All those symptoms (except the ESP, ABS and ETC warnings, they result from having the batt disconnected,) with the lights and fan malfunctioning, indicate that water has leaked into the ECU box, then dripped from the ECU box and soaked the Central Electric Control Module below the ECU box, under the drivers side dash. The fan running constantly on fast is from water in the ECU box, and the other weird lighting and electrical symptoms are from water soaking the CECM. You must remove all the water from the ECU box, dry thoroughly, The ECU power supply relay may need to be replaced, as well as anything else in the ECU box that got wet. You may be able to save the CECM by removing the module cover and drying the circuit board with a hair dryer, be carefull not to over heat the circuit board, limit the heat to about 100 F. If the driver's side carpet is wet, there could be water in the Comfort/Convienience Control Module box under the driver's side carpet, forward of the driver's seat, that will cause weird symptoms with the remote door locking and alarm functions.
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