Remove/install radio - AR82.60-P-7502TY

MODEL 219.3 as of 3.3.08 with CODE (510) Audio 20 with CD changer with CODE (511) Audio 50 APS with DVD changer with CODE (512) COMAND APS with DVD changer with CODE (523) MB Audio 20 radio with CODE (525) MB Audio 50 APS radio with CODE (527) COMAND APS with single DVD drive (with navigation)

MODEL 219.3 with CODE (809) Model year 2009 with CODE (510) Audio 20 with CD changer with CODE (511) Audio 50 APS with DVD changer with CODE (512) COMAND APS with DVD changer with CODE (523) MB Audio 20 radio with CODE (525) MB Audio 50 APS radio with CODE (527) COMAND APS with single DVD drive (with navigation)

Fig 1: Identifying Radio Remove/Install Components

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 radio (A2) or radio control panel and navigation unit (A2/56) or COMAND operating, display and controller unit (A40/3) in Star Diagnosis	When replacing the radio (A2) or radio control panel and navigation unit (A2/56) or COMAND operating, display and controller unit (A40/3). Transfer buffered basic data to new radio (A2) or new radio control panel and navigation unit (A2/56) or new COMAND operating, display and controller unit (A40/3).
	Connect STAR DIAGNOSIS and read out fault memory		AD00.00-P-2000-04TX
2	Remove upper control panel control unit carrier		AR54.21-P-1262TY
3	Unscrew bolts (1) as far as to the stop
4	Pull radio (A2) or radio control panel and navigation unit (A2/56) or COMAND operating, display and controller unit (A40/3) out of the center console until the electrical connectors (2, 3, 4, 5) on the rear are accessible
5	Disconnect electrical connectors (2, 3, 4, 5) on rear of radio (A2) or radio control panel and navigation unit (A2/56) or COMAND operating, display and controller unit (A40/3)	The electrical connectors (2, 3, 4, 5) may vary depending on the equipment installed. Depending on equipment installed, electrical connectors with fiber optic cable may also be installed. Make sure that the electrical connectors (2, 3, 4, 5) in the radio (A2) or radio control panel and navigation unit (A2/56) or COMAND operating, display and controller unit (A40/3) are correctly locked.
	Notes on avoiding damage to fiber optic cables during repair work	With Media Oriented System Transport (MOST)	AH82.60-P-0001-05TX
6	Install in the reverse order