What could cause this? It's my friends car, she said it just suddenly quit working and the light came on, so she cut the car off then back on and it worked a little better enough to get her home...Its a 2004 Explorer she thinks its a V6, I havent had a chance to go look at it yet, she just called me, so I dont know all the exact details...Let me know what other info you would need...Thanks for any help you guys can be.

 

Broken serp belt?