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3 Step Cleaning & LubeThis is a common problem and is caused by the door switch plunger sticking (due to dirt, other elements or rust). This can often be corrected by performing the following:

1. Thoroughly spray the door switches (on each door) with:

  • Cleaning spray - clear the sludge out of the mechanism - electronic contact cleaner, carb, brake, etc
  • Air, canned or even better, from a compressor
  • Spray lubricant - a dry lube (best), silicone spray, WD-40 or similar

2. Open and close each door several times to work the lube into the mechanism

This is usually sufficient to clean the electrical & plunger mechanism inside the door switch.

If this doesn't work, you could remove the door panel and do the spray treatment from the inside also.

My 2000 expedition does the same stupid thing! Try spraying WD40 into the door latches. This seems to work for me with the back window latch.

if your truck has been broken into or you have had an accident and the door was fixed, the sensor that tells if the door is shut or not is still broken. and since it is the driver door, the dome light stays on because when you open the driver door it is supposed to turn on

same problem as the Taurus and Sable Dome light problem. I just bought a 1998 Ford Taurus SE and right away I noticed the Dome light wasn't even coming on. The 2 map lights did work. I asked the previous owner about it, but he had no idea. Today I bought a new bulb and noticed that the light stays on forever, and the door ajar icon stays lit. I read through some of the respondes posted for the problem, so I tried the WD-40 idea and it fixed it in 30 seconds. What you need to do is spray light lubricant (WD-40) on the drivers door latch. This is right at the end of the door (where is swings away from the car). You'll see the latch looks like plastic. Give it a few sprays, then open and close the door several times. If it works, the light should go off in about 30 seconds, and the door ajar light will go out. What must be happening is that the door closes, but something is sticking, not allowing the switch in the door to close. Spraying on the lubricant loosens this up, and in my case fixed it right away. . Regards, Doug

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โˆ™ 2015-07-17 17:37:14
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Q: Why do the dome light and the door ajar light stay on in a 2001 Ford Ranger truck?
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