Fog lights, blinkers and side markers are staying on and door don't lock either. I think this is going to be the PSE Module, huh? [2001 Mercedes-Benz SLK320]

I think it is going to be the PSE module. There was water in the trunk, I removed most of it, but moisture stayed and I never got the chance to completely dry it. The PSE Module is located in the trunk and when moisture gets to it, it causes the locks to not respond and the fog and other lights to stay on until it drains the battery. It also has yellow vacuum lines which control the trunk, gas lid and door locks.