Depending on the height of your vehicle, the solenoid receives the message allowing air to enter or escape to bring your vehicle to normal height. If the vehicle needs to be raise the solenoid in the bags open permitting air to enter. If the vehicle needs to be lowered the solenoids open allowing air to leave the bags.
How to Disconnect the Air Lines on the Air Suspension Solenoid:
Suspension Air Spring BagsWhat is an air spring bag?- an air spring bag is a hollow inflatable rubber bag. They are used in place of coil steel springs. Air bags are flexible and have a certain amount of give, this helps absorb bumps for a smoother ride.