Sudden errors

[Olza]

Just before trackday my gearbox starts to shift jerky. Error raised, in DCT i can see errors:
0x5A41 druck sensor1 kupplung: totalausfall
0x5A43 druck sensor2 kupplung: totalausfall
0x5A45 kupplung2: falscher druck
0x5A44 kupplung1: falscher druck

And infoerror:
0x5A84 fehler mit gemultiplexten umweltdaten

i still can drive, all gears works. But sometime shifts hard because of failsafe pressure.

Car is 156000 km, oil change was at 100000 km.
maybe someone know about that errors before i remove gearbox? Wires problem? Cant be both sensors in same time. Oil in mechatronic unit?

 

[aus335iguy]

There’s a thread, I think in an m5 forum about metal dust needing to be cleaned from certain parts such as sensors as they get magnetised over time. Could be it.
I don’t recall seeing those errors before exactly

 

[Olza]

Ok It was wear of oil lines to heat exvhanger and oil loss -> pressure loss...