Remove/install electronic ignition switch control unit - AR80.57-P-1000SX

MODEL 221.0 /1, 216 

Fig 1: Identifying Electronic Ignition Switch Control Unit Components

Courtesy of MERCEDES-BENZ USA

	Remove/install
	Notes on avoiding damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
1	Perform data transfer with STAR DIAGNOSIS	When replacing control unit (N73) Connect STAR DIAGNOSIS and select EIS menu point.
		STAR DIAGNOSIS diagnostic system	*WH58.30-Z-1048-13A
2	Fold left cover downward below instrument cover		AR68.10-P-1500SX
3	Press clips (1) together and press control unit (N73) out of bracket (2) from outside toward inside
4	Remove control unit (N73) downward until electrical connectors (3, 4) are accessible
5	Disconnect electrical connectors (3, 4) from control unit (N73)
6	Install in the reverse order

COMMERCIALLY AVAILABLE TOOLS

Number	Designation
WH58.30-Z-1048-13A	STAR DIAGNOSIS diagnostic system, Compact Passenger Car	6511 1801 00