When I am driving on the highway with cruise control on and I try to do almost anything else electrical (i.e. Put window up or down, flash high beams) the radio and screen shut off and restart. Then the dash flashes an HDC System Not Available, then Terrain Response System Faulty flashes after that. It also kicks off the cruise control. Now there appears to be nothing else wrong with the car at all and everything goes back to normal. Anyone have an idea what is happening? Thank you in advance!