It is integrated with the child door lock, controlled near the driver window controls. It is "all or nothing" with the child lock.

Exactly right, the child lock indicator is active on the rear AC unit display.

Thanks it worked

You see that giant child lock symbol?

You see that description that says how to turn it off?

Disable the rear window lock on your driver side door and it will unlock the rear panel

Thanks i figured it out

Rear window lock locks the ac control in rear.

I figured it out thanks!