Remove/install upper control panel control unit - AR54.21-P-1262TX

MODEL 219.3 up to 2.3.08 except CODE (809) Model year 2009 

Shown with code (819) CD changer 

Fig 1: Identifying Upper Control Panel Control Unit Remove/Install Components - Shown With Code 819 (1 Of 2)

Courtesy of MERCEDES-BENZ USA

Fig 2: Identifying Upper Control Panel Control Unit Remove/Install Components - Shown With Code 819 (2 Of 2)

Courtesy of MERCEDES-BENZ USA

	Remove/install
	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
1	Buffer basic data of upper control panel control unit (N72/1) in STAR DIAGNOSIS	When replacing upper control panel control unit (N72/1). Transfer basic data from STAR DIAGNOSIS to upper control panel control unit (N72/1).
	Connect STAR DIAGNOSIS and read out fault memory		AD00.00-P-2000-04TX
2.1	Remove center stowage compartment.	On vehicles without code (819) CD changer	AR68.10-P-1620TX
2.2	Remove CD changer	On vehicles with code (819) CD-changer	AR82.64-P-7508TX
3	Unclip electrical connector (10) from bracket (1)	On vehicles without code (819) CD changer
4	Unclip bracket (1) from housing (2) and remove	On vehicles without code (819) CD changer
5	Undo bolts (3) and detach UCP [OBF] carrier open and close motor (M8) from lever (4) of housing (2)	On vehicles without code (819) CD changer The meshing of the shaft (5) must engage with the lever (4) of the housing (2).
6	Open cover (6) all the way	On vehicles without code (819) CD changer
7	Remove bolts (7)
8	Detach cover (8) far enough from the lid (6) to enable access to the electrical connectors (9)
9	Detach electrical connectors (9) and remove the cover (8) from the lid (6)
10	Remove upper control panel control unit (N72/1) from cover (8)	The upper control panel control unit (N72/1) is bolted on using three bolts to the cover (8).
11	Install in the reverse order