Boot not locking woes
 

Having trouble with the boot not locking when locking the car on the remote fob? noticed the key not working in the boot lock either? :(

Anything i need to check pretty sure it used to lock with out any problems from the remote

It will open and set the alarm off now - helpful

The lock is probably gummed up. That's quite common and likely to be a separate issue to the central locking. I showed how to strip it down in Vera's workshop thread.

The central locking could be a vacuum leak - thats also quite common. Is the pump running for longer than normal?

Coincidentally, this happened to me yesterday. Needed something from the boot and it was pouring rain outside. Pressed the unlock button on the fob as I rushed out and opened the boot... and the alarm started going off. Grabbed what I needed, reset alarm and went inside.

A couple of hours later, I went out to the car, scanned it and got two errors relating to the central locking. One was the boot alarm and the other was the central locking pump over-running. Did some Googling, went outside, unlocked car and then locked it again with my ear to the boot lid, and I could hear the vacuum leak. From the symptoms, it's either the boot vacuum locking mechanism or the tubing has perished where it attaches. Not had a chance to confirm which as yet.