Question about 2004 Lincoln Navigator

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What causes C1725 code for the 2004 lincoln navigator?

Professional mechanic...changed the height sensors and air compressor still has this code but can not figure out why the system will not lift up

Posted by Anonymous on

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Posted on Jan 02, 2017

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

  • 1 Answer

SOURCE: I have used air ride parts to sell for a '98-02 Navigator

email me @ byron712@cableone.net

Posted on Oct 30, 2009

  • 2 Answers

SOURCE: I have a 2003 Lincoln Navigator

There may be more underlying problems than you want to deal with. On the air suspension systems it can be very pricey and frustrating finding the problem with the car. My suggestion is to check out Strutmasters.com. They offer conversion kits for your vehicle at a great price. I put one on my moms Navigator and she loves it! Of course she loved the fact that she saved money too.

Posted on Jul 09, 2010

  • 14585 Answers

SOURCE: I have a 2004 lincoln

Your mechanic should have known NOT to hot wire anything in the vehcile. Everything is run by computer/s. when you start hot wiring things you start to put voltage or higher voltage to things that should be controlled by the computer. Have it unhot wired and fix the problem. Putting higher voltage to things that run on 5 volts tends to burn up computers. Very costly....

Posted on Jul 02, 2011

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2004 Lincoln navigator air suspension all the way down front and back if I was to jump the relay to turn compressor on should the truck start raising up unless compressor not pumping or a leak


no it wont. the air suspension works as a complete system. each air spring has an electric solenoid, each corner has an electric height sensor and then the compressor itself. just energizing the compressor will not open the solenoids or sensors both of which are needed to raise the vehicle. what is probably happening is a failure in the computing system for the suspension system. expensive to repair.

Jan 18, 2017 | 2004 Lincoln Navigator

1 Answer

The air suspension on our 2000 Lincoln navigator seems not to be working right how can we find out what is causing this can we still drive it with this going on?


Ford Air Ride Rear Suspension Down Diagnosis & Fix ...

? 9:57
https://www.youtube.com/watch?v=wfh7n17hvN8
Feb 24, 2014 - Uploaded by FordTechMakuloco
Ford Air Ride Rear Suspension Down Diagnosis & Fix ... why theair ride compressor is not turning on and pumping up the air ridesuspension on your truck. ... Ford Expedition & Lincoln Navigator Air Ride C1725 Common Faults ... 2000 Ford Expedition - Replacing the rear shocks with load leveling shocks ...

2003 Lincoln Navigator air suspension fix(3) - YouTube

? 3:41
https://www.youtube.com/watch?v=MhWlcYycny4

Dec 25, 2015 | Lincoln Cars & Trucks

2 Answers

On a 2004 Lincoln Navigator the check air suspension light came on. there are no leaks on the lines but the car bounces on the smallest of bumps. Is there a relay or something that has gone bad?


There is a relay an there is a control module that controls everything in the air suspension system an ride height sensors an related wiring ! The control module can have diagnostic trouble codes stored in it's memory as to what the problem could be ! Here are some of the basics to check !
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)
  • Central junction box (CJB) fuses 11 (10) (later built vehicles), 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)/height sensor(s)
  1. If the inspection reveals an obvious concern that can be readily repaired, correct the concern before continuing with Inspection and Verification.
  1. NOTE: The 4WAS module is also referred to as the Vehicle Dynamic Module (VDM). If the concern remains after the inspection, use the scan tool connected to the data link connector (DLC) to retrieve continuous diagnostic trouble codes (DTCs) and to execute On-Demand Self Test diagnostics for the 4WAS module.
    • If the On-Demand Self Test is passed and no DTCs are retrieved, GO to Symptom Chart to continue diagnostics.
    • If DTCs are retrieved, go to the 4WAS Module Diagnostic Trouble Code (DTC) Index in this section.
    • If the 4WAS module cannot be accessed by the scan tool, Go To Pinpoint Test A .
Wheel Air Suspension (4WAS) Module Diagnostic Trouble Code (DTC) Index NOTE: Repair all other DTCs before C1725 and C1726. Repair DTCs C1990 and C1991 last. DTCs Description Source Action B1317 Battery voltage high 4WAS module Go To Pinpoint Test C . B1318 Battery voltage low 4WAS module Go To Pinpoint Test C . B1342 ECU is defective 4WAS module INSTALL a new 4WAS module. REFER to Air Suspension Control Module . SET the ride height. REFER to Ride Height Adjustments . CARRY OUT the pneumatic test. TEST the system for normal operation. B1566 Door circuit failure 4WAS module REFER to the Symptom Chart. B2477 VAPS II steering assist curve not complete 4WAS module REFER to Section 211-00 . C1445 Vehicle speed signal circuit failure 4WAS module GO to Symptom Chart . C1724 Air suspension height sensor power circuit failure 4WAS module Go To Pinpoint Test D . C1725 Air suspension front pneumatic failure 4WAS module Go To Pinpoint Test E . C1726 Air suspension rear pneumatic failure 4WAS module Go To Pinpoint Test E . C1760 Air suspension rear height sensor signal circuit failure 4WAS module Go To Pinpoint Test F . C1770 Air suspension vent solenoid output circuit failure 4WAS module Go To Pinpoint Test G . C1790 Air suspension LR air spring/shock solenoid output circuit failure 4WAS module Go To Pinpoint Test H . C1795 Air suspension RR air spring/shock solenoid output circuit failure 4WAS module Go To Pinpoint Test H . C1830 Air suspension compressor relay circuit failure 4WAS module Go To Pinpoint Test I . C1840 Air suspension disable switch circuit failure 4WAS module Go To Pinpoint Test J . C1873 Air suspension RF air spring solenoid output circuit failure 4WAS module Go To Pinpoint Test H . C1877 Air suspension LF air spring solenoid output circuit failure 4WAS module Go To Pinpoint Test H . C1881 Air suspension RF height sensor circuit failure 4WAS module Go To Pinpoint Test F . C1889 Air suspension LF height sensor circuit failure 4WAS module Go To Pinpoint Test F . C1897 Steering VAPS circuit loop failure 4WAS module REFER to Section 211-00 . U1950 UBP communication bus fault 4WAS module REFER to Section 418-00 . C1964 Air suspension compressor actual run time exceeded allowed run time 4WAS module Allow the air compressor to cool down. CLEAR the DTC. REPEAT the self-test. C1990 New control module initialization (requires ride height calibration and pneumatic test pass) 4WAS module REFER to "Clearing DTC C1990 or C1991". C1991 Plant ride height setting and/or tests incomplete 4WAS module REFER to "Clearing DTC C1990 or C1991". U2235 4x4 mode status invalid 4x4 control module REFER to Section 418-00 . U2306 Transmission PRNDL indicator or vehicle speed signal invalid Instrument Cluster (IC) REFER to Section 418-00 . This is a very complex system ,you need a factory scan tool or one that is equal to it ! It could be a fuse a wiring issue a sensor or the module , relay etc... You may want to take this to a ASE repair facility or the dealer !

