When we would get ready to leave, we would step into the garage, and press the door open switch on the wall. Then get into the MX, and back out. As we would leave driveway, the door would not close. We would turn around, come back in the driveway and close the door using HomeLink. Upon return, the door would AutoOpen for us. We would typically close the door using the wall switch.
We have discovered that if, when we're leaving, we use the MX's HomeLink remote to open the garage door, the door will AutoClose correctly as we leave the driveway.
So, the question is, does the car keep track of what it thinks the state of the door is? And only modify that presumed state based on commands it has sent? Or what?
My guess is that the SW in the car is trying t keep track of whether it thinks the door is open or closed, and is confused.
My auto close works 99% of the time (there 'bouts). But it too me a while to find the secret handshake. What works for me.
Check what you are doing when you get in the car.
This was my mistake. I was turning on A/C or increasing the radio volume. Touching the screen or adjusting the volume before I pulled forward and triggered the Homelink auto-close window seemed to stop the auto-close window from appearing. One thing I did was; I stopped turning the A/C fan on.
Right now, I am not connecting to my home wifi. So each time I get in the S, the big "connect to Wifi screen" is up. I press the X to close it. Then when I put the car in Drive to pull forward to the garage door, the auto-close menu comes up. If I close the wifi window, then press the A/C fan on button, the auto-close window does not pop up. And it as I reach the 20 foot limit where it ordinarily would close, it does not close the door.
What are you doing when you get in your car? Are you pressing anything on the screen before you put the car in Drive/Reverse and move toward the door opening? If you are, try not touching the screen. See it if makes a difference.
My best experience with auto-close started when I brought up the Homelink menu, put the car in Drive and pulled forward and just as the top of the center console's Homelink auto-close window came up, I stoppped and pressed the Location reset button. Then closed the center console settings screen. Now, as soon as I put the car in Drive and start pulling forward, the auto-close window pops up.
And reference your question does the car try to keep track if the door is open or closed. Its my understanding that Homelink only sends a signal to the GDO. It doesn't know if the door is open or closed. So maybe the car is trying to keep track? I don't think so, at while back when I was trying learn the secret handshake I tried some silly stuff. I stopped before the Homelink saw my car, and walked up to the door and opened it with my GDO remote. Then went back to the car and drove up. The auto-open window popped up and the signal was sent and the door (that was open already) started closing. I let it close, then backed away and started toward it again. It did nothing. Had to use the remote to open it again.
Then tried it another way. Pulled the car outside using the wall switch to open. Cancelled the auto close. As I pulled away, I opened the door with the car's Homelink button, that I manually pressed. Drove around the block and came back. the door was still open as I approached. When the car got close, the auto-open window came up and the door closed. The car did not know whether the door was open or closed, IMO.
I think that when I touched the screen for anything, it was buffering or the touch screen interpreted my touch as a cancel for the auto-close window before the window even displayed. When I stopped doing anything on the screen the auto-close window comes up.