I finally got the problem sorted.

It was NOT the actuator.. I was so set on it being the actuator, that i bought a replacement, and did'nt look for any alternative problem..

I found out today that it was caused by a bad connection on the window controller on the armrest..

Apperantly this has an effect on the door sensor and the locking when not working properly.

It was the big connector on the controller that had a bad connection..