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Disconnect/connect battery ground line - AR54.10-P-0003EW

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MODEL 207, 212, 218 

MODEL 207, 218, MODEL 212 (except 212.072 up to model year 2011) except CODE ME04 (Mild-hybrid drive), shown on MODEL 212 

Fig 1: Battery Ground Line Remove/Install Components
G09976886Courtesy of MERCEDES-BENZ USA

Shown on MODEL 212.072 up to model year 2011 

Fig 2: Battery Ground Line Remove/Install Components - Shown On Model 212.072
G09976887Courtesy of MERCEDES-BENZ USA

Shown on MODEL 212.0 with CODE ME04 (Mild hybrid drive) 

Fig 3: Battery Ground Line Remove/Install Components - Shown On Model 212
G09976888DANGERDANGERNOTESIMPORTANTIMPORTANTNOTESINSTALLATION IMPORTANTTORQUE SPECIFICATIONINSPECTINSTALLATION IMPORTANTCourtesy of MERCEDES-BENZ USA
DANGER Risk of injury  caused by fingers being jammed or pinched when removing, installing or aligning hoods, doors, trunk lid/rear-end door or sliding roof. No parts of the body or limbs should be within the operating area when the components are moving. AS00.00-Z-0011-01A
DANGER Risk of explosion  from explosive gas. Risk of poisoning and caustic burns  from swallowing battery electrolyte. Risk of injury  through burns to skin and eyes from battery acid or when handling damaged lead-acid batteries No fires, sparks, open flames or smoking. Wear acid-resistant gloves, clothing and glasses. Only pour battery acid into suitable and appropriately marked containers. AS54.10-Z-0001-01A
NOTES Notes on battery   AH54.10-P-0001-01A
IMPORTANT Notes on AGM battery   AH54.10-P-0002-01A
IMPORTANT Notes on sensor system for trunk lid opening/closing   AH80.61-P-0001-01A
  Disconnect, connect     
1 Switch off all electrical consumers NOTES All electrical consumers must be switched off. Otherwise they may be damaged when the ground line (6) is connected/disconnected.  
2.1 Switch off ignition and remove transmitter key from electronic ignition lock control unit MODEL 207, 212, 218
without CODE 889 (KEYLESS-GO)		  
2.2 Switch off ignition and remove transmitter key or KEYLESS-GO start/stop button from electronic ignition lock control unit MODEL 207, 212, 218
with CODE 889 (KEYLESS-GO)		  
3.1 Open engine hood MODEL 207, 218
MODEL 212 (except 212.072)
without CODE ME04 (Mild hybrid drive)
MODEL 212.072
as of model year 2011		  
MODEL 207
MODEL 212 (except 212.072)
without CODE ME04 (Mild hybrid drive)
MODEL 212.072
as of model year 2011		 AR88.40-P-1000EW
3.2 Open luggage compartment lid MODEL 212.0 (except 212.072), 212.1 with CODE ME04 (Mild hybrid drive)
MODEL 212.072
up to model year 2011		  
3.3 Open liftgate MODEL 212.2
with CODE ME04 (Mild hybrid drive)		  
4.1 Unclip clamps (1) and remove air duct (2) MODEL 207, 218
MODEL 212 (except 212.072)
without CODE ME04 (Mild hybrid drive)
MODEL 212.072
as of model year 2011
INSTALLATION IMPORTANT Check that air duct (2) is seated correctly.		  
4.2 Open luggage compartment floor cover MODEL 212.0 (except 212.072), 212.1 with CODE ME04 (Mild hybrid drive)
MODEL 212.072
up to model year 2011		  
4.3 Open cargo space floor MODEL 212.2
with CODE ME04 (Mild hybrid drive)		  
5 Remove bracket for vehicle tool kit (7) MODEL 212
with CODE ME04 (Mild hybrid drive)		  
6 Remove spare wheel well paneling (3) MODEL 212 (except 212.072)
with CODE ME04 (Mild hybrid drive)
MODEL 212.072
up to model year 2011		  
7 Unfasten nut (5) and remove ground line (6) from negative terminal of on-board electrical system battery (G1) TORQUE SPECIFICATION Nut, battery cable to on-board electrical system battery negative terminal/positive terminal *BA54.10-P-1006-01F 
INSPECT Check     
8 Using a diode test lamp, check the electrical system for voltage between the positive line of the on-board electrical system battery (G1) and the disconnected ground line (6) MODEL 207
with CODE B03 (ECO start/stop function)
MODEL 212
with CODE B03 (ECO start/stop function)
MODEL 212
with CODE ME04 (Mild hybrid drive)
MODEL 218
with CODE B03 (ECO start/stop function)
without CODE 4U7 (Start/stop voltage dip protector)
If the diode test lamp lights up, the on-board electrical system is still active because of a defect in the electrical system. In this case:
Disconnect ground line from additional battery for ECO start/stop function.		  
MODEL 207
with CODE B03 (ECO start/stop function)		 AR54.10-P-0007EC
MODEL 212
with CODE B03 (ECO start/stop function)
MODEL 212
with CODE ME04 (Mild hybrid drive)
MODEL 218
with CODE B03 (ECO start/stop function)
without CODE 4U7 (Start/stop voltage dip protector)
INSTALLATION IMPORTANT Clear defect on electrical system.		 AR54.10-P-0007ES 
9 Connect in the reverse order    
10 Set time For vehicles without navigation.  
BATTERY

Number Designation MODEL 207 MODEL 212
BA54.10-P-1006-01F Nut, battery cable to on-board electrical system battery negative terminal/positive terminal Nm 6 6
BATTERY

Number Designation MODEL 218
BA54.10-P-1006-01F Nut, battery cable to on-board electrical system battery negative terminal/positive terminal Nm 6
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