2020 Acura RDX — check-engine light turned itself off — still scan it? — buyer question from Brooklyn

If it were in my driveway, get a real battery/charging test on the 2020 Acura RDX, not just resting voltage, before blaming a module. You'll know quickly if you're on the wrong tree. Happy to compare notes if your setup is different. Not trying to scare you — just skip the expensive first guess. This is me being the wet blanket on purpose.

Ask what changed right before it started. Write temp, speed, and in-gear vs coast when the 2020 Acura RDX does it — then decide on parts. If the cheap test changes it, stop and reassess. If they can't show the line item, I assume it's hiding. Make the next action something you can finish this week. If this is nothing, great. I want that in data.

Intermittent stuff lies if you only catch it once. Swap the cheap/easy piece first on the 2020 Acura RDX and see if the fault moves. Save the big job until that test fails. On “check-engine light turned itself off — still,” that was the fork that mattered for me. A shop burned me once by skipping that step. If your situation is the opposite, ignore me. I refuse to clear codes until someone else sees them.

I wouldn't throw parts yet. Loaded-suspension checks on the 2020 Acura RDX catch play that a wheels-hanging inspection misses. You'll know quickly if you're on the wrong tree. Verbal 'we'll take care of it' is not a plan. Trying not to diagnose from the couch.

Start with the test that can prove you wrong. Write temp, speed, and in-gear vs coast when the 2020 Acura RDX does it — then decide on parts. If the cheap test changes it, stop and reassess. If you share a photo of the worksheet, easier to sanity-check. Next check is the cheap one I can do in a driveway.