van wont start?

just bought second hand kangoo .everything working fine till yesterday morning when plugged in my mp3 player into stereo and now the van wont start .tryed disconnecting the battery but still nothing .all the lights are coming on and stereo still working but imob iliser light seem to be intermitng and even when i take key out of the ignition dash light still stay on for about 3 mins

davie
March 2009