When I started up my S-4 today, our first really hot day in NY, the emergency flashers went on by themselves accompanied by a beeping sound. I tried to turn them off, but they only raced into double speed. After several minutes they went off by themselves. The Audi dealer called it a "glitch," which is like a doctor calling a sickness "ideopathic," which is like a lay person saying, "it beats me." Anyone else encounter that?