Wednesday, May 1, 2019

Mercedes-Benz A220 2020 Technical Service Bulletin # LI88_70-P-047993 Date: 090924


Instruments - Electric Folding Outside Mirror Noise



Mercedes-Benz A220 2020 Page 145



ELECTRIC FOLDING OUTSIDE MIRROR MAKES NOISES WHILE OR AFTER EXTENDING OR RETRACTING



Topic Number LI88.70-P-047993



Version 1



Design Group 88.70 Exterior mirrors



Date 09-24-2009



Validity Model series 204 up to VIN A 292 622 with code 500



Model series 204 up to VIN F 347 207 with code 500



Model series 204 up to VIN R 082 306 with code 500



Reason for change



Reason for block



Complaint:



Complaint # 1:



Up to 15.10.2008 with code 500 (for identification, see attachment 2)



At cold temperatures (< 15锟斤拷C), the electric folding outside mirror (code 500) makes creaking noises during the folding sequence.



Complaint # 2:



The electric folding outside mirror (code 500) sporadically makes a persistent whistling noise after reaching the end position for a short time.



Attachments



Cause:



Cause of complaint # 1:



Material paring between coil spring and underside of sliding disk of folding mechanism (see attachment 1)



Cause of complaint # 2:



Brush position of electric motor.



Attachments



Remedy:



Remedy for complaint # 1:



- Please note: In the event of complaints, repair both outside mirrors!



1. Remove outside mirror trim (see WIS references).



2. Grease clawed disk in area of slots (see attachment 1).



3. Drill hole (diameter 3 mm) at a height of 3 cm (see attachment 3).



Mercedes-Benz A220 2020 Page 146



4. Grease the sliding disk. It must be greased with the outside mirror in three positions (folded in, intermediate position and folded out => see



attachments 4 and 5).



5. operate outside mirrors electrically several times (approx. 8 times).



6. Install outside mirror trim (see WIS references).



Remedy for complaint # 2:



1) Reduce energizing time (actuation period) of outside mirrors to 4 s via Xentry Diagnostics (not DAS).



Xentry Diagnostics: Door control units - View (DCU-LF-left or right front door) => Version (DCU-LF - left or right front door) Adaptations =>



Folding in/out of outside mirrors (change of actuation period to 4 s).



NOTE:



Reducing the actuation period to 4 s eliminates 80% of complaints.



2) In vehicles still suffering from complaints after the actuation period is reduced to 4 s, install the mirror frame (frame) with noise-optimized folding



drive 9see parts)



General Information:



In vehicles without code 275 (Memory package), the mirror motor (see Parts) must also be ordered when replacing the mirror frame, as described in



the EPC; - P



*Sufficient for 2 cars, submit as Local Purchase - AFS01294, Qty 1, handling is included



Attachments



Symptoms



Parts



Mercedes-Benz A220 2020 Page 147



Work units



WIS-Reference



Mercedes-Benz A220 2020 Page 148



Validity



Attachment 2: Identification/Production date outside mirror, model series 204



Attachment 1: Cause material paring between coil spring and sliding disk



Attachment 3: Repair solution - Drilling



Attachment 4: Repair solution - Greasing 1



Attachment 5: Repair solution - Greasing 2

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