S-Class (W220) 1999-2006: S 320 CDI, S 320, S430, S 500, S 600

Knocking sound from rear of my car

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Old 10-18-2009, 04:34 PM
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Knocking sound from rear of my car

Hey guys i have no clue whats going on , when i drive on a little bumpy road i'm having some knocking sound coming out from rear of my car. it seems like there is something knocking on the wheels. I was thinking it might be shock but thats not it , cuz car lifts fine with no problem. I think that there is something loose but WHAT ?

Any ideas ?
Old 10-18-2009, 04:35 PM
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2022 S500
maybe something is loose causing your wheels to knock on it when shaken
Old 10-18-2009, 04:40 PM
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well when i drive over 25 sound goes away.
Old 10-18-2009, 06:16 PM
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2002 S430
im having the same problem but im almost sure its my airmatic strut in the rear,it only started doing this after i did the brakes on the car the rear sway bar end links are right in line with the top bolt to remove the caliper so i had to move the link out of the way but i hope i didnt screw anything while having the car on the lift cause ii notice after a while when i bring the car back down on the floor the front bags are completly on the floor , is that normal is there something i should have done?
Old 10-24-2009, 03:28 AM
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any more ideas ?

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