E90 central locking on / off randomly

[Juboy]

Hi,

My E90 320i central locking will get unlocked / locked randomly while I'm driving the car and squeaking sound from the locking
mechanism at times (while the door remained locked).

Otherwise, I can lock / unlock via FOB with no problem and auto lock setup at 20km/h is working too.

Search the forum and doesn't seemed to be similar to the fuse issued reported. My battery reading is at 14.0+v too.

Appreciate any comments as to what could be the caused of this problem.

 

[Juboy]

Just to update :

Problem caused by a faulty door actuator on the driver side. Got it replaced last week and no issue for the past 1 week.

 

[jarance]

How much for part and labour?

 

[Juboy]

RM 925 (replaced at a workshop for BMW).