I ended up changing the actuator but I'm still not able to unlock the door from the remote or from the main switch. It doesn't bother me too much because my wife and my two little girls are always using the back seat. The other thing that doesn't work is the mirror. The window can be opened just from the passenger switch. Other than that the engine is running which is the most important thing so far.

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2012 X70 XDrive 35i