Originally Posted by Lemans_Blue_M
Very surprised indeed...
My M3 is basically driven on the weekends only
these days, and I haven't had any issues with my mini battery crapping out on me after sitting for 5 days at a time. (even on very cold Saturday mornings)
Take your car to Tom's shop, so he can test the charging system and your 'key off' current draw load.
Tom will be able to see if all
the factory installed modules in your M3 are going into sleep mode
like the are supposed to...
Also, don't leave things like phone chargers, ipod adapter/chargers, radar detectors, and VBOX performance data-logging computers, etc. on in the car all the time. (unplug or turn off that stuff when you get out of the car)
It's absolutely essential to monitor your key off current consumption very closely, and to develop a very strict routine that limits your exposure to external current sapping accessories. (which can drain your battery in between trips)
I already warned potential owners about the limitations of this smaller than stock battery from the very beginning...
All good Bro, and you did warn people, maybe it's the DCT? It may not be a problem on a 6mt, like the SMG vs. 6MT on the E46, not sure, I already swapped the stocker back in.
Tom we need to talk more about installing that Escort system!