peugot boxer 2.2l deisel?

hi my key has snapped away from fob, now i cant start van, the key i manage to get a hole drilled in itand have a sturdy key ring which the fob is on. the engine turns over but a car with a padlock has lit up on dash (which i assume is van is immobilised) since key broke.
i had replaced terminal grips in the mean time but still the van turns over, the van ran fine before key snapped.
please help me any suggestion???