Control Modes: Normal

The normal mode is the starting point for the vehicle's normal operating state. It is obtained by way of the engine running signal.

Ride level compensation, changing the vehicle's ride height and filling the accumulator are possible. The compressor starts up as required.

A narrower tolerance band than that in Pre-mode can be used because the battery capacity does not have to be protected. The fast filter is used with a narrow tolerance band of +/- 10mm. In this way, ride level compensation takes place outside a narrow band of 10+/- 10mm. The faster filter allows the system to respond immediately to changes in ride level. Evaluation and control are performed separately for each wheel.

When a speed signal is recognized, the control unit switches into Drive mode. When the vehicle is stopped, the control unit remains in Drive mode. The system switches back into Normal mode when a door or the boot (trunk) lid is also opened. If none of the doors or the boot lid is opened, the vehicle cannot be loaded or unloaded.

This prevents a control operation happening when the vehicle (for example) is stopped at traffic lights and the ride height is above the mean axle due to the pitching motion on the rear axle.