[muzzymam]

Hi Eric I had the same issue after 3 tries Acura flashed the transmission with an updated software and flushed the fluid. All covered under the 70.000 powertrain warranty. It finally is gone and the transmission feels more responsive now and feels like the update lowered the rpms a little and took out the hesitation in the transmission. I also found 2 youtube videos showing this issue with the tach jumping at 15000 to 2000 rpm (look under mdx transmission issues ). This is a real issue and Acura is aware of the issue or they would not have new software updates for 2012 vehicles.