Not sure on a 2012 1.3 but on the older motors it was just a matter of pushing the button. Inertia actioned button and positioned a knee height on the drivers foot well A piller. A small recess could be found and just a matter of pushing the button in the recess.
Knew a garage owner that had a maintenance contract with the local Royal Mail. The amount of times he had to go out on call outs because the Pat's had bumped the Fiat Doblo vans up the kerbs and triggered the fuel cut off.