I always fold up the electric mirrors on my 2018 T6 when I park it outside the house. A couple of times, after a few days of not using it, the mirrors have gone back down on both sides. It's been raining a lot here recently so I wondered if there was something that either happens so that they fold down automatically to prevent the mirrors from filling up with water or if something else less straightforward than that is going on. Any ideas/explanation very welcome, thanks!