5-Series (E12,E28, E34, E39, E60)Chat relating to the BMW 5-Series of all generations. Specific models include: BMW 518, BMW 520, BMW 520i, BMW 530i, BMW 528i, BMW 530i, BMW 518i, BMW 524d, BMW 525i, BMW 525e, BMW 528e, BMW 540i, BMW 535i, BMW 520d, BMW 525td, BMW 525d, BMW 530d, BMW 525i/xi, BMW 530i/xi. (BMW 5-Series Forum)
Most likely, it's in a compartment in the back of the trunk opposite from the driver's side. IMO, use as close as possible to the OEM type of battery. Most good auto parts stores will have a very good match.
Thanks its done. Used a little common sense. I hooked a battery to the jumper posts in the engine compartment. This made the car think it was still attached to the battery. I replaced the battery by only disconnecting cables at the posts. All is perfect now. No resets to deal with .
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