Irregular level control after longer standing time (C1525, C1526, C1531) - AF32.50-P-6401A

MODEL 215.### #A as of 018130 up to 023610, 220.### #A as of 227562 up to 265219, 230.### #F as of 000300 up to 004810 with CODE (487) Active body control (ABC)

MODIFICATION NOTES

3.5.05

Damage code changed

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

Category	Op. no.	Operation text	Time	Acc. no.	Code
P	023476	FLUSH ABC SYSTEM AND CHECK FOR PROPER FUNCTION, MODEL 215	026 WU/2.2 h	-	-
P	023477	CHECK ABC SYSTEM FOR PROPER FUNCTION (AFTER 12 HOURS), MODEL 215	007 W/0.6 h	-	-
P	023474	FLUSH ABC SYSTEM AND CHECK FOR PROPER FUNCTION, MODEL 220	026 WU/2.2 h	-	-
P	023475	CHECK ABC SYSTEM FOR PROPER FUNCTION (AFTER 12 HOURS), MODEL 220	007 W/0.6 h	-	-
P	023512	FLUSH ABC SYSTEM AND CHECK FOR PROPER FUNCTION, MODEL 230	026 WU/2.2 h	-	-
P	023513	CHECK ABC SYSTEM FOR PROPER FUNCTION (AFTER 12 HOURS), MODEL 230	007 W/0.6 h	-	-
P	327547	CHECK VALVE BLOCKS FOR INNER LEAKAGE (VIA STANDING TIME), MODEL 215/220	003 WU/0.3 h	-	-
P	327545	INSTALL NEW FRONT AXLE VALVE BLOCK FOR ABC (AFTER CHECKING), MODEL 215/220	026 WU/2.2 h	-	-
P	327546	INSTALL NEW REAR AXLE VALVE BLOCK FOR ABC (AFTER CHECKING); MODEL 215/220	011 WU/0.9 h	-	-
P	541017	READ OUT AND ERASE FAULT MEMORY, MODEL 215/220	005 WU/0.4 h.	-	-
P	327547	CHECK VALVE BLOCKS FOR INNER LEAKAGE (VIA STANDING TIME), MODEL 230	003 WU/0.3 h	-	-
P	327545	INSTALL NEW FRONT AXLE VALVE BLOCK FOR ABC (AFTER CHECKING), MODEL 230	021 WU/1.8 h	-	-
P	327546	INSTALL NEW REAR AXLE VALVE BLOCK FOR ABC (AFTER CHECKING), MODEL 230	020 WU/1.7 h	-	-
P	541017	READ OUT FAULT MEMORY AND ERASE, MODEL 230	005 WU/0.4 h.	-	-

Damage code	Cause	Remedy
32 554 B1	Two possible complaints can occur: Irregular level control, engine is running or one-sided lowering of the vehicle after shutting down, engine not running. If both complaints occur simultaneously process cause 2 first.
	Cause 1:	Remedy 1:
	If this complaint occurs when the engine is running, a control valve sticking in the valve block of the front axle or rear axle may be the cause.	Replacement of the valve blocks or level calibration does not help in the case of this complaint.
	Irregular level control, engine is running	1 Read out fault memory of ABS control unit.
	On new vehicles the front axle control valves Y36/1 or rear axle control valves Y36/2 may stick when the vehicle stands for a longer time in the idle position (> 10 min.): The following can occur: The vehicle can rise or lower irregularly on one wheel or axle. In individual cases, a warning message appears on the display in the instrument cluster.	Possible fault codes: C1525 001 - Critical vehicle level left front C1525 002 - Critical vehicle level right front C1525 004 - Critical vehicle level left rear C1525 008 - Critical vehicle level right rear C1526 001 - Fault in hydraulic circuit at left front suspension strut C1526 002 - Fault in hydraulic circuit at right front suspension strut C1526 004 - Fault in hydraulic circuit at left rear suspension strut C1526 008 - Fault in hydraulic circuit at right rear suspension strut
		2 Flush ABC system	SM32.50-P-0002A
	Cause 2:	Remedy 2:
	Lock valve in valve block for front or rear axle internally leaky.	Replacing the ABS control unit or level calibration does not help in the case of this complaint.
	One-sided lowering of the vehicle when shutting down, engine not running.	1 Park vehicle on a flat surface.
	When the engine is off, inner leakage of the lock valve in the front axle valve block Y36/1 or rear axle valve block Y36/2 may cause one-sided lowering of the vehicle.	The vehicle level must not drop even after a longer standing time (over night).
		2 Read out fault memory of ABS control unit.
		Possible fault codes: - C1525 001 - Critical vehicle level left front - C1525 002 - Critical vehicle level right front - C1525 004 - Critical vehicle level left rear - C1525 008 - Critical vehicle level right rear - C1531 001 - Left front suspension strut moves, even though lock valve is closed - C1531 002 - Right front suspension strut moves, even though lock valve is closed - C1531 004 - Left rear suspension strut moves, even though lock valve is closed - C1531 008 - Right rear suspension strut moves, even though lock valve is closed
		3 Remove/install/replace valve block Y36/1 or Y36/2.