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E-Class (W211) 2003-2009


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Old 09-26-2008, 06:51 PM   #1
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Rear end clunk when over speed bump

I have 2005 E320 with air matic suspension every time I go over speed bump the rear of vehicle makes loud clunk noise.....Mercede dealer has put new shock absorbers and air springs on rear both side but problem still there.....dealer say's nothing they can do ?? has anyone has same problem ??
my E320 sounds like 20 years old Honda !! any help thanks
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Old 09-26-2008, 08:02 PM   #2
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Completely normal.

http://www.mbworld.org/forums/showth...ight=dead+body
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Old 09-30-2008, 01:24 AM   #3
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Thanks for the info but my E320 is back to Mercedes dealer tomorrow for rear end noise repair may be they can find a dead body in my trunk this time ( I hope ) this is the third time for this same problem but air matic on 211 is been few years (five years) after five years they just found out that is nomal.......MMMmm ? hard to believe we will see what happens
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Old 11-22-2008, 11:51 PM   #4
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it is apparantly normal noise of valves inside the airmatic strut. The bulletin is
P-B-32.22/48
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Old 11-23-2008, 04:03 PM   #5
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Thia may sound dumb - but is there anyway that the noise could be coming from the spare tire in the trunk ???
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Old 11-23-2008, 04:12 PM   #6
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it is apparantly normal noise of valves inside the airmatic strut. The bulletin is
P-B-32.22/48
http://www.mbworld.org/forums/2349796-post1.html
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Old 12-08-2008, 12:08 AM   #7
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It may also be the rear headrests. I noticed when you release them from the up position, they make an obvious bump sound when they hit. Maybe going over speed bumps creates some lift on the headrests and they make a slight sound. How fast are you going over the bumps? Maybe try having someone in the back hold the headrest down, or at least sit back there to hear where the noise originates. Thoughts?
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Old 12-08-2008, 01:21 AM   #8
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It may also be the rear headrests. I noticed when you release them from the up position, they make an obvious bump sound when they hit. Maybe going over speed bumps creates some lift on the headrests and they make a slight sound. How fast are you going over the bumps? Maybe try having someone in the back hold the headrest down, or at least sit back there to hear where the noise originates. Thoughts?
Leave the rear headrests up & locked & see if you get the bump noise. If no noise, then the headrests were at fault. Putting someone in the rear holding headrests down changes the load characteristics of the car so the test isn't valid when performed that way.
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Old 12-08-2008, 11:07 PM   #9
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Good point.
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Old 12-11-2008, 11:42 AM   #10
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it could also be that cover on top of the spare. if you ahve nothing in your trunk, theres nothing stopping the main cover from lifting up and closing after going over a bump.
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Old 12-11-2008, 01:15 PM   #11
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Normally the smell of the dead body in the trunk bothers me more than the noise....
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Old 12-15-2008, 03:43 PM   #12
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Normally the smell of the dead body in the trunk bothers me more than the noise....
That might be true but on ours having the rear of the car lower to the bottom of the suspension to load makes it easy. We just ignore the little car in the FSS with the arrow on the bottom as it levels right out when we start up. However when we take it to the dealer, I always get "could not duplicate problem" and the little car with the arrow under it in the FSS doesn't show up until I drive it home. Normally on the way home it reappears. So Guess I will ignore it until the read doesn't level,, then call the tow truck, and have it warranty repaired.

If there were a body in the trunk they might find it.
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Old 12-15-2008, 03:43 PM
 
 
 
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bump, bumps, c6, differential, end, goingover, hit, making, mercedes, noise, rear, speed, spring, trunk, vehicle



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