Car is a 2000 CLK 430. A couple of days ago, the trunk open indicator LED on the console trunk switch cam on and stayed on. I hadn't opened the trunk recently. Because the car thinks the trunk is open, the alarm won't arm because of this.
I first made sure the trunk WAS truly closed. It is.

The only switch i could locate is the grey pin switch a couple of inches to the left of the trunk latch. This is on the trunk, not the chassis. Played with the switch. LED stayed on.

I removed the switch and tested it. It seems to be working fine.

Trunk open = switch closed (pin extended)
Trunk Closed = Switch open. (pin in)

Is that the way the switch is supposed to work? Is there another switch?

Even when i disconnect the switch, that should open the circuit making the trunk closed to the computer, but my light stays on.

I also noticed the trunk light doesn't work. The bulb is fine. I was going to pull the bulb, in case it was lit and draining the battery. I dont recall if the bulb ever worked, so i dont know if that is related.

I dont want to mess with it too much, because i assume it is attached to a computer.

Any ideas?? thanks ahead of time.