I had a crash in my Fiat Brava and the fuel cut off has been activated how can I turn it back on

check your owners manual, it might be in the rear trunk area or passengers kick panel..

there is a button beneath the drivers seat . l think .

theres no buttons under the driver seat. take it to your local dealer. the fuel cut off is automatic and turns on during accidents. in some cars u need to change the cut off, dunno about the fiats. shouldnt be a problem though