Remove/Install Electronic Ignition Lock Control Unit - AR54.21-P-0038ME

Model 167 

Fig 1: Electronic Ignition Lock Control Unit Components Location - Model 167

Courtesy of MERCEDES-BENZ USA

Topical note	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Remove/install
1	Clamp off ground line of on-board electrical system battery (G1).		AR54.10-P-0003ME
2	Remove front floor covering on driver side.		AR68.80-P-0007ME
3	Cut through cable tie (2) on hose (1) and pull off hose (1) upwards.	Replace cable tie (2).
4	Release and disconnect electrical connector (3) from electronic ignition lock control unit (N73).
5	Remove floor covering at front on front passenger side from center console and fold over.
6	Release and disconnect electrical plug (4) from electronic ignition lock control unit (N73).
7	Push out electronic ignition lock control unit (N73) in direction of arrow from right to left using assembly tool (5) and remove.	Carefully push out electronic ignition lock control unit (N73) using assembly tool (5). Otherwise, the contact socket on the electronic ignition lock control unit (N73) may be damaged.
		Assembly tool	Fig 2
8	Install in the reverse order
9	Commission electronic ignition lock control unit (N73).	If the electronic ignition lock control unit (N73) was replaced.
			AD00.00-P-2000-06ME

Fig 2: Identifying Assembly Tool (245 589 04 63 00)

Courtesy of MERCEDES-BENZ USA