air suspension on 2002 Mercedes-Benz CL500

rear air suspension leaks down in about 30 minutes,crank car and goes back up is it normal or is it leaking

Asked by for the 2002 Mercedes-Benz CL500
No, it isn't normal. A good MB air suspension should hold pressure for about a week.
Spray soapy water to distr. valve, lines, air shocks, etc.. to find leak.