Paulwilf

Central locking faults

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Hi my fusion decides not to lock. Well it does but then unlocks straight away. If I lock all the doors shut driver's door then lock it still locks then unlocks. if I lock with the key I have to hold the key locked then it locks, unlocks then locks but it will then at sometime unlock again.!!!!!! Any ideas????

 

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11 hours ago, Paulwilf said:

If I lock all the doors shut driver's door then lock it still locks then unlocks. if I lock with the key I have to hold the key locked then it locks, unlocks then locks but it will then at sometime unlock again.!!!!

First check the door ajar switches. These activate the interior light and the door open warning LED, so are easy to test. It will not lock if one of these wrongly indicates the door is not shut.

Then I would suspect "locked" signal from a lock is not happening, either because the lock mechanism is jamming, or the sensor is not working. If there is a problem here, it usually means dismantling the door, to get at the locking mechanism. That is a bit of a fiddly, long job on a Focus, probably no better on a Fusion.

The door ajar switches are also built in to the locking mechanism.

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Had this problem on mine. Ended up taking the entire door card out to get to it. Not a fun job. You might be able to simply short circuit the door ajar wires from the door wire cluster. -bit of a bodge though.

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On 7/28/2017 at 2:09 PM, Paulwilf said:

Hi my fusion decides not to lock. Well it does but then unlocks straight away. If I lock all the doors shut driver's door then lock it still locks then unlocks. if I lock with the key I have to hold the key locked then it locks, unlocks then locks but it will then at sometime unlock again.!!!!!! Any ideas????

 

I have the same problem. Keep locking the car and it unlocks. Or when I drive off i see the car door red light on and the interior light stay on, so I have to keep opening and shutting the door. According to the German Focus Forum, its a micro-switch on the door lock. You need to spray loads of WD40 into the lock to cure the issue.

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