Why do I get a warning that the driver is tired and should rest on the 2015 F150 Lariet? Sometimes just on local trips, what's the trigger?

 

Crossing the lines too many times.

 

I don't think so and the lane keeper isn't even on. It's just very random.

 

This^^. It senses you weaving in your lane and approaching or crossing the lines too often in a short time. And in my case, when it comes on and displays that coffee cup, it's usually right!

I get the "Keep Hands on Wheel" warning too often. I live where most roads are flat and straight, and my truck easily drives a straight line with little or no steering input. Occasionally I have to jiggle the wheel a little to turn off the warning and let the truck know I do have my hands on the wheel.

 

Those warnings can be turned off. One of the first things I did
Do not remember exactly how to do it. But it is in the menu settings on the gage cluster

 

There's a "Driver Alerts" setting, and then an "Alerts" setting within the Lane Keeping settings. Not sure which it is, so I'm going to try them one at a time to see what they do. I don't need the warning to keep my hands on the wheel, but I want Lane Keeping and the steering wheel vibration to work.