sounds either a fuse, your battery or your alternator, the reason they do that is because those functions take power and if your battery's bad or your alternator isnt maintaining a charge while your driving, then you wont have sufficient power to power those functions. if its a bad fuse, all it will take is to go buy a new one at a auto supply shop (they're like 3 bucks) and open the fuse box most likely under the hood on the side of the engine compartment, and find the one thats not working and replace it.