I have an N reg renault clio which i am trying to get on the road ASAP. the car has an alarm and an immobiliser fitted. the battery needed changing so i have done that and the car started fine, but the alarm will not switch off, although using the key fob it does switch off the lights from flashing but the siren doesnt stop. if i disconnect the alarm from the battery the car wont start due to the immobiliser. what has caused this? could it be the battery being disconnected? any advice on how to stop it? thanks! Its a 1400cc N reg renault clio, 3 door.