.00 km/h
Supply voltage 13.75 V
Error accure 2nd time at:
Engine speed 600.00 /min
Engine temperature 110.25 Grd C
Vehicle speed 6.00 km/h
Supply voltage 12.34 V
--
Error tested
--
--
--
--
--
--
--
--
--
Plausibility BLS/BLTS faulty current,
--
--
--
Plausibility BLS/BLTS faulty Initial,
--
--
--
--
--
Fault sporadic
--
--
------------------------------------------------------------------------------------
Error registration 2 : 0x0073: Hot film air mass meter <<<<!!!
Error accurances: 1
Logistic counter : 37
Error accure 1st time at:
Engine speed 4760.00 /min
Intake air temperature 25.50 Grd C
angle DK oriented to DK-at stop 22.36 % DK
ADC HFM 3.82 V
--
Error tested
--
--
--
--
--
--
voltage value to high current,
--
--
--
voltage value to high Initial,
--
--
--
--
--
--
--
--
--
--
-- ------------------------------------------------------------------------------------ ================================================== ==================================Variant: LWS5_1B >>>>>>>>>> No error found <<<<<<<<<<<
================================================== ==================================Variant: EHC >>>>>>>>>> No error found <<<<<<<<<<<
================================================== ==================================Variant: RDC 2 Error in error memory
Error registration 1 : 0x003D: Uebertragungskanal defekt, Position unbekannt <<<<!!!
Error accurances: 1
Fahrzeuggeschwindigkeit 100.00 km/h
statischer Fehler
Error code: 3D 21 32 ------------------------------------------------------------------------------------
Error registration 2 : 0x0004: Hardware: Eigenraderkennung nicht moeglich <<<<!!!
Error accurances: 3
Fahrzeuggeschwindigkeit 8.00 km/h
statischer Fehler
Error code: 04 23 04 ------------------------------------------------------------------------------------ ================================================== ==================================Variant: LCM_IV 1 Error in error memory
Error registration 1 : 0x0028: thermal sensor for oillevel defect <<<<!!!
Error accurances: 15
Error present
Error code: 28 2F
================================================== ==================================Ecu : D_0066 IFH-0009: NO RESPONSE FROM CONTROLUNIT
================================================== ==================================Variant: LWR2A >>>>>>>>>> No error found <<<<<<<<<<<
================================================== ==================================Variant: AIC >>>>>>>>>> No error found <<<<<<<<<<<
================================================== ==================================Ecu : D_0008 IFH-0009: NO RESPONSE FROM CONTROLUNIT
================================================== ==================================Variant: EWS3 >>>>>>>>>> No error found <<<<<<<<<<<
================================================== ==================================Ecu : D_00C0 IFH-0009: NO RESPONSE FROM CONTROLUNIT
================================================== ==================================Variant: ZKE3_GM4 2 Error in error memory
Error registration 1 : 0x0058: crash-sensor continuously active <<<<!!!
Error accurances: 1
Static error
------------------------------------------------------------------------------------
Error registration 2 : 0x005C: central locking mechanism BT short-circuited <<<<!!!
Error accurances: 10
Sporadic error
------------------------------------------------------------------------------------ ================================================== ==================================Ecu : D_SZM IFH-0009: NO RESPONSE FROM CONTROLUNIT
================================================== ==================================Ecu : D_00A4 IFH-0009: NO RESPONSE FROM CONTROLUNIT
================================================== ==================================Variant: IKI 2 Error in error memory
Error registration 1 : 0x008D: ATS signal: telegram error or no telegram <<<<!!!
Error accurances: 38
--
--
--
--
--
Sporadic error
error external ECU
Error code: 8D 90 26 ------------------------------------------------------------------------------------
Error registration 2 : 0x00C7: lever-type sensor 1 <<<<!!!
Error accurances: 31
Short circuit to batt+
--
--
--
--
Sporadic error
-- Error code: C7 81 1F ------------------------------------------------------------------------------------ ================================================== ==================================Ecu : D_00B0 IFH-0009: NO RESPONSE FROM CONTROLUNIT
================================================== ==================================Variant: IHKA39_5 >>>>>>>>>> No error found <<<<<<<<<<<
================================================== ==================================Ecu : D_ZUHEIZ IFH-0006: COMMAND NOT ACCEPTED
================================================== ==================================Variant: RADIO >>>>>>>>>> No error found <<<<<<<<<<<
================================================== ==================================
Variant: DSP2 >>>>>>>>>> No error found <<<<<<<<<<<
================================================== ==================================Ecu : D_0048 IFH-0009: NO RESPONSE FROM CONTROLUNIT
================================================== ==================================Variant: BIT2 >>>>>>>>>> No error found <<<<<<<<<<<
================================================== ==================================Variant: BORDMONI 2 Error in error memory
Error registration 1 : 0x0016: unbekannter Fehlerort <<<<!!!
Error accurances: 33
------------------------------------------------------------------------------------
Error registration 2 : 0x000B: I-Bus Fehler beim Senden <<<<!!!
Error accurances: 31
------------------------------------------------------------------------------------ ================================================== ==================================Variant: VIDEOMOD >>>>>>>>>> No error found <<<<<<<<<<<
================================================== ==================================Ecu : D_003B ================================================== ==================================Ecu : D_0048 IFH-0009: NO RESPONSE FROM CONTROLUNIT
================================================== ==================================Variant: NAVMK4_2 >>>>>>>>>> No error found <<<<<<<<<<<
================================================== ==================================Ecu : D_00BB IFH-0009: NO RESPONSE FROM CONTROLUNIT
================================================== ==================================Ecu : D_SITZ_B IFH-0009: NO RESPONSE FROM CONTROLUNIT
================================================== ==================================Ecu : D_SITZ_F IFH-0009: NO RESPONSE FROM CONTROLUNIT
================================================== ==================================Variant: SM53_4 >>>>>>>>>> No error found <<<<<<<<<<<
================================================== ==================================################ ################################################
This content will stored temporary temporär in ..\inpa\sgdat\na_fs.tmp
################################################## ##############

i saw what's happening with torque, after some times the fuel injection start to lean the engine i went from -10% ltft to -25% ltft + -25% stft in a couple minutes, after ~5min of almost stalling 10 times and lot of misfires/weak/jerky throttle response it goes back to normal. what is this, it only does this after 1h+ drive.

also two new errors

Hello.
I made a finding yesterday I let the car idle for 10minutes With no issue normal alternator voltage and then I activated the headlights and suddenly rough idle and voltage became completely instable.
In the past I had lot of water on passenger carpet that killed the LCM that I replaced. I'm wondering if some bad grounds under the carpet could cause this alternator issue ?
And if so how can I remove or pry part of the carpet to see if there is corrosion without removing center console.

I think it’s more likely that your alternator is just bad

To follow up on my earlier post

My Valeo was still not producing 13.5-14volts at idle, although it was at 1,000 RPM or more.. I had previously changed the voltage regulator..

So I brought 4 BMW alternators to a local rebuilder and he said the Valeo unit had a a bad rectifier.. I am getting all 4 units rebuilt at $199 ea.

A local rebuilder sold me that one. He is reputed to be good

Remove the seat, 4 bolts and a couple of wires to disconnect. Than just pull the carpet up! You need to address this first.

Ok thanks.
If I see corrosion how can I restore it ?

Just remove all connections that you can, wire brush, coat with dielectric grease and tighten appropriately. FYI, you may not "see" corrosion, so just do a very good clean of everything you can get a hold of.