Something i noticed today that could be one of the reasons my car keeps telling me that Increased battery discharge warning....
My car has comfort access and i find that my remote has a unusually long range compared to any other car I've had before. I park my car behind my condo and I am on the 3 floor.....I usually leave my car keys in my room or my office. I could walk half way through my condo and still be able to lock and unlock my car. I never could have done that with my old E90 which also had comfort access. I think when the key is within range of the car it prevents the ecu to go to sleep completely? The only reason i suspect this is because when I asked my bmw tech buddy about my car and one of the first things he asked me was do i keep my keys in the car.
I am going to keep both my keys on the opposite end of my condo or place them inside a metal box to see if it does anything.
Current - 2013 N55 535xi Msport SAT
Retired - 2009 N54 335i Msport 6MT
Retired - 2000 M52TU 323i ASA Supercharged 5MT
More photos of my car here