Fabia 5J 2009 randomly re locking when driving or parked and the alarm is being triggered flashing the indicators and sounding the siren.

I have disconnected the siren by removing fuse 54 to avoid disturbing neighbours, the siren doesn’t sound without the fuse which suggests that its internal battery is worn out.

I found a broken wire in the door wiring harness which was connected to pin 15/28 at the A post plug between the drivers door and the car body. I have replaced the wire which made the door switch (the one that turns off the internal sensors) work again, the alarm was quiet for a few hours but has just triggered again.

Is there a way to disconnect the alarm permanently and keep the remote central locking function, or a way to just use central locking by using the key in the drivers door lock?

Many thanks

I wish I knew of a way to completely do away with the troublesome locking and security system - it's the chief drawback of Skodas and the bane of owners' lives. And it's useless against key cloners.

With the help of Breezy_Pete I have managed to fix the problem.

The solution was to replace the drivers door window motor with a reconditioned one supplied by Pete.

It seems strange to me that a dodgy window motor could cause so much trouble but I guess that’s the wonder of the can bus system.

Many thanks Pete you’re a star!

Glad I could help. 🙂