My Corsa SXI CDTI (04) has a CD Radio which i cannot get to stay on!!!!! If i press settings, then toggle to ignition on and then turn the ignition off it sometimes comes on when i next start the engine. However most times it doesnt and every time i get back into the car it is off !!!! Its driving me mad as i now have to listen to my Mrs talking all the time and i may have to stop driving as she is driving me mad with inane chat about shoes and shopping and handbags etc...............help....