I'm also experiencing the ADAPTIVE STEERING FAULT SERVICE REQUIRED warning light.  It first started at 48,000 miles.  When it happens the steering wheel points to the left at 9 o'clock when the wheels are straight.  I brought it to my local dealer.  The tech couldn't find any problems or error codes on the onboard diagnostics.  It's been occurring intermittently for the past 4 month. About once every 5 weeks.   I brought it to the second dealership.  They recommend I replace the SECM, the entire steering wheel at a cost of $1729.  Has anyone has this problem successfully fixed?  If so, was it covered by the warranty or did you have to pay our of packet?>