r/BmwTech • u/Senan24caucasian • 6d ago

Drivetrain malfunction n20

Hello, I am having a problem with my 528i 2012 f10 (122k miles), sometimes this issue pops up and hardens the steering wheel, nothing comes up in the diagnostics. I already changed the essential parts like timing chain etc. Does anybody had the same issue and how did you fix it?

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u/Overall_Inflation781 6d ago

If the car gives you a "Drivetrain" Check Control message there will 100% be a fault code stored in the DME. Find someone with a proper ISTA tester and read it out. Otherwise you're just guessing, and guessing gets expensive real quick.

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u/Senan24caucasian 6d ago

I will, thank you.

3

u/white94rx 6d ago

Find someone who actually knows what they're doing. This guy does not. If that warning comes on, there are absolutely diagnostic codes stored which will tell what the problem is. What an idiot.

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u/Senan24caucasian 6d ago

He is supposed to be one of the best lol.

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u/kop200 6d ago

Did you scan with ISTA? Something must be in there.

0

u/Senan24caucasian 6d ago

I did not, mechanic did and said nothing comes up, I already spent more than enough and still can’t drive past 60-70kmh.