Electrical, Battery & StartingDiscussionCommunity Starter

Anyone else: Battery keeps dying after two or three days parked

TrailLearner77Community StarterJul 11, 20262024 Ford F-150 Lariat 3.5 EcoBoostUpstate New York

2024 Ford F-150 Lariat 3.5 EcoBoost, about 151,000 miles. Battery tested okay at a parts store, but if the car sits for a weekend it sometimes won't crank. Alternator voltage looks normal while running. How would you narrow down a parasitic draw without pulling every fuse blindly?

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2020 Ford F-150 Lariat

$38,900

Oklahoma City, OK

1 replies

FlatSixTech31Community StarterCommunity StarterJul 12, 2026permalink

Log the conditions before you spend. Write temp, speed, and in-gear vs coast when the 2024 Ford F-150 does it — then decide on parts. Don't erase codes until someone who can help has seen them. On “battery keeps dying after two or three,” that was the fork that mattered for me. If you share a photo of the worksheet, easier to sanity-check. Climate here is different, so treat that as a local data point. No warning lights, which is why I'm documenting it.

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