Question about 2001 Mercury Mountaineer

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Message says "door ajar" but no door open

No doors are open. My interior light stays on for about 1 minute, my mirror lights stay on for about 5 minutes and if I turn my car off and leave the keys in the ignition, I get a continual chime. If I lock my door with the key faub (?) I get two short horn beeps. Please HELP!!

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  • Anonymous Mar 22, 2014

    Headlight chime, seatbelt light, and parking brake light stay on with doors closed engine on, seat belts buckled, headlights on, and parking brake released.

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  • Mercury Master
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There are 2 things we see on these models. 1st one is it could be a stuck door adjar switch. For this you can try and put WD40 into the latch on the side of the door, put a generous amount directly into the latch then close and open the door several times.This will un-stick a switch most of the time.
2nd thing it could be, open the door and look at the front of the opening between door and A pillar and you will see a black rubber accordian tube running between body and door,this is where the wires run from body to door. Sometimes a wire will break inside this.You can usually verify this by taking a screwdiver and trip the latch so that it shows the door closed(even though u have it open) then wiggle that harness and see if it effects the door adjar light.

Posted on Feb 11, 2009

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  • Expert
  • 13 Answers

The door ajar switch in the drivers door is most likely sticking clean or replace switch which is located in the latch assembly

Posted on Feb 11, 2009

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  • Master
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Check the DOOR BUTTONS in the Jams One is giving the signal for Dome Light and usualy you can Just Roghly Push and reliece them and they get the right connection

Posted on Feb 11, 2009

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Posted on Jan 02, 2017

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97 lincoln town car door ajar stays on and reading lights wont go out when driving what can i do all doors are shut


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Interior lights won't come on when the doors are open.


there is a timer on the interior lights to turn off after 20 minutes.
one of your door switches are bad,and it tells the computer that a door is open and the lights are turned off,that makes sense.
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Cheers CeeBee

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Door Ajar message comes up even when all of the stores are shut. Interior Lights and Lights on side view mirrors stay on. Lights can be shut off but the Door Ajdar message remains on.


I have this same problem. A mechanic friend told me that basically the grease they use to grease the door latches cause a sensor to think the door is open. He said to buy something thtat will break up this stuck grease, but also has lubricating effects. I forgot what he told me to buy though.

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2004 crown vic interior lights stay on


Don't think you have a door ajar switch problem , more then like the lighting control module is the culprit . Does the door ajar light on the instrument cluster stay lit ?
The interior lighting can be separated into two distinct modes of operation: the courtesy lighting and the demand lighting. The lighting control module (LCM) controls all of the interior lighting in the vehicle, as described in the following text.
The front dome lamps, rear reading lamps, and instrument panel courtesy lamps, can be illuminated either by opening any of the vehicle doors (courtesy lamp function) or by depressing the headlamp switch (demand lamp function).
When any door is open, the door ajar switch grounds an input to the LCM which then sends power to the courtesy lamps. The voltage sent to the courtesy lamps gradually increases from 0 volts to 12 volts within 500 ms (± 50 ms), to achieve the theater lighting effect. When the door(s) are closed the door ajar switch(es) break(s) the ground to the LCM input which then gradually reduces the power from 12 volts to 0 volts within 5 seconds. (± .5 second).
When the headlamp switch is depressed it grounds an input to the LCM which in turn sends 12 volts to the front dome lamps, rear reading lamps, and instrument panel courtesy lamps. When the headlamp switch is depressed a second time, it breaks the ground to the LCM input which then ceases to send power to the front dome lamps, rear reading lamps, and instrument panel courtesy lamps.

The battery saver will disrupt power to the courtesy lamps after 10 minutes, the demand lamps after 30 minutes, and the headlamps after 10 minutes. Turning the ignition switch to the RUN or ACC position will terminate the battery saver feature by disabling the interrupt timers and reinstate power to the lamps.
Do you know what DTC'S are ? diagnostic trouble codes !
LCM Diagnostic Trouble Code (DTC) Index DTC Description Source Action B1322 Driver Door Ajar Circuit Short to Ground LCM Go To Pinpoint Test F . B1442 Door Handle Switch Circuit Failure LCM Go To Pinpoint Test G . B1445 Door Handle Switch Circuit Short to Ground LCM Go To Pinpoint Test G . B1563 Door Ajar Circuit Failure LCM Go To Pinpoint Test C . B1566 Door Ajar Circuit Short to Ground LCM Go To Pinpoint Test H . B1685 Lamp Dome Input Circuit Failure LCM Go To Pinpoint Test I . B1687 Lamp Dome Input Circuit Short to Battery LCM Go To Pinpoint Test I . - All Other DTCs LCM REFER to Section 419-10 .

PINPOINT TEST C: THE COURTESY LAMPS STAY ON CONTINUOUSLY CONDITIONS DETAILS/RESULTS/ACTIONS C1 CHECK THE SYSTEM OPERATION Open and close each door, making sure that each door is completely closed.
  • Are the courtesy lamps still illuminated after the 25 second time-out period?
Yes GO to C2 .

No The system is operating correctly. C2 TEST DOME LAMP SWITCH Depress the dome lamp switch.
  • Are the courtesy lamps still illuminated?
Yes DEPRESS the dome lamp switch a second time. GO to C3 .

No The system is operating correctly. C3 CHECK THE LIGHTING CONTROL MODULE
LCM C2145a

  • Are the courtesy lamps still illuminated?
Yes REPAIR circuit 53 (BK/LB). REPEAT the self-test. CLEAR the DTCs.

No INSTALL a new LCM. REFER to Section 419-10 . REPEAT the self-test. CLEAR the DTCs.

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1 Answer

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Spray some WD40 into the latches on the side of the doors then open and close the doors several times firmly.This will unstick the door adjar switch most of the time.Start with drivers door first.

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1 Answer

2002 Sable - Interior light stays on all the time when car is running. When the car is shut off the mirror safety light should only stay one for a short time but stay on for 15 minutes.


you have either the thumb wheel switch beside the headlamp switch is turned all the way up or a sticking door ajar switch.
Does the door ajar light in instrument cluster stay on?
If so then you can shoot some WD-40 into the latches on the side of the doors then open and close them firmly a few times and this will usually unstick them.

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