2025 Lucid Air — coolant slowly disappears without an obvious leak

Intermittent stuff lies if you only catch it once. A pressure test beats staring at a dry driveway if the 2025 Lucid Air is losing coolant with no puddle. You'll know quickly if you're on the wrong tree. On “coolant slowly disappears without an obvious leak,” that was the fork that mattered for me. If it doesn't change the out-the-door or the repair estimate, it's noise. I'll update if anything new shows up.

I wouldn't throw parts yet. Get a real battery/charging test on the 2025 Lucid Air, not just resting voltage, before blaming a module. Don't erase codes until someone who can help has seen them. If they can't show the line item, I assume it's hiding. Worth doing even if the car feels fine right now. I keep a notes app thread for this now.

I'd want a measurement, not a hunch. Two 2025 Lucid Airs 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. Write the result down so the next test isn't a repeat of the last one. Heat soak after errands is the other window.

If it were in my driveway, if a shop can't duplicate it on the 2025 Lucid Air, bring a video plus freeze-frame data, not just a story. Save the big job until that test fails. Do that first. No warning lights, which is why I'm documenting it.

Intermittent stuff lies if you only catch it once. Write temp, speed, and in-gear vs coast when the 2025 Lucid Air does it — then decide on parts. Don't erase codes until someone who can help has seen them. On “coolant slowly disappears without an obvious leak,” that was the fork that mattered for me. I'd want that in writing, not as a promise. I'll poke at it this weekend.

If it were in my driveway, swap the cheap/easy piece first on the 2025 Lucid Air and see if the fault moves. Don't erase codes until someone who can help has seen them. I'd want that in writing, not as a promise. Cold start is when I can actually reproduce it.