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2017 Nissan Altima — battery dies after the car sits for a weekend

HighwayGeek802Community StarterApr 15, 20262017 Nissan Altima 2.5 SVCleveland
2017 Nissan Altima 2.5 SV, about 120,000 miles. Battery passes a quick test and charging voltage looks normal, but after two or three days parked the car sometimes will not crank. What is the cleanest parasitic-draw test on a modern car that takes time to go to sleep? I am trying not to assume the first explanation I see online.
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NoMarkupHunter219Community StarterCommunity StarterApr 16, 2026permalink
Log the conditions before you spend. Two 2017 Nissan Altimas can feel identical and have different causes, so measure before you copy someone else's repair. Don't erase codes until someone who can help has seen them. On “battery dies after the car sits for,” that was the fork that mattered for me. Do that first. If this is nothing, great. I want that in data.
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