Saturday, June 15, 2019

Mercedes-Benz A220 2020 Technical Service Bulletin # LI68-10_P-055895 Date: 130411


Interior - Noise Sources on Instrument Panel BR 204



Noise sources on instrument panel BR 204



Topic number L168.10-P-055895



Version 1



Design group 68.10 Instrument panel



Date 04-11-2013



Validity Model series 204



Reason for change



Complaint:



(Numbering in accordance with "Noise source overview.jpg" in attachment)



1. Glove box squeaks/rattles in top left area.



2. Creaking or friction noise in center console area at transition from lower control panel to HVAC control panel.



3. Chatter/noise in area of center air vent/head unit (as of facelift).



4. Creaking/cracking noise in area of combination cover (as of facelift).



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5. Noise from upper area of instrument cluster.



6. Noise in right instrument cluster area.



Attachments



Cause:



Mercedes-Benz A220 2020 Page 454



1. Breakthrough for glove box on crossmember sharp-edged (Attachment 1)



2. Cover of lower control panel makes contact on left side with cover of HVAC control panel (Attachment 2)



3. Lower trim strip of center air vent touches bezel of head unit



4. The material pairing between the chrome rings and the combination cover generates noise at potentially all points of contact (Attachment 4)



5. Relative movement of components to each other (Attachment 5)



6. Improper torque of attachment bolt (Attachment 6)



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Attachments



Remedy:



1. Attach thin layer of felt to suspension at top left of glove box (Attachment 1-2)



2. Apply felt tape to contact points on back side of lower control panel.



3. Attach adhesive pads lined with rubber on lower bar of center air vent (Attachment 3-1 and 3-2)



4. Glue components using hot melt adhesive to each other (Attachment 4-1)



5. Attach felt tape to contact points and designated areas.



6. Tighten bolt and washer assembly to 2 Nm (Attachment 6)



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