F10 / F11 (2011 - 2016)
2013 BMW 535i(F10) Noise, Engine? or AC?
During driving, I can hear the noise from 2500-3000 rpm.
So, I tested and found it as below.
In P mode, when the engine is kept at 3000rpm and the A / C is turned on, it falls to 2100-2200rpm. And when I turn off the A / C again, it goes up to 3000rpm.
A...