At my last couple of visits, they first refused to look deeper into the issue and stated it was still a firmware issue. After I found out 17.17.4 fixed the AP issue, I realized if I don't act tough my issue will not be fixed quickly. Last visit I went straight to their manager and stated the issue. Manager promised me they will give me a X to drive and I can keep it as long as my car get fixed. (Before I never got a X as loaner even my car is X 100D) and next day my car was fixed.