Hi my mate has recently purchased a 2005 Holden Vectra 2.2L and it won't start. The dashboard lights up all the lights come on but it's not cranking or switching over, it's just nothing like no sound. There's also a padlock light that pops up on the dashboard, what does this light mean? If it isn't the transponder in the key what else could it be? Help please if you can or know anything about these cars.