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I'm getting the Drivetrain error on my dash for the 3rd time. Mine has been in with BMW and given the all clear.
I use BimmerLink and I always see that "charge air hose dropped" error in the list of errors. I replaced the charge air hose a few months back but still have that coming up. There's also a loud hiss from the engine when accelerating which I'm told is normal.
The DPF does need a regeneration which I think is causing the Drivetrain error.
IDK
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