Both of those replies convinced me of one thing ... I'm probably best off letting the local garage find the problem

Incidentally though, I do have a spare ecu, the engine in the car was changed last year and with the engine came an ecu with a red key

Having just read a bit about PATS it sounds like that could be a master for reprogramming the ecu that came with the engine to work with my existing ignition key

Am I correct in thinking that?


By the way, when I switch the ignition on two lights go out, abs and with what looks like a picture of an airbag to the top left

Battery, oil, handbrake and the one with a picture of a car (check engine?) all stay on, these usually go out once the car is started

I'm not even sure which LED is related to PATS, never even heard of PATS until I saw it in your reply so I don't know whether any of those I mentioned relate to PATS or not