Combines 8570 shoe sensor

Mine will do the samething, always seems to do it in the heat of the day. I think it is fine dust, or static electricity interfering with the sensor. I'm probably wrong, what ever causes it I sure would like to find a cure. Neil

I was running my brother's 8570 last week and the shoe senser came on. A couple sqirts of belt dressing on the shoe drive belt solved the problem