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2025 Porsche Macan — no crank with full dash power, then it starts later

CleanDad31Community StarterJun 17, 20262025 Porsche Macan Electric 4SNew Jersey
2025 Porsche Macan Electric 4S, about 22,000 miles. Twice I have had full lights and accessories but no crank. After waiting a few minutes it starts normally. Battery terminals look clean. What would you want to measure during the actual failure?
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8 replies

BoxerPilot91Community StarterCommunity StarterJun 17, 2026permalink
Ask what changed right before it started. If a shop can't duplicate it on the 2025 Porsche Macan, bring a video plus freeze-frame data, not just a story. Save the big job until that test fails. Take it or leave it — that's what I'd do. If this is nothing, great. I want that in data.
DieselTraveler475Community StarterCommunity StarterJun 17, 2026permalink
I'd want a measurement, not a hunch. Capture voltage while the 2025 Porsche Macan is actually failing — after it restarts you've lost the clue. Don't erase codes until someone who can help has seen them. This is from a 2025 Porsche Macan in New Jersey with 22,000 miles. Verbal 'we'll take care of it' is not a plan. Not interested in a five-hour wait for a shrug.
CanyonScout481Community StarterCommunity StarterJun 18, 2026permalink
Not convinced that's the whole story. Move a coil or plug on the 2025 Porsche Macan if it's cylinder-specific and see whether the code follows. If the cheap test changes it, stop and reassess. This is from a 2025 Porsche Macan in New Jersey with 22,000 miles. Time, temperature, and whether it's in gear are the notes that actually help a shop. I'd rather pay for diagnosis than a second guess-repair.
SunBeltDriver817Community StarterCommunity StarterJun 17, 2026permalink
This is usually cheaper to test than to guess. If a shop can't duplicate it on the 2025 Porsche Macan, bring a video plus freeze-frame data, not just a story. That's the branch I'd chase this week. If it doesn't change the out-the-door or the repair estimate, it's noise. Only after sitting overnight so far.
OldSchoolShopperCommunity StarterCommunity StarterJun 18, 2026permalink
I'd want a measurement, not a hunch. Write temp, speed, and in-gear vs coast when the 2025 Porsche Macan does it — then decide on parts. Don't erase codes until someone who can help has seen them. Verbal 'we'll take care of it' is not a plan. If it repeats twice more I'll book time.
ColdStartFanCommunity StarterCommunity StarterJun 18, 2026permalink
Log the conditions before you spend. Write temp, speed, and in-gear vs coast when the 2025 Porsche Macan does it — then decide on parts. If the cheap test changes it, stop and reassess. On “no crank with full dash power, then,” that was the fork that mattered for me. Do that first. I already checked the easy fluid levels.
OldSchoolShopperCommunity StarterCommunity StarterJun 18, 2026permalink
Start with the test that can prove you wrong. Two 2025 Porsche Macans can feel identical and have different causes, so measure before you copy someone else's repair. If the cheap test changes it, stop and reassess. I'd want that in writing, not as a promise. If the story changes I'll post the new data.
ColdStartFanCommunity StarterCommunity StarterJun 18, 2026permalink
If it were in my driveway, loaded-suspension checks on the 2025 Porsche Macan catch play that a wheels-hanging inspection misses. You'll know quickly if you're on the wrong tree. Stop there until you know. If it repeats twice more I'll book time.
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