[BMWCowboy]

Hello BMW Forum Gods! I stand before you today with a request for assistance from the high council.

I've had this 2012 535i for about five months now and am dealing with a no-longer intermittent electrical gremlin. The first occurrence was probably about a month ago; I get in after being at work all day and get "transmission error" and "DCS Error." Turned it off and back on and no errors. Deleted all codes, drove home, checked codes... no codes. Drove just fine.

Fast forward to a few days ago; I get in first thing in the morning and the same "transmission error" is showing on the dash. Didn't want to start...didn't even try. Turned if off, let it sit for a minute, ignition on... no problems, started right up, no error message ("All Systems OK" on iDrive).

Long story long, all things are fine after the first start-up of the day... no errors are showing until I walk away from it for 8+ hours... I made several trips yesterday, of various lengths, without any issues (kept checking codes and nothing showed up). Again, this morning, after she has been sitting overnight... "Transmission Error" on the dash.

These codes are all showing as "not present but stored" EXCEPT for codes BOLD/RED. Also, those that are showing mileage at error are all showing the current mileage minus 1 mile. I'm at xxx167, they all show error occurred at xxx166.

Lots of "missing messages." Any guidance would be helpful and appreciated!

Here are the codes I just pulled...

Date: 4/9/23 1:35:31 PM
VIN: WBAFR7C50CC808011

06 Allround-view camera 1 error

CAAC0A: K-CAN ID 3F9h (data drive train) Default error, this is not a TRSVC ECU error

10 Central gateway module 1 error

801C20: Central fault memory full

12 Motor electronics 10 errors

CDC104: A-CAN, message (data gear train, 0x1AF): missing
CDAC04: FA-CAN, message (status gearbox control unit, 0x39A): missing
CDBF04: A-CAN, message (status gearbox control unit, 0x39A): missing
CDBB04: A-CAN, message (request torque crankshaft gearbox 2, 0xA0): missing
CDC204: A-CAN, message (request torque crankshaft transmission, 0xB0): missing
CDBE04: A-CAN, message (display engine speed dynamization, 0xF8): missing
CDB304: FA-CAN, message (data display gear train, 0x3FD): missing
231F04: A- / FA-CAN, messages (transmission): missing
CDC004: A-CAN, message (OBD transmission diagnosis, 0x396): missing
CDB904: FA-CAN, message (OBD transmission diagnosis, 0x396): missing

18 Transmission control 1 error

CF1541: Message group error 3 (effect while driving: none) Message missing, receiver EGS (A-CAN), transmitter DME / DDE (A-CAN)

1C Integrated chassis management 2 errors

D02D54: Signal error (torque crankshaft 1, ID: TORQ_CRSH_1) - qualifier
D0157A: Signal error (wheel torque drive 4, ID: WMOM_DRV_4) - Invalid

29 Dynamic stability control MK60 E5 1 error

D35940: Signal error (default damper component passive, ID: SPEC_DMP_QTA_PSV) Sender: ICM_V, VDC1 - invalid

30 Electric steering lock 1 error

D52D54: Signal error (torque crankshaft 1, ID: TORQ_CRSH_1) Sender: DME1 - Qualifier

39 Vertical dynamics management 1 error

D76E10: Signal (230.0.2, Status_Gangwahl_Antrieb): Invalid value

56 Roof function centre 1 error

801A4C: SINE: Internal supply undervoltage

5E Gear selector switch 2 errors

E09400: Message (data display gear train, 0x3FD) missing, receiver GWS (PT-CAN),
transmitter EGS (PT-CAN)
E09410: Message (data display gear train, 0x3FD) missing, receiver GWS (PT-CAN2), transmitter EGS (PT-CAN2)

60 Instrument panel 1 error

E11460: Message (data display gear train, 0x3FD) missing, receiver KOMBI, sender EGS DKG

6D Seat module, driver, rear 1 error

8029B1: Control seat climate cushion: short circuit to minus or interruption

72 Driver's side footwell module 1 error

E5850F: Invalid telegram data drive train 2 DT_PT_2 (1017 / 3F9h)

[SWFLf10]

Could be a long shot, but it could be as simple as the battery. A failing battery seems to cause all kinds of headaches that don’t seem to make sense. I personally would start there with a new battery and have it properly registered to the car.

[ZebMacahan]

It is super weird but I'm having the exact same issue with my 2012 740Li (guess we have the same gearbox etc)

Entirely random transmission malfunction errors pop up and EXACTLY at that same mileage, I gett Chassis Management, Footwell Module, D0157A, D3557A, D76E10, CAAC0A, 401012

I've been looking to have my transmission mechatronic fixed (speed sensor) as my codes are always related to speed sensor issues 400625 but now I just don't know anymore.

Changed battery and registered it but still same crap every week or so.