The remote does not work on my Fabia ! so have been locking it with the key. For a while a red light flashed on top of the door after locking but for some reason it no longer does. Is there some sort of double locking/unlocking sequence I have done without knowing as some times it sounded like it was locking/unlocking twice?

battery dead in remote??? sounds like the alarm system cant see the fob..

Yes think that's probably the way forward-thanks.