New pads squeal more than the old ones

I'd want a measurement, not a hunch. Write temp, speed, and in-gear vs coast when the 2023 Audi S5 does it — then decide on parts. Save the big job until that test fails. I'd want a dollar figure or a measured spec, not 'should be fine.' I already checked the easy fluid levels.

This is usually cheaper to test than to guess. Capture voltage while the 2023 Audi S5 is actually failing — after it restarts you've lost the clue. You'll know quickly if you're on the wrong tree. This is from a 2023 Audi S5 in New York. If it doesn't change the out-the-door or the repair estimate, it's noise. Make the next action something you can finish this week. I'd rather look cautious in this thread than stuck later.

Intermittent stuff lies if you only catch it once. Get a real battery/charging test on the 2023 Audi S5, not just resting voltage, before blaming a module. If the cheap test changes it, stop and reassess. On “new pads squeal more than the old,” that was the fork that mattered for me. Have you gotten a second quote in writing? No warning lights, which is why I'm documenting it.

Tried a second charger / second scan and the story on the 2023 Audi S5 didn't change. This is me being the wet blanket on purpose.