ok so i was driving my car today, then i went into a parking lot and shut it off. when i went to turn it back on it started up then about 10 seconds later shut off. then it wouldnt start and my fan wouldnt come on( i have an electric fan) so i had a friend come over and we eventually figured out it was a fuse. what im wondering is what caused this? if any1 knows or has any guesses let me kno