Hi guys, please advise, my transmission is still jot engaging, when I start my car and change from P to R or N or D it shifts but does not engage, and when I go back to P it makes a grinding sound, I removed the transmission pan and when I switch the ignition on the solenoids makes a buzzing sound, but when I shift to sport mode and downshift to 1st, the buzz stops, but as soon as I either shift up or selects D or N or P the it buzzes again and makes a grinding sound when changing from R to P.
I tested each solenoid individually and it all works seems like car is still in a gear but not sure how to decifer from here.

 

You removed the oil pan, and then the gears wouldn't change, or?

Either way, a solenoid shouldn't buzz. They click, and that's it.

Did you follow the factory service manual testing precedure?