This is most likely one of several hardware problems. Of course it could also be you accidentally activating it with the app widget? Does that even work in the Caymans?
Good luck, let us know how it goes!
- and no, the app widget doesn't work here ....... duck tape could be a solution, but not very elegant.
Submit a service ticket
I guess that is worth a try, assuming you could get a software fix pushed to your location. Have you already done a soft reset, and if that did not work, a hard reset?
I wasn't joking and it's the most obvious answer. Have you looked at the latch mechanisms? all plastic. Not exactly a material that is low-friction and inert to ambient temps. All tailgate malfunctions I've experienced coincide with climate. Very chilly days and very hot days. The mechanisms need to be lubricated, adjusted or replaced. In my case, lubrication is all mine needed. But I think that's just a band-aid fix. This is not a software issue. The resets don't change the fundamental flaw in choice of materials used in these parts; of plastic-on-plastic friction.
Ok that I missed. Other than keeping the latches clean and well-lubricated, they're SOL. But there is a flaw in choice of materials for the latches. And it's not a Rivian exclusive. Other vehicles with plastic latches have similar problems. Result of industry wide trend to lower costs by using plastics instead of metals.
Can you record it occurring?
Although there have been some latch-related problems reported by others, I have never heard about this particular problem. It's usually failure to drop, or failure to latch on one side, or a torsion bar that popped out and needs to be re-attached - never an automatic operation on start/stop.
