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Home >> Mercedes Benz >> 2018 >> SLC43 AMG >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Electrical System, Equipment & Instruments - 172 Chassis - 2 Of 4 >> Testing & Repair >> Remove/Install ECO Start/Stop Function Additional Battery Relay - AR54.15-P-2000W

Remove/Install ECO Start/Stop Function Additional Battery Relay - AR54.15-P-2000W

Model 172 

with Code (B03) ECO start/stop function 

Fig 1: ECO Start/Stop Function Additional Battery Relay Components Location - Model 172 With Code B03
G13847685Courtesy of MERCEDES-BENZ USA
REMOVINGINSTALLING Remove/install    
  Risk of injury caused by backrest suddenly folding forward if release lever is accidentally operated during inspection and repair work When working on the seat, be careful not to accidentally release the backrest mechanism allowing the seat to fold forward. Keep body parts clear of the backrest travel area. AS91.00-Z-0005-01V
1 Move both seats to front position and fold backrests forward    
2 Detach ground line of on-board electrical system battery   AR54.10-P-0003W 
3 Disconnect ground line of ECO start/stop function additional battery   AR54.10-P-0007W 
4 Remove pocket (1)    
5 Unscrew coat hook (2) and plastic nut (3)    
6 Detach rear wall cover (4) at bottom from floor covering until ECO start/stop function additional battery relay (K114) is accessible    
7 Unscrew nut (5) and remove electrical line (6)    
8 Unscrew nut (7) and remove electrical line (8)    
9 Disconnect electrical connector (9)    
10 Unscrew nuts (10) on ECO start/stop function additional battery relay (K114)    
11 Detach ECO start/stop function additional battery relay (K114) from rear wall    
12 Install in the reverse order