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

Model 257 

Model 290 

Shown on model 257 except code B01 (48V technology) 

Courtesy of MERCEDES-BENZ USA

	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
	Risk of injury  . Moving parts can pinch, crush or, in extreme cases even sever extremities.	No parts of the body or limbs should be within the operating area of mechanical components when moving components.	AS00.00-Z-0009-01A
Notice	General information on vehicles with high-voltage on-board electrical system and/or lithium-ion battery and/or gaseous-fuel drive system as well as personal protective equipment		AH00.00-Z-0300-01A
Notice	Notes on battery		AH54.10-P-0001-01A
	Notes on HANDS-FREE ACCESS		AH80.61-P-0001-01A
	Remove/install
1	Switch off ignition and store transmitter key outside of transmission range (min. 2 m).	All electrical consumers must be switched off. Otherwise, they may be damaged when the ground line (1) is disconnected/connected.
2.1	Remove dust filter with air duct segment.	Model 257, 290 except code B01 (48V technology)	AP83.00-P-8381C
2.2	Remove spare wheel well trim.	Model 257, 290 with code B01 (48V technology)
		Model 290 with code B01 (48V technology)	AR68.30-P-4620FRX
		Model 257 with code B01 (48V technology)	AR68.30-P-4620FR
3	Disconnect charger of on-board electrical system battery (G1).	When an external charger is connected.
4	Disconnect diagnostic unit.	If a diagnostic device is connected.
			AD00.00-P-2000-06FR
5	Unfasten nut (2) and remove ground line (1) from negative pole of on-board electrical system battery (G1).	Model 257, 290 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 (1). Nut, electrical line to negative terminal/positive terminal of on-board electrical system battery	*BA54.10-P-1004-01A
6	Connect in reverse order.
	Check
7	Check time display.	If the time is incorrect, ↓ set proper time.