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

MODELS 171.4 with CODE (523) Radio MB Audio 20 with CODE (525) MB Audio 50 APS radio with CODE (535) Audio 20 radio CD, USA 

Shown on vehicle with code (525) MB 

Audio 50 APS radio 

Fig 1: Identifying Radio Components - Shown On Vehicle With Code (525) MB

Courtesy of MERCEDES-BENZ USA

	Remove/Install
1	Remove upper control panel control unit		AR54.21-P-1262V
2	Remove stowage compartment or beverage holder		AR68.10-P-1600V
3	Remove bolts (1)
4	Withdraw radio (A2) or radio and navigation unit (A2/56) from the center console (2) and tilt downwards until the electrical connector (3) and the fiber optical cable connector (4) are accessible	Installation:  Check that the radio (A2) or radio and navigation unit (A2/56) is correctly seated in the fixtures (arrow).
5	Separate electrical plug connection (3)
6	Disconnect fiber optical cable connector (4)
7	Cover up the fiber optical cable connector (4)
8	Install in the reverse order
9	Perform a function check on the radio (A2) or radio and navigation unit (A2/56)