NHTSA Complaint #10734756 — 2012 HYUNDAI ELANTRA

I HAVE A HYUNDAI ELANTRA LIMITED, 2012, WITH THE TECHNOLOGY PACKAGE. THERE ARE MULTIPLE ISSUES WITH MY CAR, THAT HAVE OCCURRED SINCE I PURCHASED IT BRAND NEW OFF THE LOT IN 2011. WHENEVER I TAKE THE CAR TO THE SHOP TO HAVE THE ISSUES CHECKED, I AM ALWAYS TOLD THAT THEY WERE UNABLE TO REPLICATE THE PROBLEM, SO COULDN'T FIND ANYTHING TO FIX. FIRST, THERE ARE SERIOUS ISSUES WITH THE TRANSMISSION. WHEN TAKING THE CAR OUT OF PARK AND INTO DRIVE OR REVERSE, IT OFTEN LURCHES INTO GEAR, WHICH THEN CONTINUES AS I DRIVE INTO 1ST, 2ND, 3RD, AND SOMETIMES 4TH GEAR. IT SHIFTS REALLY HARD, AS IF THE CAR WERE A MANUAL AND I WAS NOT SHIFTING VERY WELL BETWEEN GEARS. A COUPLE OF MONTHS AGO (~JUNE 2015) THE CHECK ENGINE LIGHT CAME ON FOR THE FIRST TIME, AND THE SHOP SAID THAT IT WAS A TRANSMISSION TEMPERATURE SENSOR ERROR. THE CHECK ENGINE LIGHT CAME ON THE 2ND TIME THIS WEEK ON 7/14, AND TURNED OFF WITHIN 24 HOURS. I'VE CONTINUED TO HAVE THIS JERKING SHIFT ISSUE, THOUGH IT NEVER SEEMS TO HAPPEN WHEN IT'S AT THE SHOP. SECOND, THERE IS SOME KIND OF ELECTRICAL ISSUE/SHORT IN THE CAR, BECAUSE SOMETIMES WHEN I HAVE WINDOWS DOWN AND I HIT THE LEVER TO ROLL THE DRIVER'S WINDOW UP THE SUNROOF ALSO STARTS TO OPEN/CLOSE! OR, THE WINDOWS DON'T GO UP/DOWN AS HARD/SOFT AS I MOVE THE LEVER. ALSO, IN THE PAST MONTH OR SO (JULY 2015) THE PROXIMITY KEY SEEMS TO NOT WORK, AND I HAVE TO PRESS THE BUTTON ON THE DOOR HANDLE MULTIPLE (UP TO 10) TIMES BEFORE THE CAR WILL LOCK/UNLOCK. THIS ALSO PREVENTS ME FROM BEING ABLE TO START THE CAR (IGNITION SWITCH) BECAUSE IT DOESN'T RECOGNIZE THE KEY IS INSIDE THE VEHICLE. PLEASE HELP!