Central gateway control unit (ZGW), remove and install - AR54.21-P-0817GZ

MODEL 164 

Fig 1: Identifying Central Gateway Control Unit

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 2: Identifying Central Gateway Control Unit (ZGW) Remove/Install Components

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

	Remove/instal
	Notes on avoiding damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
1	Read out coding from central gateway control unit (N93)	Only when replacing the central gateway control unit (N93) and if it can still be read out with STAR DIAGNOSIS.
	Connect STAR DIAGNOSIS and read out fault memory		AD00.00-P-2000-04A
		STAR DIAGNOSIS diagnosis system	*WH58.30-Z-1048-13A
2	Remove left front seat		AR91.10-P-1000GZ
3	Remove left front entry trim		AR68.30-P-4100GZ
4	Remove left rear door sill molding		AR68.30-P-4100GZ
5	Remove lower trim on the left B-pillar		AR68.30-P-4700GZ
6	Remove cover (2).
7	Remove anchoring lug cover (3)
8	Remove bolt (4) and remove anchoring lug (5)	Installation:  Use anchoring lug (5) with its positioning lug properly.
			*BA68.50-P-1001-03F
9	Fold over rear left floor covering
10	Remove clip (6) and remove air duct (7)
11	Remove nuts (8) and remove left intermediate bottom (9)
12	Separate electrical connectors from central gateway control unit (N93)
13	Loosen central gateway control unit (N93) at the catch tabs (10) from the bracket and remove
14	Install in the reverse order
15	Code central gateway control unit (N93)	Only when installing a new central gateway control unit (N93).
		STAR DIAGNOSIS diagnosis system	*WH58.30-Z-1048-13A

CARGO RETAINERS

Number	Designation		Model 164.1/8
BA68.50-P-1001-03F	Bolt, cargo retainers to body	Nm	24

COMMERCIALLY AVAILABLE TOOLS

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