here you go... this fixed mine (drivers door)
the problem was that piece of metal that links the handle lock to the lock motor, there was a lot of free play in the linkages and the slightest knock would lock the doors... I undid the bolts that hold it in place and moved it to its maximum downward adjustment thus taking the free play out of the rod that goes to the lock... tightened the bolts again and.... press unlock and it stays open !!
happy bunny !