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2020 Mercedes Benz Truck ML 350 Technical Service Bulletin # LI32-22_P-0514412 Date: 111220

2020 Mercedes Benz Truck ML 350 Technical Service Bulletin # LI32-22_P-0514412 Date: 111220



Suspension - Thump Noise From Front Axle On Uneven Roads



Thumping noise from area of front axle when driving on uneven roads



Topic number LI32.22-P-051441



Version 2



Design group 32.22 Air suspension



Date 12-20-2011



Validity Model series 164 with code 489 (AIRMATIC) except AMG vehicles in VIN range between 164### #A 584636 and 164### #A 682631



Reason for change Remedy updated: Part number without Index 39



Complaint:



Thumping noise from area of front axle when driving on uneven roads



Cause:



Play in the torsion bushing of the air suspension strut on the front axle causes noise when driving on uneven roads



The noise only occurs in vehicles in the VIN range 164 ### #A 584636 to 164 ### #A 682631.



Remedy:



Replace air suspension strut.



Determine part number as per EPC.



Temporarily the part number was listed as ES1 39 for differentiation purposes - ES1 has now been deleted again.



2020 Mercedes Benz Truck ML 350 4MATIC (164.186) V6-3.5L (272.967) Page 64

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