According to the NHTSA, BMW will be instituting a recall campaign on 2500 ///M3s equipped with the DCT double clutch transmission. It affects cars built before Sept 10, 2008. Covering 2008 and 2009 model year cars.
The issue is that when the car is rapidly slowing the transmission software may trigger a mulit-stage downshift. At low speeds this may cause the engine to stall; increasing the possibility of a crash.
To rectify this issue customers will have the engine and transmission software updated free of charge as part of the recall.
This process has reportedly begun and owner ‘s of ///M3s with the DCT option can call BMWNA at 1-800-831-1117 with any questions.