Question about 2004 Lincoln Navigator

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I have a 04 Lincoln Navigator the air suspension keeps acting up some times it works just fine if it has been setting all night it will go all the way down and will sometimes air up and sometime it won't. If I let it run for a while it seems to work. The dealer couldn't tell me what part was not working his solution was change everything for 3,500.00 dollars

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  • Lincoln Master
  • 53,745 Answers

Typical dealers response
indicates that there is a faulty non-return valve in the system that is passing air when sitting and allow air in and out when compressing
I would start by checking the valves at the discharge line at the compressor, working to the air reservoir valves then onto ride height control valves finishing with holes in the air suspension bags them selves
yes it work doing the checking but there is no real expense until you find the faulty part and I am sure that it will be less than the quote

Posted on Sep 16, 2017

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6 Suggested Answers

6ya6ya
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SOURCE:

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Posted on Jan 02, 2017

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keemo68
  • 1263 Answers

SOURCE: 2001 Lincoln Navigator Air Suspension

do you have a auto leveling system?

Posted on Sep 01, 2008

fastboyz
  • 674 Answers

SOURCE: 03 lincoln navigator air suspension

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

Posted on Jan 02, 2009

  • 4387 Answers

SOURCE: lincoln navigator air suspension is all the way down

that should not happen. Did you turn the switch off in the back for the suspension? Did you do something else at the same time, like check the spare tire for air pressure?

I have info on 2003 navigator 4 wheel air suspension. Maybe similar

SECTION 204-05: Vehicle Dynamic Suspension — 4-Wheel 2003 Expedition/Navigator Workshop Manual
DESCRIPTION AND OPERATION Vehicle Dynamic Suspension The four wheel air suspension system is comprised of the following components:

  • service switch
  • control module
  • two front height sensors
  • one rear height sensor
  • compressor and drier assembly (includes vent solenoid)
  • air lines
  • front and rear air spring and shock absorber assemblies
  • four air spring solenoids
WARNING: The service switch for the air suspension system must be shut off prior to hoisting, jacking or towing an air suspension vehicle. This can be accomplished by turning off the air suspension switch located in the jack storage area in the rear of the passenger compartment. Failure to do so may result in unexpected inflation or deflation of the air springs which may result in shifting of the vehicle during these operations.

WARNING: Do not remove an air spring under any circumstances when there is pressure in the air spring. Do not remove any components supporting an air spring without either exhausting the air or providing support for the air spring to prevent vehicle damage or personal injury.

Air Suspension Pneumatic Diagram 801e0c4.gif
Item Part Number Description 1 5319 Air compressor and drier 2 5B322 Air line T-fitting 3 5B321 Air line union 4 — Air line Y-fitting 5 18945/5311 Air spring and solenoid
------------------------------
Principles of Operation
The 4-wheel air suspension (4WAS) module commands changes in vehicle height that are necessary for both the load leveling and the vertical height adjustment features.
The 4WAS load leveling feature automatically makes adjustments in vehicle height so that the vehicle is always at trim height, and that constant front-to-rear vehicle attitudes are maintained over the load range of the vehicle. Adjustments in height that are necessary to correct height differences between the vehicle left and right sides for the 4WAS system are restricted to what can be reliably achieved with three height sensors.
The height adjustment feature has three vehicle heights within a two-inch span:
Kneel height — improves the ease of entering and exiting by lowering the vehicle one inch below the trim height in the front and rear when the vehicle ignition is in the OFF or LOCK positions and the vehicle is stationary.
Trim height — normal vehicle ride position; vehicle moves to trim position when the ignition is ON, when the transmission is initially shifted to DRIVE or REVERSE mode, when all doors are closed or when speed of more than 24 km/h (15 mph) is detected.
Off-road height — improves ground clearance by raising the vehicle one inch above trim height in the front and rear when the vehicle is at 4x4 low modes and the vehicle speed is less than 40 km/h (25 mph).
The 4WAS module uses the universal bus protocol, (UBP), module communications network for sending and receiving various signals with the exception of speed, information from the three height sensors, and the air suspension service switch. For additional information about UBP, refer to Section 418-00 .
The 4WAS system holds vehicle height when any door or rear hatch is opened. The system stores front and rear vehicle height the moment any door is detected open. The system then maintains this height regardless of the addition or removal of a load. The system returns to its commanded height when all doors are closed or vehicle speed exceeds 24 km/h (15 mph).

