Remove/Install DC/AC Converter Control Unit - AR54.21-P-1600MFA

Model 118, 177.0/1, 243, 247 

with code U80 (115 V socket) 

Model 118, 177.0/1, 247 

with code U67 (230 V socket in rear passenger compartment) 

Shown on model 177.0 with code U67 (230 V socket in rear) 

Fig 1: DC/AC Converter Control Unit Components Location - Model 118 With Code U80, U67 (Shown On Model 177.0 With Code U67)

Courtesy of MERCEDES-BENZ USA

	Risk of death  when working on component parts and systems with U >= 30 V alternating voltage (AC) or U >= 60 V direct voltage (DC)	Do not touch damaged or defective live component parts and lines or non-insulated electrical connections and lines.	AS00.00-Z-0035-01A
	Risk of injury  caused by fingers being jammed or pinched when removing, installing or aligning hoods, doors, trunk lid/rear-end door or sliding roof.	No parts of the body or limbs should be within the operating area when the components are moving.	AS00.00-Z-0011-01A
Topical note	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Notes on HANDS-FREE ACCESS		AH80.61-P-0001-01A
	Notes on safety-relevant components		AH00.00-Z-0019-01A
	Remove/install
1	Disconnect the ground line for the on-board electrical system battery (G1).		AR54.10-P-0003MFA
2.1	Remove load compartment floor in trunk.	Model 118, 177.0/1, 243, 247.0/7 with code U80 (115 V socket) Model 118, 177.0/1, 247.0/7 with code U67 (230 V socket in rear passenger compartment) Model 247.6 with code U67 (230 V socket in rear passenger compartment) except code 847 (3rd seat row) Model 247.6 with code U80 (115 V socket) except code 847 (3rd seat row)
2.2	Remove right rear seat of 3rd seat row.	Model 247.6 with code 847 (3rd seat row) with code U67 (230 V socket in rear passenger compartment) Model 247.6 with code 847 (3rd seat row) with code U80 (115 V socket)
			AR91.12-P-0007MFX
3.1	Unclip cover (1) (arrows A) and remove.	Model 118, 177.0/1, 247.0/7 with code U67 (230 V socket in rear passenger compartment) Model 118, 177.0/1, 247.0/7 with code U80 (115 V socket) Model 247.6 with code U67 (230 V socket in rear passenger compartment) except code 847 (3rd seat row) Model 247.6 with code U80 (115 V socket) except code 847 (3rd seat row)
3.2	Remove vehicle tool kit mount.	Model 243 with code U80 (115 V socket)
4	Release and disconnect electrical connectors (2) from DC/AC converter control unit (N24/3).
5	Unclip DC/AC converter control unit (N24/3) (arrow B) and remove.
6	Install in the reverse order.