Originally Posted by WW08M3vrom
Would leaving my iPhone USB plugged in w/out phone wear down the battery?
No. Car goes to "sleep" approx. 15 minutes after shut down/doors locked and that cuts power to all outlets in the vehicle. USB cable or even an iPod will not draw any power sitting in the car. I have a dedicated iPod that stays in the center console and have never had an issue with the battery in either the M3 or my previous two E60's...
2011 Space Grey E90 M3, DCT, Comp. Pkg.
1997 Z3 2.8, Artic Silver, Tanin Red interior, MT
1974 2002tii, Inka, 5 sp manual
BMWCCA # 327475