Remove/Install Air Body Control, Control Unit - AR32.22-P-0006LW

Model 205 with code 489 (AIRMATIC)

Model 253 (except 253.992/993) with code 489 (AIR BODY CONTROL)

Courtesy of MERCEDES-BENZ USA

Fig 1: Air Body Control, Control Unit Components Location - Model 205 with code 489

Courtesy of MERCEDES-BENZ USA

Information on preventing damage to electronic components due to electrostatic discharge

	Remove/install
1	Perform initial startup of AIR BODY CONTROL, control unit (N51/3)	When replacing AIR BODY CONTROL, control unit (N51/3).
			AD00.00-P-2000-04B
		If data transfer is faulty, calibrate the vehicle as concluding work.
2	Remove left front seat	Model 205.0/1/2/3 with code 489 (AIRMATIC) Model 253 (except 253.992/993) with code 489 (AIR BODY CONTROL)	AR91.10-P-1000LW
		Model 205.4 with code 489 (AIRMATIC)	AR91.10-P-1000LWR
3	Detach electrical wiring harness (3) from air duct (1)	Replace cable tie (4).
4	Release air duct (1) (arrows A) and remove
5	Carefully raise floor covering (2)	Check for correct seating.
6	Unclip AIR BODY CONTROL, control unit (N51/3) from catch hooks (5) and pull out toward vehicle center (arrows B)
7	Disconnect electrical connectors (6) and remove AIR BODY CONTROL, control unit (N51/3)
8	Install in the reverse order
	Calibrate
9	Calibrate vehicle on alignment lift using vehicle diagnosis system	If the data transfer to the new AIR BODY CONTROL, control unit (N51/3) cannot be conducted.
			AD00.00-P-2000-04B