One problem related to suspension noise has been reported for the 2002 Mercedes Benz S Class. The most recently reported issues are listed below.
In April 2007 I noticed the car dropping and the hissing sound of air when the car was parked and turned off. On April 12, 2007 the car dropped extremely close to the tires and I was forced to it for repair since my car is my livelihood. I was told my rear suspension compressor and front suspension on one side needed replacing along with the r/f strut costing me a total of $2086. 00. I hope that I will be reimbursed for something that could have been very tragic. To this date there still seems to be a problem with suspension as I had to take the car back to the shop in December 2007 and a hose was replaced.