61 20 503 Vehicle battery - closed-circuit current monitoring
WARNING: This page is about a different car, the 2011 BMW 750xi, 2011 BMW 750Lxi, 2010 BMW 750xi, and 2010 BMW 750Lxi. However, it is still accessible from the selected car via links, so may be relevant.
Necessary preliminary tasks:
To access negative lead of battery, perform the Necessary preliminary tasks described in DISCONNECTING NEGATIVE BATTERY CABLE .
Do not disconnect negative lead of battery.
Connect BMW diagnosis system.
Connect clip-on probe to negative lead of battery. The arrow on the current clamp must point towards the battery.
Measure closed-circuit current.