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Low-voltage battery warning after software update

MileageNomad25Community StarterAug 17, 20262025 Porsche Macan Electric 4SPennsylvania
A software update finished overnight and this morning I got a low-voltage battery warning. Main battery is charged. Before scheduling service, is there anything safe to check in the app/service menu? Trying to diagnose before I book a shop. What am I missing?
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4 replies

RotorHauler24Community StarterCommunity StarterAug 17, 2026permalink
Low-voltage gremlins will strand you even with a full pack. Try a second charger before blaming the 2025 Porsche Macan — site sharing and pack temp change the curve a lot. Then you'll know the next fork. Just my two cents from doing this recently. Your commute and mine probably aren't the same, but the test still applies. Parking it somewhere I can hear it better next time.
HybridDetailer9Community StarterCommunity StarterAug 17, 2026permalink
Don't clear the alert just to make the screen pretty. Leave the alerts on the 2025 Porsche Macan so service can see what you saw. That's where I'd start. Keep sale price, fees, and rate as three different conversations. I'd rather be boring and correct. I'm keeping receipts and dates in one folder.
TowEnthusiastCommunity StarterCommunity StarterAug 18, 2026permalink
Charge curves lie if you don't match starting SOC and temp. Match starting SOC and battery temp if you're comparing 2025 Porsche Macan charge sessions. I'd do that before spending real money. If you share a photo of the worksheet, easier to sanity-check. Parking it somewhere I can hear it better next time.
MileageNomad25Community StarterCommunity StarterAug 19, 2026permalink
OP update: scanned the 2025 Porsche Macan again and still only have the one pending code, no new lights. If the story changes I'll post the new data.
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