Aug 05, 2015 | 2004 Lincoln Navigator Luxury

1 Answer

Air suspension is to height


Bad height sensor or air suspension compressor has died? If you hear the pump, then it might be the sensors. If there's nothing, could be a blown fuse or the system was swtiched off (switch in the trunk)

Dec 07, 2013 | 2004 Lincoln Navigator

1 Answer

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

1 Answer

03 navigator , check suspension light comes on intermittently and car is difficult to steer. Dealership says control module is faulty


YEP COULD BE FAULTY AIR SPRING COMPUTER SYSTEM OR COULD BE FAULTY HEIGHT SENSOR OR BAD AIR COMPRESSOR.

Sep 01, 2011 | 2004 Lincoln Navigator

2 Answers

I have a 2004 4x4 navigator and the front wont pump up. Would I have the same ride if i convert to shocks and springs or do you have any tips to trouble shoot it?


It may be that the airbag has a hole in it (you will probably hear the air compressor running a lot if this is the case), or (more likely) it could also be that the sensor for the ride height on the front is faulty and the car does not realize that it needs to be inflated. These sensors lay inside the front fender and can get full of road gunk and cause them to fail. I do not suggest trying to convert to a conventional suspension system, I'm not even sure it's possible. It would change the ride and confuse the computers on the car. Instead take it to a Lincoln dealership and have them properly diagnose it with their system scan tool.

Apr 07, 2011 | 2004 Lincoln Navigator

1 Answer

Air bags come up at different times, sometimes its the front sometimes its just the left side then sometimes it was the right but now the compressor stays on 5-10mins and its not coming up at all. the so...


First, the only work EVER DONE on your vehicle YOU AUTHORIZED

It is a mechanical piece of transportation,so get a grip on it

Remove the Air Suspension System & Replace with conventional
shocks,struts,accordingly

DO NOT invest in the air system,they continually fail on ALL Navigators


IF " THEY " is a DEALER----------------never go to them or any dealer EVER"

Dec 09, 2010 | 2004 Lincoln Navigator

2 Answers

Front air suspension stopped working on my 2004 lincoln navigator. i replace the relay still doent work. Is there someway to reset the system


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
-----------------------------------------------------------
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)

  1. If the inspection reveals an obvious concern that can be readily repaired, correct the concern before continuing with Inspection and Verification.
  1. If the concern remains after the inspection, use the scan tool connected to the data link connector (DLC) to retrieve continuous diagnostic trouble codes (DTCs) and to execute On-Demand Self-Test diagnostics for the 4WAS module.
    • If the On-Demand Self-Test is passed and no DTCs are retrieved, GO to Symptom Chart to continue diagnostics.
    • If DTCs are retrieved, go to the 4WAS Module Diagnostic Trouble Code (DTC) Index in this section.
    • If the 4WAS module cannot be accessed by the scan tool, Go To Pinpoint Test A .
------------------------------------------

Aug 05, 2010 | 2004 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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