-------------------------------
Air Suspension Service Switch
The air suspension service switch signal is needed to wake up the 4WAS module. Without the module receiving this signal, the 4WAS system is inoperative at speeds below 24 km/h (15 mph) and will not react when the vehicle is raised or lowered. At speeds above 24 km/h (15 mph), the system will be active as if the air suspension service switch is in the ON position.
Vehicles without message center When the air suspension service switch is in the OFF position and the ignition switch is in the RUN position, a "CHECK SUSP" will appear in the RH corner of the instrument cluster.
Vehicles with message center When the air suspension service switch is in the OFF position and the ignition switch is in the RUN position, the message center will display "SUSPENSION SWITCHED OFF"
-------------------------------------------
Inspection and Verification
  1. Verify the customer concern.
  1. NOTE: If the door ajar indicator is illuminated when all doors, liftgate, and liftgate glass are closed, the air suspension will not work correctly. Repair door ajar indicator; refer to Section 413-01 .
    Visually inspect for obvious signs of mechanical and electrical damage.


Visual Inspection Chart Mechanical Electrical
  • Restricted suspension movement
  • Excessive vehicle load
  • Cut, severed, crimped air line(s)
  • Unmounted height sensor(s)
  • Damaged front air spring(s)
  • Damaged rear air spring(s)
  • Battery junction box (BJB) fuses 20 (30A), fuse 27 (5A), and fuse 111 (50A)
  • Loose, corroded, or disconnected connectors
  • Air suspension service switch is in the OFF position
  • Damaged solenoid valve(s)

-------------------------
I fthis does not help, the dealer can hook up his diagnostic equipment and download fault codes. Good luck. Please give best rating if this helps.

Posted on Apr 20, 2009

ancdlm
  • 58 Answers

SOURCE: 2003 Lincoln Navigator air suspension

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!!!

Posted on May 06, 2009

  • 507 Answers

SOURCE: 2004 lincoln navigator air suspension my truck is lowered from th

could be faulty compressor which pumps up the suspension,is it leaking from anywhere,causing the pump to work too hard,has it just packed up,check fuses but probably compressor

Posted on Oct 26, 2009

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2 Answers

WHERE IS THE REAR HEIGHT SENSOR ON 2004 LINCOLN NAVIGATOR


Usually between the frame and the rear axles. A lever type device, should be fairly easy to locate. Check that the compressor is building air pressure and storage tank. Air bags not leaking and etc.

Feb 13, 2013 | 2004 Lincoln Navigator

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2004 Lincoln nave, rear wheels jacked up high, front wheels normal, rides real rough??? any thoughts???? Thanks,


Replace the air suspension with conventional shock/strut
conversions. The Air Ride System is not worth investing
time and money ,after the vehicle is 5 years old.
Too expensive to maintain ,and too difficult to diagnose

Next time buy the Ford version of the vehicle

Jan 23, 2011 | 2004 Lincoln Navigator

1 Answer

2006 Navigator air suspension works fine until the weather gets cold then after the vehical sets over night some times the front suspension will be down.The bags don't appear to be leaking and the problem...


I suggest you remove most of that Air System and
replace with conventional shocks/struts etc

You will spend a few thousand, before you take my advice,
if you continue to try and diagnose those issues.

It is a system not worth working on

Read other peoples problems and a few I offered that
idea to, and they were happy to switch over, at any cost,
so they could use their veh again

Dec 15, 2010 | 2006 Lincoln Navigator

2 Answers

04 lincoln navigator, Air ride problem. Driverside front and rear bags appear fully inflated. The passenger side looks normal height. When I shut the truck off driverside stays jacked up and passenger side...


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.

Dec 12, 2010 | Lincoln Navigator Cars & Trucks

2 Answers

AIR SUSPENSION NOT RISING


Under the hood there is an air compressor to fill the air bags on the suspension. With age the compressor draws excessive amps and blows the fuse. Check the fuse and see if it has popped. If so replace it. If the fuse is good ,locate the compressor and check the electrical plug to it to see if it has become corroded. If corroded pull the fuse and scrub the contacts with a brass brush untill clean. To keep it from corroding in the future apply some dieletric grease to the contacts and plug it back in. hope that helps, Rich.

Nov 21, 2010 | 2004 Lincoln Navigator

2 Answers

Lincoln navigator air suspension


A lot of problems,with that system
If your keeping the vehicle,swap out the air shocks, for conventional
Do not go to a dealer. People on this site, are spending $4000.00, and the dealers,still are unable to repair.

Nov 08, 2010 | 2003 Lincoln Navigator

2 Answers

My 2005 lincoln navigator air suspension doesnt want to work how do i make it lift up?


my 2005 lincoln navigator air suspension doesnt want to work how do i make it lift up?

Sep 11, 2010 | 2005 Lincoln Navigator

1 Answer

Air suspension pump on 2003 lincoln navigator


the little orange or red ring around the air hose whare it goes in compressor, must be pushed in while pulling out on air line. a small flathead screwdriver works fine

Apr 23, 2009 | 2003 Lincoln Navigator

1 Answer

2000 lincoln Navigator air suspension


There are level control sensors they look like little arms (with joints like your elbows) mountesd on lower control arms. They may be at fault they control the height and turn the pump off when the height is reached. try adjust height first before you replace, they can be adjusted. Good Luck

Dec 17, 2008 | 2000 Lincoln Navigator

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