I have a Fiat Stilo Abarth with driving wheel on the left (I live in Valencia, Spain). The car is great but for the automatic gearbox which my local official Fiat garage does not know how to fix.

The car stops dead when I reduce speed from 5th gear, when I go over a bump, or tram-lines. I can usually get it going again, burt now it has stopped altogether.

When I open the driver's door, from the bottom right-hand side, there is a high-pitched continuous beep, similar to the warning when I am reversing the car, and when I start the car a message comes up saying "Problem with the gear box. Return slowing to your repair-garage" the problem being that the car goes nowhere, not even on manual.

I think the problem is electronic, but please help because I am a disabled pensioner and live in a village with no public transport-