Need advice: Should I service 'lifetime' transmission fluid?

Intermittent stuff lies if you only catch it once. Capture voltage while the 2025 Lexus NX is actually failing — after it restarts you've lost the clue. If the cheap test changes it, stop and reassess. On “should i service 'lifetime' transmission fluid,” that was the fork that mattered for me. Post the numbers (or the code) and people can get more specific. This is the filter I use when the thread starts repeating itself. This is the version I'd tell a friend.

I wouldn't throw parts yet. Get a real battery/charging test on the 2025 Lexus NX, not just resting voltage, before blaming a module. If the cheap test changes it, stop and reassess. Parts cannon is a personality type I try to avoid. Your commute and mine probably aren't the same, but the test still applies. No warning lights, which is why I'm documenting it.

It did should i service 'lifetime' transmission fluid twice this week, both times after sitting. No change in mileage feel. If it repeats twice more I'll book time.