The immobilizer light on my Clio is always off because of this it's very intermittent with when it starts up. Usually after leaving the car for a few hours it starts fine but if i turn the engine off and try it again after a few minutes it refuses to start. It will eventually start after several tries but it's extremely annoying. I only have the 1 key for the car and I have replaced the battery. Any ideas with whats might be going on and are there any solutions for this?

Thanks

A wood, September 2016