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

MODEL 117, 156, 246 up to model year 2015 with CODE B03 (ECO start/stop function) 

MODEL 176 up to model year 2015 with CODE B03 (ECO start/stop function) 

MODEL 242 with engine 270 up to model year 2015 with CODE B03 (ECO start/stop function) 

Shown on model 246 

Fig 1: Identifying Additional Battery Relay Remove/Install Components - Shown On Model 246

Courtesy of MERCEDES-BENZ USA

	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Remove/install
1	Disconnect ground line at the on-board electrical system battery		AR54.10-P-0003NKB
2	Remove the auxiliary battery		AR54.10-P-0007NKB
3	Detach fuse box in vehicle interior on passenger side		AR54.21-P-1255-10NKB
4	Unclip potential distributor (5) from battery box (1)	The number of potential distributors (5) depends on the equipment installed.
5	Unclip electrical connection (4) from battery box (1)
6	Unclip retaining clip (2) of positive line from battery box (1)
7	Unscrew nuts (3) of battery box (1)
8	Remove battery box (1) until ECO start/stop function additional battery relay (K114) is accessible
9	Unclip ECO start/stop function additional battery relay (K114) from brackets (arrows) of battery box (1) and remove
10	Separate electrical connection (8) at ECO start/stop function additional battery relay (K114)
11	Unscrew nuts (6) from ECO start/stop function additional battery relay (K114) and remove positive lines (7)	Nut, positive line to fuse and relay module in interior	*BA54.15-P-1003-01I
12	Install in the reverse order