The sensor is reporting lower pressure than actual, then either 1) in extremeĬases the control module will think the system is below normal operating pressure and will The ride will cause get bouncy and handling will deteriorate since the system cannot add fluid to the struts fast enough to meet demands. If the sensor is reporting higher than normal, you will likely see frequent 'too low' error messages since the system can not keep up with demand. If the sensor is bad, the ABC control module will report no pressure and/or an error code for the sensor, but the car will still rise when pressing the ride height button. The control module is able to detect a loose connection or a completelyįailed sensor and log an error code to that effect. Or it could just be wrong about the pressure it is There could be a looseĬonnection between the sensor and the control module. The suction valve would indicate the pump is working full throttle all the Weak pump and a pressure limiting valve letting off pressure too soon. It won't be able to tell the difference between a Normally but the pump will be working extra hard. If this endless loop is occurring atĪ pressure above the minimum but below the ideal, then the system will operate System and display a warning on the dash. If the pressure that this is occurring at is below theĪcceptable pressure to operate the ABC system, the control module will shutdown the ABC

Pressure and tell the suction valve on the pump to open up, and meanwhile the pressure limiting valve will constantly route all that extra fluid back to the reservoir inĪn endless loop. In this scenario the control module will sense the need for more I don't think it is a likely scenario but it is In the return side pressure caused by the struts letting out fluid.ģ) The pressure limiting valve opens at too low a pressure. An accumulator (53) helps even out the spikes When theįluid leaves the struts, it travels through a temperature sensor(B40/1), and then through the oil cooler(9) and back to the reservoir(2). Valves to open or close which allows fluid to enter or leave the struts. Store fluid and pressure for filling the strut.

Accumulators(4,14) are connected to each valve block to From there the fluid travels to the front and rear valveīlocks(Y36/1 and Y36/2) which are used by the control module to manage the amount of fluid in the struts(40,41). Sensor (B4/5) that reports the pressure to the control module. The pump pushes the fluid to an assembly(52) containing a pulsation dampener(52a) that reduces vibration, a pressure limiting valve (52b) that regulates the pressure at 200 bars, and a pressure The reservoir it is drawn into the pump(1). Tour of the diagram…the ABC fluid starts its travel at the fluid reservoir(2).

Mercedes benz s600 wis