The battery is sufficiently charged when the charging current reading is < 25 A. Mercedes-Benz A220 2020 Technical Service Bulletin # LI83-55_P-0534652 Date:

120615

A/C - Howl, Rattle Noise From Engine Compartment

Howling, rattling noise from engine compartment

Topic number L183.55-P-053465

Version 2

Design Group 83.55 A/C compressor

Date 06-15-2012

Validity Model series 204 and 207 with Valeo refrigerant compressor

Reason for change Model Validity Changed

Complaint:

1. Howling noise from engine compartment.

2. Rattling noise from engine compartment.

Attachments

Cause:

Mercedes-Benz A220 2020 Page 42

1. Wear of rubber damper on Valeo refrigerant compressor.

2. Wear of bearing of belt pulley on refrigerant compressor.

Remedy:

Replacement of belt pulley on refrigerant compressor, see WIS document AR 83.55-P-7685C.

Pay attention to the correct type of refrigerant compressor (Valeo, see picture) and the associated belt pulley diameter (110 mm or 120 mm).

Symptoms

Parts

Work units

Attachment

Defect free rubber damper/Valeo refrigerant compressor

Mercedes-Benz A220 2020 Page 43