S-Class (W221) 2007-2013: S 320 CDI, S 350, S 450, S 500, S 550, S 420 CDI, S 600

Howling noise coming from front end

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Old 05-18-2010, 12:00 PM
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08 S550 4matic
Howling noise coming from front end

on my 08 S5504. The dealer has changed the front differential and put new michelins on the car. Still have the howling noise. Does anyone know if there is a sevice bulletin for this or have any idea what it might be? Some help would be greatly appreciated.
EZ

Last edited by EZEC; 05-18-2010 at 12:55 PM.
Old 05-19-2010, 10:31 AM
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08 S550 4matic
Changing the drivers side front wheel bearings Friday. We are grasping at straws here...

Anyone got any idea's?
Old 05-19-2010, 05:34 PM
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'71 Pinto
P-B-28.00/07a FEB08 addresses your concern furthermore, EPC (MB parts catalog) shows front drive shafts installed at production have been replaced this may resolve your problem. PM your email address and VIN and I will forward DTB copy along with VIN specific EPC documentation.
Old 05-19-2010, 09:47 PM
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08 S550 4matic
PM sent

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