I have just bought myself an mp3 400ie that needs a bit of therapy, it has an immobilizer fault, its been stood a fair while and when you try and start it you get a single flash followed by 3 more flashes then it comes on permanently, iv'e have searched google and it tells me that the transponder is not recognised ?
Possible reasons for the transponder not being recognised.
1. The wrong key is being used. It is possible for two keys to have the same cut profile on different vehicles (there are limited number of profiles). If the keys were mixed up you could turn on the ignition but the immobiliser would not recognise the chip. 2. The key you are using has not been programmed into the immobiliser.
the wierd bit is i have both the master and the service key and i even have the code card ??
Any ideas or possible next step ??