Automatic Transmission Control Module problems of the 2010 Infiniti G37

Transmission: transmission does not operate properly. Harsh downshifting (usually around 30-40 mph) began within first two months of ownership and continues to this day. Significant lag (2-3 seconds) occurs when accelerating while moving or while nearly stopped creating unsafe driving conditions when entering an intersection, merging into traffic, or accelerating to avoid a collision. Service bulletins have been issued by manufacturer and applied to vehicle in attempt to address problems (ecm/tcm reprogrammings), however, problems persist and are constant. Initially, manufacturer communicated with me in attempt to resolve problems, including a commitment to replace transmission, but has now ceased communication. Automobile forums and manufacturer service bulletins indicate this is a widely known, widely experienced problem with this model of transmission. It appears manufacturer is no longer committed to resolving these problems. Air bags: passenger side air bag signal will illuminate indicating passenger side air bag is deactivated although there is an adult passenger in the seat. If the passenger lifts off the seat for 10 seconds, the illumination will cease and presumably the passenger air bag is once again activated, however, sometimes the signal will again illuminate and the passenger must again lift off the seat to cease illumination to ensure proper operation of passenger side air bag. Proper operation of the passenger side air bag is uncertain. The manufacturer told me they would contact dealership in order to diagnose this problem but they have not done so.