My 03 Lincoln navigators suspension went from bn fine to now the drivers side is higher than normal and the passengers side is lower than normal especially in the back ... It is also not lowering down when the vehicle is turned off .... ???? Any ideas

The air suspension shut-off switch on a Lincoln Town Car, located on the left side of the trunk.

https://www.motor.com/2023/03/diagnosing-and-repairing-ford-air-suspensions



https://www.justanswer.com/ford-lincoln/7jr4z-lincoln-navigator-ultimate-electronic-suspension.html

valve --line leak --shock leak or failure

MAY CHECK TO SEE IF LINES ARE PLUGGED WITH DEBRIE OR SUGGEST DISCONNECTING THE AIR LINES WITH VEHICLE OFF START VEHICLE MAKE SURE AIR FLOW IS COMMING OUT BOTH LINES SHUT OFF AUTO RECONNECT LINES THIS SHOULD BLEED THE SYSTEM THEN RESTART AUTO.

make sure you don't have an air leak at the springs or the compressor. but you may want to have the air suspension module checked for fault codes. the module itself may be the issue not processing the inputs correctly and mis-leveling the vehicle.

My suggestion to you and all the other folks leaving questions on this board about collapsed air suspension systems in luxury cars is to fix that one by replacing it with a real spring and shock system which you can buy at www.strutmasters.com if it is economically feasible, then sell it and avoid air suspensions systems like the plague. There are legions of old 70s Citroens still sitting idle 30 years later on collapsed air suspensions systems in garages and barns all over the country which cars the buyers can't let go because they cost so damn much. Get a coleman air mattress and use it every day, see how long it really lasts.

You should consider looking into one of Strutmasters air suspension conversion kits. Here is a link to their Lincoln Navigator suspension: http://www.strutmasters.com/lincoln-navigator-suspension-s/39.htm

put soapy water around the passenger side and if you see a leak you need a new airbag.

is it doing this while driving or while parked?

you need to check your real axle sensor it may have come loose or broken

I would recommend going to strutmasters.com and taking a look at our conversion kits. these convert you from the airbag to a powder coated American made steel coil spring that is guaranteed to last the life of the car. Airbags and compressors are constantly having to be replaced. Also something alot of people don't know is that theses air suspensions are not meant to be in temperatures above 90 Degrees or below 40 Degrees. That is most of the world. The temperature will cause you to replace alot of bags. and typically when your replacing a bag you are going to have to replace the compressor to because the bag had a hole or small crack in it causing the compressor to over work and it will die. I posted the link below so you can take a look http://www.strutmasters.com/lincoln-suspension-parts-s/1.htm I hope I was of some help Good Luck!!!