general problems of the 2005 BMW 645

I own a BMW 645ci 2005 convertible I have issues yes isssues with this vechile, first issue is the infamous idrive that never really worked properly since I purchased the car, it blinks on and off for 30mins then it would magically come on until one day it just didn't come back on this was after a trip to the dealer to get the convertible top lock reprogrammed. . So the car was included in the lawsuit so I takes it to the dealer for the reprogramming and my car came out worst then it went in the idrive never worked to this day which is 04/16/2018, my top only opens with the passenger side door slightly opened yes the door has to be open for the top to operate. . . This is what the dealer told me so I was so confused of what the reprogramming was for ? I need answers and it's nothing I did as a owner I was very to the book when it came to opening my top and operating the idrive and etc. . . The infamous coolant leak also comes from a defective bimmer pipe that was installed by the makers of the vehicle and we the customers has to pay to repair these issue that occur on 60% if not more of these cars . . .

I was driving on the autobahn and my BMW 645 and all fault message were displayed. After that, the car speed abruptly,then just cut off!I it restarted with codes and all then shut off again. This continued five times until I reached my destination. I restart the car,and it started, but the radio and door siren was not working with no fault messages;no service engine light; and drove fine for a few min. And then did the same thing again!! I took the car to a BMW repair shopped to have the fault codes read, which end up being a long list of codes.