Remove/Install Additional Battery Relay - AR54.15-P-2000GQ

MODEL 166 with CODE B03 (ECO start/stop function) 

Fig 1: Identifying Additional Battery Relay Remove/Install Components - Shown On Model 166.024

Courtesy of MERCEDES-BENZ USA

Fig 2: Identifying Additional Battery Relay Remove/Install Components - Shown On Model 166.873

Courtesy of MERCEDES-BENZ USA

	Remove/install
1	Detach ground line from on-board electrical system battery		AR54.10-P-0003GZ
	Notes on battery		AH54.10-P-0001-01A
2	Remove trim from spare tire well		AR68.30-P-4620GQ
3	Detach ground line from additional battery for ECO start/stop function	MODEL 166.8 with CODE B03 (ECO start/stop function)	AR54.10-P-0007GQX
		MODEL 166.0 with CODE B03 (ECO start/stop function)	AR54.10-P-0007GQA
4	Detach electrical feed lines (1a, 1b) from relay for additional battery of ECO start/stop function (K114)
5	Release and disconnect electrical connector (2)
6	Unscrew nuts (3) and remove relay for additional battery of ECO start/stop function (K114)
7	Install in the reverse order