Welcome to the club. I have the $300 ring shaped plastic part with electrical contacts and sensors (steering ctrl module) sitting in a box now waiting for me to get pissed off enough to have it done by dealer.
I could do the installation which requires the steering wheel to come off but the calibration of the computer module to talk to everything is the key. Traction ctrl uses the angle of the steering inputs to other various items... sooo yep good times are a comin. Not sure about putting it in and driving to dealer for calibration.
I have the same error code J527. The symptoms can differ depending on vehicle:
My traction control works fine
Interior fan goes out on full throttle at about 4500rpm
Headlights go out too
As do the turn signals
Here is the summer thread on this issue that I only got partial resolution to and it seems that the bad ground instigated it. Scroll halfway down or so for my Bentley screenshots on the fix - the airbag has to come out - great.
This thread states that the alternator might also be the issue. If that is the case it is getting done next time I do the timing belt in a few months.
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