Can any Landie owner help me here. I have a TD5 06 plate, when I turn the key the engine management light comes on (one with the thunder bolt through)as well ( flashing) after a while it will go out and the landie starts up no proble…..if I try to start before hand after the heat coil light goes out it will not start, could this be the immobilise…..notice the battery has gone on the fob and having to use the key.