1)I have a 91'535i which I have been enjoying but yesterday as I parked by a restuarant and wanted to lock my door and activate the power windows, the functions simply refused to work. The central locking system refused to work and the power windows failed to activate. When I manually opened the car and started the engine, I pressed the power windows' buttons but none of the windows operated. What could be the cause of this problems?????
2) During long distance travels my fan blower atimes stops blowing after about two hours or so. What could be wrong??