Citroen Saxo - Flashing Immobileser Light - Kev.B

Hi,

The problem I have is the immobileser light on my saxo has been flashing meaning the car won't start until the light goes out. I normally just have to take the key out of the ignition and put it back in and it evenually works. I've heard its a common fault on Citroens so I ordered a transponder aerial which is meant to solve the problem.

I've fitted the new aerial and it hasn't made a difference, does anyone know what else to try as I know if I take it back to Citroen I'll get stung in the pocket which I really want to aviod not that I can take it anywhere as the light permantly flickers now :-(

All and any advice would be great as I'm stumped and dreading a huge bill right now to fix a car that I want to sell in the next couple of months.