2007 BMW 550I Power Trainautomatic Transmission Problems

2007 BMW 550I, AUTOMATIC TRANSMISSION, ABOUT 48,000 MILES. AFTER A PERIOD OF HIGHWAY DRIVING, IF REVERSE IS SELECTED (E.G., IN A PARKING LOT, A U-TURN THAT REQUIRES BACKING UP), THE TRANSMISSION WILL GO INTO NEUTRAL FOR SEVERAL SECONDS RATHER THAN IMMEDIATELY ENGAGING. SCENARIO 1 (COMMON): PULLING INTO PARKING LOT AFTER 22 MINUTE HIGHWAY COMMUTE TO WORK. I START TO GO BY AN OPEN SPOT AND NEED TO ENGAGE REVERSE IN ORDER TO PULL IN. I PUT THE CAR IN REVERSE, BUT THE TRANSMISSION GOES INTO NEUTRAL. AFTER ABOUT 3-5 SECONDS, REVERSE FINALLY ENGAGES. THIS IS A RECENT PHENOMENON. PREVIOUSLY, ENGAGEMENT WAS IMMEDIATE. INCIDENT 1 (6 JUNE 2011): AFTER DRIVING FOR A PERIOD OF TIME AT FREEWAY SPEEDS, A TIGHT U-TURN WAS REQUIRED. COMING OUT OF THE U-TURN, THE ROAD WAS DOWNHILL. I NEEDED TO PUT THE CAR IN REVERSE IN ORDER TO MAKE THE TIGHT U-TURN. I PUT THE SHIFTER...

I LEASED A BMW 328I ON 02/07/07. IT IS A BRAND NEW MODEL WITH A NEW ENGINE THAN BMW 325, ACCORDING TO THE SALESMAN. ON 02/16/07, WHILE I STOPPED THE VEHICLE AT THE RED LIGHT, I FOUND OUT THAT THE VEHICLE WOULD NOT START MOVING WHEN THE GREEN LIGHT WAS ON. THE CAR WAS STOPPED ON THE ROAD AND I HAD NO IDEA WHAT WAS GOING ON. LOTS OF CARS WERE BEHIND ME AND SPEEDING PAST MY CAR. I WAS VERY UPSET AND I GOT THE 800 TOLL FREE NUMBER FOR BMW'S FREE TOWING SERVICE FROM MY SALES PERSON VIA PHONE. THE FIRST LADY WHO ANSWERED THE PHONE TOLD ME TO CALL 911 AFTER A FIVE MINUTES TALKING TO ME WITH LOTS OF QUESTIONS. A NICE GENTLEMAN HELPED ME TO PUSH MY CAR TO A SAFETY STORES PARKING LOT. SO I CALLED 800 BMW TOW LINE NUMBER AGAIN. THE CAR...