Vauxhall Vectra immobilizer problem

Sounds familiar. I had similar dramas with my Vectra. Engine cutting out, immobilizer light flashing like a disco... Is it happening with both sets of keys? Have you tried the spare? I'm thinking it could be a dodgy key signal, maybe the transponder is on its way out. Has it had a new battery recently? Worth a check!

Yeah, I've tried both keys and it's the same problem with both. I've not changed the batteries recently, but I can give that a shot. When you say 'dodgy key signal', what exactly do you mean? Like, is it something I can fix myself, or am I looking at a trip to a mechanic?

Right, both keys doing it points away from just a flat battery. When I say 'dodgy signal' I mean the signal from the key to the ignition control unit. I wouldn't mess with it yourself. I ended up taking mine to a workshop, turned out the key needed reprogramming. Cost me about 45€. Best bet is to get it looked at by someone who knows what they're doing. Could be an immobilizer fault, but you need the right gear to diagnose it properly.

Okay, cheers for the advice. Sounds like a trip to the garage is in order. I was hoping it was something simple, but I don't have the gear to mess with key programming. Thanks again!