convertible top in my 2016 cascada not close?

Having the same issue!! car won't stop dinging , I keep getting warning light that top is not secure to the point now it's running down my battery. It dinga when the car is off and while im driving.... trunk doesn't open either and automatic windows doesn't work anymore.

The problem is the roof latch sensor. It isn’t up front like you’d think tho. The sensor itself is in the convertible roof motor area driver side. Fix this and all your problems disappear. The sensor itself costs about $40 for a GM OEM part online. The man hours should take no more than 2. This isn’t a job that should cost more than a few hundred. Electrical problems affect different systems and that’s what’s happening here. I know because I have a ‘16 Cascada. A friend and I fixed it ourselves. I had exact same issues, warning light after car turned off and while on, trunk didn’t work, windows would go down on their own, etc. Did someone mess with your fuses by chance?