I had the exact same problem with my 2005 MDX. The sound comes from the long, thin metal bar that runs the length of the seat as part of the seats frame. I discovered that I could stop the rattle by reaching back from the driver's seat and grabbing the bar and putting slight pressure on it. I solved the rattle by cutting a small wooden block and wedged it, vertically, under the bar (between the floor and the bar) right in the middle of the length of the bar. It's been working for over 5 years now.
What is making the rattle sound? If it is a rattle-snake, the rattle is to warn anything the rattle-snake believes is a danger to the snake, to keep away.
A rattle.
Yes. The A is a short A sound, as in rat. (rat-uhl)
The word "rattle" is an example of onomatopoeia as it imitates the sound it represents, like the shaking of a rattlesnake's tail.
The rattle sound of a snake means that it is going to attack.
A rattle snake
The Batteries!
Short
They vibrate their tail about 50 times per second. The loose segments of the rattle then produce a buzzing sound as they rub against each other.
It is called a Rale
There could be hundreds of different things that could rattle. Give us more details. A common rattle is from the catalytic converter. The inside breaks and pieces get into the exhaust and rattle.
Beside