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Remove/install additional battery relay - AR54.15-P-2000CY

MODEL 204.9 with CODE B03 (ECO start/stop function) 

Fig 1: Identifying Battery Relay Remove/Install Components
G09983726Courtesy of MERCEDES-BENZ USA
REMOVINGINSTALLING Remove/install     
1 Detach ground line of on-board electrical system battery   AR54.10-P-0003CW 
2 Disconnect ground line of ECO start/stop function additional battery   AR54.10-P-0007CY 
3 Remove cover (1)    
4 Remove mounting nuts (2) and remove relay for additional battery for ECO start/stop function (K114)    
5 Unscrew nuts (3) and remove electrical line (4) TORQUE SPECIFICATION
MODEL 204.9
with CODE 411 (6-speed manual transmission)
MODEL 204.9
with CODE 423 (Automatic five-speed transmission (NAG))
MODEL 204.9
with CODE 427 (7-speed automatic transmission)
*BA54.15-P-1008-01A 
6 Unscrew nut (5) and remove electrical lines (6) TORQUE SPECIFICATION
MODEL 204.9
with CODE 411 (6-speed manual transmission)
MODEL 204.9
with CODE 423 (Automatic five-speed transmission (NAG))
MODEL 204.9
with CODE 427 (7-speed automatic transmission)
*BA54.15-P-1008-01A 
7 Disconnect electrical connector (7)    
8 Install in the reverse order    
FUSE AND RELAY BOX

Number Designation MODEL 204 with CODE 411 MODEL 204 with CODE 423, MODEL 204 with CODE 427
BA54.15-P-1008-01A Nut, positive line to relay for additional battery M6 Nm 5 9