Remove/install suspension (ADS) control unit - AR32.32-P-0500GZ

MODEL 164 with CODE (489) Airmatic (air suspension with level adjustment and adaptive damping system ADS) 

Fig 1: Identifying Suspension (ADS) Control Unit Components

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

	Remove/install
	Notes on avoiding damage to electronic components due to electrostatic discharge	All models	AH54.00-P-0001-01A
1	Read out coding of AIRmatic control unit (N51)	Only when installing a new AIRmatic control unit (N51).
	Connect STAR DIAGNOSIS and read out fault memory		AD00.00-P-2000-04A
		STAR DIAGNOSIS diagnostic system	*WH58.30-Z-1048-13A
2	Remove left front floor covering (1)		AR68.20-P-2050GZ
3	Unscrew plastic nuts (2).
4	Remove cover (3)
5	Disconnect electrical connectors (4).
6	Unscrew nuts (5).
7	Remove AIRmatic control unit (N51)
8	Install in the reverse order
9	Code AIRmatic control unit (N51)	Only when installing a new AIRmatic control unit (N51).
		STAR DIAGNOSIS diagnostic system	*WH58.30-Z-1048-13A
10	Check vehicle level at front and rear axle, adjust it and store normal level  in control unit again	Only when installing a new AIRmatic unit (N51).
		STAR DIAGNOSIS diagnostic system	*WH58.30-Z-1048-13A