Mazinger

Hi all,
I've been looking into buying an air suspension equiped Toyota Crown (an equevelant to the ls400 in japan, just a tad smaller). The car has the same air suspension system found on he ls400 too.

my question is how can i check if the system is working well or not, of course any car that touches the ground is a no no. but some were on the high or medium level (they have 3) and when I tried switching to the other levels i noticed no difference in the ride hieght, mind you the engine was running but the car was not moving. does it take time for the air system to change the height of the car ,as i only waited a minute or so.

thanks for your input