One problem related to transmission not engage has been reported for the 2010 Acura TL. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2010 Acura TL based on all problems reported for the 2010 TL.
While shifting from 2nd to 3rd gear, the 3rd gear does not fully engage, it pops back into neutral. I then had to shift back to 2nd and back into 3rd gear (which was successful). This happens multiple times a week. This is very dangerous as you are put into neutral in the middle of traffic. Acura has issues a TSB for the previous generation Tl, but not this generation even though many customers have had the same issue. Acura refuses to do anything about it until they can replicate it themselves. This is nearly impossible as it is an intermittent issue that does not happen every single time. There are no issues with any other gears.