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Battery drain
Have 2003 Z4 2.5. After 2 days of no use the battery is dead. Have brand new battery, checks out good (after several checks). Needs 6 hour trickle charge to start it up. Anyone heard of issues or common switches that go bad? Obviously a battery drain, but cant locate it. Have turned all switches off, top up, top down....no luck isolating issue. As long as I start it once per day and drive for a bit, things seem to be fine. I am stumpped! Any help is welcomed!
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