my 2015 did the same it was the electric rear clutch! https://www.ebay.com/itm/2007-2017-...em3f81a820ef:g:4lEAAOSwFqNZXp~a:sc:ShippingMethodStandard!34653!US!-1:rk:1:pf:0

 

First a better description of what you are experiencing is needed. Where is the knocking noise coming from? Is it in the front or rear of the vehicle? Is it in the center or to one side? Does it only happen when you have the brake pedal depressed, or does it happen as soon as you release the brake pedal? Does it only happen at low speeds, high speed, while stopped? Does it happen only when turning or at all times?
I once had an issue with another vehicle that after I would release the brake pedal while moving slowly (like in backed up traffic) I would get a very slight knocking noise from the right front wheel area. If I sped up it went away until I duplicated that same scenario. It turned out that one of the new brake pads I had installed was hanging up by one of it's "ears" in the caliper and not retracting all the way back from the rotor. a little grease fixed the issue. But since non of us are there to hear it a detailed description is needed for us to even make a guess.

 

Yes the knocking noise is coming from the passenger rear only when I’m breaking to slow down at any speed. I’ve replaced the break pads twice now. The first time I replaced them the noise went away for a week till I had to make a hard stop due to someone cutting me off then the noise came back I warranty the break pads because it was only a week old and again the noise stared a week later. I’m so very frustrated