[Niall_Jack]

The other day I went to go into my car and clicked unlock on my key. The car made the noise of it unlocking but all doors do not open. Including the boot. I had to manually put the key into the door to open. When I am in the car, the inside lock button will flash at me and then I can click it to lock the car of which you can hear it lock again. The boot opens fine but only when I hold in the “open only the boot” button on the key.

 

[Jack Daniels]

Locks start to play up when the car's 12v battery is low on charge. You could try charging.
The 3v battery in the key could be replaced too, if you have not done that already.

Do you have another key, how does that function?