Question about 2003 Lincoln Navigator

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2003 Lincoln Navigator door sensor problems

I have a 2003 Lincoln Navigator that keeps popping up a Door Ajar reading on the computer. When it pops up the the lights come on inside and on the mirrors. What could be the problem and how do i fix this problem.

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  • Anonymous May 04, 2009

    same problem as marcus isolated to the passenger front door

  • Anonymous Mar 17, 2014

    Need the entry code

  • Anonymous Mar 22, 2014

    it wont connect to the truck computer or read nothing I have several problems I think maybe my on board computer is going bad/?

  • Anonymous Mar 27, 2014

    rough idle on 2003 lincoln navigator



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One of your courtesy light switch's is defective, it can be in any of the five doors (rear hatch has 2), Ford can determine which one (courtesy light switch) is at fault by using a NGS (New Gen Star Tester) to monitor the switches through the Generic Electronic Module of your truck, these switches are attached to the door latch assembly and are time consuming to replace, so the Ford tester is the cheapest option.

Posted on Nov 13, 2008

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  • Contributor
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I support Mr. Dannis for his answer and also try to check your display screen by FORD professionals to check out is it a real or false fault.

Posted on Sep 27, 2011


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E2@yahoo.comi have a 2003 lincoln navigator . the information center keep saying door ajar. i thank a sensor is. where are they located in the door jam?

The door switches are usually located at the front of the door jamb where the hinges are located. Look for a pin-type button sticking out of the jamb. This is called a plunger switch. If you can locate the switch and disconnect the wiring harness, you can use a paper-clip to jumper the wires together to test for a bad switch. Usually a bad switch will cause the interior lights to stay illuminated until the timer tells them to turn off. If this is the case in your situation, you probably have a bad switch/

Aug 30, 2011 | 2003 Lincoln Navigator

1 Answer

The door ajar light comes on when all doors are closed

Has car been damaged ? A pushbutton in a door well is likely problem. Door is not pushing the button in far enough to open it's contacts therefore, computer reads it as door ajar.
Try taping small piece of plastic or metal (one door at a time) in the area that contacts the pushbutton, Then close all doors. Continue thru all doors to find the guilty one.
It's possible that the pushbutton switches may not be visible (mounted out of sight) and use some sort of lever to actuate.

Sep 07, 2010 | 2003 Lincoln Navigator

1 Answer

2003 lincoln navigator running board stay out on passanger side unless your are moving (they retract) passenger mirror does not adjust backig up message continues saying door ajar

You probably have a bad door switch that is located in the door latch.If the vehicle tells you which door is ajar I would try a good penetrating oil first and if not replace that door latch.It will take a bit of working the latch before it will start to work if thats all it is so have some patients with it.

Feb 11, 2010 | 2003 Lincoln Navigator

1 Answer

All of my doors are closed yet in my 1999 lincoln navigator the light reads door ajar. i believe it is my trunk. but now my lights stay on and drains my battery what can i do

Try spraying WD40 directly into the door latches and opening and closing the doors several times. Usually this will free a sticking door ajar switch.

Feb 07, 2010 | 1999 Lincoln Navigator

1 Answer

Were is the door senors of a 2003 lincoln navigator, my dashboard says door ajar

its in the door behind the latch and requires you to remove the door panel. not one of fords better ideas!

Nov 15, 2009 | 2003 Lincoln Navigator

1 Answer

How to repair a door ajar of a Lincoln Navigator 2003. Looks like this does not allow the suspention works properly

try spraying silcone spray in each door latch even the rear hatch door. i have done this before and it has fixed it before. the reason is that dash will get on the sensor and make the light come on.

Jun 15, 2009 | 2003 Lincoln Navigator

1 Answer

Lift gate is closed but still reading ajar. also can't set the alarm because of this.

replace the lift gate/door ajar switches, they are located inside the tail gate on the left and right latch assemblies.

Apr 07, 2009 | 2003 Lincoln Navigator

1 Answer

Receiving door ajar indication on 2003 Lincoln Navigator

Sounds like you have a Faulty Door Switch. When you open the door there is a Small Button on the Side closest to the Inside of the Truck. Push this in with your Finger and see if they don't go off. Some of these are Movable so you can adjust them in and out.

Dec 31, 2008 | 2005 Lincoln Navigator

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