2023 Hyundai Ioniq 5 — eV has plenty of main battery but shows a 12V warning — anyone dealt with this recently?

I wouldn't throw parts yet. Capture voltage while the 2023 Hyundai Ioniq 5 is actually failing — after it restarts you've lost the clue. 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. Wrote this up on my lunch break.

Intermittent stuff lies if you only catch it once. Write temp, speed, and in-gear vs coast when the 2023 Hyundai Ioniq 5 does it — then decide on parts. That's the branch I'd chase this week. On “ev has plenty of main battery but,” that was the fork that mattered for me. If it doesn't change the out-the-door or the repair estimate, it's noise. No warning lights, which is why I'm documenting it.

I'd want a measurement, not a hunch. Get a real battery/charging test on the 2023 Hyundai Ioniq 5, not just resting voltage, before blaming a module. You'll know quickly if you're on the wrong tree. Time, temperature, and whether it's in gear are the notes that actually help a shop. I refuse to clear codes until someone else sees them.

I'd want a measurement, not a hunch. A pressure test beats staring at a dry driveway if the 2023 Hyundai Ioniq 5 is losing coolant with no puddle. Don't erase codes until someone who can help has seen them. Have you gotten a second quote in writing? I'd rather look cautious in this thread than stuck later.

I went back under the 2023 Hyundai Ioniq 5 and it only happens after a heat soak, not on a cold start. Not interested in a five-hour wait for a shrug.

This is usually cheaper to test than to guess. Move a coil or plug on the 2023 Hyundai Ioniq 5 if it's cylinder-specific and see whether the code follows. You'll know quickly if you're on the wrong tree. This is from a 2023 Hyundai Ioniq 5 in Pennsylvania with 23,000 miles. No need to make it theatrical. A day of patience here is cheaper than a wrong part. Wrote this up on my lunch break.

If it were in my driveway, loaded-suspension checks on the 2023 Hyundai Ioniq 5 catch play that a wheels-hanging inspection misses. That's the branch I'd chase this week. I'd want that in writing, not as a promise. I'd sleep better after that step, even if it finds nothing. I'm keeping receipts and dates in one folder.

It did ev has plenty of main battery but twice this week, both times after sitting. No change in mileage feel. I'll update if anything new shows up.

I wouldn't throw parts yet. A pressure test beats staring at a dry driveway if the 2023 Hyundai Ioniq 5 is losing coolant with no puddle. That's the branch I'd chase this week. This is from a 2023 Hyundai Ioniq 5 in Pennsylvania with 23,000 miles. No need to make it theatrical. Worth doing even if the car feels fine right now. I'll update if anything new shows up.