I have a '02 S430 and the airmatic pump is very very noisy (rattling sound and vibrations). I check it and there are 3 rubber bushing with spring on each, screws are tight, how can you get rid of the noise? Plus it always running for about less than a minute after starting in the morning but the car does not drop, it maintains the height. I check the upper part of the strut, use soap, no leak, the car does not drop at all, no messages on the dash board. Do you know where is the relay located? Can you please help me, I am new to this forum and I need help please. Thank you.