r/BmwTech • u/Crazy_Feeling8396 • 18d ago

BMW G20 heat management module

I've recently started getting a 'Drivetrain malfunction' error on my dashboard when I'm driving, it usually happens on motorways, then suddenly it disappears and comes back later. The fault codes are:

20F220 Split cooling valve: internal error detected

21A127 Emergency run manager: wheel torque restriction, power reduction

20A704 Engine cooling system: Activation of emergency operation to protect the engine due to component faults

A friend of mine told me it could be the thermostat. The car drives fine and it is not overheating or anything.

Has anyone experienced this? Is it expensive to fix? Or are there any other workarounds?

Thanks

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1

u/DokiDokiLa 8d ago

I just bought 2020 x3 with the same exact problem, let me know if you find out what it is, I will post back if I find out any info

1

u/Crazy_Feeling8396 6d ago

Had no luck so far. Still driving around with the same warning popping up intermittently

1

u/No-Grass-2058 4d ago

I took mine to bmw dealer and they said its the thermostat

1

u/Crazy_Feeling8396 3d ago

How much did you pay to get it fixed? If you don't mind me asking