Remove/install additional battery - AR54.10-P-0007SXS

MODEL 216, 221 

Shown on model 216 

Fig 1: Identifying Additional Battery Remove/Install Components - Shown On Model 216

Courtesy of MERCEDES-BENZ USA

	Remove/install
	Risk of explosion  caused by escaping oxyhydrogen gas. Risk of injury  caused by caustic burns to eyes, skin and mucous membranes from battery electrolyte (contains diluted sulfuric acid) or metal spatter due to short circuit. Risk of burn injuries  caused by short circuit. Risk of poisoning  caused by swallowing battery electrolyte (contains diluted sulfuric acid) or absorption of lead over the skin or orifices	No fire, sparks, open flames or smoking. Wear acid-resistant gloves and clothing and safety glasses with side guards. Do not place any conductive objects on the battery and avoid any short circuit from battery positive to ground. Only fill liquid battery electrolyte (diluted sulfuric acid) into suitable and appropriately marked containers.	AS54.10-Z-0001-01A
	Notes on battery		AH54.10-P-0001-01A
	Notes on AGM battery		AH54.10-P-0002-01A
1	Switch off all electrical consumers, switch off ignition and remove transmitter key from EIS [EZS] control unit	All the electrical consumers must be switched off, otherwise they may be damaged when unclipping and clipping on the ground line (3).
2	Remove center paneling (1) in trunk		AR68.30-P-4600SX
3	Remove bolt (2) and detach ground line (3) from additional battery for ECO start/stop function (G1/13)		*BA54.10-P-1029-01C
4	Remove cover (4) of positive line (5)
5	Using diode test lamp, check on-board electrical system for voltage between positive line (5) of ECO start/stop function additional battery (G1/13) and a suitable ground point	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 the ground line of the battery (on-board electrical system battery) should be disconnected. See: ↓
		Disconnect/connect battery ground line Cover positive line (5), there is a risk of short circuit! After this the electrical system is to be repaired upon completion of the work carried out.	AR54.10-P-0003SX
6	Unscrew bolt (6) and remove positive line (5)		*BA54.10-P-1029-01C
7	Unscrew nut (8) of bracket (9)
8	Swivel bracket (9) upwards
9	Remove additional battery for ECO start/stop function (G1/13) from battery holder
10	Install in the reverse order

BATTERY

Number	Designation			Model 216	Model 221
BA54.10-P-1029-01C	Bolt, battery cable to battery terminal on additional battery	M6	Nm	5	5