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Home >> Mercedes Benz >> 2020 >> S560e >> Repair and Diagnosis >> Electrical >> Body Electrical >> Electrical System - Body - 222 Chassis (4 Of 8) >> Testing & Repair >> Remove/Install Telephone Control Unit - AR82.70-P-7380LFM

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

Model 217, 222 

As Of Model year 2018 

With Code 379 (Telephone module with Bluetooth® (SAP profile)) 

Model 222 

As Of Model year 2018 

With Code 855 (Telephony in rear passenger compartment) 

Model 222 

As Of Model year 2018 

With Code 856 (Telephone handset in rear armrest) 

Shown in Model 222 except for code P21 (air quality package) 

G15380539Courtesy of MERCEDES-BENZ USA
Topical note  Notes on avoiding damage to optical fibers during repair work   AH82.60-P-0001-05AK
Topical note  Information on preventing damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
REMOVINGINSTALLING Remove/install     
1 Perform initial startup of the telephone control unit (N123/9) When replacing the telephone control unit (N123/9).  
REFER TO SELF-DIAGNOSTIC SYSTEMS     AD00.00-P-2000-04B
2 Open the glove compartment    
3 Release retaining lugs (2) and pull holder (1) to the rear    
4 Remove the holder (1) with the telephone control unit (N123/9) until the electrical connectors (3) are accessible    
5 Detach electrical connectors (3) IMPORTANT The number of electrical connectors varies depending on the equipment installed.  
6 Remove telephone control unit (N123/9) from the holder (1) When replacing the telephone control unit (N123/9).  
7 Install in the reverse order