Remove/install control and operating unit (MODEL 204 Front control and operating unit) - AR83.40-P-6350CW

MODEL 204 Front control and operating unit 

Shown on model 204.0 up to 28.2.2011 

Fig 1: Identifying Automatic Air Conditioning Control And Operating Unit, Cover And Catch Hook

Courtesy of MERCEDES-BENZ USA

Shown on model 204.0 as of 1.3.2011 

Fig 2: Identifying Screw

Courtesy of MERCEDES-BENZ USA

Illustrated on model 204.9 

Fig 3: Identifying Upper Control Panel Control Unit And Cover

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 the basic data of the automatic air conditioning control and operating unit (N22/7) in STAR DIAGNOSIS	When replacing the automatic air conditioning control and operating unit (N22/7). Installation:  Transfer the buffered basic data onto the new automatic air conditioning control and operating unit (N22/7).
	Connect STAR DIAGNOSIS and read out fault memory		AD00.00-P-2000-04A
2	Move selector lever or gearshift lever to rearmost position	Depending on vehicle equipment.
3	Switch off ignition
4	Remove center air vent	Model 204.0/2 as of model year 2012 /YoM 11 Model 204.3	AR83.10-P-4503CWA
5	Remove radio	with CODE (523) MB Audio 20 radio, With code (510) Audio 20 with CD changer with code (525) Radio MB Audio 50 APS, with code (511) Audio 50 APS incl. DVD changer, With code (527) COMAND APS with single DVD disk drive (with navigation). With code (512) COMAND APS with DVD changer	AR82.60-P-7502CW
6	Unclip cover (6) from upper control panel control unit (N72/1)	Model 204.9
7	Open cover (1)	Only up to 28.2.2011.
8	Unclip covering (2) from dashboard (4) and remove	Only up to 28.2.2011. Carefully release the cover (2) using the long wedge at all four corners. Otherwise the covering (2) can bend or kink in the middle.
		Long wedge	Fig 4
9	Use a suitable screwdriver to release the catch hooks (3) downwards through the openings (arrows) and unclip the automatic air conditioning control and operating unit (N22/7) from the dashboard (4), then pull it out until the electrical connectors (5) are accessible	Only up to 28.2.2011.
10	Release bolts (7) and pull AAC operating unit (N22/7) out of instrument panel (4) until the electrical connections (5) are accessible	Model 204.0/2 as of 1.3.2011 Model 204.3
11	Disconnect electrical connectors (5)
12	Install in the reverse order
13	Teach in and normalize the actuator motors	The actuator motor is taught in via STAR DIAGNOSIS.
	Connect STAR DIAGNOSIS and read out fault memory		AD00.00-P-2000-04A

Fig 4: Identifying Long Wedge (115 589 03 59 00)

Courtesy of MERCEDES-BENZ USA