Opel Astra H not starting after replace headlight

[Dunker]

Check live data for immo. Check statuses.

[manio112]

as far i remember on 1.7 astra h engine ecu its under bumper so when you change headlamp some wire ben damaged take bumper again and inspect

[Sauro1978]

Control key status (key in,key star,key run).
you probabily have a locksteering problem contact

[Meat-Head]

ON TOPIC:-

put your chin in middle of battery and your tits on passenger wing, look down focus on chassis leg, don't come up for air until you spotted earth point, had one where nut missing from factory