when operating the central locking from the remote the car unlocks fine but wont lock again unless u do it 8 or 9 times i have replaced the batteries in the fob and this has made no diffrence the lock engages but then unlocks again this happens on all the doors not just 1 if i drive the car somewhere and then operate the remote central locking it works fine......please any help will be appreciated its pissing me rite off