If you cannot find where to fill the air bags with air, follow the air line from each bag and see if you can find an air line connector,My thought is that it's somewhere near the airbag.
Most likely your air suspension bags (or the pump) has failed.
No, they have an air suspension which means air bags.
before i start are you changing suspension air springs or safty restraint air bags im sorry but many people call front suspension air bags
The pump is in a compartment below the air filter. I have heard that the pump usually goes out because the air bags or lines are leaking.
your air bags have a lick
To check the bags, soapy water them and if you see bubbles then you know you have a leak.
Leak. Spray soapy water on the air suspension bags and watch for bubbles On bags. Also check in engine compartment wher the air suspension bags Top part are located 3 nuts or 4 don't remember , remove plastic cover that Hides the screw for bags. Listen for air leak from tha location. If that's where it's coming from replace bag.
Bag the air bags. Replace with a spring conversion kit. No more headaches!
Could be one or both of the front air bags or the spider valve in the compressor.
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.
Below is a link to the instructions for that installation.
You can replace the bags. The down side to that is your suspension is old and the components are old and warn. What happens when you put new bags on the car they are fresh and the compression has to work extra hard to break in the air bags and pump up the stiffer bags. That's when everything goes out. I had a 1997 Town car and my rear bags went out. I bought a kit online. It took me 20 mins to install. Unplug the bags. They come right out then the springs go right in. Cheaper than new bags and still had an amazing ride. Better than the bags in my opinion. Heres a website to get them at. http://www.strutmasters.com/Lincoln-town-car-suspension-s/37.htm