BLOWER MOTOR HAS STARTED RUNNING EVEN WHEN IT'S SWITCHED OFF on 2003 BMW X5

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HI THE BLOWER MOTOR STARTED BY ITSELF IN THE BACK CONSOLE AND THEN THE BLOWER WOULD INCREASE IF I TURNED THE CONTROL COMPLETELY OFF. IT EVEN RAN WHEN I SWITCHED THE ENGINE OFF AND REMOVED THE KEYS. NOW IT WONT CHARGE THE BATTERY THE CHARGER ONLY COMES ON FOR A SECOND THEN GOES OFF. I'VE TRIED 3 OTHER GOOD CHARGERS SAME THING. ANY IDEAS PLEASE, COULD IT BE THE REAR BLOWER CONSOLE SENSOR? OR DOES IT SOUND MORE LIKE A MODULE GONE DOWN PLEASE? CAN'T START THE ENGINE TO GET IT TO A GARAGE MILES AWAY. HAVEN'T TRIED JUMPING IT YET THOUGH. THANKS FOR LOOKING STEVE