esp on traction control on car wont start

[gecko]

Hi My renault megane has been playing up lately.. Sometimes the car wont start... esp on lights up also traction control on comes on sometimes it starts sometimes it dont Sometimes when I put the card key in the control panel doesnt come on The battery is ok I think.. and I put a new key fob battery in a couple of months ago..sometimes if it dont start and I try in half an hour it might..At the moment it is outside my house on the road its not locked cos the key fob appears not working...although If I try in half an hour maybe it will when it starts and drives it drives great sometimes when I put the key fob in it lights up sometimes it dont sometimes when it does light uo it just clicks and goes dead Thanx in advance for any suggestions