I've read about owners adding an illuminated ring to the ignition and then vehicle not starting. I do not have this but it makes me think i may have a problem with the immobiliser
I sometimes turn the key and lights come on, temporary lights go out and then instant start. Other times short pause, up to 5 seconds or so then start. Sometimes have to try again and instant start.
Today it wouldn't start after a number of tries, key out try again still nothing. Try again and starts. Not sure how many times. Later on, starts fine and then it wouldn't start, open door close, key out, in and so on. Took seatbelt off got out, opened rear door for something, back in again, starts instantly.
Any ideas? New key battery, does that affect the immobiliser?