Q: Windows open during storm & caused multiple problems

Last week I had left the windows open in my SUV during a huge storm. A few minutes after I started my vehicle, the windshield wipers went wild. They had turned on by themselves. Then, the ignition light turned on after a few more minutes. The next day, it was the tow haul light that turned on and then the check gauge light. There had been No problems before the storm so I'm assuming water got on the steering wheel and travelled through the system. Using a super chip, I plugged it in to diagnose the problem. There was a reading about the computer. Please give me your diagnosis of the problem and what I can do to fix it. Thank you.