Hi I've got a 06 2.2 cdti ex I had a dud battery kept hook flat if I didn't use the car everyday so got a new battery connected it but got the flashing green key as many *** hav had tried the fuel cut off switch was fine so phone Honda and got it towed out to them a day later they phone and say they've fixed the immobiliser problem it starts fine now they said its a common problem but the key doesn't work on anything else!?(worked fine before sent it to Honda) So it doesn't lock the car or unlock with the fob dunno if it manually locks with the key or not was my gf they phoned 😁 lol but they said they've never seen this before so need to talk to Honda hq and talk to the technical dept later that day they phone the gf again and say they got a list of things to try from tech dept and they've all failed! So he he's to her u might need a new key but there a bit pricey 😁😥even tho it was fine before it left. But he says they'll try other stuff before they resort to having to get a new key. Anyone else had this problem ? Or know what it could be and should I be the one to fork out for a new key ? Thanks Jamie.