Mk7 Transit remote fob issue

[mmq2015]

Hi All,

I have the 'blue key' remote and recently it started to play up, so I decided to open it up to check the internals; and they all looked good, the battery was showing good voltage on the multimeter, the buttons didn't have any signs of wear.

Before closing it back up again i decided to try out all the buttons again case-less (holding the pcb in my hand and pressing the little buttons with me nails) and to my surprise they all worked perfect. It locked, opened, no issues... but when it was in the case i struggled to get it to open or lock (it did it after a few tries, but not on first press)

soo, anyone have any ideas what's causing this?

Thanks