Yesterday was another roller coaster with our two Gravities. In late afternoon I saw that both Gravities had received 3.5.1 for download. It downloaded without issues in our older Gravity. Since we were going to dinner in the newer Gravity, I held off with the download until we got back home.
When leaving for dinner, the key fob would not open the car, as has increasingly been the case over the past two weeks. So I used the key card. Same thing when leaving dinner to return home. When I got home, I plugged the car in and went inside before starting the download from my app. When I tried, I got a message that the download couldn't proceed. I went to the garage and found that the Gravity had not powered down. The doors were unlocked, the interior lights were still on, and the front and rear exterior lights were running the linear pulse to indicate charging (something that usually stop within a minute after leaving the car).
So I went back inside to retrieve the key fob to use it to lock the car. The car did not respond. So I used the app to lock the car. The driver door locked, and the mirrors folded in, but the other doors remained unlocked and the exterior lights continued to pulse. (This is the opposite of what had been happening over the last few days, when the driver door would sometimes unlock, but the passenger doors would not.)
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At this point I called Customer Care. They said their system was showing the left rear door was open. No one had opened that door all day, and we had just driven the car to dinner and back with no indication the door was open. But I checked, anyway, only to find it fully closed. Nor was I getting a warning light on the dashboard showing an open door. When I opened and reclosed it, the car still would not power down, self-lock, or respond to a key fob command. So I used the app to lock the car, and this finally succeeded.
I now ran the 3.5.1 download, hoping the issue would disappear with the update. I also ran a key fob update on all four key fobs. One fob indicated it was up to date (the one I had been using on the newer Gravity), but the other three needed the update. I went back to the car about two hours later after the app showed the download was complete to do the reboot as I always do after an update. The car wouldn't respond to the key fob, so I again had to use the app to lock and unlock the car. I was also getting a warning that the key fob was not detected, although I had replaced the battery a few days ago while attempting to get the fob to work that day.
Thus passed another day of unrelenting Lucid malfunctions.
P.S. This update did not fix the dashboard VIBE lighting issue several owners have been experiencing.