Remove and install sun sensor - AR83.40-P-6720V

MODELS 171.4 with CODE (581b) Convenience automatic air conditioning 

Fig 1: Identifying Sun Sensor Components

Courtesy of MERCEDES-BENZ USA

	Removal/installation
1	Switch off the ignition and remove the transmitter key from the EIS control unit
2.1	Remove Parktronic system (PTS) warning indicator in instrument panel	Only on vehicles with code (220a) Parktronic system (PTS).	AR54.65-P-0003V
3	Release the locking hooks of the center defroster vent (1) using a pulling hook (3) and remove the center defroster vent (1) from the instrument panel (2)	In doing so proceed carefully, as otherwise the locking hooks for the center defroster vent (1) may break.
		Installation:  Make sure that the center defroster vent (1) is correctly seated in the instrument panel (2)	Figure
4	Disconnect electrical connector (4)
5	Release the sun sensor (B32) on the center defroster vent (1) using a suitable screwdriver and remove	Installation:  Make sure that the sun sensor (B32) is correctly seated in the center defroster vent (1)
6	Install in the reverse order

Fig 2: Identifying Pulling Hook (140 589 02 33 00)

Courtesy of MERCEDES-BENZ USA