Hey scotty, My name is Ghaith I have a 2016 mustang v6 convertible, I parked it for about 2 weeks, I had to travel to Chicago but when I came back I've noticed weird hacking/ almost like knocking/ sound comes out of the back when I steer, it feels like it's in the back wheels it's really bad when the car is cold but when it worms up it gets a little better but never go's away, I took the back breaks off cleaned them and lubed it up like in your videos, i couldn't press back the calipers tho.. For some reason it was too hard almost like it's jammed.. It might be it.. Idk how to unjamm it, or I could be the differential since I just got the oil replaced at the dealer.. The other thing I have the triangle windows won't close completely I have to always pull them shut.. How to fix that. .Thank you sir God bless you I always enjoy watching your videos..
I'm afraid the place that did your differential may not have refilled it/put enough in/used the correct fluid. If it's making noise, it will wear and/or be damaged quite quickly.
When you put in new brake pads they are thicker than the old, worn ones. With the anti-lock braking system on your car, it's fairly complex to push the caliper pistons back into place. I'd recommend you take it to a mechanic (right away, please) to have them put right - few things are more important than working brakes, especially if you don't have really good medical insurance. Have them make sure the differential has a suitable amount of the right lube in it (and take the receipt to the place that screwed it up to get a refund.)
As far as the window, start by spraying some silicone spray into the rubber channels so that they can move more freely.
caliper is probably seized. It should be replaced.
