Electrical isues

Real easy and common fix. Your clue was the "door open" message. Look at the door switch on the "B" pillar. It has a plunger that's about 3/8" in diameter. It also has a plastic "nail", as I call it, in the middle. That nail is the self-adjuster. It has moved in too far, so the switch is turning on when the door vibrates open a little.

To keep this from happening again, there is a tiny hole where you can stick a pick to pull that nail out. If you simply pull it out about 3/8", it will self-adjust by itself the next time you close the door. To prevent this from happening again, pull that nail all the way out, then slide on three M5 lock washers, (or regular washers if you can find some that small). Push the nail back in that way. The lock washers will limit how far the nail can go in.

When I did this at the dealership, I added a touch of "professionalism" by using a tube of black touch-up paint to paint the washers so they did not stick out like a sore thumb.

A similar problem can occur with the sliding door switch, but that is of a different style, with a different solution.

Happy to hear you solved it. The old switch is not defective and did not need to be removed. Just pry that nail out 1/8" or more and you're done. It might not cause that problem again for years. The washers are just to insure it doesn't happen again.

Once you have that nail pried out, it will self-adjust the first time you close the door. Sometimes they over-adjust if the door is slammed really hard. That can also happen if the weatherstrip is badly deteriorated and torn away. That lets the door close too far, then the switch over-adjusts.

Instead of washers, you can also pull the nail all the way out, squirt a little RTV gasket sealer from a tube in there, (even bath tub caulk), then push the nail in. Once the sealer cures in a few hours, it will do the same thing the washers would do.