Car Questions

Notifications
Clear all

2004 Lincoln Town car acting up

   RSS

0
Topic starter

Hello, my name is Jon from plant city florida. I have a 2004 lincoln town car ultimate, 108k miles auto trans. My car alarm, cabin lights, and door ajar dash light all turn on at random. Any way to fix this?

can you help me?

1 Answer
2

Sounds like the door ajar switch on the door jamb needs to be replaced

How do you tell which door is faulty? I was told my door switch and door jamb is one piece

Jon, I checked in earlier and noticed you needed some clarification.
Sometimes the door switch is in the pillar, sometimes it's attached to the latch. But they're exactly the same type of "pintle" switch and they work exactly the same.
.
So I looked up your car and your door switch is on the latch.
.
It's the same drill. Just a little harder on your latch mounted one.
.
What usually happens, because of their locations, they get crudded up and the pintle gets "sticky" or stuck. (Occasionally, they do break).
.
So, you could get a can of WD40 (with that little straw that comes with it) and spray (a lot) into the door latch. The switch is around the bottom of the latch, but it would still be "hit or miss" if enough gets on the switch's pintle to clean it off.
.
So likely you'll end up having to replace it. But it's a little more work for you because you have to remove the interior door panel and peel back the water shield, and then remove the 3 screws that hold the latch to the door and disconnect the rods from the latch to pull it out and replace the switch.
.
So I can see why you'd want to test to determine which door switch is acting up but unfortunately you can't do that without removing each door panel, one at a time, and then jumping each switch connector.
.
I found a video of Brian Makuloco explaining how to use a paper clip to jump the door switch, as well as how to replace the switch on a Ford Taurus. Yours is similar if not identical and I'll attach it at the end of my reply. Just be aware, yours is happening at random so it's an intermittent issue. In your case you'll have to jump each switch one at a time, maybe use electrical tape to ensure the paper clip stays in (it's a ground circuit so you don't have to worry about it shorting out), and then replace the door panel, drive the car for a while and see if the problem goes away. When it does, you've identified the problem switch.
.
So which door do you start with? Your guess is as good as mine but I'd start with the driver's door because that one usually gets opened the most and dust/dirt enters through the latch opening.
.
So what actually happens when the switch fails is that either the interior spring inside it breaks or enough crud collects on the pintle where the spring can't always return the switch's pintle to its extended NC (normally closed) position when the door is closed and it looks like this (the sticking one is on the right):
.

.
So the animation shows the white switch's connector being disconnected and how you'd use a paper clip to jump the ground circuit at the connector. You don't have to remove the door latch to do this.
.
After the .Gif I'll post the youtube link which I hope will be helpful.
.

.

((On a side note, Jon, please understand that none of us "work here". Maybe consider before recording a down vote, give the responder 24 hours to reply. In my case, I logged in earlier, saw your response, but didn't have the time to compose a reply which I thought would be helpful to you.))
.
(((Another aside, you're in Plant City, although I can't reveal my true location or identity, I don't live that far away from you in another rural area of FL)

Share: