2001 Passat gone haywire

I have a 2001 V6 All Motion Passat that at 50,000 miles has suddenly developed the following electric quirks. I am looking for a common demoninator here since they all seem to have happened at once.

1. Electric fan blows the 40A fuse
2. When I put my foot on the brake the instrument lights go on as well as the parking lights.
3. The rear center brake light stays lit even if your foot is not on the brake.
4. The climate control temperature starts dropping to below zero readings and the heat comes on in the summer. Eventually after a while it gets the temperature right.

Could all these be related? They all seem to be on seperate circuits. Fuses all ok.

I am stumped.

Any insight would be appreciated before I bring it to the dealer.