rear suspension goes down after sitting for a few hours and goes up after I star on 2005 Saab 9-7x

rear suspension goes down after sitting for a few hours and goes up after I start the vehicle

Asked by for the 2005 Saab 9-7x
Leak check the bags and lines between pump and shocks.
1 more answer
These cars are notorious for leakage in the air ride system. My compressor ran so much it finally failed. You can have a mod kit installed. They put in new springs and shocks. Not expensive at all. Fixing leaky air bags and a bad compressor is. Honestly, I can't tell the difference since they were installed.