Right, 1 in every 5 times I park and lock the scoob, the alarm goes off for a short period of time then stops!

I had the Sigma ECU replaced about a year ago, does anyone know what could be causing this?

Thanks
S!

faulty ultrasonics mate, get the alarm took off and have somthing else put on.

faulty ultrasonics mate, get the alarm took off and have somthing else put on.

Is that the wee pods on the A pillers?

Thanks
S!

Yes, the ultrasonic sensors are the pods on the A-pillars, but with the limited description of the issue, I dont think that an accurate diagnosis can be performed at this stage.
If this is the standard UK fit alarm system, then try the SIDC site Strictly Technical section for more help.
Even if it is the ultrasonic sensors causing this, I would ensure that they were correctly adjusted first, then replace them as a final measure.
Unless you have money to spare, then swapping the system is a little severe to fix the issue.... along the lines of a new set of wheels and tyres to fix a puncture.