2018 Kia Optima — clunk when changing from reverse to drive

If it were in my driveway, capture voltage while the 2018 Kia Optima is actually failing — after it restarts you've lost the clue. You'll know quickly if you're on the wrong tree. If it doesn't change the out-the-door or the repair estimate, it's noise. I'd sleep better after that step, even if it finds nothing. Wrote this up on my lunch break.

I wouldn't throw parts yet. Capture voltage while the 2018 Kia Optima is actually failing — after it restarts you've lost the clue. That's the branch I'd chase this week. That's the whole play. Heat soak after errands is the other window.

Log the conditions before you spend. Loaded-suspension checks on the 2018 Kia Optima catch play that a wheels-hanging inspection misses. Don't erase codes until someone who can help has seen them. On “clunk when changing from reverse to drive,” that was the fork that mattered for me. Verbal 'we'll take care of it' is not a plan. Parking it somewhere I can hear it better next time.