Question about 1999 Chrysler Cirrus

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Why do my automatic locks keep locking and unlocking, even when I'm not driving my car?

I have not tried anything, except calling my mechanic and he doesn't know why. He did put in a new distributor the other day.

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  • 38 Answers

On your car, Chrysler saved a lot of weight and wire by having virtually everything on a "bus" or a set of wires that carries signals to different devices. This is how they "tied" in things like being able to select whether the doors automatically lock when you hit a certain speed. There is a "computer" that receives information and sends out commands to and from various parts of the car, including the door lock mechanism. In short, something is causing the lock/unlock command to be seen by the door locks. Now you just need to find out what.

Another possibility is something as simple as an intermittent power or ground to the door lock electro-magnetic operators, but it would have to be something that affected them all and not just one. A vehicle schematic diagram would help.

I have seen Chrysler products have strange "gremlins" of this sort (or the windshield wipers turning themselves on and off) when there is a low voltage condition. Is there any chance you have a weak battery or poor battery connections?

Posted on Nov 26, 2014

  • Anonymous Nov 26, 2014

    Rob is 100 % correct good job there I will not go into Can Bus & a long story to folks that never work on a vehicle that won't help get into a shop or dealer to find a problem

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Hello P. Pine,

By any chance do you carry your keys in a back pocket ???

Just kidding.

Intermittent problems are the worst ??. Just as an experiment, take the batteries out of your remotes and see if the issue goes away. Maybe one of them is sending a random signal due to a sticky/defective switch. Also, while you can't wiggle wires inside the doors, try slapping around the doors to see if a loose wire is triggering the situation (unlikely).

Finally, I would join a users group and enquire there. May be a common malady.

All the best.

Posted on Nov 26, 2014

  • Anonymous Nov 26, 2014

    I agree If your going to spend any money or try & find the problem Join a Forum

  • Anonymous Nov 26, 2014

    I meant NOT spend money or fix it

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  • 26 Answers

I'm assuming this only started happening after he did the distributor work? if so, then he needs to take the car in a check it out.

It could also mean something has gotten into the fob (pocket lint, liquid, or ???) that's causing a short in the circuit board or causing the buttons to stick. Take the battery out of the fob and see if the problem stops. If so, open up the fob and clean it out.

Posted on Nov 26, 2014

Well-- no mechanic or us here, will guess at any vehicle issues

It simply is not possible

Since they just worked on it ,take it back

Could be you had two issues

So do not assume they caused the second one,
at least give them a chance to find the problem

That is why the auto industry has a bad name & is
disliked for 50 years,because you have to be there
& build a relationship & understand their issues in
trying to help your car (not you) your car

Posted on Nov 26, 2014

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sounds like your door locking mechanism just gave out. If your able to get the other door to unlock then it must be your door mechanism is shot.

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SOURCE: Automatic door locks will not work.

you need to take it to the dealer and have them check the bcm for codes.... also have them check to be sure you have the latest software in the bcm.. its possible that you just need a software update... there are several TSB's covering the concern you have..... it can be a very simple fix with software or even a stuck lock switch may need to be replaced... without the proper diagnostic codes being read from the bcm all that can be done is guessing..and that can be expensive...

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SOURCE: door ajar light on and locks keep locking and unlocking

need to gain access to the BCM to see which door the module is seeing open. the locks won't lock with key in ignition and a door is "open"

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Testimonial: "thank u for helping, but i dont know how to gain access to it to find out. And also thank you for answering the other question i had...I did find that..."

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1 Answer

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