What do I need to replace to when the turn signal light works intermittently for BMW 3 series?

The turn signal light stops working every now and then. I hear the fast tempo ticking and the indicator in the front panel lights up. Every now and then it works again. I know that means it's not the light bulb. Does anyone know what needs to be replaced? I have a 2002 3-series.What do I need to replace to when the turn signal light works intermittently for BMW 3 series?The turn signal has a flasher switch in the fuse box. Check your owners manual for name and location. these are not repairable, but are easily replaced. You can get one at any auto parts store.