hello all. Recently i had my 4wd actuator replaced. it has been working great until recently it was not engaging. I would turn the dial to 4H and nothing would happen on the display screen. I switched it back multipule time and nothing happned. I finally popped the hood and took the relay switch out and reinserted the switch. After that the truck engaged into 4H. Would it just be a bad relay switch?

2010 F150 5.4 3v Fx4

 

well what kind of truck do you have?

 

^^^^ we can't help you if we don't know your truck

 

2010 F150 5.4 fx4

 

they relay switch may have been loose or getting a poor connection. Wait and see if it does it again before you start replacing stuff

 

I think this is what I'd do.