Rchalk

At somewhere around 50,000 miles, my Edge suddenly has excessive noise from the engine. It is most severe around 2200 RPM, and increases while working harder, such as climbing a hill. There is a "HUM" at that engine speed, which seems to be where something is resonating, but at all speeds, there is a very mechanical-sounding noise whenever the engine is working harder, such as accelerating from a stop. Engine performance seems normal, and transmission behaves OK. I have looked at exhaust mounts, and as much as I can at engine and transmission mounts, but can't see anything obvious. Anyone have any suggestions? I could create and post a recording if that might help...

I have noticed a clicking noise at the right front corner of the car (2017 3.5L) if I start up from a stop with the wheels turned about half-lock to the left. Does not occur on right turn from stop, and seems only to be noticeable when cooler temperature, below 40-45 degrees. I have checked the obvious like lug nuts. Is this a sign of an impending failure of a CV joint or similar? Is there a lubricant I should be checking? Thanks for your help.

I have a 2017 Edge with factory HID headlights. I am at 5 years old, and 70,000 miles. I read that these lamps do lose some brightness over time, and I have no way to measure that, so I am looking for others experiences or recommendations as to whether I should replace the bulbs at this point. Opinions or observations? Thanks.

Thank you for the detailed explanation. However, the situation I describe is not a function of ambient lighting. I live in a rural area, with winding, 2-lane roads, and on those I experience almost instant high-beams when I meet an oncoming vehicle. The high-speed response is on a 4-lane divided highway, with very little traffic in the evening, so many times it is completely dark. I am well aware of the effects of lighted signs, etc., that may mimic headlights or taillights. Thinking about this, I will have to check if it is affected by traffic behind me. I suppose a small amount of light could be reflected by the inside of the windshield, and find its way back to the camera in the mirror. thanks again.

I have a 2017 Edge Titanium with auto-dimming HID headlamps. I have noticed that a lower speeds, the high-beams activate almost immediately after passing an oncoming car, but at higher speeds like 65-70 MPH, it takes almost 4 seconds. This seems counterintuitive to me, as faster, longer visibility is more important at higher speeds. What are your thoughts?