Disconnect/Connect Battery Ground Line - AR54.10-P-0003LW

Model 205 

Model 213 

Model 253 

Shown on model 213 except code B01 (48V technology) 

Fig 1: Battery Ground Line Components Location - Model 253 (Shown On Model 213 Except Code B01)

Courtesy of MERCEDES-BENZ USA

Shown on model 205.386 except code U98 (LITHIUM-ION STARTER BATTERY (LISB)) up to model year 2019 

Courtesy of MERCEDES-BENZ USA

	Risk of injury  caused by fingers being jammed or pinched when removing, installing or aligning hoods, doors, trunk lid/rear-end door or sliding roof.	No parts of the body or limbs should be within the operating area when the components are moving.	AS00.00-Z-0011-01A
	Risk of fire  /risk of explosion due to short circuit and escaping oxyhydrogen gas. Risk of (burn) injury caused by caustic burns to eyes, skin and mucous membranes from battery electrolyte/mist, short circuit and arcing. Risk of poisoning  caused by swallowing battery electrolyte or absorption of lead through the skin or body orifices. Risk of death  due to voltage U >= 30 V AC and U >= 60 V DC.	No fires, sparks, open flames, or smoking. Wear acid-resistant gloves, clothing, and glasses. Pour battery acid only into suitable and appropriately marked containers.	AS54.10-Z-0001-01A
	General information on handling vehicles with high-voltage on-board electrical system and/or lithium-ion battery and/or gaseous-fuel drive system		AH00.00-Z-0300-01A
	General information on handling vehicles with high-voltage on-board electrical system and/or lithium-ion battery and/or gaseous-fuel drive system		AH00.00-Z-0300-01A
	Notes on battery		AH54.10-P-0001-01A
	Notes on HANDS-FREE ACCESS		AH80.61-P-0001-01A
	Disconnect, connect
1	Open hood.
2	Switch off ignition and store transmitter key outside of transmission range (min. 2 m).	All electrical consumers must be switched off. Otherwise they or the on-board electrical system battery (G1) may be damaged when disconnecting/connecting the ground line (3).
3.1	Expose on-board electrical system battery (G1) in trunk or load compartment.	Model 205 (except 205.012/013/047/053/054/147/212/213/247/253) with code B01 (48V technology) Model 205.012/047/147/212/247 Model 205.08/38 except code B01 (48V technology) except code U98 (LITHIUM-IONEN-STARTERBATTERIE (LISB)) Model 213, 253 with code B01 (48V technology)
3.2	Remove cover (1) and expose on-board electrical system battery (G1).	Model 205 (except 205.012/013/047/053/054/08/147/212/213/247/253/38) except code B01 (48V technology) Model 205.013/053/054/213/253 Model 205.08/38 with code U98 (LITHIUM-IONEN-STARTERBATTERIE (LISB)) except code B01 (48V technology) Model 213, 253 except code B01 (48V technology)
		Model 205 (except 205.012/013/047/053/054/08/147/212/213/247/253/38) except code B01 (48V technology) Model 205.013/053/054/213/253 Model 205.08/38 with code U98 (LITHIUM-IONEN-STARTERBATTERIE (LISB)) except code B01 (48V technology)	AP83.00-P-8381B
		Model 213, 253 except code B01 (48V technology)	AP83.00-P-8381C
4	Disconnect charger of on-board electrical system battery (G1).	When an external charger is connected.
5	Disconnect diagnostic unit.	If a diagnostic device is connected.
			AD00.00-P-2000-04B
6	Undo nut (2) and remove ground line (3) from negative pole of on-board electrical system battery (G1).	Model 205, 213, 253 with code B01 (48V technology) The 48 V on-board electrical system switches off 12 V on-board electrical system support 10 s after disconnection of the ground line (3). Nut, electrical line to negative terminal/positive terminal of on-board electrical system battery	*BA54.10-P-1004-01A
7	Using a diode test lamp, check on-board electrical system for voltage between positive line of on-board electrical system battery (G1) and disconnected ground line (3).	Model 205.012/013/047/053/054/147/212/213/247/253 Model 213.016/050/053/054/216 Model 253.311/353/354/911/953/954 If the diode test lamp lights up, the on-board electrical system is still active because of a defect in the electrical system. If the diode test lamp lights up, ↓ Detach ground line from additional battery and check the on-board electrical system after completing the work. Model 205.012/013/047/053/054/147/212/213/247/253	AR54.10-P-0007LW
		Model 253.311/353/354/911/953/954 Model 213.016/050/053/054/216	AR54.10-P-0007LHV
8	Connect in reverse order.
	Check
9	Check time display.	If there is a problem, ↓ set proper time.