Remove/Install Telephone Control Unit - AR82.70-P-7380RG

Model 190 

With Code 380 (Car telephony package) 

Fig 1: Telephone Control Unit Components Location - Model 190 With Code 380

Courtesy of MERCEDES-BENZ USA

Topical note	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Remove/install
1	Commission telephone control unit (N123/9).
			AD00.00-P-2000-04B
2	Switch off ignition and store transmitter key outside of transmitter range (min. 2 m).
3	Open glove compartment (1).
4	Release retaining hook (2) using a suitable tool and hold.
5	Pull control unit holder (3) downward at position of retaining hook (2) (arrow A).	Ensure that the retaining hook (2) engages.
6	Pull out control unit holder (3) (arrow B) until the electrical connectors (5, 6) are accessible.	Ensure that all catch hooks are correctly positioned in their mounts in the glove compartment (1).
7	Disconnect electrical connectors (5, 6).
8	Release mounting bracket (4) (arrows C) and remove from control unit holder (3).	When replacing telephone control unit (N123/9).
		If necessary, retract between mounting bracket (4) and control unit holder (3) using a suitable tool.
9	Remove telephone control unit (N123/9) from control unit holder (3).	When replacing telephone control unit (N123/9).
10	Install in the reverse order.