Central Locking Quirks - GM5 or Lock Actuator?

[AWE46M3]

After performing a window setpoint reset, I’m now having issues with my central locking. I rolled the window down, then up all the way, and held the switch in the up position for 60 seconds to set the upper limit—so the window would drop when pulling the door handle. I was relieved that my GM5 was working properly… but now my car is getting the last laugh 😅


The reset fixed my window issue, but now my central locking is acting up. The passenger-side door (where I performed the reset) no longer unlocks with the key fob button. Thankfully, the driver’s side door locks and unlocks normally, and the trunk unlocks and opens with the button just fine.


Oddly, the center console lock switch will lock everything, but it won’t unlock when I press it again.


Could this be a sign that my GM5 relays are failing? I did swap DME’s recently after installing my airbox. I know the GM5 and DME are not linked but wanted to call this out in case it was relevant.

Thanks in advance for your input

[Slideways]

Typically GM5 relays. The original ones go bad eventually.

[Ramps]

I had a passenger door that would lock, and only sometimes unlock, didn’t matter if it was the central lock button or key fob, both were the same, lock worked, unlock usually didn’t. Sometimes locking and unlocking a few times would get it to work. A new door lock actuator fixed it for me. Pain in the ass to change.

[AWE46M3]

Thank you both for your input. Got 1 for GM5 and 1 for lock actuator 😄

Anyone know of a way to read fault codes off of a GM5? I assume it registers faults if it is indeed failing.

I have most of the standard BMW tools on my laptop. I assume INPA can check for this but don’t know the menu path to get it

[sapote]

I had a passenger door that would lock, and only sometimes unlock, didn’t matter if it was the central lock button or key fob, both were the same, lock worked, unlock usually didn’t. Sometimes locking and unlocking a few times would get it to work. A new door lock actuator fixed it for me. Pain in the ass to change.

But maybe a new relay in the GM also fix this problem -- pitted old relay contacts doesn't have enough current to move the old sticky actuator.