I only have 1 key for my Renault Clio, 2003, 1.2 dynamic. The key was left in a field for 24 hrs and so got full of mud and water. It's been cleaned out by the RAC but still doesn't work properly. If I open the car manaully with the key then it doesn't disable the immobiliser. But zapping the car open doesn't always work. I've been quoted £70 for a new key and £80 for coding the key by my local Renault dealer - any ideas how I can get hold of one cheaper?