Vehicle does not lower and/or fault message on display "Air suspension, visit workshop", appears after longer trip on freeway (speed reduction) (C1517)- AF32.50-P-8100A

MODEL 220.### (except 220.178) ## as of 196614 up to 271200 except CODE (487a) Active body control (ABC)

OPERATION NO. OF OPERATION TEXTS OR STANDARD TEXTS AND FLAT RATES

Category	Op. no.	Operation text	Time	Acc. no.	Code
P	541011	Perform quick test	004 WU
P	329532	Replace relief valve on compressor	006 WU

Damage code	Cause	Remedy
32 344 H2	Pressure relief valve (A9/1y1) does not open.	Remove/install/replace pressure relief valve, for this purpose: ↓
	The DTC C 1517 032 can be stored in the DTC memory. DTC text: Stabilizing times when emptying or filling are too large.	1 Remove paneling on right front.
		2 Disconnect connector pressure relief valve (figure).
		3 Remove/install/replace pressure relief valve. 2.6 Nm (+1)
		Carefully pull out valve, the pressure piston is pressed out by a spring. Installation: Observe installation direction; to check, it must be possible to push the pressure piston in flush with the edge of the housing against the force of the spring.
		4 Connect connector to pressure relief valve.
		5 Install paneling on right front.
		6 Check whether vehicle raises and lowers.

Fig 1: Locating Connector On Pressure Relief Valve

G04849329

PARTS ORDERING NOTES

Part no.	Designation	Quantity
A 220 432 00 07	Relief valve repair kit	1