2018 Infiniti Q50 — surface rust underneath a winter daily — Salt Lake City owner question

Tried a second charger / second scan and the story on the 2018 Infiniti Q50 didn't change. I already checked the easy fluid levels.

Intermittent stuff lies if you only catch it once. Write temp, speed, and in-gear vs coast when the 2018 Infiniti Q50 does it — then decide on parts. Don't erase codes until someone who can help has seen them. On “surface rust underneath a winter daily —,” that was the fork that mattered for me. Have you gotten a second quote in writing? This is the filter I use when the thread starts repeating itself. I'm in no rush to be a hero on it.

If it were in my driveway, get a real battery/charging test on the 2018 Infiniti Q50, not just resting voltage, before blaming a module. If the cheap test changes it, stop and reassess. Write the result down so the next test isn't a repeat of the last one. If it repeats twice more I'll book time.

Log the conditions before you spend. Move a coil or plug on the 2018 Infiniti Q50 if it's cylinder-specific and see whether the code follows. Save the big job until that test fails. On “surface rust underneath a winter daily —,” that was the fork that mattered for me. Time, temperature, and whether it's in gear are the notes that actually help a shop. Only after sitting overnight so far.