Two problems related to noises during shifting have been reported for the 2004 BMW 745. The most recently reported issues are listed below.
The contact owns a 2004 BMW 745i. The contact stated that the vehicle was parked in the driveway when the gear shifted out of park and into reverse. As a result, the vehicle crashed into the garage. The vehicle was taken to the dealer for diagnostics but the diagnostic failed to produce any failure codes. The dealer stated there was nothing wrong with the vehicle. The manufacturer was made aware of the failure but the vehicle was not repaired. The failure and the current mileage was 119,000. The consumer stated the vehicle was running in the driveway for about 10 minutes, when suddenly there was a loud noise. She immediately went outside and discovered the vehicle had went into reverse on its own and hit the garage door. Updated 05/03/12.
Vehicle type is a 2004 745li BMW v-8 6 speed transmission. When the car is in 5th gear the car hiccups like it wants to up shift but then does not. It cause the car it jerk every 3 to 5 seconds when in 5th gear. When the car is in any other gear in does not do this. I have had a transmission fluid completely changed out. In which the fluid smelled burnt and looked brown in color. BMW says that it is a life time fluid (it is not). When the car is accelerating through 5th gear it does not do the problem either. There is something clearly wrong which the transmission. I have taking the car to two independent transmission shops and they have no idea. I have learned that the car will stay in 6th gear at 45 mph and normally cruise in the city in 4th gear at lower speeds and avoid 5th gear with the use of the manual shifts on the steering wheel. Also, the dynamic drive system fails about once a month in which you can turn the car off and on again and the car dynamic drive system works fine for a month or so. This causes the car chassis to roll when cornering. During this time of failure the stereo makes odd noises in which I think it is because the stereo volume is set to get louder as the car speed increases. These issues all tend to happen at the same time.