Central Locking & Passenger Side Window

[Grant]

That's because it thinks there is a door open. If you turn the key in the lock and hold it there for a few seconds, it should override it self and lock.

^^^This. If that fails to work, grab hold of the lock tabs and move them up and down manually a few times to check for resistance/to free them up. Mine did this and a bit of white spray grease on the shaft (inb4giggedy) did the job!