What scan solution?

I would use foxwell to monitor the cam angles when you get this condition.

A few different things can cause them to not be the angle they should be and there are six different cam angle values that can be tracked with at least foxwell and surely others.

Cam position sensors original? OEM?

Vanos solenoids ever cleaned?

Oil weight factory spec?

I forgot if the m54 had the cage in the middle of the oil filter but I had one fail on an n52 gave similar symptoms.

How many miles? Both our M54 had the intake CPS fail at 132,000 ± 4000 miles just for reference.

The vanos never gave us any problems on either up to 190/205

I've had vanos solenoid fail on n52 at 125

I've seen oil weight mess with vanos on various engines.

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2011 E70 • N55 (me)
2012 E70 • N63 (wife)