Remove/Install Air Suspension Valve Unit - AR32.22-P-2015FR

Model 257 with code 489 (AIR BODY CONTROL)

MODIFICATION NOTES

23.05.2019

Pressure line to compressor/valve unit (P)

BA32.22-P-1004-03I

Fig 1: Air Suspension Valve Unit Components Location - Model 257 With Code 489

Courtesy of MERCEDES-BENZ USA

Topical note	Notes on AIR BODY CONTROL		AH32.22-P-1000-03LWO
	Remove
1	Release pressure of air suspension using vehicle diagnosis system.
			AD00.00-P-2000-06FR
2	Remove left front wheel.		AR40.10-P-1102A
3	Remove left fender liner front section.		AR88.10-P-1301FR
4	Disconnect electrical connector (5).
5	Mark pressure line connections (2) relative to AIR BODY CONTROL valve unit (Y36/6).
6	Detach pressure line connections (2) from AIR BODY CONTROL valve unit (Y36/6) and seal openings with suitable stop plugs.	Record plug	Fig 5
7	Remove screws (3) and remove AIR BODY CONTROL valve unit (Y36/6).
	Check
8	Check elastomer bearings (4) for hardening and damage.	In the event of a problem,
		replace corresponding elastomer bearing (4).
	Install
9	Position AIR BODY CONTROL valve unit (Y36/6) and screw in screws (3).	Bolt, valve unit to bracket for compressor unit	*BA32.22-P-1003-03I
10	Remove all stop plugs.
11	Attach pressure line connections (2) to AIR BODY CONTROL valve unit (Y36/6).	The threads of the pressure line connections (2) must not be damaged. Otherwise, leaks will occur.
		Pay attention to marking.
		Pressure line to compressor/valve unit (P)	*BA32.22-P-1004-03I
		Pressure line for air suspension on front axle/rear axle to valve unit	*BA32.22-P-1005-03I
		Box wrench bit	Fig 4
		Box wrench bit If the threads are damaged	Fig 3
		Repair pressure line connections (2).	AR32.22-P-2001-01FR
		Knife	Fig 2
12	Connect electrical connector (5).
13	Build up pressure of air suspension using vehicle diagnosis system.
			AD00.00-P-2000-06FR
	Check
14	Read out and delete fault memory using vehicle diagnosis system.
			AD00.00-P-2000-06FR
	Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running.	Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.	AS00.00-Z-0005-01A
15	Perform an engine test run and check air suspension for proper operation.
16	Check AIR BODY CONTROL valve unit (Y36/6) for leak tightness.		AR32.22-P-8101FR
	Install
17	Install left front section of fender liner.		AR88.10-P-1301FR
18	Install left front wheel.		AR40.10-P-1102A