I have a May 07 Z2. I just installed it. I did the bypass update on the bench.
When I installed it I grounded the parking brake wire.
Now when I start it up I get a message about the parking brake corrected wrong or something to that effect.
I also get a message about viewing DVD from the front seat when I start moving and video goes away.
As I said, the parking brake is grounded at all times and I have my VSS wire hooked up.
Thanks in advance
Rich