Have had this car for 6 months and just recently when I pressed the button for the liftgate to go up, it slowly went up making a kind of squeaky, rubbing noise.. like it needed to be lubricated. It did come slowly back down. I tried it again, and heard the same noise going up and then it would not come back down. Does anyone know if this is something I or my husband can possibly fix at home? I've never had an automatic lift gate before.. Thanks for any help!