I have a 2006 Hyundai Sonata that has recently started making a noise coming from the front passenger side. It seems like the springs, since every time I hit a bump I hear that mournful squeak. But here's the interesting part -- as the car warms up, the noise gets quieter. First thing in the morning though, it is awful. Every movement of the car causes it to squeak. I brought it into several repair shops. The first guy didn't hear it. I might go back if he changes the battery in his hearing aid. The other two shops at least heard it, but said it is normal. THe last one said that the springs are coated with something that just wears out over time.