I have 00 audi s4 and i have been driving this car for about 6 months....didn't have any issues until recently. A couple weeks ago i have noticed during my driving the car shut itself off. I had to stop to start the car again. From now on it happens at least once a day. Also, when to start the car, if there is no check engine light or EPC light, the car would not start....no lights on

PLEASE LET ME KNOW IF SOMEONE HAD SAME OR SIMILAR PROBLEM. I would like to know what's going on so I can take care of it.

Thanks in advance for you responses