Remove/Install Rear Pre-Fuse Box - AR54.15-P-1340S

Model 223 

Shown with code 503 (Remote-controlled parking) 

Fig 1: Rear Pre-Fuse Box Components Location - Model 223

Courtesy of MERCEDES-BENZ USA

Notice	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Notes on safety-relevant components		AH00.00-Z-0019-01A
	Remove/install
1	Disconnect ground line of battery of 12 V onboard electrical system.		AR54.10-P-0051S
2	Remove side trim in trunk at right.		AR68.30-P-4800SG
		Model 223 with code Z07 (B7 armoring on special protection version)
		Model 223 except code Z07 (B7 armoring on special protection version)	AR68.30-P-4800S
	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
3	Remove nut (1) and remove ground line (2) of secondary 12 V on-board electrical system battery from ground point.	Model 223 with code 200 (Conditionally automated driving) Model 223 with code 503 (Remote-controlled parking)
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 the use of paint scraping nuts on ground connections		AH00.19-P-1000-20A
		Cover connector of ground line (2) in order to prevent an unwanted ground connection. Otherwise there a risk of short circuit when removing the rear pre-fuse box (F150/5).
		Emergency start battery, ground point	*BA00.19-P-1060-01N
4	Remove fuse and relay module in rear and place to one side with the lines connected.		AR54.15-P-0001S
5	Remove electric lines (3) from rear pre-fuse box (F150/5).	The number of electrical lines (3) varies depending on the vehicle equipment. The connections of the electric lines (3) are shape-coded.
		Nut, positive terminal to rear pre-fuse box	*BA54.15-P-1004-01J
6	Remove nuts (4).
7	Remove holder (5) with rear pre-fuse box (F150/5) and turn over.
8	Release and disconnect electrical connector (6).
9	Unscrew screws (7) and remove rear pre-fuse box (F150/5) from holder (5).
10	Install in the reverse order.