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Home >> Mercedes Benz >> 2008 >> E550 Base >> Repair and Diagnosis >> Accessories & Equipment >> Exterior Lights >> Electrical System -- Testing & Repair -- E550 (211.072) >> Testing & Repair >> Remove/install telecommunications control unit - AR82.70-P-7000T

Remove/install telecommunications control unit - AR82.70-P-7000T

MODEL 211.0/2 with CODE (381) CP-Light telephone system with CODE (383) CP-High telephone system with CODE (498) Japan version except CODE (494) USA version 

Fig 1: Removing/Installing Telecommunications Control Unit
G07502864Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
MODIFICATION NOTES

5.7.06 "Disconnect/connect battery ground line" removed
REMOVINGINSTALLING Remove/install     
NOTES Notes on avoiding damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
1.1 Transfer basic data from telecommunications control unit (N112) into STAR DIAGNOSIS and authorize the telecommunications control unit (N112) When replacing the telecommunications control unit (N112) on vehicles with code (383) CP-High telephone system  
    For Germany and Austria on vehicles with code (383) CP-High telephone system. Automatic data transfer AR82.95-P-7000-01TT 
    For Germany and Austria on vehicles with code (383) CP-High telephone system. Manual data transfer (automatic data transfer not possible) AR82.95-P-7000-01T 
REFER TO SELF-DIAGNOSTIC SYSTEMS Connect STAR DIAGNOSIS and read out fault memory   AD00.00-P-2000-04A
2.1 Remove emergency call system antenna splitter (A2/25) On vehicles with code (383) CP-High telephone system or code (498) Japan version AR82.70-P-8953T 
3 Detach electrical connectors on telecommunications control unit (N112) or E-call control unit (N112) IMPORTANT First pull off the white plug, then all the others.
IMPORTANTInstallation:  Lastly, connect the white plug.
 
4 Detach fiber optic cable (1) on telecommunications control unit (N112) or E-call control unit (N112)    
5 Cover fiber optic cable (1)   AR82.95-P-0005-01A 
6 Remove bolts (2)    
7 Using mounting wedges (3) press off the telecommunications control unit (N112) or the E-call control unit (N112) from the carrier plate (4) and remove SPECIAL TOOL Figure
8 Install in the reverse order    
Fig 2: Identifying Wedge Tool (110 589 03 59 00)
G07502865Courtesy of MERCEDES-BENZ OF NORTH AMERICA.