Originally Posted by 05focusST91
i did mine at around 78k, then the pulley crapped out when i was at around 92k, i do mostly stop and go driving but at least i got it through my dealer and it was under a year old so i had a free replacement and changed it at work. I wouldnt worry about it unless your battery light comes on. Its been fine since the second replacement for me.
That part for me is funny. Mine went out between 50 & 60k and the battery light never came on. The only reason I knew there was a problem is the lights were dim. When I got home, the battery only had 5 volts in it.
I wouldn't rely on those stupid lights.