Ford - Escape :: 2010 - Knocking Noise From Speaker Area Above Right Side Rear Wheel Well

I purchased a 2010 Escape Hybrid last October. Within a month it would occasionally make knocking noises from the speaker area above the right side (passenger) rear wheel well. It took several visits to the dealer before this noise would "perform" for them. They thought it was the amplifier, so they disconnected the amplifier...it still did it. So they replaced the amplifier ... it still did it, but it changed pitch and frequency.

I have made videos of it for them since it is so erratic it is hard to get it to do it for them. It will go days, weeks or even months without doing it, and then do it consistently for days and weeks. It seems to do it most when the weather is around 40-60 degrees and often when it is damp ... although this is not always the case. It will do it after you turn the car off for up to 30 seconds ... It will do it when you first start the car before you move.

By the way ... my son in law swears it is the little circular thing in the center of a speaker that vibrates back and forth with sound that is "popping". I suggested that to the dealer and they said that would be really surprising ... I told them that whatever it is its going to be surprising!