Remove/install housing for fuse and relay box - AR54.15-P-1259RT

MODEL 251

Engine compartment, right front

Fig 1: Identifying Fuse And Relay Box Housing Remove/Install Components - Shown On Model 251.075

Courtesy of MERCEDES-BENZ USA

Illustrated on model 251.075

Fig 2: Identifying Fuse And Relay Box Housing Remove/Install Components - Shown On Model 251.075

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
1	Disconnect battery ground cable		AR54.10-P-0003RT
2	Detach lock (1) and remove the cover of the fuse and relay box (2)
3	Pull cable ducts (3) out of housing for fuse and relay box (4)
4	Detach fuse and relay box (5)	Detach from mountings (arrows A).
5	Pull fuse and relay box (5) out of housing for fuse and relay box (4)	Carefully place fuse and relay box (5) to one side.
6	Remove housing for fuse and relay box (4)	Disengage retaining lug (6) of coolant expansion tank from mounting (arrow C) on housing for fuse and relay box (4) and then pull housing for fuse and relay box (4) upward out of engine compartment. Make sure that the two rubber guides (7) are fitted correctly. Install housing for fuse and relay box (4) by inserting its two pilot studs into rubber guides (7), and then engage retaining lug (6) of coolant expansion tank in mounting (arrow C).
7	Install in the reverse order
8	Perform basic programming		AR00.19-P-0200RT