As title, 1999 3 door mk4 gti 1.8 20vt.
It's done it a couple of times, where you pull the door handle and nothing happens, so you have to go in the passenger side and pull the inside lever, the first time nothing happens, the second time it releases the door.
It's done this maybe 3 times in 12 months.
However every time I've left the car a bit after locking it for a few hours and trying get in, in the last 2 days, it's done it again.
What could it be? And is it gonna be a ballache to sort. I noticed maybe the catch is a bit sticky so I will WD40 it when it's light also...