2015 BMW 328I Electrical System Problems

GRAN TURISMO TAILGATE CRASHED UPON MY HEAD WITHOUT TAIL WARNING LIGHTS FLASHING OR ALARM. NO FOOT KICKING TO ACTIVATE THE FEATURE WAS INVOKED. WHILE PARKED WITH THE HATCH OPEN, I WAS SIMPLY PLACING GROCERIES INTO MY TRUNK. THE PROBLEM IS INTERMITTENT, AND CAN NOT BE REPEATED UPON DEMAND. I HAVE BEEN ABLE TO DEMO THE PROBLEM SEVERAL TIMES SINCE THE FIRST EVENT. I ALSO UNCOVERED SEVERAL OTHER PROBLEMS WITH THE TAILGATE. THE KICKING FEATURE TO ACTIVATE TAILGATE LIFTING AND LOWERING DOESN'T WORK 100%. VIGOROUS KICKING IN DIFFERENT SPOTS IS NEEDED TO ACTIVATE THE HANDS FREE FEATURE. SOMETIMES THERE IS A PARTIAL DROP AND REOPENING OF THE TAILGATE. SOMETIMES THE ALARM WORKS AND SOMETIMES NOT. WHEN HANDS FREE CLOSING OF HATCH, AN OBSTRUCTION WILL NOT CAUSE THE DOOR TO RETREAT. FINALLY THE HATCH WILL CLOSE WITHOUT ANY WARNING.