Normally you dont move the height lever - only when you need to raise the suspension. With the lever in the centre position, start the engine, and within a short while, the car should be at normal height - that is with the edge of the wheel arch somewhere in line with the tyre profile on the rear axle and at the front, a space of around two inches between wheel arch and tyre. When the engine is running, how often can you hear a clicking sound from the front of the engine?