Has anyone successfully entered the diagnostic menu on the Z2 as described in the manual and on this website? For some reason, I can't enter this mode. Is there a trick?

I have successfully entered that menu... it's quite simple

1) turn your key to ACC

2) hit eject button on your Z2

3) hit CD Eject button and then hit reset button

4) hold them both for 5-10 seconds

5) release them (you should see a password prompt on the screen)

6) press up, up, down, down (on P.List button)

7) press Enter (T button)

Welcome to the Service Menu Screen!

Hope this helps.

dimaj

Thanks...I wasn't hitting the CD eject...just the front eject button.

This might be a dumb question, but what can you do from this menu?

You can run some diagnostics on the system

for example, you can check integrity of a hard drive (by running Read and Write tests) among other things... they have like 2 or 3 screens with different options.

dimaj