Remove/install main fuse of positive line - AR54.15-P-0051MEV

MODEL 451.390/392/490/492 with ENGINE 780.993 

MODEL 451.391/491 with ENGINE 780.009 

Fig 1: Identifying Main Fuse Of Positive Line Remove/Install Components

Courtesy of MERCEDES-BENZ USA

	Risk of death  when touching components on vehicles with high-voltage on-board electrical system	Do not touch components and open lines of the high-voltage on-board electrical system. Persons who wear electronic implants (e.g. cardiac pacemakers), must not  carry out any work on high-voltage on-board electrical systems.	AS54.00-Z-0001-01A
	Note on the high-voltage on-board electrical system		AH54.00-P-0010-01A
	Note on high-voltage battery		AH54.10-P-0006-01MEV
	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Remove/install
1	Remove transmitter key and mains plug
2.1	Carry out disconnection of high-voltage system	MODEL 451.391/491 with ENGINE 780.009	AR54.10-P-1160MEV
2.2	Connect Star Diagnosis and disconnect HV system	Model 451.390/392/490/492 with ENGINE 780.993
		Print out power disable event log and add to the vehicle file. : Activate high-voltage system.	AD00.00-P-2000-04MCC
3	Disconnect ground line of 12 V battery		AR54.10-P-0003MCC
4	Unclip top cover (2) from bottom cover (1) and remove top cover (2) and bottom cover (1)
5	Unscrew nuts (3) and remove 12 V charge line prefuse (F90)	Replace self-locking nuts (3).
6	Install in the reverse order