61 20 503 Vehicle battery - closed-circuit current monitoring

WARNING: This page is about a different car, the 2013 BMW Z4, 2012 BMW Z4, 2011 BMW Z4, 2010 BMW Z4, and 2009 BMW Z4. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Observe SAFETY INSTRUCTIONS for handling vehicle battery.

Necessary preliminary work

Clamp off BATTERY NEGATIVE LEAD
Disconnect Both negative battery cables

Connect adapter for closed-circuit current measurement.

Connect BMW diagnosis system.

Measure closed-circuit current.