Retrofit rear volume control - AN82.62-P-0003SX

MODEL 221.0##/1## 1# except CODE (864) Rear entertainment system except CODE (406) Multicontour seats in rear as of model year 2008

Fig 1: Identifying Retrofit Rear Volume Control Components

Courtesy of MERCEDES-BENZ USA

	Remove
1	Remove left front seat
			AR91.10-P-1000SX
2	Remove center console
			AR68.20-P-2000SX
3	Remove front central operating unit control unit	Front central operating unit control unit (A40/9) must be replaced with new front central operating unit control unit (A40/9) with function for rear volume control.
			AR54.21-P-0500SX
	Connect STAR DIAGNOSIS and read out fault memory		AD00.00-P-2000-04A
4	Remove left rear seat backrest
		Model 221.0 with CODE (223) Rear bench seat with electrically adjustable outer seats with PRE-SAFE positioning function for outer seats and outer head restraints Model 221.1 with CODE (223) Rear bench seat with electrically adjustable outer seats with PRE-SAFE positioning function for outer seats and outer head restraints Model 221.1 with CODE (224) Individual rear seats design, except CODE (Z07) Top protection.	AR91.12-P-1620SX
		Model 221.0 except CODE (223) Rear bench seat with electrically adjustable outer seats with PRE-SAFE positioning function for outer seats and outer head restraints Model 221.1 except CODE (223) Rear bench seat with electrically adjustable outer seats with PRE-SAFE positioning function for outer seats and outer head restraints Model 221.1 except CODE (224) Design of individual rear seats.	AR91.12-P-1620SY
5	Remove stowage tray in rear center armrest
6	Loosen carpeting and open cable ducts	Left.
7	Remove trim in trunk	Except right side coverings.
		Model 221.1 except CODE (Z07) Top protection.	AR68.30-P-4600SX
	Install
8	Install central operating unit control unit in center console	New front central operating unit control unit (A40/9) with function for rear volume control.
9	Retrofit volume control	Model 221.0/1 with code (406) Rear multicontour seats.	AN82.62-P-0003-01SX
9	Retrofit volume control	Model 221.0/1 without code (406) Rear multicontour seats.	AN82.62-P-0003-01SY
10	Retrofit volume control wiring harness		AN82.62-P-0003-02SX
11	Add special equipment to the vehicle data card and to the online vehicle data card	Only codes that were retrofitted, code X301 Rear volume control.

PARTS ORDERING NOTES

Part no.	Designation	Quantity
HKW 221 820 U 017	Rear volume control housing for vehicles without code 406	1
HKW 221 820 U 013	Rear volume control housing for vehicles with code 406	1
HKW 221 870 U 001	Volume control switch block	1
HKW 221 870 U 000	Central operating unit for vehicles without code 386/388/494/498	1
HKW 221 870 U 002	Central operating unit for vehicles with code 386/388/498	1
HKW 221 870 U 003	Central operating unit for vehicles with code 494	1
HKW 221 820 U 011	Rear volume control wiring harness	1
HKW 221 820 U 015	Volume control feed line wiring harness	1
N072581 000302	Fuse link (5 amps)	1