Mine is 1.5 years. Note your surroundings. When I am picking up my pizza, there are many powerlines overhead. I can lock the doors, open the boot but I can't unlock the doors! Tried with both keys. So interference could be what you are experiencing.
With the boot release button, you have to hold it for 2 seconds. It's a safety feature. Even the button is recessed to avoid accidental release. They do this because they can't get the boot to auto-close just like the door's auto-lock.
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