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

MODEL 211.0/2/6 as of 2.6.08 

MODEL 211.0/2/6 with CODE (809) Model year 2009 

MODEL 219.3 as of 3.3.08 

MODEL 219.3 with CODE (809) Model year 2009 

Shown with code (512) COMAND APS with DVD changer 

Fig 1: Identifying Upper Control Panel Control Unit Remove/Install Components - Shown With Code 512 (1 Of 2)

Courtesy of MERCEDES-BENZ USA

Fig 2: Identifying Upper Control Panel Control Unit Remove/Install Components - Shown With Code 512 (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 from upper control panel control unit (N72/1) in STAR DIAGNOSIS	When replacing upper control panel control unit (N72/1). Transfer staged basic data to the new upper control panel control unit (N72/1).
	Connect STAR DIAGNOSIS and read out fault memory		AD00.00-P-2000-04A
2	Remove ashtray from front center console	Model 211	AR68.20-P-2400T
		Model 219	AR68.20-P-2400TX
3	Unscrew bolts (2) from bracket (3)
4	Pull out bracket (3) forwards until the electrical connectors (4, 6) are accessible	Ensure that the electrical line on the Bluetooth antenna (A2/91) is not pinched, otherwise there is a risk of damaging the Bluetooth antenna (A2/91).
5	Disconnect electrical connector (4)
6	Press lug (5) on electrical connector (6) and detach electrical connector (6)	Ensure that electrical connector (6) is seated properly.
7	Take out bracket (3)
8	Remove bolts (7) and remove upper control panel control unit (N72/1) from bracket (3)
9	Undo bolt (8) and remove cover (1) from upper control panel control unit (N72/1)	When replacing upper control panel control unit (N72/1).
10	Install in the reverse order