hi all,
had a fun but icy day at cadwell on sat, i was loaded and ready to go but nephew's mk5 fiesta van 1.8 turbo diesel had flat battery at end of day , no credit on his phone, late for work, then broke and lost top fob of his keys! can we get away with changing keys locks and transponder jobbie or does ecu need changing? know it has immobilizer , had a feeling that fuel pump was connected to ecu? any ideas, other than scrapping!