Transmission Gear Slipping Problems of BMW 750

On a day-to-day basis my car would drive probly 80 miles in the city and when I'm on the highway the transmission will start slipping while going 65 miles an hour and almost come to a dead stop on the highway along with that the battery also draining all the time while driving and I have to charge the battery all the time.

See all problems of the 2009 BMW 750 🔎.

Transmission slips into park at a light. County street. Did it to three drivers.

See all problems of the 2007 BMW 750 🔎.

I was driving on the freeway and coming down the ramp where I slowed down to go around ramp and when I got to the bottom of ramp I pressed on the gas pedal to pick up speed and I heard a whistling noise and that's when the transmission light came on and the car slowed down on its on as well as the transmission slipping.

See all problems of the 2006 BMW 750 🔎.

There are times when I press on the gas and it feels like the transmission would be slipping and then a violent kick from the back of the car comes right after.

Tl- the contact owns a 2007 BMW 750li. The contact stated that there had been no concerns with the vehicle before the recall repair. The contact had the recall repair for NHTSA campaign id number: 12v502000 (electrical system, power train) and after the repair the contact had noticed the transmission slipping gears at random. The vehicle was taken to an authorized dealer who was to inspect, diagnose and repair the vehicle. The manufacturer was notified that the failure started after the recall repair. The approximate failure mileage was 75000. Dyd.

Transmission slips and slams into gear frequently transitioning from 2-1 or 1-2. I've taken it to the dealer, they replaced computer systems and updated software but the problem still exists.