Hi, my partner owns a 1.7 T reg ford Puma.
The other day he went outside to start the Puma. He switched the ignition on, it wouldn't start, won't turn over, and all the lights come on on the dash.
He realised that the interior light was not working, so he changed the fuse, and with that, all the lights on the dash came on, even though the key was not in the ignition.

Has anyone else experienced this problem?

If yes, then please let me know how you solved the problem.

Could it be the immobiliser???

Thanks