my electric windows and electric mirrors keep not working randomly. i got in my car earlier, started her up but the windows wouldn't go down. none of the 4 would. neither would the electric mirrors work. i was in a hurry so drove to where i had to go, when i got back in the car, i started it and everything was working as normal. its the second time this has happened. can anyone shed some light on what might be causing the problem please?