Can you disconnect a e53 battery for storage???

[andrewwynn]

At least 4x a year somebody on xo either can't start there car or had some horrible electrical gremlin happen after long term of dead battery. Zero percent chance I would leave and BMW without a battery connected other than momentarily to replace it. (many will hook up a maintainer or parallel battery at the b+ during the swap to never have the voltage drop)

[StephenVA]

^ that is the recommended shop procedure

[cn90]

Everyone here knows it is a pain to d/c the ground cable in the trunk bc of the spare tire lying on top of the battery.

Let's say one just wants to prevent a battery drain and do not have a charger (sometimes ppl park at airport for wks) etc...

Does anyone here know the fuse(s) that feed whatever item (such as ECU etc. that creates parasitic drain) that one can simply remove to prevent current drain? Then once you return (let's say at the airport etc), simply reinsert the fuse(s) and drive away?

Thanks!

[Bdc101]

Bold of you to assume only ONE thing parasitically drains these cars ��

[andrewwynn]

The risk is throwing out your ews sync. BMW specifically demands not to let battery go dead


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[cn90]

Let's say we pull the fuses for ECU and GM modules, is it sufficient to avoid battery drain?