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Remove/install vehicle power supply control unit - AR54.21-P-0100T

MODEL 211.0 up to 31.5.06 

Fig 1: Identifying Vehicle Power Supply Control Unit Components (1 Of 2)
G07253581Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Fig 2: Identifying Vehicle Power Supply Control Unit Components (2 Of 2)
G07253582Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
MODIFICATION NOTES

10.8.05 The operation step "Disconnect ground line of additional battery" is deleted  
Attach a cable bridge for bridging negative terminal of battery to vehicle ground has been added 3rd stage
REMOVING Remove     
NOTES Notes on avoiding damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
1 Remove trunk floor covering from trunk.    
2 Remove spare tire cover or spare tire well trim from the luggage compartment IMPORTANT Depending on vehicle configuration.  
3 Connect negative terminal (5) of battery (G1) to ground (circuit 31) using adapter line (6) (arrow) IMPORTANT Use suitable adapter line (6) and alligator clips (7).  
SPECIAL TOOL Figure
4 Disconnect ground cable (1) from battery control unit (N82)    
5 Unscrew bolt (2)    
6 Unscrew bolt (3).    
7 Unplug electrical connector (4) and remove battery control unit (N82)    
INSTALLING Install     
8 Position battery control unit (N82) at installation location and secure with bolt (3)    
9 Tighten screw (2) TORQUE SPECIFICATION *BA54.10-P-1005-01C 
10 Fit ground line (1) to battery control unit (N82) TORQUE SPECIFICATION *BA54.10-P-1004-01C 
11 Remove adapter line (6) with alligator clips (7) SPECIAL TOOL Figure
12 Connect electrical connector (4) to battery control unit (N82)    
13 Install spare tire cover or spare tire well trim IMPORTANT Depending on vehicle configuration.  
14 Insert luggage compartment cover in the luggage compartment    
BATTERY

Number Designation Model 211
BA54.10-P-1004-01C Nut, ground lead to battery control unit M8 Nm 12
BA54.10-P-1005-01C Bolt, battery control unit to body M8 Nm 20
Fig 3: Identifying Electrical Connection Kit (220 589 00 99 00)
G07253583Courtesy of MERCEDES-BENZ OF NORTH AMERICA.