Originally Posted by TX76513

Having had spirited repair sessions with many ML of this genre and making the assumption the PO isn't mechanically savvy. Run the PBDII codes and see if there is anything related to MAS. We have had two that shifted as you described and it was not a mechanical condition but a signal connection with the MAS being the culprit. Just .02c worth if you are going to pull the trigger on the girl. If the interior and exterior are in good shape I would not be afraid of this ML.