I will be leaving my car in a airport car park for a few weeks shortly and am worried about how the alarm works on this model (Ford Focus 1.6 Titanium, keyless entry 2011)

If the alarm was to go off, how many times does it go off and then what happens when it stops, does the car stay locked, immobilised etc?

The reason I ask is my old car I had a VW Passat and it sat in the car park, it got nudged in car park and alarm went off, when I landed and tried to drive off the car was immobilised and I had to get RAC out, they told me it was due to the alarm going off and not being reset.

I am sure my car will be fine but want to know what to expect when I get back home in a few weeks if the alarm has been sounding. I am even considering leaving at home on the drive, although the same question would still be there incase it happend on my drive.