Ford Fiesta zetec wont lock?

Hi I have a Ford Fiesta Zetec 06 and theres a problem with the locking system every time I try locking it from the buttons on the key it locks then un

Hi I have a Ford Fiesta Zetec 06 and there's a problem with the locking system every time I try locking it from the buttons on the key it locks then unlocks straight away also does the same thing when I put the key in manually any help?

or:Hi I have a Ford Fiesta Zetec 06 and there's a problem with the locking system every time I try locking it from the buttons on the key it locks then unlocks straight away also does the same thing when I put the key in manually any help?

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