Quoted from bsrhardy:
Thanks for all the help from this community. I am almost there. The only thing kicking my ass is this mirror test.
I can get in DIAG, GOTO Mirror Test, but can only test the UP. I cannot seem to find a way to test the DOWN. I cannot, even trying every button, to get the test to change to DOWN.
I need a bit of handholding here. Thoughts or guidance.
Sounds like your motor is gone, and the connection needs help. I just had to replace my motor. Marco has them. Definitely check your connection, though. It should attempt to go down.