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you don't computer controlled, or replace the suspension (shudder) expensive.
If it has air bag suspension, air bags could be shot or the air compressor for the air bag suspension not working.
does the 2003 navigator have separate station to put wiper fluid for the rear?
rear bags are bad or there is a leak going to the rear. you can check at the pump and see if the tube for the rear came off.
Either one of your rear air bags have a leak or both have went bad.
The compressor is either bad or your air bags are bad... Get springs from a rear 2wd Expedidion and swap them on your Navigator, is real chep and easy. and it feels just like the air bags. I did it to mine last week...
It is probably because of the rear air suspension... Lincolns have an "air" suspension which helps to give it a plush riding feel. There are bags near the wheels of each rear tire that are filled with air upon vehicle start up (or very shortly thereafter). These bags are filled with air has the vehicle is on, inflating if there is a drop in pressure. When the vehicle turns off, these bags are deflated thus lowering the rear end of the car.
if you have more than 100k on it the rear bags have holes in them ,the fuse has blown cutting power to the pump that airs up the bags.
take to trained technician rear suspension needs to be removed and a press and specialty tools are required!
Town cars have an air suspension system. There are air bags on the rear axle instead of springs. There are a lot of things that can go wrong: Leaks in the bags or lines. Pump not working. Fuses blown. Google "check air suspension". You can also buy a conversion kit that replaces it all with springs designed just for that. I paid $115 on eBay and am glad to be done with the air suspension.
Yes, but is there air suspension involved? If so, there are replacement springs for the air bags.
Talked to a mechanic when purchasing the vehicle - he said that you have to turn off the air bags in the glove compartment when changing tires to prevent this from happening. Hope this helps.