cf370z

I took my car threw car wash at work to day and right after. My windshield wipers would not shut off. So I shut car off and tried restarting.when I did this the dash started flashing out going dead. Coming back on and off I drove it .And the hazard lights came on would not shut off .Well they would but I could do nothing to shut them off. The key light came on after I got home.
And the dash was dead at this point drove it home dead. Shut car off . And replaced battery in key fob. Car would start as soon as I pushed clutch in without hitting button. But would not shut off I took key inside away from car and it still would not shut off . After replacing the battery in fob the key light still comes on and will not start like it should if I play around it will start sometimes but still will not shut off. It threw a code for loss of communication to HVAC. Only code that is in it anyone have any ideas
Thank you