My daughter has a 2015 Fiat 500 1.2-litre, which she's had it for two years. The transmission light has come on whilst driving, and the car completely stops and will not restart. We left the car for a couple of hours and it started again but a few days later the same thing happened. I've been told this is a common problem for this car and to repair it can be very expensive, in the region of £3000+. It appears that some garages are unwilling to take a look as they've said it's a very awkward part to get to so my daughter is very concerned. Can you please advise? Thanks.