My 2017 with just 42k miles is making very low but audible knocking noise from the front suspension. I check the air struts and they seem to be fine. No leaks and the ride height seems to be leveled.
What’s the best way to troubleshoot this, I’m afraid if I go to dealer for diagnostic, they would just throw parts at it. And if I know which part(s) need to be replaced, perhaps I can do it myself as well.
I was thinking to just replace all upper and lower arms but I’m not sure if I want to blindly throw parts at it as OEM parts are quite expensive.