I had to replace my F150 side mirror. The process is just like what @superj mentioned. The only trim to pop should be that triangle piece on the inside of the door.
Yeah, I use normal mode for the hills and grades, on a nice flat highway area, eco mode and cruise is where it's at for the 2.7, excellent fuel economy.
I was wondering if anyone else's was a bit stiff. My wheel doesn't return to center by itself for example making a 90 degree turn from a stop, I have to turn it to center, unlike other vehicles with less stiff steering.
I don't think it's as simple as a bulb replacement. These are sealed units, they don't have the led bulbs like you buy on amazon. You would have to really modify the housing to do it. Attached is what the back of the housing looks like. These lights are around $600 per unit for an ok used...