Hey guys. Bought my first 3rd gen and they dealer I picked her up at only gave me one key. (Trade in, so assuming PO lost other key) and of course it's a copy. (Not oem key) I'm trying to use said key in the back hatch lock to roll the window down and it won't budge. The key opens all other doors and starts vehicle. Is this a result of not having oem key or is maybe the lock siezed? Window rolls down fine with interior switch. If it is the key how can I get one programmed? Thanks much!