Random Door Unlock Issue, Central Locking Button Not Working?

[Len]

Hi,


I posted about this about a year ago but was not driving the e53 often at the time. Recently started daily driving it and starting to have issues. I have a passenger on my morning commute and bags go in the rear so all doors get opened. When getting into the car I've started having issues with the rear doors not unlocking half the time, and it's getting worse. Interestingly I also noticed the central locking button won't work when this happens. A bunch of lock/unlocks later and they finally open. Worried that I'm wearing out the front actuators trying to get the rears to unlock. I don't think it's the rear actuators since both fail at the same time. I read on other threads that it could be the general module but surprised that door locks would be the only noticeable issue caused by this? Also wanted to mention I use the I-BUS app and had a battery drain issue due to it around 8 or 9 months ago which was solved by resetting the app. I don't think it's likely but maybe the app is causing issues again?


Another issue I had today was my passenger couldn't open the door and pulled the handle about 5-7 times before it randomly opened. I'm not 100% sure that this was not user error (lol) but if it happens again I'll make sure to update the thread. IIRC the door lock indicator was up but months ago I did have issues with the passenger door lock which I think is the actuator.



Would really appreciate the help if anyone knows what's going on with the rear doors!


Thanks!