I have a Audi A4 1.9tdi 2000 SE yesterday I went out and had no power steering so i toped it up and it came OK again not right but OK I drove about 8 mile and stopped swiched engine of for about and when I went to start had dead batray got jump start and went 8 mile back to my house on way started to lose exelaration and all lights in car went dead battery still no charge can you help thanks