X3 Door locks

[Paul Newell]

Hi all. Newbie to the forum. I have a 2018 X3 M sport 2.0D I have set all doors and tailgate to unlock when the engine is turned off. Sometimes they do unlock and on the odd occasion they remain locked. Has anyone experienced something like this before. Thanks in advance. 

 

[X5smw]

Welcome Paul. 
is it all the doors stay locked at the same time or a random one?

my Porsche’s rear right started doing it and it turned out to be the door actuator. 
 

if it’s all at the same time every time, I would look at the relays as it’s giving a signal to all doors. Random 1 door will be getting the signal but failing to actuate

[Paul Newell]

Thanks for the reply. It's passenger and rear doors and tailgate, but only occasionally. I'll look at a replacement actuator and see if that solves the issue. 👍