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

Model 463 

as of model year 2019 

with code EG1 (Auto telephony) 

Fig 1: Telephone Control Unit Components Location - Model 463 As Of Model Year 2019 With Code EG1

Courtesy of MERCEDES-BENZ USA

	Notes on avoiding damage to optical fibers during repair work		AH82.60-P-0001-05AK
	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Remove/install
1	Perform initial startup of the telephone control unit (N123/9).
		When replacing telephone control unit (N123/9).	AD00.00-P-2000-04B
2	Open service flap (1).
3	Disconnect electrical connectors (2).
4	Unclip telephone control unit (N123/9) from service flap (1) (arrows).	When replacing telephone control unit (N123/9).
5	Install in reverse order.