Level Control Components

Level Control Components

The level control at the front and rear axle is a partially supporting suspension system.
It keeps the vehicle level constant when the engine is running irrespective of the load.
At the same time the hydraulic oil from the pressure oil pump is delivered to the suspension components via the valve unit until the vehicle level has been adjusted.
As a result the steel springs have only a partially supporting function.
The vehicle level at the front and rear axle is recorded by a redundant level sensor at each point and is transmitted to the adaptive damping system (ADS) control module. The level control at the front and rear axle is achieved by four level valves in the valve unit.
When the vehicle is loaded, the lowering of the vehicle level is recognized by the control module via the level sensor.
By actuating the solenoid valves, pressure oil is delivered into the spring actuator and spring struts of the axle concerned until the vehicle level has reached its specified value.
The same process takes place in the opposite sense when unloading the vehicle.
After-running function The control module still takes in level changes for 1 min. after "ignition OFF" in order to be able to re-adjust (lower) the vehicle level in the event of any unloading.