Remove/Install Front AAC/Control And Operating Unit - AR83.40-P-6350GQ

Model 166 Front control and operating unit 

Fig 1: Front AAC /Control And Operating Unit Components Location - Model 166

Courtesy of MERCEDES-BENZ USA

	Remove/install
	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
1	Switch off ignition and remove transmitter key from electronic ignition lock control unit	On vehicles with code (889) Keyless Go: Press keyless go start/stop button repeatedly until ignition is switched off. Remove transmitter key from vehicle and store it in a location beyond its transmission range (at least 2 m).
2	Unclip cover frame (2)		Fig 2
3	Release AAC control and operating unit (N22/7) from upper edge using extraction hook (01)		Fig 3
4	Release AAC control and operating unit (N22/7) at lower edge using long wedge (02) and pull forward out of instrument panel		Fig 2
5	Disconnect electrical connectors (3)
6	Remove automatic Air conditioning control and operating unit (N22/7)
7	Install in the reverse order

Fig 2: Identifying Long Wedge (115 589 03 59 00)

Courtesy of MERCEDES-BENZ USA

Fig 3: Identifying Extraction Hook (140 589 02 33 00)

Courtesy of MERCEDES-BENZ USA