My older phase 3 espace 2.2dT (pics in my motah!
) has in the paperwork a key information thing.
"Alarm memory flashes LED after the alarm has been disarmed and the ignition key is inserted.
1 blink An attempt has been made to open the bonnet, doors,boot.
3 Blinks The volumetric sensors have detected an attempt to enter the vehicle
4 Blinks an attempt has been made to start the vehicle."
There is a bar above the rear 3rd row seats on mine which went faulty, Its currently disconnected. I think thats the one that listens. Try disconecting that and seeing if it keeps happening. Its a clip very much like a phone wall socket iirc, Very easy to get out.
Let us kow how you get on. Mine has the cobra systems alarm aparently according to this!
Where I used to work had a Espace 3.0 Derv, The latest one, Every lorry that went past set the alarm off on that!