Remove/install DC/DC converter - AR54.10-P-1350LFH

MODEL 222.163 

Fig 1: DC/DC Converter 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 high-voltage on-board electrical system		AH54.00-P-0010-01A
	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Evaluation of high-voltage components		AH54.00-P-6500-01SXH
	Remove/install
1	Perform disable for the high-voltage on-board electrical system		AR54.10-P-1150LF
2	Remove trunk floor lining		AR68.30-P-4600LF
3	Remove load compartment well		AR68.30-P-4600LF
4	Disconnect ground line to on-board electrical system battery		AR54.10-P-0003LF
5	Drain high-voltage battery cooling system coolant		AR20.00-P-1147LFH
6	Remove bolt (1)	MODEL 222.163 with CODE ME05 (HYBRID DRIVE 80KW VARIANT (INCLUDING PLUGIN))	*BA54.10-P-1013-02D
7	Remove cover (2)	Make sure that the cover (2) is seated correctly in the major assembly pan.
8	Detach coolant hoses (3) from DC/DC converter control unit (4)	Collect escaping coolant using rags.	AR20.20-P-7441-01RQ
9	Seal off connections on coolant hoses (3) and on DC/DC converter control unit (4) using suitable stop plugs	Record plug	Fig 2
10	Release electrical connector (5) and disconnect from DC/DC converter control unit (4)
11	Release plug for high-voltage on-board electrical system (6) and disconnect from DC/DC converter control unit (4)
12	Remove cap of terminal 30 line self-locking nut (7) from DC/DC converter control unit (4)
13	Detach terminal 30 line (7) from DC/DC converter control unit (4)
	Notes on self-locking nuts and bolts		AH00.00-N-0001-01A
		MODEL 222.163 with CODE ME05 (HYBRID DRIVE 80KW VARIANT (INCLUDING PLUGIN))	*BA54.10-P-1019-02D
14	Detach equipotential bonding line (8) from DC/DC converter control unit (4)	MODEL 222.163 with CODE ME05 (HYBRID DRIVE 80KW VARIANT (INCLUDING PLUGIN))	*BA54.10-P-1017-02D
15	Remove screw/bolts (9)	The front right screw/bolt (9) can only be removed after the DC/DC converter control unit (4) has been pulled toward rear slightly. MODEL 222.163 with CODE ME05 (HYBRID DRIVE 80KW VARIANT (INCLUDING PLUGIN))	*BA54.10-P-1014-02D
16	Remove DC/DC converter control unit (4)
17	Install in the reverse order
18	Start up DC/DC converter control unit (4) using diagnostic system	After replacing DC/DC converter control unit (4) The work procedure for initial startup is available in the following control unit: DC/DC converter control unit (4) In the initial "Control units" menu, select the menu item "Initial startup" under "Adaptations" and perform the complete procedure.	AD00.00-P-2000-04B
19	Disconnect diagnostic system	After replacing DC/DC converter control unit (4)

HIGH-VOLTAGE BATTERY

Number	Designation		MODEL 222 with CODE ME05
BA54.10-P-1013-02D	Screw/bolt, cover to charger	Nm	8

HIGH-VOLTAGE BATTERY

Number	Designation		MODEL 222 with CODE ME05
BA54.10-P-1014-02D	Screw/bolt, DC/DC converter to bracket	Nm	20

HIGH-VOLTAGE BATTERY

Number	Designation		MODEL 222 with CODE ME05
BA54.10-P-1017-02D	Screw/bolt, potential equalization line to DC/DC converter	Nm	9

HIGH-VOLTAGE BATTERY

Number	Designation		MODEL 222 with CODE ME05
BA54.10-P-1019-02D	Self-locking nut, positive line to DC/DC converter	Nm	20

Fig 2: Identifying Record Plug (129 589 00 91 00)

Courtesy of MERCEDES-BENZ USA