Hey everyone,
Many of us here, PMDG owners, have struggled with GSX Pro saying that "the parking brake needs to be set" even when we've set it and applied the chocks.
Well I have good news! Today I realized that there's a glitch with the PMDG parking brake!!! Most of us, like me, were setting the parking brake using the default keyboard command (CTRL + Del) on the numpad. We all heard the clicking so it should work right? No, not all the time. I also always wondered why the red brake light was not turning on.
Anyways, I watched a video and by pressing the toe brakes on your rudder pedals for 2 or so seconds and then with the mouse clicking on the brake lever, this engages the parking brake on or off and the visual red light turns on/off accordingly. Additionally, you can visually see the before and after state of the parking brake lever. This was not visible when using the keyboard shortcut (CTRL + Del) and you could not tell if the brake was on or off.
Now you know!
I let Emanuel at PMDG know as well. Hopefully they will fix this glitch in the future, but by using the rudder brakes and the mouse, this works like a charm.