(Disconnect/Connect Battery Ground Line - AR54.10-P-0003LWO)

Model 238 

Shown on model 238.### 1# except code B01 (48V technology) (On-board electrical system battery (G1) in engine compartment) 

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
	Notes on battery		AH54.10-P-0001-01A
	Remove/install
1	Switch off ignition and store transmitter key outside of transmission range (at least 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 238 except code B01 (48V technology)
			AP83.00-P-8381C
2.2	Remove trunk floor and trunk recess cover	Model 238 with code B01 (48V technology)
			AR68.30-P-4600LWO
3	Disconnect charger of on-board electrical system battery (G1).	When an external charger is connected.
			AR54.10-P-1130LW
4	Disconnect diagnostic unit.	If a diagnostic device is connected.
			AD00.00-P-2000-06LWO
5	Release nut (2) and remove ground line (1) from negative pole of on-board electrical system battery (G1)	Nut, electrical line to negative terminal/positive terminal of on-board electrical system battery	*BA54.10-P-1004-01A
6	Connect in the reverse order
	Check
7	Check time display	If the time is not correct. ↓ Set time.