It's possible that the pads could have pieces of metal or gunk  embedded in them.   Last brake job, did you put in OEM or aftermarket? Metallic or organic?   (Organic is softer & quieter, tiny pieces of metal can embed in them and cause squeeking.)

Tell us your car brand, model & year. Then tell us ehat sort of problem(s) are you having with your brakes?   As you have replaced the Master cylinder, can rule that out.   If you step on the break pedal, does it go to the floor? Have you pulled the wheels and checked to see if the wheel cylinders are leaking? Brake hoses leaking? 

May be easier and cheaper to just switch to a Weight-Distributing Hitch. Easily levels the towing vehicle, rides smother and limits sway. My dad and I towed a trailer all over the Midwest back in the 60's with one, worked great. Think it was a Reese. Harbor Freight sells one for less than a two hundred dollar bill. 

They're LED if I'm not mistaken (least that's what is states in the owners manual.) You're probably going to need a service manual and replace the assy.   @HAZ?  

I have a 2015 SEL AWD 3.5L. Was going to be my last car. Owners Manual says RDU fluid doesn't need to be changed until 100K miles. So it wasn't serviced.  Now have 80k miles and bearing area of the pinion shaft forward housing  emits major grating, grinding noise when using a stethascope device to listen to it. In the cabin it is just a noticeable hum which is load / throttle  sensitive. I took it to a dealer when I was out of town and had the fluid changed. $200+ and only a slight change, possibly wishfull thinking. Listening to the web I also seem to be facing a $2K waterpump change around 110- 130K miles and possibly a PTU any time now. It all has me seriously re thinking this Ford thing. My 1st EDGE was a 2008, with same drive train, bought used at 30K miles and driven to 108K miles trouble free. This "new and improved" version is apparently a mistake.   PS: I use it in the desert south west and pacific coast (when AZ gets too hot), it has not been submerged or off roaded, and doesn't tow anything, only occasionally carries more than 2 people, seldom exceeds 80MPH and has been serviced by Ford dealers on the regular factory suggested schedule. What gives and what is recommended?  Rear Difs used to go 200K mi. 

It fit perfectly. I yet have to add the screw that goes through the wheel well. Attached is a picture from the installation, note how it fit tight against the tow hitch.

I would still suspect the harnesses that go to the EPB motors.  The wiring doesn't always break in a visible way, from the checks I performed on mine, they were broken within the wire jacket and cracked within the protective loom.  They can make and break the connection intermittently since the break within the wire jacket, the wiring is still very close together and can reconnect from simply being bent slightly in the right direction.  This type of break can also be the cause of a fault coming and going at random.  Not that the wiring couldn't be failed within the main harness in the vehicle, its just not likely.  I've also seen this type of failure in the front camera harness.

I popped the hood of my 2020 Edge Titanium to clean off the drains, and they were really full of leaves, pine needles and other debris. These drains allow water to stay out of the air intakes at the base of the windshield. I once had a vehicle that also had a flap that directed the water into the drain rather the air intake, and when the flap got jostled somehow, it let rainwater into the intake plenum which then leaked on the passenger side floor. So, I like to keep those drains open.    Anyway, it spending the minute to do this might be worthwhile.

Hey, Thanks for you recommendation, I was looking at the MPC option and it does looks straight forward no complications, and also cheaper, I guess the main difference here is range right?   If I do the Ford OEM parts I'm I right to asume I'll be able to start the car farther than the current key fob that I have today works? and with the MPC I guess I'll have the same range as of today since I'm not changing key fobs?   Thanks

Thanks a lot for pointing  me to this.