120615

The battery is sufficiently charged when the charging current reading is < 25 A. Mercedes Benz C 250 4MATIC (204.085) (CAN) V6-2.5L (272.911) 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:

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

2010 Mercedes Benz C 250 4MATIC (204.085) (CAN) V6-2.5L (272.911) Page 8

Parts

Work units

Attachment

Defect free rubber damper/Valeo refrigerant compressor

2010 Mercedes Benz C 250 4MATIC (204.085) (CAN) V6-2.5L (272.911) Page 9