Noises During Shifting problems of the 2003 BMW 745

I purchased a 2003 745li November 2007 when coming to a stop there is a clunking noise with harsh downshift. Took car dealership on several occasions with concern and after several failed attempts to remedy the issue was finally made aware that there was service bulletin concerning transmission issue. Dealer stated that it was possibly from transmission and advised me to come back for repairs. In November 2008 was the first time that I had to get the transmission replaced because of the clunking with harsh downshift. This issue returned and progressed and the transmission was replaced for the second time due to same issue 08-2009. After second transmission installed issue still existed and was advised that there was a software issue with transmission and that there was not any other updates at this time and the information would be forwarded for BMW for analysis. The universal /guibo has been replaced 3-4 times since I've had the car because of clunking noise harsh downshifting. As time went on around may 2011 there was an incident where as I was driving, approaching and coming to a stop at a stop sign, in addition to the harsh clunking the car jerked and accelerated forward almost into ongoing traffic. Took it back to the dealership, they mentioned the service bulletin again concerning the issue stated that the transmission might need to be replaced. They first replaced the universal/guibo, which I had to pay out of pocket and the issue still exists. The incident that happened in may 2011 happened again for the second time in Nov. 2011. I believe that there are some major issues with transmission and electrical system. Since then I've been having, brake/drive malfunction among other issues. I consider this to be safety concern. This issue should be thoroughly investigated.

This vehicle has a defective transmission, BMW is aware of this but is banking on not enough complaints. When the car comes to a complete stop it pushes car to front as if being rear ended, but its the defective transmission guibo joint or and a software issue that BMW had installed in thousands of BMW vehicles at the time. There are many frustrated owners that have paid thousands of dollars for this car. It is unsafe cause it pushes car to front causing a possible hit to front car in a traffic situation. Here is more about this service bulletin, I feel BMW should fix this at no charge since this is a safety hazard. Read a/t - harsh 3-2/2-1 downshifts/clunk noise , si b 24 17 07 ,automatic transmission December 2007, technical service this service information bulletin supersedes si b24 17 07 dated July 2007. Designates changes to this revision warranty information covered under the terms of the BMW new vehicle limited warranty. Please refer to the latest ksd for all applicable labor operations and allowances. If the appropriate labor operation is not contained in ksd, then a work time labor operation should be used. Defect code 24 00 39 61 00.

New BMW 745i was purchased on October 29, 2003. Since January 2004, vehicle has on three separate occasions exhibited transmission failure. On each occasion, the vehicle would exhibit very hard shifting, followed by violent jerking, halting and downshifting while traveling at speed on the street or highway, throwing the passengers forward violently. Multiple transmission warning sounds and messages are displayed. Loud metallic grinding and rattling noises come from the transmission area. The car throws itself into park as the car slows to make a stop. Most recently, the car threw itself into park at 15 mph almost causing a rear end collision with the vehicle following behind. Eventually, the car puts itself into park and cannot be moved. Each time the car has had to have been towed away. Twice the car has stopped in an intersection and could not be moved. On each occasion, the dealer has denied there was a problem, only to claim upon my insistence that they look again that the problem is a software or computer problem. On the last occasion, the dealer admitted that the entire transmission needs to be replaced.