My suspention air bags on my 02 lincoln go down duing the day and won't refill the next morning I can start thr car and my bags fill. Why

The air ride will not come on unless switch is on. If it continued to run through the night. Battery would be dead and maybe a burn up compressor.

the switch isn't the problem. the bags will not fill during the day while driving. the bags deflate during driving time. the compressor kicks on but the rear end won't rise, the next morning the bags will raise the rear end and the car will be fine til I drive the air bags are new and the switch that controls the high and low has been replaced. It seems that when hot they won,t fill please help

I would recheck the fill lines. And also check servos at pump motor. Also recheck level switch in rear. Make sure it's adjusted properly. Level switch could be faulty. Its attached on the rear axle. A scanner may need to be hooked to the car and monitor the actual level of vehicle.

Also check the fill valves that attach to the bag. They allows it to pass through and also will purge air from bags